Anti-leakage connecting assembly

Abstract

The utility model relates to the technical field of pipe fitting connecting structures, in particular to an anti-leakage connecting assembly. Comprising a connector and a hoop, the connector is sleeved with the hoop, one axial end of the hoop and one axial end of the connector are connected to form a closed state, and the other axial end of the hoop and the other axial end of the connector are separated from each other; the inner wall of the hoop is at least provided with a convex part, when the connecting assembly is connected with the corrugated pipe, the convex part abuts against a concave part of the outer wall of the corrugated pipe, and a cavity is defined by the pipe wall of the corrugated pipe and the convex part, the hoop and the connector or the pipe wall of the corrugated pipe and the two adjacent convex parts. The hoop is provided with a glue injection channel, and the glue injection channel is communicated with the cavity. The connecting assembly is firm in connection and reliable in sealing and seepage prevention, installation does not depend on large hydraulic equipment, one person can operate the connecting assembly on site, and the installation flexibility is higher.

Description

Technical Field

[0001] The present application relates to the technical field of pipe connection structures, and in particular to an anti-leakage connection assembly. Background Art

[0002] A corrugated pipe is a pipe with an annular outer wall and a smooth inner wall. Plastic reinforced pipe is a type of corrugated pipe and is widely used in lake water absorption, agricultural liquid fertilizer transportation, marine bilge discharge, engineering construction drainage, septic tank and wastewater treatment.

[0003] As a medium transport pipeline, the sealing of the connection between pipes is particularly important. However, due to the raised ribs on the outer wall of corrugated pipes or plastic-reinforced pipes, it is difficult to form a stable bite between the joint and the pipe fitting, making the sealing connection more difficult. Currently, the most common connection method for corrugated pipes or plastic-reinforced pipes is to connect the pipes with a joint and then clamp an aluminum ring on the outside of the joint to secure the joint. The aluminum ring is clamped using hydraulic equipment, and the high pressure creates a sealing effect and prevents it from being pulled out.

[0004] However, existing bellows or plastic-reinforced pipe connection methods rely on the pressure of an aluminum ring to prevent pullout and leakage. This requires large hydraulic equipment, which is costly and inconvenient to operate. Furthermore, the pressure applied to the aluminum ring is often difficult to control. Excessive pressure can lead to pullout and leakage, while excessive pressure can damage the pipe ribs and shorten the pipe's service life. Therefore, the applicant believes that further research and improvement of bellows or plastic-reinforced pipe joints is necessary. Utility Model Content

[0005] In order to improve the current problems of poor convenience in use of corrugated pipe or plastic reinforced pipe connection structure and the risk of pull-out, leakage or damage to the pipe, the purpose of this application is to provide a leakage-proof connection assembly, which is particularly suitable for the sealed connection of corrugated pipe or plastic reinforced pipe, and has the advantages of easy installation, no direct pressure on the pipe body, not easy to pull out, and high sealing safety.

[0006] In order to achieve the purpose of this application, this application provides an anti-leakage connection assembly, which adopts the following technical solutions:

[0007] A leakage-proof connection assembly comprises: a joint and a clamp, the clamp being sleeved on the outside of the joint, the clamp and the joint being connected to each other at one axial end to form a closed state, and the other ends being separated from each other; the inner wall of the clamp has at least one convex portion, and when the connection assembly is connected to a bellows, the convex portion abuts against the concave portion of the outer wall of the bellows, and a cavity is formed between the wall of the bellows and the convex portion, the clamp and the joint, or between the wall of the bellows and two adjacent convex portions, and a glue injection channel is opened on the clamp, and the glue injection channel is connected to the cavity.

[0008] When the above-mentioned anti-leakage connection assembly is assembled with the bellows, the end of the joint and the clamp that is separated from each other is inserted into the bellows, and then the convex part of the clamp is aligned with the concave part of the outer wall of the bellows and pressed outside the bellows, and after the clamp and the joint are engaged and connected with each other, the bolts on the clamp are tightened to close the clamp, and finally structural glue is injected into the cavity from the glue injection channel, and the bellows sealant is installed in this connection assembly to form an inner circumferential wall of the bellows abutting against the outer circumferential wall of the joint, and the concave part of the outer circumferential wall of the bellows abutting against the convex part of the clamp, and the end face of the bellows forms a closed end-abutting installation state with the clamp and the joint.

