Multifunctional connector device
By adopting a flexible locking ring and support ring structure in the ferrule PFA material pipe joint, the joint damage, poor sealing and poor fluid delivery when used in corrosive, temperature changes or high and low pressure environments is solved, and better sealing, tensile resistance and fluid smoothness are achieved.
Patent Information
- Application Number
- CN202510075085.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2025-03-14
AI Technical Summary
When used in corrosive, temperature changes or high and low pressure environments, existing plug-in PFA material pipe joints are prone to damage, poor sealing and poor fluid delivery, resulting in particle accumulation and pipeline blockage.
The flexible locking ring and support ring structure are adopted. Through the limiting effect of the locking ring and the anti-slip tooth design of the support ring, the joint damage and looseness are reduced, the sealing and tensile resistance are enhanced, and the smooth joint structure and gap design are designed to ensure fluid smoothness.
It effectively reduces joint damage and looseness, improves sealing and tensile resistance, ensures fluid unobstructed, and reduces the risk of particulate blockage.
Smart Images
Figure CN119617224A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of joint equipment, in particular to a multifunctional joint device. Background Art
[0002] Pipe fittings are devices that connect two pipes or between a tank and a pipe (for example, in the field of semiconductor production, pipe fittings between storage-related liquids or gases and production equipment, etc.). Pipe fittings are generally divided into welded fittings, ferrule fittings, crimped fittings, flared fittings, etc. Welded fittings connect the pipe to the fitting by welding, ferrule fittings fix the pipe with ferrules and nuts, crimped fittings fix the pipe in the fitting with crimping tools, and flared fittings require a flaring process to connect the pipe to the fitting. Among them, ferrule fittings are more convenient to install and use, and have better leak-proof performance, so they are widely used.
[0003] PFA pipe joints are used in manufacturing equipment in technical fields such as semiconductors, medical / pharmaceuticals, food processing, and chemical industries to transport toxic, strong acids, strong alkalis, and other substances that are harmful to human contact. Although the existing ferrule-type PFA pipe joints meet the use needs to a certain extent, due to structural limitations, when used in pipes that are corrosive, have high or low temperatures, or have excessive pressures, they still have the following disadvantages. First: Since the PFA hose material is relatively soft, if the staff tightens the nut too much, it will damage the joint (if the joint is damaged, the flatness of the inner wall after connection cannot be guaranteed, there will be many dead corners, resulting in impurities remaining), and when used for fluid transportation with a large temperature difference, due to the effects of thermal expansion and contraction, there is a chance of looseness between the PFA joint and the connecting pipe (pipeline), which will also have an adverse effect on the sealing effect. Second: If Figure 1 As shown, the existing ferrule-type PFA pipe joint is to clamp two sleeves together and then fix two flexible pipes in the two sleeves. In this way, there are two connecting grooves between the two sleeves and the two pipes, and the positions of the connecting grooves and the inner sides of the two pipes are not concentric. This will have an adverse effect on the smooth transportation of the fluid. Correspondingly, particulate matter in the fluid is relatively easy to accumulate in the two connecting grooves between the inner sides of the two pipes and the contact parts of the sleeves. After a long time, the inner diameter of the inner side of the pipe will become smaller, causing the fluid transportation to be obstructed or even completely blocked. Summary of the invention
[0004] In order to overcome the drawbacks of existing ferrule-type joints as described in the background due to structural limitations, the present invention provides a multifunctional joint device which can play a limiting role through the action of a flexible locking ring, thereby reducing the probability of damaging the threads of the joint seat body, etc. and achieving better sealing. Since there is a smooth transition structure between the inner sides of the two flexible pipes and the inner side of the connecting head of the joint body sleeve, and the existing gap is smooth and easy to flush, it not only ensures the smoothness of the conveyed liquid, but also reduces the probability of particulate matter in the liquid clogging the inner side of the pipe.
