Quick sealing device for pipeline connection

Abstract

The utility model provides a quick sealing device for pipeline connection, which is used for detachably connecting a first pipe fitting and a second pipe fitting, and comprises a first bayonet seat, a second bayonet seat, a third bayonet seat, a third bayonet seat, a fourth bayonet seat, a fourth bayonet seat and a fifth bayonet seat, and the first bayonet seat is fixed at the end part of the first pipe fitting and is provided with a first circular opening and a plurality of radially extending first bayonet flanges; the second bayonet seat is concentrically arranged on the outer side of the first bayonet seat, so that the first bayonet seat and the second bayonet seat can rotate relatively, and the second bayonet seat is provided with a second circular opening and a plurality of second bayonet flanges extending in the radial direction; the pipe fitting bayonet part is arranged at the end part of the second pipe fitting and is provided with a first bayonet groove and a second bayonet groove which are respectively matched with the first bayonet seat and the second bayonet seat, and the first bayonet groove is matched with the first bayonet flange so as to rotate and lock along the first rotating direction; the second bayonet groove is matched with the second bayonet flange so as to be rotationally locked in the second rotation direction opposite to the first rotation direction. According to the utility model, the stability and reliability of pipe fitting connection in a vibration environment can be greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of pipeline technology, and specifically to a quick sealing device for pipeline connections. Background Technology

[0002] In the field of pipe connections, quick-sealing devices are widely used in industrial, building, and household piping systems to achieve detachable connections between pipe fittings. Traditional pipe connection methods mainly include spiral joints and non-spiral bayonet connections. Spiral joints achieve connection through threaded tightening, offering the advantage of simple structure, but their connection stability is poor under high-frequency vibration or dynamic load environments, easily leading to thread loosening due to vibration, which can cause leakage or connection failure. Non-spiral bayonet connections achieve quick locking through the engagement of the bayonet flange and bayonet groove, offering the advantage of convenient installation compared to spiral joints. However, conventional non-spiral bayonet connections also have problems under vibration environments. Due to the simple bayonet structure and lack of effective anti-loosening mechanisms, relative movement between the bayonet groove and flange can lead to loosening, affecting sealing performance and connection reliability. These problems limit the application of existing connection devices in scenarios with frequent vibration or high reliability requirements. Utility Model Content

[0003] One objective of this invention is to ensure high stability of pipe connections under vibration environments through a concentric double-bayonet structure and a locking mechanism with opposite rotation directions. The device employs a sealed bearing connecting the bayonet seat, effectively preventing loosening and improving sealing performance. Therefore, this invention provides a quick-sealing device for pipe connections.

[0004] Specifically, this utility model provides a quick sealing device for pipe connections, used to detachably connect a first pipe fitting and a second pipe fitting, comprising:

[0005] The first bayonet seat is fixed to the end of the first pipe fitting and has a first circular opening and multiple radially extending first bayonet flanges;

[0006] The second bayonet seat is concentrically disposed outside the first bayonet seat, so that the first bayonet seat and the second bayonet seat can rotate relative to each other. The second bayonet seat has a second circular opening and multiple radially extending second bayonet flanges.

[0007] The pipe fitting bayonet portion is provided at the end of the second pipe fitting and has a first bayonet groove and a second bayonet groove that respectively match the first bayonet seat and the second bayonet seat. The first bayonet groove cooperates with the first bayonet flange to rotate and lock in a first rotation direction, and the second bayonet groove cooperates with the second bayonet flange to rotate and lock in a second rotation direction opposite to the first rotation direction.

[0008] Furthermore, there are three of each of the first and second bayonet flanges, and they are evenly distributed along the circumference of their respective bayonet seats.

[0009] Furthermore, the second bayonet seat is connected to the first bayonet seat via a sealed bearing.

[0010] Furthermore, the sealed bearing is a ball bearing, with the outer ring of the ball bearing fixedly connected to the second bayonet seat and the inner ring fixedly connected to the first bayonet seat.

[0011] Furthermore, a sealing ring is provided between the first bayonet seat and the pipe fitting bayonet portion, and / or a sealing ring is provided between the second bayonet seat and the pipe fitting bayonet portion.

[0012] Furthermore, it also includes:

[0013] A first locking pin is provided on the first bayonet seat and a second locking pin is provided on the second bayonet seat. When the first bayonet groove rotates to a predetermined position, the first locking pin is inserted into the first locking groove provided on the pipe fitting bayonet portion. When the second bayonet groove rotates to a predetermined position, the second locking pin is inserted into the second locking groove provided on the pipe fitting bayonet portion, so as to prevent the second pipe fitting from rotating relative to the first pipe fitting.

