Multifunctional connector device
By improving the structure of the flexible locking ring and support ring, the compression fitting of PFA material pipe joint was improved, which solved the problems of sealing and fluid transport blockage, and achieved better sealing and fluid flow.
Patent Information
- Application Number
- CN202520110832.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2035-01-17
AI Technical Summary
Existing compression fittings made of PFA material are prone to loosening under conditions of high temperature difference and high pressure, resulting in poor sealing performance. Furthermore, fluid particles are prone to accumulate and cause blockages, affecting fluid transportation.
The structure employs a flexible locking ring and a support ring. The locking ring limits the movement to prevent the nut from tightening and damaging the joint, while the support ring enhances friction to ensure a smooth transition connection and reduce gaps and particle accumulation.
It improves the sealing and tensile strength of the joint, prevents thread damage, ensures smooth fluid flow, and reduces the risk of particulate matter blockage.
Smart Images
Figure CN223563749U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a joint device technical field, especially a multifunctional joint device. BACKGROUND
[0002] Pipe joints are devices for connecting two pipes or a tank and a pipe, such as pipe joints between a semiconductor production field and a production device for storing related liquids or gases, and the like. Pipe joints are generally classified into welded joints, sleeve joints, buckling joints, flared joints, and the like. The welded joint connects a pipe and a joint by welding. The sleeve joint fixes a pipe by a sleeve and a nut. The buckling joint fixes a pipe in a joint by a buckling tool. The flared joint connects a pipe and a joint by a flaring process. Among them, the sleeve joint is widely used because of its convenient installation and use and good leakproof performance.
[0003] PFA pipe joints are used in manufacturing devices in the technical fields of semiconductors, medical / pharmaceuticals, food processing, and chemical industry, for conveying toxic, strong acid, strong alkali, and other substances harmful to human body contact. Although the existing sleeve PFA pipe joint meets the use needs to some extent, due to the structure, when used for pipes with corrosion, high or low temperature, and excessive pressure, the following disadvantages exist. First, the PFA hose material is relatively soft. If the worker twists the nut too tightly, the joint will be damaged (if the joint is damaged, the flatness of the inner wall after connection cannot be guaranteed, and many dead angles will be caused, leading to impurity residues). Moreover, when used for conveying fluids with large temperature difference, due to thermal expansion and contraction, the PFA joint and the connecting pipe (pipe) exist the probability of loosening, which will adversely affect the sealing effect. Second, as shown in the figure, since the existing sleeve PFA pipe joint is to connect two sleeve pipes together and then fix two flexible pipes in the two sleeve pipes, thus, two connecting grooves exist between the two sleeve pipes and the two pipes, and the connecting groove position is eccentric to the inner side of the two pipes, which will adversely affect the smooth conveying of the fluid. Accordingly, the particulate matter in the fluid is relatively easy to accumulate in the two connecting grooves between the inner side of the two pipes and the contact part of the sleeve pipe. After a long time, it will cause the inner diameter of the pipe to become smaller, causing the fluid conveying to be blocked or even completely blocked. Figure 1 Figure 1 In the figure, A represents two connecting grooves, B represents the contact of the sleeve with the liquid contact particulate pollution, C represents the accumulation of particles in the gap, and D represents the inner diameter shrinkage rate caused by the shrinkage of the sleeve pipe tip. INVENTION CONTENTS
[0004] To overcome the drawbacks of existing compression fittings due to structural limitations, as described in the background, this utility model provides a multi-functional fitting device that uses a flexible locking ring to limit movement, reducing the chance of damage to the fitting seat threads and providing better sealing. Because the connection between the inner sides of the two flexible pipes and the inner side of the fitting body sleeve is a smooth transition structure, and the existing gap is smooth and easy to clean, it ensures the smooth flow of liquid and reduces the chance of liquid particles clogging the inner side of the pipes.
