Falling-off self-sealing rotary joint

Abstract

The utility model provides a fall-off self-sealing rotary joint which comprises a left shell and a right shell, the right shell is installed in the left shell in an inserted mode and rotates in the left shell, a left one-way valve mechanism is arranged in the left shell, a right one-way valve mechanism is arranged in the right shell, and the right one-way valve mechanism is arranged in the right shell. The left shell comprises a first shell body and a second shell body, the right shell body abuts against the end face of the first shell body, the left end face of the right shell body and the right end face of the first shell body are combined to form a clamping groove, an ejector rod is arranged in the clamping groove in an inserted mode, and the ejector rod ejects the left one-way valve mechanism and the right one-way valve mechanism open. Through the arrangement of the integral structure which is easy to damage, the integral structure can be preferentially snapped under the extreme working condition, abnormal damage to other elements such as pipelines is avoided, self-sealing can be achieved at the fracture ends after the integral structure is snapped, leakage of working media is avoided, and therefore system safety under the extreme working condition is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic systems, and in particular to a self-sealing rotary joint that can detach. Background Technology

[0002] Rotary joints are widely used in hydraulic systems, primarily for connecting rotating and stationary parts in pipelines. They ensure fluid flow between the rotating and stationary ends without interference. In extreme cases, pipelines may experience severe vibrations and pulling under specific operating conditions, potentially leading to pipeline breakage. Utility Model Content

[0003] The technical problem to be solved by this utility model is that in extreme situations, abnormal vibration and tension of pipelines can easily cause damage and leakage. This utility model provides a self-sealing rotary joint that can be detached to solve the above problems.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a self-sealing rotary joint that can be detached, including a left housing and a right housing. The right housing is inserted into and installed in the left housing and rotates within the left housing. A left one-way valve mechanism is provided in the left housing, and a right one-way valve mechanism is provided in the right housing. The left housing includes a first housing and a second housing. The end faces of the right housing and the first housing abut against each other. The left end face of the right housing and the right end face of the first housing are combined to form a slot. A push rod is inserted into the slot, and the push rod pushes open the left one-way valve mechanism and the right one-way valve mechanism respectively.

[0005] Furthermore: the first housing and the second housing are fixedly connected by connecting ribs, the second housing is sleeved on the right housing, and a retaining ring is provided between the second housing and the right housing.

[0006] Further: The left one-way valve mechanism includes a left valve core and a left spring. A left valve port is provided on the first housing. The left valve core is slidably installed in the first housing. The left spring pushes the left valve core toward the left valve port. The right one-way valve mechanism includes a right valve core and a right spring. A right valve port is provided on the right housing. The right valve core is slidably installed in the right housing. The right spring pushes the right valve core toward the right valve port. The push rod pushes the left valve core to the left away from the left valve port and pushes the right valve core to the right away from the right valve port, respectively.

[0007] Furthermore: on the right end face of the first housing, a sealing groove is provided outside the slot, and a rotating sealing ring is provided in the sealing groove, and the left end face of the right housing is sealed and fitted to the rotating sealing ring.

[0008] Furthermore: a left connector is installed on the first housing, and a right connector is installed on the right housing.

[0009] The beneficial effects of this utility model are that the self-sealing rotary joint of this utility model, by setting an easily damaged overall structure, can be pulled apart first under extreme working conditions, avoiding abnormal damage to pipelines and other components. After being pulled apart, it can achieve self-sealing at the broken ends, avoiding leakage of the working medium, thus ensuring system safety under extreme working conditions. Attached Figure Description

[0010] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0011] Figure 1 This is a schematic diagram of the external shape of a self-sealing rotary joint that can be detached according to this utility model;

[0012] Figure 2 and Figure 3 This is a half-section schematic diagram of a self-sealing rotary joint that can be detached from its original position at different sectional angles;

[0013] Figure 4 yes Figure 2 The internal sectional view after omitting the right spring is omitted.