[0014] Furthermore, both the first locking pin and the second locking pin are connected to springs. The springs are disposed in the first bayonet seat and the second bayonet seat, and are used to support the first locking pin and the second locking pin in a static state. The first locking pin and the second locking pin are also connected to a release button, which can move along the axial direction of the spring to drive the first locking pin and the second locking pin to move along the axial direction of the spring.

[0015] Furthermore, the inner diameter of the first bayonet seat is smaller than the inner diameter of the second bayonet seat.

[0016] Furthermore, it also includes:

[0017] The first spring is provided on the first bayonet seat, and the first spring is provided on the side of the first bayonet flange along the axial direction of the first bayonet seat. The clockwise starting end of the first spring has a bevel structure so that it can slide into the corresponding locking groove when the pipe fitting is inserted into the bayonet.

[0018] The second spring is provided on the second bayonet seat. The second spring is located on the side of the second bayonet flange along the axial direction of the second bayonet seat. The counterclockwise starting end of the second spring has a beveled structure so that it can slide into the corresponding locking groove when the pipe fitting is inserted into the bayonet.

[0019] Furthermore, the outer surface of the second bayonet seat and the outer surface of the pipe fitting bayonet portion are provided with anti-slip texture.

[0020] In this invention, the first and second bayonet seats are arranged concentrically, and the first and second bayonet grooves rotate in opposite directions, which effectively counteract the relative movement caused by vibration, greatly improving the stability and reliability of the pipe connection in a vibration environment, and overcoming the defects of traditional spiral interfaces and non-spiral bayonet joints that are prone to loosening.

[0021] In this invention, a sealed bearing is used to connect the first bayonet seat and the second bayonet seat to ensure smooth relative rotation and sealing. Combined with the design of the locking mechanism, the sealing performance and durability of the connection device are further enhanced, making it suitable for pipeline connection scenarios with high reliability requirements.

[0022] The above and other objects, advantages and features of this utility model will become more apparent to those skilled in the art from the following detailed description of specific embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0023] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0024] Figure 1 This is a first-angle explosion diagram according to an embodiment of the present invention;

[0025] Figure 2 This is a second-angle explosion diagram according to an embodiment of the present invention;

[0026] Figure 3 This is a three-dimensional schematic diagram of the structure of the first bayonet seat and the second bayonet seat according to an embodiment of the present utility model;

[0027] Figure 4 This is a three-dimensional schematic diagram of the pipe fitting bayonet structure according to an embodiment of the present utility model;

[0028] Figure 5 This is a schematic diagram of the pipe fitting bayonet structure according to an embodiment of the present invention;

[0029] Figure 6 It is along Figure 5 The sectional view AA is obtained by cutting along the cutting line AA in the middle;

[0030] Figure 7 It is along Figure 5 The sectional view BB is obtained by cutting along the section line BB.

[0031] In the picture:

[0032] 1-Bayonet seat; 11-First bayonet seat; 111-First bayonet flange; 112-First locking groove; 12-Second bayonet seat; 121-Second bayonet flange; 122-Second locking groove; 124-First spring; 13-Sealed bearing; 2-Pipe fitting bayonet part; 21-First bayonet groove; 211-First bayonet groove flange; 213-First button; 212-First locking pin; 22-Second bayonet groove; 221-Second bayonet groove flange; 222-Second locking pin; 223-Second button; 224-Second spring. Detailed Implementation

[0033] In the description of this embodiment, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, the use of terms such as "first," "second," etc., can explicitly or implicitly include at least one of those features, that is, include one or more of those features.

[0034] In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it covers, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0035] In embodiments of this utility model, the annular component is a circular ring structure. Its inner direction is defined as the direction towards the central axis of the annular component, and its outer direction is defined as the direction opposite to the central axis of the annular component. The axial direction refers to the direction along the central axis of the annular component. The clockwise rotation direction refers to the direction of movement rotating clockwise when viewed from one end of the annular component, and the counterclockwise rotation direction refers to the direction of movement rotating counterclockwise from the same observation point.

