A beading type PFA integrated joint

Abstract

The utility model discloses a kind of into pearl type PFA integrated joint, belong to sealing joint technical field, including joint pipe, the joint pipe one end is butt welding end, the other end is into pearl end, the butt welding end welds the joint pipe with outside, the into pearl end connects the joint pipe with into pearl body, the into pearl body enters the joint pipe inside through the into pearl end, the end surface of the into pearl body and the end surface of the into pearl end are sealed contact;Self-locking nut, the self-locking nut is located the joint pipe outside and moves along the joint pipe length direction, the self-locking nut presses down the into pearl body.The utility model one end is into pearl type structure, the other end is butt welding type structure, it possesses simple structure, strong adaptability, sealed reliable and the characteristics of dismounting convenient, this PFA joint can satisfy semiconductor, medicine, chemical industry etc. one end temporary dismounting and one end permanent fixed pipeline connection demand in field, give consideration to the dismounting convenience of joint and sealing durability.

Description

Technical Field

[0001] This utility model belongs to the field of sealing joint technology, and in particular relates to a bead-type PFA integrated joint. Background Technology

[0002] In semiconductor electronic specialty gas delivery, pharmaceutical high-purity liquid transport, and chemical highly corrosive media pipeline systems, PFA material has become the core material of choice for pipelines and fittings due to its excellent chemical inertness (resistant to most acids and alkalis), low exudation (meeting ultra-high cleanliness standards), and high temperature resistance (long-term operating temperature -200℃ to 260℃). In such systems, pipeline connections need to adapt to different operating conditions: some scenarios (such as temporary maintenance interfaces at the equipment end) require easy disassembly and assembly, while others (such as long-distance fixed pipeline sections) require permanent sealing to avoid leakage risks.

[0003] There are generally two types of existing PFA connectors: one is the two-end ball-insertion PFA connector (i.e., both ends of the connector body have flared fitting holes to form a ball-insertion structure), and the other is the two-end butt-welded PFA connector (i.e., both ends of the connector body have straight pipe ends to form a butt-welded structure). Both of these connectors are single-type connection structures. Either both ends are ball-insertion (relying on ferrule compression for sealing, suitable for disassembly and assembly), or both ends are butt-welded (fixed by hot-melt welding, suitable for permanent sealing). When the pipeline system needs to simultaneously meet the requirements of "temporary disassembly and assembly at one end and permanent fixation at the other end", an additional adapter connector is required. This not only increases the complexity of pipeline assembly but also adds a connection sealing point, increasing the risk of leakage in the pipeline system (the more sealing points a PFA connector has, the higher the probability of leakage due to creep and vibration). Therefore, an integrated ball-insertion PFA connector is needed to integrate the ball-insertion structure and the butt-welded structure into the connector. Utility Model Content

[0004] This invention overcomes the shortcomings of the prior art by providing a bead-type integrated PFA connector to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a bead-type PFA integrated connector, comprising...

[0006] The connector tube has a butt-welding end at one end and a bead insertion end at the other end. The butt-welding end welds the connector tube to the outside, and the bead insertion end connects the connector tube to the bead insertion body. The bead insertion body enters the connector tube through the bead insertion end, and the end face of the bead insertion body is in sealed contact with the end face of the bead insertion end.

[0007] The self-locking nut is located outside the connector tube and moves along the length of the connector tube. The self-locking nut presses down the bead insert body to seal the end face of the bead insert body in contact with the end face of the bead insert.

[0008] In a preferred embodiment of this utility model, the bead insertion end is provided with a slot, and the end of the bead insertion body enters the slot to contact the bead insertion body with the connector tube.

[0009] In a preferred embodiment of this utility model, the slot is an annular groove, and the end of the bead insert body is provided with an annular protrusion, which cooperates with the annular groove.

[0010] In a preferred embodiment of this utility model, the outer surface of the connector tube is provided with an external thread, and the self-locking nut is threadedly connected to the connector tube. When the self-locking nut is rotated, it moves along the length direction of the connector tube.

[0011] In a preferred embodiment of this utility model, the self-locking nut is provided with a pressing surface, and the top of the bead insert body is provided with an insert arc surface. After the pressing surface contacts the insert arc surface, the self-locking nut presses down the insert body.

