Pipeline connecting device
By incorporating O-rings, release rings, and pull-out rings into the pipe connection joints, combined with U-grooves and cutting tooth structures, the problem of insufficient pipe connection sealing is solved, resulting in a pipe connection device with high sealing and pull-out resistance.
Patent Information
- Application Number
- CN202520039872.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-08
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-01-08
AI Technical Summary
Existing pipe connection methods suffer from insufficient sealing and are prone to leakage, failing to meet the demands of modern industry for high reliability and high sealing.
It adopts a pipe connection joint with an internal O-ring, release ring and pull-out ring. Through the design of U-groove and stepped protrusion structure, combined with cutting teeth and outward turning teeth, it ensures sealing and pull-out resistance during the compression process and prevents leakage.
Provides pipe connection devices with high sealing performance, ensuring permanent sealing of press-fit fittings, preventing pipe rotation and pull-out, and improving the strength and reliability of the connection.
Smart Images
Figure CN223825806U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to pipeline connection technical field especially relates to a pipeline connecting device. BACKGROUND
[0002] With the development of our country's economy, the demand of petroleum, chemical industry, water supply, gas industry to pipeline connection technology is increasing, and the firmness and sealing of pipeline connection are paid more and more attention. The traditional pipeline connection mode has welding, screw connection and clamping connection, and the welding mode is to melt the two ends of the pipeline by heating to the melting point, and form an integrated connection after solidification. The screw connection is to connect two pipelines together through screw thread cooperation. The clamping connection is to compress the stainless steel pipe and fittings by special clamping tool, that is, the pipe fitting is inserted into the pipe end, and then the clamping tool is used to compress it, forming a tight connection. If the installation operation is improper, the above-mentioned connection modes may cause pipeline fluid leakage, resulting in huge loss, and the defects of the inner wall of the pipeline itself also provide the opportunity for leakage after compression. As can be seen, the traditional connection mode cannot meet the high requirements of modern industry on pipeline connection technology, therefore, it is of great practical significance to research a pipeline connection device with high reliability, high sealing, easy installation and maintenance. SUMMARY
[0003] The utility model aims at providing a pipeline connecting device, which solves the problem of insufficient sealing and easy leakage in the existing pipeline connection.
[0004] To solve the above technical problems, the utility model adopts the following technical scheme:
[0005] The utility model relates to a pipeline connecting device, which comprises a pipeline connecting joint, first and second pipelines are arranged on the left and right sides of the pipeline connecting joint respectively, an intermediate section is arranged at the middle position of the pipeline connecting joint, U-shaped grooves are arranged at both ends of the pipeline connecting joint, O-rings, separation rings and anti-pulling rings are arranged in the U-shaped grooves in sequence, and the O-rings are arranged on the side close to the intermediate section.
[0006] Further, the inner diameter of the intermediate section is smaller than that of the pipeline connecting joint, and the inner diameter of the U-shaped groove is larger than that of the pipeline connecting joint.
[0007] Still further, first and second groove bodies are arranged in the U-shaped groove, the inner diameter of the first groove body is larger than that of the second groove body, and a stepped protrusion is formed at the connection position of the first and second groove bodies.
[0008] Further, the anti-pulling ring is provided with a notch, and the inner side of the anti-pulling ring is provided with a plurality of cutting teeth which are uniformly distributed along the circumference, and every several cutting teeth are provided with one everted tooth along the circumferential direction.
[0009] Further, the cutting tooth is inwardly inclined at an angle of 40-50°.
[0010] Further, the outer edge diameter of the everted tooth is the same as the inner diameter of the U-shaped groove, and the top end of the everted tooth is attached to the stepped protrusion.
[0011] Further, the cutting tooth is inwardly inclined at an angle of 40-50°.
[0012] Further, the cutting tooth is inwardly inclined at an angle of 40-50°.
[0013] Further, the cutting tooth is inwardly inclined at an angle of 40-50°.
