CN215763826U

CN215763826U - Rotary joint

Info

Publication number: CN215763826U
Application number: CN202121779747.3U
Authority: CN
Inventors: 樊瑜瑾; 李浙昆; 刘剑雄; 何伟
Original assignee: Kunming University of Science and Technology
Current assignee: Kunming University of Science and Technology
Priority date: 2021-08-02
Filing date: 2021-08-02
Publication date: 2022-02-08
Anticipated expiration: 2031-08-02

Abstract

The utility model discloses a rotary joint which comprises a connector I, a sealing element I, a connecting nut, a sealing element II and a connector II; the pipe diameter of the interface section of the connector I is gradually increased, the connector II is inserted into the interface section of the connector I, a sealing element I is arranged between the initial diameter-changing part of the connector I and the connector II, a sealing element II is arranged at the tail end of the interface section of the connector I, and the sealing element II is positioned between the inner wall of the connector I and the outer wall of the connector II; the tail end of the joint section of the connector I is provided with a connecting nut used for fastening the connector I and the connector II. The utility model not only can effectively realize sealing and prevent fluid leakage, but also can achieve the connection of the rotary pipe joint and has better sealing effect; the pipe joint has the advantages of simple and compact structure, small volume and convenient installation, and can be applied to various pipe joints which need to be rotated and sealed but have lower rotating speed.

Description

Rotary joint

Technical Field

The utility model relates to a rotary joint, and belongs to the technical field of hydraulic and pneumatic accessories.

Background

The rotary joint is a pipeline connector capable of sealing and rotating for conveying medium in 360 deg. rotation, and can be used for sealing and conveying several media of gas, liquid and oil, etc. and can be used in ball-shaped rotary equipment for gas-liquid heating drying and cooling and reciprocating equipment or swinging equipment with arbitrary angle, and in the gas-liquid power equipment for mechanical clamping and braking the rotary joint also can be matched, and the rotary joint can be made into one-way circulation type, two-way circulation type, inner tube fixed type and inner tube rotary type, etc. The existing rotary joint has the defects of complex structure, large occupied space and insufficient sealing performance.

In view of the above, it is necessary to design a rotary joint to solve the above technical problems.

Disclosure of Invention

The utility model aims to provide a rotary joint, which is sealed by effectively filling a gap of a joint surface through the sealing combination of the end surface of a seal I and the conical surface of a seal II, further prevents fluid leakage, and controls the compression amount of a sealing element through the limiting action of the joint end surface of a movable joint and a static joint of the rotary joint so that the rotary joint keeps rotating and is not blocked.

In order to achieve the purpose, the utility model adopts the technical scheme that:

a rotary joint comprises a connector I, a sealing element I, a connecting nut, a sealing element II and a connector II;

the pipe diameter of the interface section of the connector I is gradually increased, the connector II is inserted into the interface section of the connector I, a sealing element I is arranged between the initial diameter-changing part of the connector I and the connector II, a sealing element II is arranged at the tail end of the interface section of the connector I, and the sealing element II is positioned between the inner wall of the connector I and the outer wall of the connector II; the tail end of the joint section of the connector I is provided with a connecting nut used for fastening the connector I and the connector II.

Furthermore, the connector I comprises a connector I inner wall I, a connector I end face I, a connector I inner wall II, a connector I end face II and a connector I external thread; the sealing element I comprises a sealing element I end surface I, a sealing element I outer circular surface and a sealing element I end surface II;

sealing member I terminal surface II laminates with connector I terminal surface II, and the outer disc of sealing member I and inner wall II clearance fit.

Further, the sealing element II comprises a sealing element II end face, a sealing element II outer circular face and a sealing element II conical face; the connector II comprises a conical surface of the connector II, an end surface I of the connector II and an end surface II of the connector II;

further, sealing member I terminal surface I and the laminating of connector II terminal surface II, connector I terminal surface I and the laminating of connector II terminal surface I, sealing member II conical surface and the laminating of connector II conical surface, the outer disc of sealing member II and connector I inner wall I clearance fit.

Further, the connecting nut comprises a nut internal thread and a nut end face; the end face of the sealing element II is attached to the end face of the nut; the internal thread of the nut is matched with the external thread of the connector I.

The utility model has the beneficial effects that:

1. the utility model enables the end face of the connecting nut to press the sealing element II by screwing the connecting nut, and further presses the connector II and the sealing element I, wherein the sealing element I and the sealing element II are compressed and deformed under stress, and corresponding surface gaps are filled to achieve the effect of sealing and preventing fluid leakage.

2. The utility model has simple and compact structure, small volume and convenient installation, and can be applied to various pipe connections which need to be rotated and sealed but have lower rotating speed.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram of a connector I according to the present invention;

FIG. 3 is a schematic structural view of a seal I of the present invention;

FIG. 4 is a schematic structural view of the coupling nut of the present invention;

FIG. 5 is a schematic structural view of a sealing member II of the present invention;

FIG. 6 is a schematic structural diagram of a connector II according to the present invention;

the reference numbers in the figures are: 1-connector I, 2-sealing element I, 3-connecting nut, 4-sealing element II, 5-connector II, 11-connector I inner wall I, 12-connector I end face I, 13-connector I inner wall II, 14-connector I end face II, 15-connector I external thread, 21-sealing element I end face I, 22-sealing element I external circular surface, 23-sealing element I end face II, 31-nut internal thread, 32-nut end face, 33-nut internal hole, 41-sealing element II end face, 42-sealing element II external circular surface, 43-sealing element II conical surface, 51-connector II cylindrical surface I, 52-connector II conical surface, 53-connector II cylindrical surface II, 54-connector II end face I, 55-connector II cylindrical surface III, 56-connecting head II end face II.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Referring to fig. 1, a rotary joint includes a connector I1, a sealing element I2, a coupling nut 3, a sealing element II, and a connector II 5; the pipe diameter of the connector section of the connector I1 is gradually increased, the connector II5 is inserted into the connector section of the connector I1, a sealing element I2 is arranged between the initial diameter-changing part of the connector I1 and the connector II5, a sealing element II is arranged at the tail section of the connector I1, and the sealing element II is positioned between the inner wall of the connector I1 and the outer wall of the connector II 5; the tail end of the connector I1 interface section is provided with a connecting nut 3 for fastening the connector I1 and the connector II 5.