[0012] In a preferred embodiment of the present invention, a retaining ring is further included, which locks the connector tube to the self-locking nut.

[0013] In a preferred embodiment of this utility model, the self-locking nut has an edge arc surface, and the retaining ring has a retaining protrusion. The retaining protrusion cooperates with the edge arc surface to lock the connector tube to the self-locking nut.

[0014] This utility model solves the defects existing in the background technology, and has the following beneficial effects:

[0015] The present invention relates to a ball-inserted PFA integrated connector with a ball-inserted structure at one end and a butt-welded structure at the other end. It features a simple structure, strong adaptability, reliable sealing, and convenient assembly and disassembly. This PFA connector can meet the pipeline connection requirements of temporary disassembly and permanent fixation at one end in the fields of semiconductors, pharmaceuticals, and chemicals, taking into account both the ease of assembly and disassembly and the durability of sealing. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of the present invention;

[0018] Figure 2 This is a cross-sectional view of a preferred embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the connector tube according to a preferred embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the structure of the bead insert body in a preferred embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the structure of the self-locking nut of a preferred embodiment of the present invention;

[0022] In the diagram: 10, connector tube; 101, external thread; 11, butt weld end; 12, bead insertion end; 121, slot; 20, bead insertion body; 201, annular protrusion; 202, bead insertion arc surface; 30, self-locking nut; 301, lower pressure surface; 302, edge arc surface; 40, retaining ring; 401, snap-fit ​​protrusion. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0024] This embodiment provides a bead-type integrated PFA connector. One end of the bead-type integrated PFA connector has a bead-type structure, and the other end has a butt-welding structure. It has the characteristics of simple structure, strong adaptability, reliable sealing and convenient disassembly and assembly. This PFA connector can meet the pipeline connection requirements of temporary disassembly and permanent fixation at one end in the fields of semiconductor, pharmaceutical and chemical industries, and takes into account the convenience of disassembly and assembly and the durability of sealing.

[0025] Combination Figures 1 to 5 As shown, the ball-inserted PFA integrated connector of this embodiment includes a connector tube 10 and a self-locking nut 30. One end of the connector tube 10 is a butt-welding end 11, and the other end is a ball-inserting end 12. The butt-welding end 11 welds the connector tube 10 to the outside, and the ball-inserting end 12 connects the connector tube 10 to the ball-inserting body 20. In this embodiment, one end of the connector is welded to the outside as the butt-welding end 11, and the other end is detachably connected to the ball-inserting body 20 as the ball-inserting end 12. The self-locking nut 30 is located outside the connector tube 10 and moves along the length of the connector tube 10. The self-locking nut 30 presses down the ball-inserting body 20 to seal the end face of the ball-inserting body 20 in contact with the end face of the ball-inserting end 12. The presence of the self-locking nut 30 can press down the ball-inserting body 20. After being pressed down, the ball-inserting body 20 will contact the connector tube 10. After being pressed down, the ball-inserting body 20 and the connector tube 10 are in a sealed state, which can effectively prevent liquid leakage.

[0026] In this embodiment, the connector tube 10, the bead body 20, and the self-locking nut 30 are all PFA structural components, which are suitable for fluids with high purity, strong corrosion, high temperature, or high cleanliness requirements, thus meeting the pipeline usage needs in fields such as semiconductors, pharmaceuticals, and chemicals.

[0027] Combination Figures 1 to 4 As shown, in this embodiment, the bead inserter 20 enters the connector tube 10 through the bead insert end 12. The end face of the bead inserter 20 and the end face of the bead insert end 12 are in sealing contact. The bead insert end 12 is provided with a groove 121. The end of the bead inserter 20 enters the groove 121 to contact the bead inserter 20 with the connector tube 10. The groove 121 is an annular groove. The end of the bead inserter 20 is provided with an annular protrusion 201. The annular protrusion 201 cooperates with the annular groove. Under the squeezing action of the self-locking nut 30, the bead inserter 20 itself performs a downward pressing movement, so that the annular protrusion 201 at the end of the bead inserter 20 is stably embedded in the groove 121, ensuring the sealing effect between the bead inserter 20 and the connector tube 10.

