Pipe joint structure
By introducing stop grooves, close grooves, external screw teeth and anti-retraction rods into the pipe joint structure of resin pipe fittings, the problems of fluid flow obstacles and loosening of locking nuts are solved, and higher closure is achieved Performance and stability.
Patent Information
- Application Number
- CN202421008038.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-10
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-05-10
AI Technical Summary
The pipe joints of existing resin pipe fittings are prone to poor sealing performance due to fluid flow obstacles and the reversal and loosening of the locking nut, which affects the fluidity of the fluid and may cause substance residue.
A pipe joint structure is designed, including the joint body, ring beads and nuts. By providing a stop groove, a fitting groove and external screw teeth on the outside of the pipe opening of the joint body, and an internal screw teeth on the front side of the nut With the anti-retardant rod, the inclined pushing part and anti-retardant groove are used to ensure that the pipe fittings are tightly locked with the joint body and prevent the nut from loosening.
It effectively prevents fluid flow obstacles and reversal and loosening of the locking nut, improves the sealing performance and stability of the pipe joints, and ensures high reliability during the fluid delivery process.
Smart Images
Figure CN222209475U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a pipe joint structure, in particular to a pipe joint structure used for resin pipe fittings. Background Art
[0002] The pipe joints for resin pipe fittings currently on the market mainly include a joint body, an inner ring and a locking nut. The sleeve-shaped inner ring is first pressed into one end of the resin pipe, and the end of the pipe that has been pressed into the inner ring is then inserted into the interface of the joint body. The locking nut that has been pre-sleeved on the pipe is then screwed onto the joint body. By pushing the locking nut and tightening it, the inner ring and one end of the pipe are firmly locked on the joint body to ensure high sealing performance. For example, the utility model patent No. 432176 in Taiwan, China discloses a resin pipe joint. For the pressing into one end of the pipe 12, a cylindrical protrusion 8 is provided at the protruding front end of the inner ring 2 integrated with the pipe 12, and a conical push-out surface 8a whose diameter becomes larger as it moves axially outward is formed by the inner diameter surface of the cylindrical protrusion 8. At the same time, the cylindrical protrusion 8 of the inner ring 2 including the conical push-out surface 8a is embedded axially in the inner deep part of the receiving port 4 of the joint body 1, and a cylindrical groove portion 6 is formed between the joint body 1 and the inner ring 2 to form the closed portions 7A and 7B. Even with the smaller locking force of the screwing of the pushing wheel 3, a strong contact pressure can be generated between the push-out surface 8a and the outer diameter surface 8b and the surfaces 10a and 4a opposite thereto, thereby ensuring extremely high and reliable sealing performance. However, the inner diameter of the inner ring is smaller than the inner diameter of the tube and the tube of the joint body, forming an inner protrusion inside the tube diameter, which becomes an obstacle to the flow of fluid, not only affecting the fluidity of the fluid, but also causing the problem of residual material adhesion.
[0003] Secondly, the high sealing performance of the pipe joint depends on the locking nut and the thread of the joint body being screwed together and locked. When the pipe is conveying fluid materials, there may be vibration, pulsation or collision, and the locking nut may reverse and loosen, causing leakage. Utility Model Content
[0004] In view of this, the present application proposes a pipe joint structure to prevent fluid flow obstruction and the locking nut from being reversed and loosened.
[0005] Technical solution: The pipe joint structure consists of a joint body, a bead ring and a nut, wherein:
[0006] The outer side of the pipe opening of the joint body is provided with a stop groove, a sealing groove and an external thread in sequence from the inside to the outside in the radial direction, and a plurality of anti-retraction grooves are provided on the rear side of the external thread;
[0007] The bead is a hollow ring-shaped body, the outer side of the ring wall is gradually thinner towards the front and rear sides, and the cross section of the ring wall of the bead is triangular;
[0008] The front inner side of the nut is provided with an inner thread, the rear side of the inner thread is provided with an oblique push portion, and the front side edge ring of the nut is provided with a plurality of anti-retraction rods;
[0009] The stop groove of the pipe opening of the joint body is used for one side of the ring bead to abut against, and the nut is screwed on the outer side of the pipe opening of the joint body, and the inner thread teeth on the inner side of the nut are meshed with the outer thread teeth on the outer side of the pipe opening of the joint body.