[0009] In this installed state, on the one hand, the convex part of the clamp and the concave part of the bellows are locked with each other, which limits the axial movement of the bellows, improves the axial connection stability between the connection assembly and the bellows, and makes the bellows not easy to be pulled out after assembly; on the other hand, after the clamp is closed, the convex part and the glue solidified in the cavity exert radial pressure on the bellows, which improves the radial connection stability between the connection assembly and the bellows, that is, strengthens the anti-pull-out effect, and the pressure applied by the clamp has a certain sealing and anti-leakage effect on the bellows. This technical solution, through the structural design of the connection assembly and combined with the glue injection technology, can achieve the effect of anti-pull-out and anti-leakage without applying too much radial pressure to the bellows. The risk of compression damage to the bellows by the connection assembly is very small, and the assembly does not require the use of large hydraulic equipment, which is convenient and fast.

[0010] Another important point is that after the glue is injected between the connecting component and the outer wall of the corrugated pipe, an integrated elastic buffer structure is formed between the clamp and the pipe body, which can effectively improve the connection failure problem caused by the shrinkage of the pipe body and the connecting component, and also has a certain buffering and protective effect on the outer wall of the corrugated pipe.

[0011] Implementations may include any or all of the following features.

[0012] Furthermore, one of the protrusions is provided at the top end of the end where the clamp and the joint are separated from each other.

[0013] Through this further technical solution, the clamp provides the maximum area for glue sealing with the bellows, thereby improving the connection stability and sealing performance of the connecting component to the bellows.

[0014] Furthermore, the cross-sectional area of the convex portion gradually decreases in the direction toward the joint, and the glue injection channel is located in the middle of the top of the cavity.

[0015] Through this further technical solution, the radial cross-section of the cavity is a trapezoid with a gradually decreasing top. When glue is injected into the cavity through the glue injection channel in the middle position of the top of the cavity, the glue can more easily fill the cavity completely without gaps or bubbles, and it is less likely to affect the glue injection sealing effect.

[0016] Furthermore, the end of the clamp used to be connected to the joint is provided with at least two first locking heads, and a first locking opening is provided at a position adjacent to the first locking head, the first locking opening is recessed inwardly along the thickness direction of the clamp, and the first locking head is provided along the thickness direction of the clamp; a second locking opening is provided at a position corresponding to the first locking head on the outer surface of the joint, the second locking opening is recessed inwardly along the thickness direction of the joint, and a second locking head is provided at a position adjacent to the first locking opening, and the second locking head is provided along the thickness direction of the joint; when the clamp and the joint form the closure, the first locking head is embedded in the second locking opening, and the second locking head is embedded in the first locking opening.

[0017] This further technical solution enables the clamp and connector to form a mutually locked connection, which is simpler and easier to implement than a hydraulic fastening method, and provides sufficient connection stability. Furthermore, due to the circuitous connection path between the first and second locking heads, the reliability of the connection between the clamp and connector can be further improved after glue injection.

[0018] Furthermore, a first lock is provided at the top end of the clamp; and a second lock is provided at the top end of the connector facing the cavity.

[0019] The design of the first locking head position can maximize the fixation of the end of the clamp used to connect to the connector, improving the stability of the connection between the clamp and the connector. The design of the second locking head position helps to reduce the risk of glue leakage in the cavity.

[0020] Furthermore, a groove is provided on the outer wall of the joint, the groove is continuous along the circumference of the joint, and a gasket is embedded in the groove.

[0021] Furthermore, the washer is interference fit with the groove.

[0022] Furthermore, a plurality of teeth are evenly distributed on the outer peripheral wall of the joint.

[0023] Through the above-mentioned further technical solution, the connection sealing between the joint and the inner wall of the bellows is improved.

[0024] Furthermore, the cavities are continuous along the circumference of the clamp, and each cavity has one glue injection channel. This further technical solution can maximize the glue injection volume between the connecting component and the corrugated pipe and facilitate glue injection.

[0025] Furthermore, the outer surface of the clamp is provided with at least one boss; the outer surface of the end of the joint connected to the clamp is provided with a plurality of steps.

[0026] In this further technical solution, the boss on the outer surface of the clamp serves to increase the anti-slip effect of the outer wall of the connecting component. The step on the outer surface of the joint is used to facilitate the connection of the joint to other components.

[0027] In summary, the present application provides an anti-leakage connection assembly, which has the following beneficial effects:

[0028] First, the technical solution of this application combines glue filling technology with the connecting component, which can effectively prevent the bellows from being pulled out and leaking without applying too much radial pressure to the bellows. The risk of the connecting component causing damage to the bellows by compression is very small, and the assembly does not require the aid of large hydraulic equipment, making it convenient and quick.