[0036] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," and "setting," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] Please refer to Figure 1 and Figure 2This embodiment provides a quick sealing device for pipe connection, used to detachably connect a first pipe fitting and a second pipe fitting. It includes a first bayonet seat 11, a second bayonet seat 12, and a pipe fitting bayonet portion 2. The first bayonet seat 11 is fixed to the end of the first pipe fitting and has a first circular opening and multiple radially extending first bayonet flanges 111. The second bayonet seat 12 is concentrically disposed outside the first bayonet seat 11, allowing the first bayonet seat 11 and the second bayonet seat 12 to rotate relative to each other. The second bayonet seat 12 has a second circular opening and multiple radially extending second bayonet flanges 121. The pipe fitting bayonet portion 2 is disposed at the end of the second pipe fitting and has a first bayonet groove 21 and a second bayonet groove 22 that respectively match the first bayonet seat 11 and the second bayonet seat 12. The first bayonet groove 21 engages with the first bayonet flange 111 to rotate and lock in a first rotational direction, and the second bayonet groove 22 engages with the second bayonet flange 121 to rotate and lock in a second rotational direction opposite to the first rotational direction. It is understood that if the first rotation direction is clockwise, then the second rotation direction is counterclockwise. In this embodiment, the concentrically arranged first bayonet seat 11 and second bayonet seat 12, in conjunction with the first bayonet groove 21 and second bayonet groove 22 with opposite rotation directions, effectively counteract the relative movement caused by vibration, greatly improving the stability and reliability of the pipe connection in a vibration environment, and overcoming the defects of traditional spiral interfaces and non-spiral bayonet joints being prone to loosening.

[0038] Please refer to Figure 3 According to one embodiment of the present invention, a first bayonet seat 11 is fixed to the end of a first pipe fitting and is a circular metal part. The first bayonet seat 11 has a first circular opening, the inner diameter of which is consistent with the inner diameter of the first pipe fitting to ensure unobstructed fluid flow. Three first bayonet flanges 111 are evenly distributed along the circumference of the inner diameter surface of the first bayonet seat 11. Each first bayonet flange 111 has an arc-shaped sheet structure and extends radially outward. The arc length of each first bayonet flange 111 is about 1 / 6 of the circumference, and the surface is provided with a wear-resistant coating (such as a polytetrafluoroethylene coating) to reduce rotational friction. The clockwise side of the first bayonet flange 111 has a beveled structure to facilitate sliding engagement with the flange of the first bayonet groove 21. The inner side of the first bayonet seat 11 is fixed to the first pipe fitting by threads or welding.

[0039] Please refer to Figure 3According to one embodiment of this utility model, the second bayonet seat 12 is concentrically disposed outside the first bayonet seat 11, and is a ring-shaped metal part with a larger outer diameter, made of the same material as the first bayonet seat 11. The second bayonet seat 12 has a second circular opening, the inner diameter of which is slightly larger than the outer diameter of the first bayonet seat 11 to accommodate the first bayonet seat 11. Three second bayonet flanges 121 are evenly distributed along the circumference of the inner diameter surface of the second bayonet seat 12, all of which are arc-shaped and extend radially outward. The arc length of the second bayonet flange 121 accounts for about 1 / 5 of the circumference, and the surface is provided with a wear-resistant coating. The counterclockwise side of the second bayonet flange 121 is provided with a bevel structure, the bevel angle being about 30 degrees, to match the flange of the second bayonet groove 22. The outer surface of the second bayonet seat 12 is provided with an anti-slip texture, such as a cross-shaped mesh pattern, to facilitate manual rotation.

[0040] Please refer to Figure 4 According to one embodiment of this utility model, the pipe fitting bayonet portion 2 is disposed at the end of the second pipe fitting, and has an annular structure with the same material as the bayonet seat. The inner diameter of the pipe fitting bayonet portion 2 is the same as the inner diameter of the second pipe fitting to facilitate connection. The pipe fitting bayonet portion 2 is provided with a first bayonet groove 21 and a second bayonet groove 22, located on its inner and outer sides respectively. The first bayonet groove 21 is an inner annular groove, with three first bayonet groove flanges 211 evenly distributed along the circumference. The flanges are arc-shaped and extend radially inward, matching the flanges of the first bayonet seat 11. A first locking groove 112 is provided in the area between the two first bayonet groove flanges 211. The second bayonet groove 22 is an outer annular groove, with three second bayonet groove flanges 221 evenly distributed along the circumference. The flanges extend radially inward, matching the flanges of the second bayonet seat 12. A 122 is provided in the area between the two second bayonet groove flanges 221. The outer surface of the fitting bayonet part 2 is provided with anti-slip texture.