[0005] The technical solution adopted by the present invention to solve its technical problem is: A multifunctional joint device comprises a nut, a locking ring, a supporting ring and a joint body, wherein the outer side of the middle part of the joint body is provided with a polygonal socket, the front and rear ends of the joint body are respectively provided with sleeves, the outside of the sleeve is provided with an external thread, and the outer end of the sleeve is provided with a connecting head; there are at least two of the nut, the locking ring and the supporting ring, respectively, the supporting ring is a hollow structure and its outer end is provided with anti-slip teeth; 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 socket; there is an opening at the outer end of the nut, and pipes are movably sleeved on the inner sides of the openings of the two nuts, and the inner diameter of the pipes is smaller than the outer diameter of the supporting rings; the outer ends of the two supporting rings are respectively sealed and tightly sleeved on the inner ends of the two pipes, the two locking rings are respectively installed on the front and rear ends of the joint body, the inner sides of the two support rings are respectively sleeved on the outer ends of the two connecting heads, and the inner sides of the two nuts are respectively screwed into the outer sides of the two sleeves of the joint body through threads.
[0006] Furthermore, the nut, the support ring, the joint body, and the pipe are made of PFA material, and the locking ring is made of PPS material.
[0007] Furthermore, both side ends of the locking ring have textures respectively, and the outer diameter of the connector is smaller than the outer diameter of the outer end of the sleeve.
[0008] Furthermore, the outer diameter of the support ring is greater than the outer diameter of the connector.
[0009] Furthermore, the inner diameter of the opening at the outer end of the nut is larger than the outer diameter of the pipe.
[0010] Furthermore, the structure between the two sleeves of the joint body is a straight line, and can also be a structure at any angle.
[0011] Compared with the prior art, the present invention has the following beneficial effects: the present invention can play a limiting role through the flexible locking ring, reduce the probability of damaging the thread of the joint seat body, and can play a better sealing role, and make a pattern on the locking ring to enhance the friction force and improve the tensile resistance of the joint body. Since the inner sides of the two flexible pipes and the inner side of the connector of the joint body sleeve are smooth transition structures and the existing gap is smooth and easy to flush, it not only ensures the smoothness of the conveyed liquid, but also reduces the probability of particles in the liquid blocking the inner side of the pipe. In summary, the present invention has good application prospects. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0013] Figure 1 It is a schematic diagram of the structure of an existing ferrule-type PFA pipe joint.
[0014] Figure 2 It is a schematic diagram of the structure of the present invention.
[0015] Figure 3 It is a photo of the actual product of the present invention. DETAILED DESCRIPTION
[0016] Figure 2 As shown in, a multifunctional joint device includes a nut 1, a locking ring 2, a support ring 3, and a joint body 4. The middle outer side of the joint body 4 has a hexagonal card seat 41 (convenient for a wrench to be inserted and fixed), and the front and rear ends of the joint body 4 are respectively provided with sleeves 42, and the outer surface of the sleeve 42 has an external thread 43, and the outer end of the sleeve 42 has a connector 44; the nut 1, the locking ring 2, and the support ring 3 are respectively two, and the support ring 3 is a hollow structure and its outer end has anti-slip teeth 31; one side of the locking ring 2 is an open structure 21, and 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 are slightly smaller than the outer diameter of the holder 41; there is an opening 101 in the middle of the outer end of the nut 1, the inner diameter of the pipe 5 is smaller than the outer diameter of the support ring 3, and a flexible pipe 5 is movably sleeved on the inner side of the openings of the two nuts; the outer ends of the two support rings 3 are respectively sealed and tightly sleeved on the inner ends of the two pipes 5, the two locking rings 2 are respectively installed at the front and rear ends of the joint body 4, the inner sides of the two support rings 3 are respectively tightly sleeved on the outer side of the connector 44, and the inner sides of the two nuts 1 are respectively screwed into the threads 43 of the two sleeves 42 of the joint body through threads.
[0017] Figure 2As shown in the figure, the nut 1, the support ring 3, the joint body 4, and the pipe 5 are made of PFA material, and the locking ring 2 is made of PPS material. The two side ends of the locking ring 2 have textures 22 respectively. The outer diameter of the connector 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 connector 44. The inner diameter of the opening in the middle of the outer end of the nut 1 is slightly larger than the outer diameter of the pipe 5. The two sleeves 42 of the joint body 4 are in a straight line structure, and can also be a 90-degree structure, or a 45-degree structure (including straight-through joints, three-way joints, 90-degree joints, and 45-degree joints; all joints are divided into equal diameter and variable diameter, etc.).