[0029] Second, the technical solution of the present application has a mutually interlocking locking structure between the convex part of the clamp and the concave part of the bellows, and another mutually interlocking locking structure is formed between the clamp and the joint through the first locking head and the second locking head. Through this double locking structural design, the connection stability between the connection component itself and the bellows is greatly improved, and the risk of pulling out between the connection components and between the connection component and the bellows is significantly reduced.

[0030] Third, after the glue is injected between the connecting component and the outer wall of the corrugated pipe in the technical solution of the present application, an integrated elastic buffer structure is formed between the clamp and the pipe body. Compared with the existing aluminum ring buckle connection method, it can effectively prevent the connection failure problem caused by the shrinkage of the pipe body and the connecting component, and also play a buffering and protective role for the corrugated pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic cross-sectional structural diagram of the connection state of the connection component and the bellows of the present application.

[0032] Figure 2 Schematic diagram of the disassembled state of the connection components of the present application, wherein the dotted line shows the assembly line.

[0033] Figure 3 It is a schematic diagram of the partial cross-section structure of the clamp in the connection assembly of the present application.

[0034] Figure 4 It is a schematic diagram of the partial cross-section structure of the joint in the connection assembly of this application.

[0035] Description of reference numerals:

[0036] 1. Connect components;

[0037] 11. Clamp; 111. Protrusion; 112. Boss; 113. First lock; 114. First lock opening;

[0038] 12. Connector; 121. First ring body; 1211. Left side wall; 1212. Step; 122. Second ring body; 1221. Groove; 1222. Threaded joint; 123. Second locking head; 124. Second locking joint;

[0039] 13. Cavity;

[0040] 14. Connection terminal;

[0041] 15. Separation end;

[0042] 16. Glue injection channel;

[0043] 17. Washer;

[0044] 2. Bellows;

[0045] 3. Other components. DETAILED DESCRIPTION

[0046] In order to make the purpose and technical solutions of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front, back, bottom, top, etc., are only reference to the directions of the attached drawings. Therefore, the directional terms used are for illustration, not for limitation of this application.

[0047] The present application embodiment discloses an anti-leakage connection assembly, hereinafter referred to as connection assembly 1. Figure 1 , including a joint 12 and a clamp 11, the clamp 11 is sleeved on the outside of the joint 12, and one axial end of the clamp 11 and the joint 12 are connected to each other to form a closed state, which is defined as the connecting end 14, and the other axial ends are separated from each other, which is defined as the separating end 15. The bellows 2 connected to the connection assembly 1 passes through the separating end 15 of the clamp 11 and the joint 12. As a preferred embodiment, the separation distance between the clamp 11 and the separating end 15 of the joint 12 should be equal to or slightly less than the wall thickness of the concave part of the bellows 2 to enhance the sealing effect after connection.

[0048] Reference Figure 1 and Figure 2Specifically, the clamp 11 is annular, and the inner wall of the clamp 11 has at least one protrusion 111, which extends continuously along the circumference of the clamp 11. As a preferred embodiment, the inner wall of the clamp 11 has three protrusions 111, one of which is connected to the top of the end 15 separating the clamp 11 from the connector 12. The protrusion 111 is integrally connected to the clamp 11 and is used to extend into the concave portion of the corrugated tube 2 to form an interlocking pattern with the concave and convex wall of the corrugated tube 2.

[0049] Reference Figure 1 More preferably, the protrusion 111 extends inwardly toward the central axis of the clamp 11 by a certain height, set with the concave portion of the connected corrugated pipe 2 as the reference line. The height of the protrusion 111 of the clamp 11 is greater than the height of the protrusion of the corrugated pipe 2, so that after installation, a certain space is left between the inner wall of the clamp 11 and the protrusion 111 of the corrugated pipe 2, so that a cavity 13 is formed between two adjacent protrusions 111 and the inner wall of the clamp 11 and the outer wall of the corrugated pipe 2. The cavity 13 located at the connection end 14 of the clamp 11 and the joint 12 is formed by the protrusion 111 near the connection end 14 of the clamp 11 and the joint 12, the inner wall of the clamp 11, the outer wall of the corrugated pipe 2, and the outer side wall of the joint 12. A glue injection channel 16 is provided on the clamp 11, and the glue injection channel 16 is connected to the cavity 13. Structural glue is injected into the cavity 13 through the glue injection channel 16 to glue and seal the corrugated pipe 2 assembled with the connection component 1 in the connection component 1. In order to facilitate uniform glue injection, the cavity 13 extends continuously along the circumference of the clamp 11 , and each cavity 13 has a glue injection channel 16 , which is connected to the middle position of the top of the cavity 13 .