[0010] Furthermore, two anti-retraction grooves are symmetrically provided on the rear side of the external thread of the joint body.
[0011] Furthermore, a plurality of anti-recoil rods are symmetrically arranged around the edge of the front port of the nut, and the anti-recoil rods are matched with the anti-recoil grooves.
[0012] When the resin pipe fitting is to be connected to the pipe joint, the nut is first inserted into the pipe fitting, and then the bead is inserted into the pipe opening at one end of the pipe fitting, and then inserted into the joint body together, and the pipe opening at one end of the pipe fitting is inserted into the close-fitting groove, and one side of the bead is against the stop groove, and then the nut is screwed onto the pipe opening of the joint body, and the nut is pushed and tightened, so that the oblique push part on the rear side pushes the pipe fitting and the bead, so that the pipe fitting and the bead are pressed against the pipe opening, the stop groove and the close-fitting groove of the joint body, so that the pipe fitting and the joint body are tightly locked on the joint body.
[0013] Another purpose of the utility model is to provide two anti-retraction grooves on the rear side of the external thread of the outer side of the pipe mouth of the joint body, and provide a plurality of anti-retraction rods matched with the anti-retraction grooves on the edge of the front port of the nut. When the nut is screwed into the pipe mouth of the joint body and continues to be screwed in until it is locked, the anti-retraction rods at the front port of the nut will be stuck in the anti-retraction grooves on the rear side of the external thread of the outer side of the pipe mouth of the joint body, thereby preventing the nut from loosening.
[0014] Beneficial effects: The pipe joint structure disclosed by the utility model can effectively prevent the occurrence of situations due to fluid flow obstruction and reverse loosening of the locking nut. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.
[0016] Figure 2 It is a cross-sectional schematic diagram of the utility model.
[0017] Figure 3 It is a schematic diagram of the installation of the inner ring bead of the utility model.
[0018] Figure 4 It is a schematic diagram of the plugging operation of the pipe joint body of the utility model.
[0019] Figure 5 It is a cross-sectional schematic diagram of the utility model in the implementation state.
[0020] Figure 6 It is a three-dimensional schematic diagram of the utility model in the implementation state.
[0021] Figure 7 It is a schematic diagram of the implementation of the utility model and the elbow joint.
[0022] in:
[0023] 10-Connector body 10'-Elbow Connector 11-Stop groove 12-Sealing groove 13-External thread 14-Anti-recession groove 20-ring beads 30-Nut 31-Internal thread 32- Oblique Push 33-Anti-recoil rod 40-Pipe fittings DETAILED DESCRIPTION
[0024] The following is a detailed description of the present invention and its technical solutions with the help of specific embodiments and drawings:
[0025] See also Figure 1 , 2 A pipe joint structure, in particular a pipe joint structure for a resin pipe, comprises a joint body 10, a bead ring 20 and a nut 30, wherein:
[0026] The outer side of the pipe mouth of the joint body 10 is provided with a stop groove 11, a sealing groove 12 and an external thread 13 in radial order from the inside to the outside, and a plurality of anti-retraction grooves 14 are provided on the bottom side of the external thread 13. Figure 1 and Figure 2 As shown, two anti-retraction grooves 14 are provided on the bottom side of the external thread 13;
[0027] The bead 20 is a hollow ring-shaped body as a whole, and the outer side of the ring wall is gradually thinner toward the front and rear sides, and the cross section of the ring wall of the bead 20 is triangular;
[0028] The front inner side of the nut 30 is provided with an inner thread 31, the rear side of the inner thread 31 is provided with an oblique push portion 32, and the front side edge ring of the nut 30 is provided with a plurality of anti-retraction rods 33;
[0029] The stop groove 11 provided at the pipe mouth of the joint body 10 is used for one side of the ring bead 20 to abut, and the nut 30 is screwed on the outer side of the pipe mouth of the joint body 10, and the inner thread 31 provided on the inner side thereof is meshed with the outer thread 13 on the outer side of the pipe mouth of the joint body 10.
