Rotary joint
By introducing a non-contact sealing structure between the liquid guide shaft and the manifold slip ring in the rotary joint, the problem of seal wear and heat generation is solved, ensuring high-speed rotation of the liquid guide shaft and improving liquid transfer efficiency and application range.
Patent Information
- Application Number
- CN202520242899.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-17
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-02-17
AI Technical Summary
In existing rotary joints, wear and heat generation of the seals limit the rotation speed of the oil guide shaft, affecting the efficiency of fluid transfer.
A non-contact sealing structure is adopted between the liquid guide shaft and the manifold slip ring to ensure that there is a gap between the liquid guide shaft and the manifold slip ring, avoid friction, and achieve high-speed rotation.
It improves liquid transfer efficiency, expands the scope of applications, and enables the transport and recovery of liquids under high pressure.
Smart Images
Figure CN223690627U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of rotary joint especially relates to a rotary joint. BACKGROUND
[0002] Rotary joint is the connection sealing device that liquid medium is inputted from static pipeline to rotating or reciprocating equipment, and is discharged from rotary joint again. It is widely used in various rotating or reciprocating equipment that need liquid medium transmission. When conveying liquid, liquid is connected to rotary joint by pipeline from pump source, and through the lead-through mechanism in rotary joint, liquid supply and recovery are realized in rotating equipment.
[0003] At present, when sealing the oil guide shaft, mechanical seal is usually used, that is, the liquid is sealed by the sealing element, and this mode is easy to cause the sealing element to wear and heat, thereby limiting the rotation speed of the oil guide shaft and affecting the transmission efficiency of the liquid. UTILITY MODEL CONTENTS
[0004] The utility model aims at at least one of the technical problems in the related art to some extent.
[0005] Therefore, one purpose of the utility model is to provide a rotary joint, which forms a non-contact sealing structure between the liquid guide shaft and the collecting and distributing slip ring, solves the problem of sealing element wear and heat in the prior art, ensures that the liquid guide shaft can rotate at high speed, and further improves the liquid transmission efficiency and the application range.
[0006] To achieve the above purpose, the utility model provides a rotary joint in the first aspect, which comprises a collecting and distributing slip ring, a liquid guide shaft, a first gland and a second gland, wherein two bearings are arranged on the liquid guide shaft, the first gland and the second gland are connected with the corresponding bearings respectively, and the first gland and the second gland are arranged at the two ends of the collecting and distributing slip ring respectively; one end of the liquid guide shaft is arranged in the interior of the collecting and distributing slip ring through the first gland and the second gland, and the liquid guide shaft and the collecting and distributing slip ring are in a non-contact sealing structure; an annular groove is arranged in the interior of the collecting and distributing slip ring, an axial hole is arranged in the interior of the liquid guide shaft, and the axial hole and the annular groove are in communication with each other.
[0007] The rotary joint of the utility model forms a non-contact sealing structure between the liquid guide shaft and the collecting and distributing slip ring, solves the problem of sealing element wear and heat in the prior art, ensures that the liquid guide shaft can rotate at high speed, and further improves the liquid transmission efficiency and the application range.
[0008] In addition, the rotary joint proposed in the application can have the following additional technical features:
[0009] Specifically, the other end of the liquid guide shaft is provided with a flange, a plurality of holes are arranged in an annular array on the flange, and a sealing ring groove is arranged on the end face of the flange.
[0010] Specifically, the second gland is provided with an overflow hole.
[0011] Specifically, the outer circle of the collecting and distributing slip ring is provided with a threaded mounting hole corresponding to the annular groove.
[0012] The additional aspects and advantages of the present application will be partially given in the following description, and some will become apparent from the following description, or be understood through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS
[0013] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of embodiments, taken in conjunction with the accompanying drawings of which:
[0014] Figure 1 The structure diagram of the rotary joint of one embodiment of the present application is shown in the figure;
[0015] Figure 2 The cross-sectional view of the rotary joint of one embodiment of the present application is shown in the figure Figure 1 ;
[0016] Figure 3 The cross-sectional view of the rotary joint of one embodiment of the present application is shown in the figure Figure 2 .
[0017] As shown in the figure: 1, collecting and distributing slip ring; 2, flange; 3, liquid guide shaft; 4, threaded mounting hole; 5, first gland; 6, second gland; 7, shaft end gland; 10, annular groove; 30, shaft hole; 60, overflow hole. DETAILED DESCRIPTION
[0018] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present application, and cannot be understood as limiting the present application. On the contrary, the embodiments of the present application include all changes, modifications and equivalents falling within the spirit and scope of the appended claims.
[0019] The rotary joint of the embodiment of the present application will be described below in conjunction with the accompanying drawings.
[0020] As Figures 1 to 3 shown, the rotary joint of the embodiment of the present application can include a collecting and distributing slip ring 1, a liquid guide shaft 3, a first gland 5 and a second gland 6.