[0014] Compared with the prior art, the anti-pulling pipeline connecting device has the beneficial technical effects that:
[0015] The utility model provides a kind of high sealing performance's anti-pulling pipeline connecting device, to guarantee that card pressure pipe fitting is more firm permanent sealing, specific including pipeline connecting joint, pipeline connecting joint is a kind of especially used in the accessory in pipeline connecting system, for connecting pipeline / tube, wherein using separate tool is compressed into leakproof and structurally feasible joint with accessory and pipeline;Anti-pulling ring can be acted on in the specified U-shaped groove in the inside of pipeline connecting joint with O type ring and separation ring, and arrange in order;During card pressure process, the role of separation ring is to separate O type ring and anti-pulling ring and protect O type ring;Anti-pulling ring is composed of several irregular tooth rings, arrange in the side facing pipeline end, when being extruded, they will be embedded in the material of pipeline end under external force, effectively prevent pipeline rotation, therefore, anti-pulling ring has the effect of preventing pipeline pulling out;O type ring can be fixed in the side facing pipeline end, separation ring and anti-pulling ring are located in the side away from liquid, and pipeline system is not polluted. BRIEF DESCRIPTION OF DRAWINGS
[0016] The utility model will be further described below in connection with the drawings.
[0017] Figure 1 It is the explosion view of the utility model pipeline connecting device;
[0018] Figure 2 It is the section view of the utility model pipeline connecting device;
[0019] Figure 3 It is the position relation schematic view of cutting tooth in U-shaped groove inside in the utility model not under pressure;
[0020] Figure 4 It is the position relation schematic view of the outer turning tooth in the U-shaped groove under the non-pressing state of the utility model;
[0021] Figure 5 It is the position relation schematic view of the cutting tooth in the U-shaped groove under the pressing state of the utility model;
[0022] Figure 6 It is the three-dimensional structure schematic view of the anti-pulling ring of the utility model;
[0023] Figure 7 It is Figure 6 The enlarged view of A in the middle;
[0024] Figure 8 It is the front view of the anti-pulling ring of the utility model;
[0025] Figure 9 It is Figure 8 The enlarged view of B in the middle.
[0026] Mark for explaining: 1, pipeline connecting joint; 2, O ring; 3, separation ring; 4, anti-pulling ring; 5, first pipeline; 6, second pipeline; 1-1, intermediate section; 1-2, U-shaped groove; 1-2-1, first groove body; 1-2-2, second groove body; 4-1, cutting tooth; 4-1-1, circular arc surface; 4-2, outer turning tooth; 4-3, V-shaped groove; 4-4, small sawtooth-shaped protrusion. Specific implementation
[0027] As Figures 1-9 shown, a pipeline connecting device, including pipeline connecting joint 1, the left and right sides of the pipeline connecting joint 1 are inserted into first pipeline 5 and second pipeline 6 respectively, the intermediate position of the pipeline connecting joint 1 is provided with intermediate section 1-1, both ends of the pipeline connecting joint 1 are provided with U-shaped groove 1-2, the inside of the U-shaped groove 1-2 is sequentially installed with O ring 2, separation ring 3 and anti-pulling ring 4, the O ring 2 is installed on the side close to the intermediate section 1-1, and O ring 2 is made of elastic material, when pipeline is compressed, O ring 2 is deformed by extrusion, and sealing is formed between the pipeline connecting joint 1 and first pipeline 5 and the pipeline connecting joint 1 and second pipeline 6, effectively preventing the leakage of liquid or gas in the pipeline; separation ring 3 is located between anti-pulling ring 4 and O ring 2, separation ring 3 is made of plastic material with sufficient strength, and the role is to isolate anti-pulling ring 4 and O ring 2, mainly to avoid damage to O ring 2 caused by anti-pulling ring 4 in the extrusion process; in addition, anti-pulling ring 4 is located at the end away from the intermediate section 1-1, and the material can be copper or stainless steel material, after the pipeline system is pressed, due to the compression deformation of O ring 2, the gap between anti-pulling ring 4 and separation ring 3 in the U-shaped groove 1-2 is filled to form sealing, avoiding the pollution of the anti-pulling ring material to the inside of the pipeline system.