[0028] In this embodiment, the self-locking nut 30 is provided with a pressing surface 301, and the top of the ball-inserting body 20 is provided with a ball-inserting arc surface 202. After the pressing surface 301 contacts the ball-inserting arc surface 202, the self-locking nut 30 presses down the ball-inserting body 20. During the movement of the self-locking nut 30, after the pressing surface 301 contacts the ball-inserting arc surface 202, the self-locking nut 30 continues to press down the ball-inserting body 20 until the ball-inserting body 20 is compressed to the minimum thickness, so that the ball-inserting body 20 and the connector tube 10 have a stable sealing contact.

[0029] Furthermore, the outer surface of the connector tube 10 is provided with an external thread 101, and the self-locking nut 30 is threadedly connected to the connector tube 10. When the self-locking nut 30 rotates, it moves along the length direction of the connector tube 10. In this embodiment, the self-locking nut 30 and the connector tube 10 are connected by a thread so that the self-locking nut 30 can press down on the bead body 20.

[0030] like Figure 1 As shown, the ball-type PFA integrated connector of this embodiment also includes a retaining ring 40. The retaining ring 40 locks the connector tube 10 to the self-locking nut 30. The self-locking nut 30 is provided with an edge arc surface 302. The retaining ring 40 is provided with a snap-fit ​​protrusion 401. The snap-fit ​​protrusion 401 cooperates with the edge arc surface 302 to lock the connector tube 10 to the self-locking nut 30. After the self-locking nut 30 has completed its movement, the retaining ring 40 connects the connector tube 10 to the self-locking nut 30, thereby fixing the connector tube 10 to the self-locking nut 30.

[0031] In practical use, the ball-inserted PFA integrated connector of this embodiment has a butt welding end 11 and a ball-inserting end 12. The butt welding end 11 welds the connector tube 10 to the outside, and the ball-inserting end 12 connects the connector tube 10 to the ball-inserting body 20. It has the characteristics of simple structure, strong adaptability, reliable sealing and convenient disassembly and assembly.

[0032] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A bead-type PFA integrated connector, characterized in that, include A connector tube (10) has a butt-welding end (11) at one end and a bead insertion end (12) at the other end. The butt-welding end (11) welds the connector tube (10) to the outside, and the bead insertion end (12) connects the connector tube (10) to the bead insertion body (20). The bead insertion body (20) enters the connector tube (10) through the bead insertion end (12), and the end face of the bead insertion body (20) and the end face of the bead insertion end (12) are in sealed contact. A self-locking nut (30) is located outside the connector tube (10) and moves along the length of the connector tube (10). The self-locking nut (30) presses down the bead insert body (20) to seal the end face of the bead insert body (20) with the end face of the bead insert end (12).

2. The integrated PFA connector with bead insertion according to claim 1, characterized in that, The bead insertion end (12) is provided with a slot (121), and the end of the bead insertion body (20) enters the slot (121) to contact the bead insertion body (20) with the connector tube (10).

3. The bead-type PFA integrated connector according to claim 2, characterized in that, The slot (121) is an annular groove, and the end of the bead insert body (20) is provided with an annular protrusion (201), which cooperates with the annular groove.

4. The bead-type PFA integrated connector according to claim 1, characterized in that, The outer surface of the connector tube (10) is provided with an external thread (101), and the self-locking nut (30) is threadedly connected to the connector tube (10). When the self-locking nut (30) rotates, it moves along the length direction of the connector tube (10).

5. The bead-type PFA integrated connector according to claim 4, characterized in that, The self-locking nut (30) has a pressing surface (301), and the top of the bead insert body (20) has an insert arc surface (202). After the pressing surface (301) contacts the insert arc surface (202), the self-locking nut (30) presses down the bead insert body (20).

6. The bead-type PFA integrated connector according to claim 1, characterized in that, It also includes a retaining ring (40) that locks the connector tube (10) to the self-locking nut (30).

7. The bead-type PFA integrated connector according to claim 6, characterized in that, The self-locking nut (30) has an edge arc surface (302), and the retaining ring (40) has a retaining protrusion (401). The retaining protrusion (401) cooperates with the edge arc surface (302) to lock the connector tube (10) and the self-locking nut (30).

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