Bundy pipe joint with good sealing performance

Abstract

The utility model discloses a Bundy pipe joint with good sealing performance, which comprises a joint body, a Bundy pipe is arranged on the joint body, a connecting sleeve is arranged on the joint body, the connecting sleeve is fixedly welded on the connecting pipe, a plug is fixedly welded on the Bundy pipe, an external thread is arranged on the joint body, and the external thread is connected with the plug. An external thread is arranged on the inner cavity wall of the connecting sleeve, an internal thread matched with the external thread is arranged on the inner cavity wall of the connecting sleeve, a liquid guide cavity is formed in the connector body, the Bundy pipe and the plug are both connected in the liquid guide cavity in a sliding mode, a first sealing sleeve is fixedly bonded in the liquid guide cavity, and a sealing ring is arranged in the liquid guide cavity. The sealing performance of connection between the plug and the connector body can be improved through the first sealing sleeve and the sealing ring, and the limiting rods can be extruded on the plug after the connecting sleeve and the connector body are connected, so that the plug can be well pressed on the first sealing sleeve, the plug is prevented from loosening, and the service life of the plug is prolonged. And the sealing performance of connection between the plug and the first sealing sleeve is further improved.

Description

Technical Field

[0001] This utility model relates to the field of Bondi pipe fitting technology, specifically a Bondi pipe fitting with good sealing performance. Background Technology

[0002] Bundy tubing is manufactured by rolling, welding, and galvanizing cold-rolled steel strip. It is primarily used as a fluid or gas conduit in air conditioners, automobiles, refrigerators, and other related equipment, and has a wide range of applications.

[0003] Bondi tubes are connected using Bondi tube fittings. However, existing Bondi tube fittings tend to loosen after prolonged use, leading to poor sealing and leakage. To address this issue, we have proposed a Bondi tube fitting with superior sealing performance. Utility Model Content

[0004] The purpose of this invention is to provide a Bondi pipe fitting with good sealing performance to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a Bondi pipe fitting with good sealing performance, comprising:

[0006] The connector body includes a Bondi tube and a connecting sleeve, which are fixedly welded to the connecting pipe to be connected. A plug is fixedly welded to the Bondi tube. The connector body has external threads, and the inner wall of the connecting sleeve has internal threads that match the external threads. The connector body also has a liquid guiding cavity, in which the Bondi tube and the plug are slidably connected. A first sealing sleeve is fixedly bonded to the liquid guiding cavity, and a sealing ring is provided in the liquid guiding cavity.

[0007] Preferably, a plug sleeve is fixedly welded to the end of the connector body away from the Bondi tube, and a second sealing sleeve is fixedly adhered to the inner wall of the connecting sleeve.

[0008] Preferably, the end of the plug tube is provided with a conical shape.

[0009] Preferably, three annularly distributed limiting rods are fixedly welded to the inner wall of the connecting sleeve.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] In use, this utility model improves the sealing performance of the connection between the plug and the connector body by using the first sealing sleeve and sealing ring. The multiple limiting rods can press against the plug after the connecting sleeve is connected to the connector body, so that the plug can be well pressed on the first sealing sleeve, preventing the plug from loosening and further improving the sealing performance of the connection between the plug and the first sealing sleeve. The insertion sleeve and the second sealing sleeve can be inserted and matched to improve the sealing effect of the connection between the connecting sleeve and the connector body, preventing the refrigerant from flowing out from the connection gap between the external and internal threads, thereby greatly improving the sealing performance of the Bondi pipe connector after connection. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of a Bondi pipe connector with good sealing performance proposed in this utility model;

[0013] Figure 2 This is a three-dimensional structural diagram of the connector body in a Bondi pipe connector with good sealing performance proposed in this utility model.

[0014] Figure 3 This is a front view of the cross-sectional structure of the connection between the connector body and the connecting sleeve in a Bondi pipe connector with good sealing performance proposed in this utility model.

[0015] Figure 4 This utility model proposes a Bondi pipe fitting with good sealing performance. Figure 3 Enlarged structural diagram at point A in the middle.