[0041] According to one embodiment of this utility model, the first bayonet seat 11 and the second bayonet seat 12 are rotatably mounted via a sealed bearing 13. The sealed bearing 13 is a ball bearing, including an inner ring, an outer ring, balls, and a sealing ring. The inner ring is fixed to the outer diameter surface of the first bayonet seat 11, and the outer ring is fixed to the inner diameter surface of the second bayonet seat 12. The balls fill the raceway between the inner and outer rings. The sealing ring is made of rubber and is located on both sides of the bearing axially to prevent dust or liquid from entering, ensuring smooth rotation and sealing performance. The first bayonet seat 11 is fixed to the first pipe fitting, and the second bayonet seat 12 can rotate clockwise or counterclockwise around the first bayonet seat 11 via the bearing. The inner ring is fixed to the first bayonet seat 11 by bolts, and the outer ring is fixed to the second bayonet seat 12 by an interference fit to ensure rotational stability.

[0042] Please refer to Figure 3 and Figure 4According to one embodiment of the present invention, the locking mechanism includes a first locking pin 212 and a second locking pin 222, respectively disposed in a first bayonet seat 11 and a second bayonet seat 12. The first locking pin 212 is a cylindrical metal pin. The first locking pin 212 is installed between the two flanges of the first bayonet seat 11. The second locking pin 222 has the same structure and is installed between the two flanges of the second bayonet seat 12. In order to install the positioning pin, both the first bayonet seat 11 and the second bayonet seat 12 are provided with mounting holes. Each locking pin is connected to the corresponding mounting hole by a spring. The spring is fixed to the bottom of the through hole. In the static state, the locking pin is pushed inward so that its end protrudes from the inner diameter surface of the bayonet seat.

[0043] According to one embodiment of this utility model, the locking pin is equipped with a button for manually releasing the locked state. The button is a cylindrical plastic part, installed in a button groove on the outer diameter surface of the bayonet seat. The button groove is a radial groove that communicates with the through hole of the locking pin. A first button 213 is disposed on the first bayonet seat 11 and connected to the bottom of the first locking pin 212 via a metal connecting rod. A second button 223 is disposed on the second bayonet seat 12 and connected to the second locking pin 222 via a similar connecting rod. When the button is pressed, the connecting rod pushes the locking pin to move outward along the spring axis, disengaging it from the locking groove and releasing the lock. The outer end of the button has an anti-slip texture, and the inner end cooperates with the spring to ensure reset. A rubber sealing gasket is provided in the button groove to prevent liquid from entering.

[0044] According to one embodiment of this utility model, the quick-sealing device further includes a first spring 124 and a second spring 224, respectively disposed in the first bayonet groove 21 and the second bayonet groove 22. The first spring 124 is an arc-shaped stainless steel sheet, the arc length of which is approximately 1 / 2 of the flange 211 of the first bayonet groove. Fixed to the inner wall of the first bayonet groove 21 radially inside the flange 211, its clockwise starting end bends inward to form a 30-degree slope, facilitating the sliding in of the first mounting flange. The second spring 224 has a similar structure, fixed to the inner wall of the first bayonet groove 21 radially inside the flange 221 of the second bayonet groove, with its counterclockwise starting end forming a 30-degree slope, facilitating the sliding in of the second mounting flange. The free ends of both springs are elastic, providing clamping force after insertion into the locking groove.

[0045] According to one embodiment of this utility model, the installation process of the quick sealing device is as follows: Align the pipe fitting bayonet portion 2 with the first bayonet seat 11 and the second bayonet seat 12, and insert it axially, so that the first bayonet flange 111 is offset from the first bayonet groove flange 211, and the second bayonet flange 121 is offset from the second bayonet groove flange 221. Rotate the second pipe fitting clockwise, the first bayonet groove flange 211 engages with the first bayonet flange 111, the first locking pin 212 slides into the first locking groove 112, and the first spring 124 is embedded in the locking groove to provide clamping force. Rotate the second bayonet seat 12 counterclockwise, the second bayonet groove flange 221 engages with the second bayonet flange 121, the second locking pin 222 slides into 122, and the second spring 224 provides clamping force. The sealing bearing 13 ensures smooth rotation of the second bayonet seat 12, and the opposite rotation direction enhances vibration resistance. During disassembly, press the release button, the locking pin retracts, and rotate in the opposite direction to separate the pipe fitting.