[0014] In the diagram: 1. Left housing; 2. Right housing; 3. First housing; 4. Second housing; 5. Slot; 6. Top rod; 7. Connecting rib; 8. Retaining ring; 9. Left valve core; 10. Left spring; 11. Left valve port; 12. Right valve core; 13. Right spring; 14. Right valve port; 15. Sealing groove; 16. Rotating sealing ring; 17. Left connector; 18. Right connector. Detailed Implementation

[0015] The embodiments of this utility model are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model. Rather, the embodiments of this utility model include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0016] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0017] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0018] Any process or method described in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of the preferred embodiments of the present invention includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order according to the functions involved, as should be understood by those skilled in the art to which embodiments of the present invention pertain.

[0019] like Figures 1 to 4 As shown, this utility model provides a self-sealing rotary joint that can be detached, including a left housing 1 and a right housing 2. The right housing 2 is inserted into and installed in the left housing 1 and rotates within the left housing 1. A left one-way valve mechanism is provided in the left housing 1, and a right one-way valve mechanism is provided in the right housing 2. The left housing 1 includes a first housing 3 and a second housing 4. The end faces of the right housing 2 and the first housing 3 abut against each other. The left end face of the right housing 2 and the right end face of the first housing 3 are combined to form a groove 5. A push rod 6 is inserted into the groove 5, and the push rod 6 pushes open the left one-way valve mechanism and the right one-way valve mechanism respectively.

[0020] The self-sealing rotary joint of this application is connected to the hydraulic system or fluid transmission system of the equipment during normal use, serving to transmit fluid medium between the fixed end and the rotating end. In normal use, the right housing 2 is inserted into the left housing 1, and the right housing 2 and the left housing 1 can rotate relative to each other, thus realizing the transmission between the fixed end and the rotating end. In this normal state, since the end faces of the right housing 2 and the first housing 3 are abutting each other, that is, when the right housing 2 is normally inserted, the left end face of the right housing 2 and the right end face of the first housing 3 combine to form a groove 5 in which a push rod 6 is installed. At this time, one end of the push rod 6 pushes open the left one-way valve mechanism, and the other end pushes open the right one-way valve mechanism, allowing fluid to freely pass through the left one-way valve mechanism and the right one-way valve mechanism, realizing normal medium transportation.

[0021] However, under extreme conditions such as external vibration, impact, or pipe entanglement, the rotary joint is the first to be damaged. This can protect other hydraulic components in the system pipeline, especially preventing media leakage caused by pipeline damage. The most vulnerable situation is when the right housing 2 detaches from the left housing 1. The groove 5 formed by the combination of the left end face of the right housing 2 and the right end face of the first housing 3 no longer exists. The push rod 6, which was originally in the groove 5, also slips and falls off, and can no longer push the left and right check valve mechanisms. Since there is no push action from the push rod 6, the left and right check valve mechanisms change from the open state to the closed state. In this way, the fluid in the left housing 1 is sealed by the left check valve mechanism, and the fluid in the right housing 2 is sealed by the right check valve mechanism, achieving a self-sealing effect after detachment.

[0022] The first housing 3 and the second housing 4 are fixedly connected by a connecting rib 7. The second housing 4 is fitted onto the right housing 2, and a retaining ring 8 is provided between the second housing 4 and the right housing 2. The connecting rib 7 connects the first housing 3 and the second housing 4. The connecting rib 7 itself has low strength, and when subjected to external impact, the first housing 3 and the second housing 4 are prone to break at the connecting rib 7. This is one way that the left housing 1 and the right housing 2 can detach from each other. The impact resistance of the first housing 3 and the second housing 4 can be adjusted by setting different numbers of connecting ribs 7 or connecting ribs 7 with different thicknesses and lengths.

[0023] The retaining ring 8 is used to limit the axial displacement of the right housing 2 and the second housing 4, mainly to prevent the right housing 2 from falling out of the second housing 4. When an external impact occurs, a sufficiently large external force or impact can cause the right housing 2 to break through the restriction of the retaining ring 8, thus causing the right housing 2 to slip out of the second housing 4. By setting different specifications of the retaining ring 8, the impact resistance of the first housing 3 and the second housing 4 can be adjusted.