[0028] The inner diameter of the intermediate section 1-1 is smaller than the inner diameter of the pipe joint 1, and the insertion depth of the first pipe 5 and the second pipe 6 is determined by the intermediate section 1-1, and the diameter of the pipe joint 1 becomes smaller at the intermediate section 1-1 to prevent the first pipe 5 and the second pipe 6 from penetrating further; the inner diameter of the U-shaped groove 1-2 is larger than the inner diameter of the pipe joint 1, that is, the diameter of the U-shaped groove 1-2 is larger than the diameter of other parts of the pipe joint 1, to accommodate the O-ring 2, the separation ring 3 and the anti-pull ring 4.
[0029] As shown in Figure 3 , the U-shaped groove 1-2 is provided with a first groove body 1-2-1 and a second groove body 1-2-2, the inner diameter of the first groove body 1-2-1 is larger than the inner diameter of the second groove body 1-2-2, and the connection between the first groove body 1-2-1 and the second groove body 1-2-2 forms a stepped protrusion.
[0030] As shown in Figures 6-9 , the anti-pull ring 4 is provided with a notch, that is, the shape of the anti-pull ring 4 is an open ring, and the inner circle of the anti-pull ring 4 has a plurality of cutting teeth 4-1 uniformly distributed along the circumference, when subjected to extrusion, the diameter of the anti-pull ring 4 will become smaller due to the external extrusion, resulting in the inner diameter d of the cutting tooth 4-1 becoming smaller, the notch gradually becomes smaller under the action of pressure or even close to zero, and the cutting tooth 4-1 is embedded into the first pipe 5 or the second pipe 6 due to the axial pressure; the inward inclination angle of the cutting tooth 4-1 is 40-50°, and the inner circle of the cutting tooth 4-1 has a sharp edge, as shown in Figure 5 , under pressure, the O-ring 2 deforms due to external pressure, once deformed, the O-ring 2 fills the space formed by the inner surface of the U-shaped groove 1-2 and the outer surface of the first pipe 5 and the separation ring 3, forming a sealing effect on the pipeline; under pressure, the edge of the cutting tooth 4-1 is embedded into the first pipe 5 or the second pipe 6, preventing the first pipe 5 and the second pipe 6 from rotating inside the pipe joint 1; the inner side of the anti-pull ring 4 is provided with an everted tooth 4-2 every few cutting teeth 4-1 in the circumferential direction, the outer edge diameter of the everted tooth 4-2 is the same as the inner diameter of the U-shaped groove 1-2, as shown in Figure 4 , the top end of the everted tooth 4-2 is in contact with the stepped protrusion, so that the everted tooth 4-2 is just clamped in this space, which to some extent plays a positioning role for the anti-pull ring 4, preventing it from moving axially in the U-shaped groove 1-2, further increasing the firmness of the anti-pull ring 4 in the installed pipe, so that the anti-pull ring 4 is not easy to loosen even in the unpressurized state during transportation.
[0031] As shown in Figure 7As shown, the part of the cutting tooth 4-1 close to the pipeline is provided with a circular arc surface 4-1-1; the radius r of the circular arc surface 4-1-1 is the same as the radius of the first pipeline 5, when the anti-pulling ring 4 is subjected to axial pressure, the whole circumferential diameter d is compressed to the outer diameter of the first pipeline 5, so that the circular arc surface 4-1-1 can be completely attached to the outer surface of the first pipeline 5 under the action of external pressure, thereby better embedding into the first pipeline 5 and more effectively improving the pulling resistance and rotation resistance of the anti-pulling ring.