[0030] When the nut 30 is screwed into the connector body 10 until it is tightened, the anti-retraction rod 33 at the front end of the nut 30 will be stuck in the anti-retraction groove 14 at the rear side of the external thread 13 outside the pipe mouth of the connector body 10 to prevent the nut 30 from loosening.
[0031] Furthermore, the anti-retreat rod 33 is adapted to the position of the anti-retreat groove 14 .
[0032] During implementation, when the resin pipe 40 is to be connected to the pipe joint, the nut 30 is first inserted into the pipe 40, and then the bead 20 is inserted into the pipe opening at one end of the pipe 40 (such as Figure 3 As shown), the pipe end of the pipe fitting 40 which has been inserted into the ring bead 20 is inserted into the connector body 10 (as shown in FIG. Figure 4 As shown), insert one end of the pipe fitting 40 into the sealing groove 12, and one side of the ring bead 20 abuts against the stop groove 11, then screw the nut 30 onto the pipe opening of the joint body 10, and tighten the nut 30 so that the oblique push portion 32 at the rear side pushes the pipe fitting 40 and the ring bead 20, so that the pipe fitting 40 and the ring bead 20 abut against the pipe opening, the stop groove 11 and the sealing groove 12 of the joint body 10, so that the pipe fitting 40 and the joint body 10 are tightly locked on the joint body (as shown). Figure 5 , 6 shown).
[0033] When the nut 30 is screwed into the connector body 10 and locked, the anti-retraction rod 33 at the front end of the nut 30 will be stuck in the anti-retraction groove 14 on the rear side of the external thread 13 on the outer side of the pipe mouth of the connector body 10 to prevent the nut 30 from loosening. The anti-retraction rod 33 on the nut 30 and the anti-retraction groove 14 on the connector body 10 are engaged with each other. When the pipe 40 is in the working state of conveying fluid materials, in the event of vibration, pulsation or collision, the nut 30 can be prevented from reversing and loosening.
[0034] The pipe joint structure disclosed in the utility model can be applied to other types of pipe joints in actual operation and application, such as elbow joints, two-way joints, multi-way joints (such as three-way joints, four-way joints, etc.), please refer to Figure 7 The illustrated embodiment is a schematic diagram of an implementation of an elbow joint 10 ′.
[0035] The above describes the implementation of the present invention in detail. However, the present invention is not limited to the above implementation, and various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.
Claims
1. A pipe joint structure, characterized in that: It consists of a connector body, a bead and a nut, including: The outer side of the pipe opening of the joint body is provided with a stop groove, a sealing groove and an external thread in sequence from the inside to the outside in the radial direction, and a plurality of anti-retraction grooves are provided on the rear side of the external thread; The bead is a hollow ring-shaped body, the outer side of the ring wall is gradually thinner towards the front and rear sides, and the cross section of the ring wall of the bead is triangular; The front inner side of the nut is provided with an inner thread, the rear side of the inner thread is provided with an oblique push portion, and the front side edge ring of the nut is provided with a plurality of anti-retraction rods; The stop groove of the pipe opening of the joint body is used for one side of the ring bead to abut against, and the nut is screwed on the outer side of the pipe opening of the joint body, and the inner thread teeth on the inner side of the nut are meshed with the outer thread teeth on the outer side of the pipe opening of the joint body.
2. The pipe joint structure according to claim 1, characterized in that: Two anti-retraction grooves are symmetrically arranged on the rear side of the external thread of the joint body.
3. The pipe joint structure according to claim 1, characterized in that: A plurality of anti-recoil rods are symmetrically arranged on the edge of the front port of the nut, and the anti-recoil rods are matched with the anti-recoil grooves.