[0024] The left one-way valve mechanism includes a left valve core 9 and a left spring 10. A left valve port 11 is provided on the first housing 3. The left valve core 9 is slidably installed in the first housing 3. The left spring 10 pushes the left valve core 9 toward the left valve port 11. The right one-way valve mechanism includes a right valve core 12 and a right spring 13. A right valve port 14 is provided on the right housing 2. The right valve core 12 is slidably installed in the right housing 2. The right spring 13 pushes the right valve core 12 toward the right valve port 14. The push rod 6 pushes the left valve core 9 to the left away from the left valve port 11 and pushes the right valve core 12 to the right away from the right valve port 14, respectively.

[0025] The left and right check valve mechanisms have the same structure and working principle; therefore, only the left check valve mechanism will be explained, while the right check valve mechanism is explained similarly. When the push rod 6 is not present, the left valve core 9, pushed to the right by the left spring 10, will press firmly against the left valve port 11 and make sealing contact with it, thus closing the left valve port 11 and achieving a self-sealing effect. When the push rod 6 is present, it pushes the left valve core 9 to the left, causing it to move away from the left valve port 11, opening the passage and allowing the medium to flow normally.

[0026] On the right end face of the first housing 3, a sealing groove 15 is provided outside the slot 5, and a rotating sealing ring 16 is provided in the sealing groove 15. The left end face of the right housing 2 is sealed and fitted to the rotating sealing ring 16.

[0027] Rotating the sealing ring 16 will seal the end faces of the first housing 3 and the right housing 2 that are close to each other. In this way, even if the right housing 2 rotates inside the first housing 3, it can still maintain a sealed state and achieve the effect of rotational sealing. This is also the basic function of the rotary joint, which enables the transmission of media between the rotating end and the fixed end.

[0028] A left connector 17 is installed on the first housing 3, and a right connector 18 is installed on the right housing 2. The left connector 17 and the right connector 18 can be easily connected to external pipelines, thus realizing the connection of the rotary joint into the system.

[0029] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0030] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A self-sealing rotary joint that detaches, characterized in that: The device includes a left housing (1) and a right housing (2). The right housing (2) is inserted into the left housing (1) and rotates within the left housing (1). A left one-way valve mechanism is provided in the left housing (1), and a right one-way valve mechanism is provided in the right housing (2). The left housing (1) includes a first housing (3) and a second housing (4). The end faces of the right housing (2) and the first housing (3) abut against each other. The left end face of the right housing (2) and the right end face of the first housing (3) are combined to form a slot (5). A push rod (6) is inserted into the slot (5). The push rod (6) pushes open the left one-way valve mechanism and the right one-way valve mechanism respectively.

2. The self-sealing rotary joint as described in claim 1, characterized in that: The first housing (3) and the second housing (4) are fixedly connected by a connecting rib (7). The second housing (4) is sleeved on the right housing (2). A retaining ring (8) is provided between the second housing (4) and the right housing (2).

3. The self-sealing rotary joint as described in claim 2, characterized in that: The left one-way valve mechanism includes a left valve core (9) and a left spring (10). A left valve port (11) is provided on the first housing (3). The left valve core (9) is slidably installed in the first housing (3). The left spring (10) pushes the left valve core (9) towards the left valve port (11). The right one-way valve mechanism includes a right valve core (12) and a right spring (13). A right valve port (14) is provided on the right housing (2). The right valve core (12) is slidably installed in the right housing (2). The right spring (13) pushes the right valve core (12) towards the right valve port (14). The push rod (6) pushes the left valve core (9) to the left away from the left valve port (11) and pushes the right valve core (12) to the right away from the right valve port (14), respectively.

4. The self-sealing rotary joint as described in claim 3, characterized in that: On the right end face of the first housing (3), a sealing groove (15) is provided outside the slot (5), and a rotating sealing ring (16) is provided in the sealing groove (15). The left end face of the right housing (2) is sealed and fitted to the rotating sealing ring (16).

5. A self-sealing rotary joint as described in claim 4, characterized in that: A left connector (17) is installed on the first housing (3), and a right connector (18) is installed on the right housing (2).

Images