[0032] As shown in the drawings, Figure 8 As shown, V-shaped grooves 4-3 are arranged between adjacent two cutting teeth 4-1; each two cutting teeth 4-1 are separated by V-shaped grooves 4-3, and the V-shaped cutting teeth increase the firmness of the anti-pulling ring structure.
[0033] The bottom end of the anti-pulling ring 4 is provided with a plurality of groups of small sawtooth-shaped protrusions 4-4, and the plurality of groups of small sawtooth-shaped protrusions 4-4 are uniformly distributed in the circumferential direction, which is to increase the friction between the anti-pulling ring 4 and the inner wall of the U-shaped groove 1-2 and better prevent the anti-pulling ring 4 from rotating in the U-shaped groove 1-2.
[0034] The installation process of the utility model is as follows:
[0035] Firstly, the O-ring 2, the separation ring 3 and the anti-pulling ring 4 are sequentially loaded in the U-shaped groove 1-2; then, the first pipeline 5 is inserted into one end of the pipeline connecting joint 1, and the second pipeline 6 is inserted into the other end of the pipeline connecting joint 1, so that the first pipeline 5 and the second pipeline 6 are respectively abutted against the two ends of the middle section 1-1, thereby completing the connection of the first pipeline 5, the pipeline connecting joint 1 and the second pipeline 6.
[0036] The above-described embodiments only describe the preferred modes of the utility model, and do not limit the scope of the utility model, and various deformations and improvements of the technical solutions of the utility model made by those skilled in the art without departing from the design spirit of the utility model shall fall within the protection scope determined by the claims of the utility model.
Claims
1. A pipe connection device, characterized in that: The system includes a pipe connector (1), on which a first pipe (5) and a second pipe (6) are respectively provided on the left and right sides. A middle section (1-1) is provided in the middle of the pipe connector (1). U-shaped grooves (1-2) are provided at both ends of the pipe connector (1). An O-ring (2), a separation ring (3) and an anti-pull ring (4) are arranged in sequence inside the U-shaped groove (1-2). The O-ring (2) is located on the side close to the middle section (1-1).
2. The pipe connection device according to claim 1, characterized in that: The inner diameter of the intermediate section (1-1) is smaller than the inner diameter of the pipe connection joint (1), and the inner diameter of the U-shaped groove (1-2) is larger than the inner diameter of the pipe connection joint (1).
3. The pipe connection device according to claim 1, characterized in that: The U-shaped groove (1-2) is provided with a first groove (1-2-1) and a second groove (1-2-2). The inner diameter of the first groove (1-2-1) is larger than the inner diameter of the second groove (1-2-2). A stepped protrusion is formed at the connection between the first groove (1-2-1) and the second groove (1-2-2).
4. The pipe connection device according to claim 3, characterized in that: The pull-out ring (4) has a notch, and the inner side of the pull-out ring (4) has a number of cutting teeth (4-1) evenly distributed along the circumference. Every few cutting teeth (4-1) along the circumference, the inner side of the pull-out ring (4) has an outward-turning tooth (4-2).
5. The pipe connection device according to claim 4, characterized in that: The cutting teeth (4-1) are inclined inward at an angle of 40 to 50°.
6. The pipe connection device according to claim 4, characterized in that: The outer edge diameter of the outward-turned tooth (4-2) is the same as the inner diameter of the U-shaped groove (1-2), and the top of the outward-turned tooth (4-2) fits against the stepped protrusion.
7. The pipe connection device according to claim 4, characterized in that: The portion of the cutting tooth (4-1) near the pipeline is provided with an arc surface (4-1-1).
8. The pipe connection device according to claim 4, characterized in that: A V-groove (4-3) is provided between two adjacent cutting teeth (4-1).
9. The pipe connection device according to claim 4, characterized in that: The bottom end of the pull-out ring (4) is provided with several sets of small serrated protrusions (4-4) evenly arranged along the circumference.