[0021] The liquid guide shaft 3 is provided with two bearings, the first gland 5 and the second gland 6 are connected with the corresponding bearings respectively, and the first gland 5 and the second gland 6 are arranged at two ends of the collecting and distributing slip ring 1 respectively.
[0022] It should be noted that the shaft end gland 7 is arranged at the end of the liquid guide shaft 3, and the shaft end gland 7 can cooperate the liquid guide shaft 3 with the bearing to prevent the liquid guide shaft 3 from moving.
[0023] Further, the first gland 5 and the second gland 6 play the role of pressing the bearing, positioning and installing the seal.
[0024] One end of the liquid guide shaft 3 is arranged in the inside of the collecting and distributing slip ring 1 through the first gland 5 and the second gland 6, and the liquid guide shaft 3 and the collecting and distributing slip ring 1 are in a non-contact sealing structure, the inside of the collecting and distributing slip ring 1 is provided with an annular groove 10, the inside of the liquid guide shaft 3 is provided with a shaft hole 30, and the shaft hole 30 and the annular groove 10 are in communication with each other.
[0025] It should be noted that the shaft hole 30 described in the embodiment transversely penetrates the annular groove 10, and there is a gap between the liquid guide shaft 3 and the collecting and distributing slip ring 1, liquid enters the inside of the annular groove 10 through the pipeline, and then is conducted into the equipment through the shaft hole 30 on the liquid guide shaft 3, and the liquid in the inside of the equipment can also be reversely guided out through the mechanism.
[0026] In one embodiment of the utility model, as shown in Figure 1 The other end of the liquid guide shaft 3 is provided with a flange 2, a plurality of hole paths are arranged in an annular array on the flange 2, and a sealing ring groove is arranged on the end face of the flange 2.
[0027] In the embodiment of the application, the flange 2 facilitates the installation of the liquid guide shaft 3, and the sealing ring groove can prevent leakage when the equipment is connected.
[0028] In one embodiment of the utility model, as shown in Figure 3 The second gland 6 is provided with an overflow hole 60, and the overflow hole 60 can discharge excess liquid.
[0029] In one embodiment of the utility model, as shown in Figure 2 The outer circle of the collecting and distributing slip ring 1 is provided with a threaded mounting hole 4 corresponding to the annular groove 10, and the threaded mounting hole 4 facilitates the installation.
[0030] Specifically, when the liquid is transported, the liquid is first conveyed into the annular groove 10 of the collecting and distributing slip ring through the pipeline, and then conducted into the equipment through the shaft hole 30 on the liquid guide shaft 3, so that the liquid is transported, and because the liquid guide shaft 3 is not in contact with the collecting and distributing slip ring 1 (there is a gap between the liquid guide shaft 3 and the collecting and distributing slip ring 1), when the liquid guide shaft 3 rotates, friction between the liquid guide shaft 3 and the collecting and distributing slip ring 1 will not be generated, so that the problem of wear and heat of the sealing element will not be caused, so that high-speed rotation of the liquid guide shaft 3 can be realized, and the liquid can be transported and recovered under the pressure of 16 MPa, and the conversion of the liquid from static to dynamic is solved, and the application scenarios are more.
[0031] In summary, the rotary joint of the embodiment of the utility model, through forming the non-contact sealing structure between the liquid guide shaft and the collecting and distributing slip ring, solves the problem of wear and heat of the sealing element in the prior art, ensures that the liquid guide shaft can realize high-speed rotation, and further improves the liquid transmission efficiency, and the application range is wider.
[0032] In the description of the present specification, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can be explicitly or implicitly included at least one of the features. In the description of the utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.
[0033] In the description of the present specification, the description of the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of different embodiments or examples without contradiction.
Claims
1. A rotary joint, characterized by Comprise a collecting and distributing slip ring, a liquid guide shaft, a first gland and a second gland, wherein, Two bearings are arranged on the liquid guide shaft, the first gland and the second gland are connected with the corresponding bearings respectively, and the first gland and the second gland are arranged at the two ends of the collecting and distributing slip ring respectively; One end of the liquid guide shaft is arranged in the interior of the collecting and distributing slip ring through the first gland and the second gland, and the liquid guide shaft and the collecting and distributing slip ring are in a non-contact sealing structure; The interior of the collecting and distributing slip ring is provided with an annular groove, the interior of the liquid guide shaft is provided with a shaft hole, and the shaft hole and the annular groove are in communication with each other.
2. The rotary joint of claim 1, wherein, The other end of the liquid guide shaft is provided with a flange, a plurality of hole channels are arranged in an annular array on the flange, and an end surface of the flange is provided with a sealing ring groove.
3. The rotary joint of claim 1, wherein, The second gland is provided with an overflow hole.
4. The rotary joint of claim 1, wherein, A threaded mounting hole corresponding to the annular groove is arranged on the outer circle of the collecting and distributing slip ring.