According to an embodiment of the present invention, referring to fig. 2 and fig. 3, the connector I1 includes a connector I inner wall I11, a connector I end surface I12, a connector I inner wall II13, a connector I end surface II14, and a connector I outer thread 15; the sealing element I2 comprises a sealing element I end face I21, a sealing element I outer circular face 22 and a sealing element I end face II 23;

sealing member I terminal surface II23 and connector I terminal surface II14 laminating, sealing member I excircle face 22 and inner wall II13 clearance fit.

According to an embodiment of the present invention, referring to fig. 5 and 6, the sealing element II4 includes a sealing element II end surface 41, a sealing element II outer circular surface 42, and a sealing element II conical surface 43; the connector II5 comprises a connector II cylindrical surface I51, a connector II conical surface 52, a connector II end surface I54 and a connector II end surface II 56;

the end face I21 of the sealing element I is attached to the end face II56 of the connector II, the end face I12 of the connector I is attached to the end face I54 of the connector II, the conical surface 43 of the sealing element II is attached to the conical surface 52 of the connector II, and the outer circular surface 42 of the sealing element II is in clearance fit with the inner wall I11 of the connector I; the seal II4 is arranged between the inner wall I11 of the connector I and the cylindrical surface I51 of the connector II.

According to an embodiment of the present invention, referring to fig. 4, the coupling nut 3 includes a nut internal thread 31 and a nut end face 32; the end surface 41 of the sealing element II is attached to the end surface 32 of the nut; the nut internal thread 31 cooperates with the connector I external thread 15.

The working principle of the utility model is as follows: the connecting nut 3 is screwed down to enable the nut end face 32 of the connecting nut 3 to press against the end face 41 of the sealing element II4, then the conical face 43 of the sealing element II4 presses against the conical face 52 of the connecting head II5, further, the end face II56 of the connecting head II5 presses against the end face I21 of the sealing element I2, wherein the sealing element I2 and the sealing element II4 are compressed and deformed under stress, corresponding surface gaps are filled to achieve the effect of sealing and preventing fluid leakage, in the process of screwing down the connecting nut 3 to compress the sealing element I2 and the sealing element II4, when the end face I12 of the connecting head I1 is attached to the end face I54 of the connecting head II5, the compression amount of the sealing element can be controlled, so that the connecting head I1 and the connecting head II5 can keep relative rotation and are not clamped, and rotatable pipe connection is achieved and good sealing effect is achieved. The utility model has simple and compact structure, small volume and convenient installation, and can be applied to various pipe connections which need to be rotated and sealed but have lower rotating speed.

In the description of the present specification, reference to the description of the terms "one embodiment", "some embodiments", "an illustrative embodiment", "an example", "a specific example", or "some examples", etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A swivel joint, characterized by: comprises a connector I (1), a sealing element I (2), a connecting nut (3), a sealing element II (4) and a connector II (5);

the pipe diameter of the interface section of the connector I (1) is gradually increased, the connector II (5) is inserted into the interface section of the connector I (1), a sealing element I (2) is arranged between the initial diameter-changing part of the connector I (1) and the connector II (5), a sealing element II (4) is arranged at the tail section of the interface section of the connector I (1), and the sealing element II (4) is positioned between the inner wall of the connector I (1) and the outer wall of the connector II (5); the tail end of the joint section of the connector I (1) is provided with a connecting nut (3) used for fastening the connector I (1) and the connector II (5).

2. A swivel joint according to claim 1, wherein: the connector I (1) comprises a connector I inner wall I (11), a connector I end face I (12), a connector I inner wall II (13), a connector I end face II (14) and a connector I external thread (15); the sealing element I (2) comprises a sealing element I end face I (21), a sealing element I outer circular face (22) and a sealing element I end face II (23);

sealing member I terminal surface II (23) and connector I terminal surface II (14) laminating, sealing member I excircle face (22) and inner wall II (13) clearance fit.

3. A swivel joint according to claim 2, wherein: the sealing element II (4) comprises a sealing element II end surface (41), a sealing element II outer circular surface (42) and a sealing element II conical surface (43); the connector II (5) comprises a connector II conical surface (52), a connector II end surface I (54) and a connector II end surface II (56);

sealing member I terminal surface I (21) and joint II terminal surface II (56) laminating, joint I terminal surface I (12) and joint II terminal surface I (54) laminating, sealing member II conical surface (43) and joint II conical surface (52) laminating, outer disc (42) of sealing member II and joint I inner wall I (11) clearance fit.

4. A swivel joint according to claim 3, wherein: the connecting nut (3) comprises a nut internal thread (31) and a nut end face (32);

the end face (41) of the sealing element II is attached to the end face (32) of the nut; the nut internal thread (31) is matched with the connector I external thread (15).