[0018] Figure 2 As shown in , when the present invention is actually installed, the first step is to respectively put the two locking rings 2 on the outer ends of the sleeve 42 of the joint body 4 and close to the two outer ends of the hexagonal seat 41 of the joint body 4 (because the PFA material joint body 4 is relatively soft, if the nut 1 is twisted too tight, it will damage the joint. Since the locking ring will play a limiting role, it can prevent the joint body 4 from being damaged due to over-tightening. Specifically, some PFA joints will loosen when encountering thermal expansion and contraction. Since there are some reverse lines 22 on both sides of the locking ring 2, which are in close contact with the joint body and the inner side of the nut seat, this situation can be prevented from happening, and the sealing is guaranteed). Step 2: Put a section of the middle of the two pipes 5 into the openings of the two nuts respectively, and then use the expansion tool to expand the inner diameter of the inner side of the pipe 5 respectively. After expansion, put the two support rings 3 on the expansion tool respectively, and then drive the support ring 3 into the inner side of the pipe 5. Specifically, the pipe 5 will shrink after cold expansion, which is very troublesome to process. However, after the support ring 3 is driven into the present invention, the inner side of the pipe 5 has a supporting force, and the pipe 5 can still maintain its original state after expansion after the expansion tool is taken out, which is convenient for processing; because the outer side of the support ring has anti-slip teeth 31, the friction force is enhanced and the tensile resistance of the joint body 4 is improved. In addition, because the support ring 3 does not contact the liquid, the support ring 3 made of PPS material with better tensile resistance is used. Step 3: Put the pipes 5 that have been inserted with the support ring 3 on the connector 44 respectively, and screw the inner sides of the two nuts 1 into the outer sides of the two sleeves 42 of the joint body through threads, and tighten the nuts.
[0019] Figure 2 As shown above, the present invention can play a limiting role through the action of the flexible locking ring, reduce the probability of damaging the thread of the joint seat body, and can achieve better sealing, and patterns are made on the locking ring to enhance friction and improve the tensile strength of the joint body. Since there is a smooth transition structure between the inner sides of the two flexible pipes and the inner side of the connecting head of the joint body sleeve, and the existing gap is smooth and easy to flush, it not only ensures the smoothness of the conveyed liquid, but also reduces the probability of particulate matter in the liquid clogging the inner side of the pipe.
[0020] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention.
[0021] In addition, it should be understood that although the present specification is described according to the implementation mode, the implementation mode does not only include an independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in the embodiments can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. A multifunctional joint device, comprising a nut, a locking ring, a support ring, and a joint body, wherein the middle outer side of the joint body has a polygonal card seat, the front and rear ends of the joint body are respectively provided with a sleeve, the outside of the sleeve has an external thread, and the outer end of the sleeve has a connecting head; the nut, the locking ring, and the support ring are respectively provided with at least two, the support ring is a hollow structure and its outer end has anti-slip teeth; 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 card seat; the outer end of the nut has an opening, and the inner sides of the openings of the two nuts are respectively movably sleeved with pipes, and the inner diameter of the pipe is smaller than the outer diameter of the support ring; the outer ends of the two support rings are respectively sealed and tightly sleeved on the inner ends of the two pipes, the two locking rings are respectively installed on the front and rear ends of the joint body, the inner sides of the two support rings are respectively sleeved on the outer ends of the two connecting heads, and the inner sides of the two nuts are respectively screwed into the outer sides of the two sleeves of the joint body through threads.
2. A multifunctional connector device according to claim 1, characterized in that: The nut, support ring, connector body and pipe are made of PFA, and the locking ring is made of PPS.
3. A multifunctional connector device according to claim 1, characterized in that: Both side ends of the locking ring are respectively provided with textures, and the outer diameter of the connector is smaller than the outer diameter of the outer end of the sleeve.
4. A multifunctional connector device according to claim 1, characterized in that: The outer diameter of the support ring is larger than the outer diameter of the connecting head.
5. The multifunctional connector device according to claim 1, characterized in that: The inner diameter of the opening at the outer end of the nut is larger than the outer diameter of the pipe.
6. A multifunctional connector device according to claim 1, characterized in that: The two sleeves of the joint body are in a straight line structure or in any angle structure.