[0005] The technical solution adopted by this utility model to solve its technical problem is:
[0006] A multifunctional connector device includes a nut, a locking ring, a support ring, and a connector body. The connector body has a polygonal retaining seat on its outer side at the center. The front and rear ends of the connector body each have a sleeve with external threads. The outer ends of the sleeves have connecting heads. There are at least two nuts, locking rings, and support rings. The support rings are hollow and have anti-slip teeth on their outer ends. One side of the locking ring is open, with its inner diameter larger than the outer diameter of the sleeve and its outer diameter smaller than the outer diameter of the retaining seat. The outer ends of the nuts have openings, and pipes are movably fitted inside the openings of the two nuts, with the inner diameter of the pipes smaller than the outer diameter of the support rings. The outer ends of the two support rings are tightly sealed to the inner ends of the two pipes. The two locking rings are installed at the front and rear ends of the connector body, and the inner sides of the two support rings are fitted onto the outer ends of the two connecting heads. The inner sides of the two nuts are screwed into the outer sides of the two sleeves of the connector body via threads.
[0007] Furthermore, the nut, support ring, connector body, and pipe are made of PFA material, and the locking ring is made of PPS material.
[0008] Furthermore, the locking ring has textured edges on both sides, and the outer diameter of the connector is smaller than the outer diameter of the outer end of the sleeve.
[0009] Furthermore, the outer diameter of the support ring is larger than the outer diameter of the connector.
[0010] Furthermore, the inner diameter of the opening at the outer end of the nut is larger than the outer diameter of the pipe.
[0011] Furthermore, the two sleeves of the connector body can be a straight line structure or a structure at any angle.
[0012] Compared with the prior art, the utility model has the advantages that the utility model has the location effect through the flexible locking ring effect, reduces the probability of damaging the joint seat body thread and the like, can better seal, and the texture is made on the locking ring, the friction is enhanced, the joint body tensile resistance is improved, the smooth structure is existed between the inside of the two flexible pipes and the inside of the joint body sleeve connector, the gap is smooth and easy to flush, the smoothness of conveying liquid is ensured, and the probability of blocking the inside of the pipe by the particles in the liquid is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0013] The utility model will be further explained in connection with the drawings and examples.
[0014] Figure 1 Is the existing structure diagram of the PFA material pipe joint of the clamp sleeve type.
[0015] Figure 2 Is the structure diagram of the utility model. DETAILED DESCRIPTION
[0016] Figure 2 As shown in the figure, a multifunctional joint device comprises a nut 1, a locking ring 2, a supporting ring 3, a joint body 4, the middle part outside of the joint body 4 has a hexagonal clamping seat 41 (convenient for wrenches and the like to be clamped and fixed), the front and rear ends of the joint body 4 have sleeves 42 respectively, the outer surface of the sleeve 42 has external threads 43, and the outside end of the sleeve 42 has a connector 44; the nut 1, the locking ring 2 and the supporting ring 3 are two respectively, the supporting ring 3 is a hollow structure and has anti-skid teeth 31 on the outside end thereof; one side of the locking ring 2 is an open structure 21, the inner diameter of the locking ring 2 is greater than the outer diameter of the thread 43, and the outer diameter of the locking ring 2 is slightly smaller than the outer diameter of the clamping seat 41; the outside end of the nut 1 has an opening 101 in the middle part thereof, the inner diameter of the pipe 5 is smaller than the outer diameter of the supporting ring 3, and the two nuts are movably sleeved with one flexible pipe 5 on the inside of the opening respectively; the outside end of the two supporting rings 3 is tightly sleeved on the inside end of the two pipes 5 respectively, the two locking rings 2 are installed on the front and rear ends of the joint body 4 respectively, the inside of the two supporting rings 3 is tightly sleeved on the outside of the connector 44, and the inside of the two nuts 1 is screwed into the thread 43 of the two sleeves 42 of the joint body through the thread respectively.
[0017] Figure 2The nut 1, the support ring 3, the joint body 4 and the pipeline 5 are made of PFA material, and the locking ring 2 is made of PPS material, as shown in the drawings. The locking ring 2 has a thread 22 on each side end. The outer diameter of the connecting head 44 is smaller than the outer diameter of the outer end of the sleeve 42. The inner diameter of the support ring 3 is slightly larger than the outer diameter of the connecting head 44. The inner diameter of the hole in the middle of the outer end of the nut 1 is slightly larger than the outer diameter of the pipeline 5. The two sleeves 42 of the joint body 4 are linear structures, and can also be 90-degree structures, and can also be 45-degree structures (including straight joints, three-way joints, 90-degree joints and 45-degree joints; all the joints are divided into equal-diameter and variable-diameter joints).