[0050] Reference Figure 1 More preferably, the cross-sectional area of the protrusion 111 gradually decreases in the direction toward the joint 12. In other words, the radial cross-section of the protrusion 111 is a trapezoid with a smaller distal end and a larger proximal end. The distal end of the protrusion 111 refers to the end of the protrusion 111 protruding outward, and the proximal end refers to the end of the protrusion 111 connected to the clamp 11. In this way, the opening of the cavity 13 formed gradually decreases outward, making it easier to completely fill the cavity 13 with glue during glue injection.

[0051] Reference Figure 3 The outer wall of the clamp 11 is integrally formed with at least one boss 112. As a preferred embodiment, the outer wall of the clamp 11 and the two ends of the axial direction are each provided with a boss 112, and the boss 112 can facilitate the gripping of the connecting component 1.

[0052] Further, refer to Figure 3At least two first locking heads 113 are provided at one end of the clamp 11 for connecting to the joint 12, and a first locking opening 114 is provided adjacent to the first locking head 113. The first locking opening 114 is recessed inwardly along the thickness direction of the clamp 11, and the first locking head 113 is provided along the thickness direction of the clamp 11. A first locking head 113 is provided at the top end of the clamp 11 for connecting to the joint 12, that is, an outer side wall of a first locking head 113 is in the same plane as the outer side wall of the clamp 11 at the connection end 14.

[0053] Reference Figure 4 The joint 12 is annular and includes a first ring body 121 and a second ring body 122. The first ring body 121 and the second ring body 122 are coaxially and integrally connected along the axial direction of the joint 12. The connecting end 14 of the above-mentioned clamp 11 and the joint 12 is set on the first ring body 121, and the separation end 15 of the clamp 11 and the joint 12 is located in the second ring body 122. The outer diameter of the first ring body 121 is greater than the outer diameter of the second ring body 122, so that the left side wall 1211 of the first ring body 121 can be enclosed to form a cavity 13.

[0054] Reference Figure 4 The outer surface of the joint 12 is provided with a second locking opening 124 at a position corresponding to the first locking head 113, and the second locking opening 124 is recessed inwardly along the thickness direction of the joint 12, and a second locking head 123 is provided at a position adjacent to the first locking opening 114, and the second locking head 123 is provided along the thickness direction of the joint 12, and a second locking head 123 is provided at the top end of the first ring body 121 facing the cavity 13, that is, a left side wall of the second locking head 123 is in the same plane as the left side wall 1211 of the first ring body 121, so that the glue is not easy to leak from one side of the joint 12. Of course, even if a small amount of glue enters the connection between the clamp 11 and the joint 12 from the cavity 13, the resistance to glue outflow will be increased due to the connection method of the clamp 11 and the joint 12 and the radial pressure of the clamp 11, and no obvious glue leakage will occur, and a small amount of overflowed glue will solidify at the connection between the clamp 11 and the joint 12, which will make the connection between the clamp 11 and the joint 12 more firm. When the clamp 11 and the connector 12 form the described closure, the first lock head 113 is embedded in the second lock opening 124, and the second lock head 123 is embedded in the first lock opening 114, forming a connection structure in which the clamp 11 and the connector 12 are locked to each other, which can effectively prevent the clamp 11 and the connector 12 from being pulled out.

[0055] Reference Figure 4 In order to further improve the sealing performance of the connection assembly 1 and the bellows 2, the outer wall of the second ring body 122 is provided with at least one groove 1221, which extends continuously along the circumference of the joint 12, and a gasket 17 is embedded in the groove 1221 ( Figure 1(shown in the figure), the washer 17 forms an interference fit with the groove 1221. The outer circumferential wall of the second ring body 122 is evenly distributed with a number of serrated teeth 1222, which increase friction between the outer circumferential wall of the connector 12 and the inner circumferential wall of the bellows 2, thereby improving connection stability. The outer circumferential wall of the first ring body 121 is also distributed with a number of downward steps 1212, extending away from the cavity 13. These steps 1212 serve as interfaces to facilitate connection of the connection assembly 1 with other components 3.