[0016] In the diagram: 1. Connector body; 2. Bondi tube; 3. Connecting sleeve; 4. Plug; 5. External thread; 6. Internal thread; 7. Fluid guiding cavity; 8. First sealing sleeve; 9. Sealing ring; 10. Insert sleeve; 11. Second sealing sleeve; 12. Limiting rod. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-4 This utility model provides a technical solution: a Bondi pipe fitting with good sealing performance, comprising:

[0019] The connector body 1 has a Bondi tube 2 and a connecting sleeve 3, which are fixedly welded to the connecting pipe to be connected. A plug 4 is fixedly welded to the Bondi tube 2. The connector body 1 has an external thread 5, and the inner wall of the connecting sleeve 3 has an internal thread 6 that matches the external thread 5. The connector body 1 has a liquid guiding cavity 7, in which the Bondi tube 2 and the plug 4 are slidably connected. A first sealing sleeve 8 is fixedly bonded to the liquid guiding cavity 7, and a sealing ring 9 is provided in the liquid guiding cavity 7.

[0020] A plug-in sleeve 10 is fixedly welded to the end of the connector body 1 away from the Bondi tube 2. A second sealing sleeve 11 is fixedly bonded to the inner wall of the connecting sleeve 3. By plugging the plug-in sleeve 10 into the second sealing sleeve 11, the sealing effect of the connection between the connecting sleeve 3 and the connector body 1 can be improved, and the refrigerant can be prevented from flowing out from the connection gap between the external thread 5 and the internal thread 6.

[0021] The end of the plug tube 10 is provided with a cone shape, and the plug tube 10 with the cone-shaped end is easy to insert into the second sealing sleeve 11.

[0022] Three annularly distributed limiting rods 12 are fixedly welded to the inner wall of the connecting sleeve 3. The limiting rods 12 can be pressed onto the plug 4 after the connecting sleeve 3 is connected to the connector body 1, so that the plug 4 can be well pressed onto the first sealing sleeve 8, thereby improving the sealing performance of the connection between the plug 4 and the first sealing sleeve 8.

[0023] Working principle: In use, the first sealing sleeve 8 and sealing ring 9 improve the sealing performance of the connection between the plug 4 and the connector body 1. The multiple limiting rods 12 can press against the plug 4 after the connecting sleeve 3 is connected to the connector body 1, so that the plug 4 can be well pressed against the first sealing sleeve 8, preventing the plug 4 from loosening and further improving the sealing performance of the connection between the plug 4 and the first sealing sleeve 8. The insertion of the plug-in sleeve 10 and the second sealing sleeve 11 can improve the sealing effect of the connection between the connecting sleeve 3 and the connector body 1, preventing the refrigerant from flowing out from the connection gap between the external thread 5 and the internal thread 6, thereby greatly improving the sealing performance of the Bondi pipe connector after connection.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A Bondi pipe fitting with good sealing performance, characterized in that, include: The connector body (1) is provided with a Bondi tube (2) and a connecting sleeve (3). The connecting sleeve (3) is fixedly welded to the connecting pipe to be connected. A plug (4) is fixedly welded to the Bondi tube (2). An external thread (5) is provided on the connector body (1). An internal thread (6) that matches the external thread (5) is provided on the inner wall of the connecting sleeve (3). A liquid guiding cavity (7) is provided on the connector body (1). The Bondi tube (2) and the plug (4) are slidably connected in the liquid guiding cavity (7). A first sealing sleeve (8) is fixedly bonded in the liquid guiding cavity (7). A sealing ring (9) is provided in the liquid guiding cavity (7).

2. The Bondi pipe fitting with good sealing performance according to claim 1, characterized in that: The connector body (1) is fixedly welded to the end away from the Bundy tube (2) with a plug sleeve (10), and a second sealing sleeve (11) is fixedly bonded to the inner wall of the connecting sleeve (3).

3. A Bondi pipe fitting with good sealing performance according to claim 2, characterized in that: The end of the plug tube (10) is provided with a cone shape.

4. A Bondi pipe fitting with good sealing performance according to claim 1, characterized in that: Three ring-shaped equidistant limiting rods (12) are fixedly welded to the inner wall of the connecting sleeve (3).

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