[0018] Figure 2 As shown in the drawings, in the actual installation of the utility model, the first step is to put the two locking rings 2 on the outer end of the sleeve 42 of the joint body 4 and close to the two outer end of the hexagonal clamping seat 41 of the joint body 4 (since the PFA material joint body 4 is relatively soft, if the nut 1 is twisted too tightly, the joint will be damaged, and since the locking ring can limit the position, it can prevent the joint body 4 from being damaged due to too tight twisting; specifically, some PFA joints will loosen when they encounter thermal expansion and contraction, and since the locking ring 2 has some reverse threads 22 on both sides, which are in close contact with the joint body and the inner side of the nut seat respectively, this situation can be prevented, and the sealing performance is guaranteed). The second step is to put a section of the two pipelines 5 in the middle of the two nuts into the holes respectively, then expand the inner diameter of the pipelines 5 by using an expanding tool respectively, then put the two support rings 3 on the expanding tool after expanding, and then put the support rings 3 into the inner side of the pipelines 5. Specifically, the pipeline 5 will shrink after cold expansion, which is very troublesome to process, but after the support ring 3 is put in, the inner side of the pipeline 5 has a supporting force, and the pipeline 5 can maintain the original state after expansion after the expanding tool is taken out, which facilitates processing. Since the outer side of the support ring has an anti-skid tooth 31, the friction force is enhanced, the tensile resistance of the joint body 4 is improved, and since the support ring 3 does not contact the liquid, the support ring 3 made of PPS material with better tensile resistance is used. The third step is to put the pipelines 5 with the support rings 3 into the connecting heads 44 respectively, and then screw the two nuts 1 into the two sleeves 42 of the joint body from the inner side by threads respectively, and then tighten the nuts.
[0019] Figure 2 As shown in the drawings, through the above, the utility model can limit the position through the flexible locking ring, reduce the probability of damaging the joint seat body thread, and have better sealing performance. Moreover, the thread is made on the locking ring to enhance the friction force and improve the tensile resistance of the joint body. Since the inner side of the two flexible pipelines and the inner side of the connecting head of the joint body sleeve are smooth and smooth, the gap is smooth and easy to flush, which not only ensures the smoothness of the liquid conveying, but also reduces the probability of pipeline inner side blockage by particles in the liquid.
[0020] The basic principle and main features of the present application and the advantages of the present application are shown and described above. For those skilled in the art, it is obvious that the present application is limited to the details of the above exemplary embodiments, and can be realized in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application.
[0021] In addition, it should be understood that, although the present application is described in the form of an embodiment, the embodiment does not only contain one independent technical solution, and the description manner of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in the embodiments can also be appropriately combined to form other embodiments that those skilled in the art can understand.
Claims
1. A multi-functional joint device comprising a nut, a lock ring, a support ring, a joint body, characterized in that, The middle part of the joint body has a polygonal seat, the front and rear ends of the joint body have sleeves, the outer part of the sleeve has external threads, the outer side end of the sleeve has a connector; the nut, the locking ring, and the support ring each have at least two, the support ring is a hollow structure and has anti-skid teeth on the outer side end; one side of the locking ring is an open structure, the inner diameter of the locking ring is larger than the outer diameter of the sleeve and the outer diameter of the locking ring is smaller than the outer diameter of the seat; the outer side end of the nut has an opening, the inner side of the opening of the two nuts respectively movably has a pipe, the inner diameter of the pipe is smaller than the outer diameter of the support ring; the outer side end of the two support rings is tightly sealed on the inner side end of the two pipes, the two locking rings are respectively installed on the front and rear ends of the joint body, the inner side of the two support rings is respectively sleeved on the outer side end of the two connectors, and the inner side of the two nuts is respectively screwed into the outer side of the two sleeves of the joint body.
2. A multi-functional joint device according to claim 1, wherein The nut, the support ring, the joint body, and the pipe are PFA materials, and the locking ring is PPS material.
3. A multi-functional joint device according to claim 1, wherein The two side ends of the locking ring respectively have a texture, and the outer diameter of the connector is smaller than the outer diameter of the outer side end of the sleeve.
4. The multi-functional joint device of claim 1, wherein The outer diameter of the support ring is larger than the outer diameter of the connector.
5. The multi-functional joint device of claim 1, wherein The inner diameter of the opening of the outer side end of the nut is larger than the outer diameter of the pipe.
6. The multi-functional joint device of claim 1, wherein The two sleeves of the joint body are in a straight line structure.