[0056] There is no special restriction on the material of the connection component disclosed in the present application. It can be a conventional metal material or a conventional polymer material. However, it should be limited that when the connection component 1 uses a metal material, the glue used should be a conventional structural glue that can effectively bond the metal material used. When the connection component 1 uses a polymer material, the glue used should be a conventional structural glue that can effectively bond the polymer material used.

[0057] When the anti-leakage connection assembly 1 of the embodiment of the present application is connected, refer to Figure 1 , take a bellows 2 with a convex end and a diameter that matches the connection component 1, and insert the second ring body 122 of the connector 12 into the bellows 2, so that the inner circumferential wall of the bellows 2 abuts against the outer circumferential wall of the second ring body 122 and the gasket 17, and the left side wall 1211 of the first ring body 121 abuts against the end face of the bellows 2. Then align the convex part 111 of the clamp 11 with the concave part of the bellows 2, and embed and lock the first locking head 113 of the clamp 11 and the second locking opening 124 of the connector 12, and the first locking opening 114 of the clamp 11 and the second locking head 123 of the connector 12, and press and buckle the clamp 11. Insert the glue injection needle into the glue injection channel 16 and slowly inject structural glue into the cavity 13 until glue overflows from the glue injection channel 16. Stop glue injection and wait for the structural glue to solidify before normal use. The connection assembly of the present application is not only firmly connected and reliably sealed and anti-seepage, but also does not rely on large hydraulic equipment for installation. It can be operated on-site by a single person, and has higher installation flexibility.

[0058] The above embodiments are, of course, the best embodiments of this application and are intended only to illustrate the technical concepts and features of this application. Their purpose is to enable those familiar with the art to understand the content of this application and implement it accordingly. They are not intended to limit the scope of protection of this application. Any modifications made in accordance with the spirit of the main technical solution of this application shall be included within the scope of protection of this application.

Claims

1. A leakage-proof connection assembly, characterized in that: include: The joint and the clamp are sleeved on the outside of the joint, the clamp and the joint are connected to each other at one axial end to form a closed connection, and the other end is separated from each other; The inner wall of the clamp has at least one convex portion. When the anti-leakage connection assembly is connected to the bellows, the convex portion abuts against the concave portion of the outer wall of the bellows. A cavity is formed between the tube wall of the bellows and the convex portion, the clamp and the joint, or between the tube wall of the bellows and two adjacent convex portions. A glue injection channel is opened on the clamp, and the glue injection channel is connected to the cavity.

2. The anti-leakage connection assembly according to claim 1, characterized in that: One of the protrusions is arranged at the top end of the end where the hoop and the joint are separated from each other.

3. The anti-leakage connection assembly according to claim 2, characterized in that: The cross-sectional area of the convex portion gradually decreases in a direction toward the joint, and the glue injection channel is located in the middle of the top of the cavity.

4. The anti-leakage connection assembly according to claim 3, characterized in that: The end of the clamp used for connecting to the connector is provided with at least two first locking heads, and a first locking opening is provided adjacent to the first locking heads. The first locking opening is recessed inwardly along the thickness direction of the clamp, and the first locking head is provided along the thickness direction of the clamp; A second locking opening is provided on the outer surface of the connector at a position corresponding to the first locking head, the second locking opening is recessed inwardly along the thickness direction of the connector, and a second locking head is provided at a position adjacent to the first locking opening, the second locking head is provided along the thickness direction of the connector; When the clamp and the joint form the closure, the first locking head is embedded in the second locking opening, and the second locking head is embedded in the first locking opening.

5. The anti-leakage connection assembly according to claim 4, characterized in that: A first locking head is arranged at the top end of the clamp; and a second locking head is arranged at the top end of the connector facing the cavity.

6. The anti-leakage connection assembly according to claim 5, characterized in that: A groove is provided on the outer wall of the joint, the groove is continuous along the circumference of the joint, and a gasket is embedded in the groove.

7. The anti-leakage connection assembly according to claim 6, characterized in that: The washer is interference fit with the groove.

8. The anti-leakage connection assembly according to claim 7, characterized in that: A plurality of teeth are evenly distributed on the outer peripheral wall of the joint.

9. The anti-leakage connection assembly according to claim 8, characterized in that: The cavities are continuous along the circumference of the clamp, and each cavity has one glue injection channel.

10. The anti-leakage connection assembly according to claim 1, characterized in that: The outer surface of the clamp is provided with at least one boss; the outer surface of the end of the joint connected to the clamp is provided with a plurality of steps.

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