[0046] According to one embodiment of this utility model, the sealing performance of the device is enhanced by sealing rings. The first sealing ring is a rubber O-ring, embedded in the annular groove on the end face surface of the first bayonet seat 11, and in contact with the first bayonet groove flange 211. The second sealing ring has the same structure, embedded in the annular groove on the end face surface of the second bayonet seat 12, and in contact with the second bayonet groove flange 221. The sealing rings deform under pressure, filling the gaps and preventing leakage. All flanges and groove walls are provided with a wear-resistant coating to extend service life.

[0047] The above is a detailed description of this embodiment. Those skilled in the art should understand that appropriate changes or modifications can be made to these steps without departing from the spirit and scope of this utility model to adapt to different application scenarios or needs.

[0048] Therefore, those skilled in the art should recognize that although many exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. A quick sealing device for pipe connections for detachably connecting a first pipe piece with a second pipe piece, characterized in that include: The first bayonet seat is fixed to the end of the first pipe fitting and has a first circular opening and multiple radially extending first bayonet flanges; The second bayonet seat is concentrically disposed outside the first bayonet seat, so that the first bayonet seat and the second bayonet seat can rotate relative to each other. The second bayonet seat has a second circular opening and multiple radially extending second bayonet flanges. The pipe fitting bayonet portion is provided at the end of the second pipe fitting and has a first bayonet groove and a second bayonet groove that respectively match the first bayonet seat and the second bayonet seat. The first bayonet groove cooperates with the first bayonet flange to rotate and lock in a first rotation direction, and the second bayonet groove cooperates with the second bayonet flange to rotate and lock in a second rotation direction opposite to the first rotation direction.

2. A quick sealing device for pipe connections according to claim 1, characterized in that The number of the first and second bayonet flanges are both three, and they are evenly distributed along the circumference of their respective bayonet seats.

3. A quick sealing device for pipe connections according to claim 1, characterized in that, The second bayonet seat is connected to the first bayonet seat via a sealed bearing.

4. A quick sealing device for pipe connections according to claim 1, characterized in that, The sealed bearing is a ball bearing, with the outer ring of the ball bearing fixedly connected to the second bayonet seat and the inner ring fixedly connected to the first bayonet seat.

5. A quick-sealing device for pipe connections according to claim 1, characterized in that, A sealing ring is provided between the first bayonet seat and the pipe fitting bayonet portion, and / or a sealing ring is provided between the second bayonet seat and the pipe fitting bayonet portion.

6. A quick sealing device for pipe connections according to claim 1, characterized in that, Also includes: A first locking pin is provided on the first bayonet seat and a second locking pin is provided on the second bayonet seat. When the first bayonet groove rotates to a predetermined position, the first locking pin is inserted into the first locking groove provided on the pipe fitting bayonet portion. When the second bayonet groove rotates to a predetermined position, the second locking pin is inserted into the second locking groove provided on the pipe fitting bayonet portion, so as to prevent the second pipe fitting from rotating relative to the first pipe fitting.

7. A quick sealing device for pipe connections according to claim 6, characterized in that Both the first locking pin and the second locking pin are connected to springs. The springs are located in the first bayonet seat and the second bayonet seat and are used to support the first locking pin and the second locking pin when stationary. The first locking pin and the second locking pin are also connected to a release button. The release button can move along the axial direction of the spring to drive the first locking pin and the second locking pin to move along the axial direction of the spring.

8. A quick sealing device for pipe connections according to claim 1, characterized in that, The inner diameter of the first bayonet mount is smaller than the inner diameter of the second bayonet mount.

9. A quick sealing device for pipe connections according to claim 1, characterized in that, Also includes: The first spring is provided on the first bayonet seat, and the first spring is provided on the side of the first bayonet flange along the axial direction of the first bayonet seat. The clockwise starting end of the first spring has a bevel structure so that it can slide into the corresponding locking groove when the pipe fitting is inserted into the bayonet. The second spring is provided on the second bayonet seat. The second spring is located on the side of the second bayonet flange along the axial direction of the second bayonet seat. The counterclockwise starting end of the second spring has a beveled structure so that it can slide into the corresponding locking groove when the pipe fitting is inserted.

10. A quick sealing device for pipe connections according to claim 1, characterized in that The outer surface of the second bayonet seat and the outer surface of the pipe fitting bayonet part are provided with anti-slip texture.

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