Copper connector for sealing connection

Abstract

The utility model relates to the technical field of air-blowing micro-pipes and micro-cables, and discloses a copper joint for sealing connection, which comprises a main joint, a threaded pipe, a connecting pipe, an air pipe and a connecting micro-pipe, a first sealing ring is arranged outside the connecting micro-pipe, and a second sealing ring corresponding to the first sealing ring is arranged inside a connecting hole, so that the double-sealing effect is realized, and the service life of the connecting micro-pipe is prolonged. Through the design that the clamping blocks outside the connecting micro pipes are clamped with the clamping grooves in the connecting pipes, additional mechanical locking force is provided for the connecting positions, connection looseness caused by air pressure changes is effectively avoided, and therefore the structural stability of the whole connector is enhanced, and the service life of the connector is prolonged. And through the elastic design of the sealing film, uniform distribution of gas pressure in the joint is ensured, so that looseness or damage of the joint caused by local high pressure is prevented, and the integrity and safety of the joint are further protected.

Description

Technical Field

[0001] The utility model relates to the technical field of air-blown microduct and microcable, and particularly relates to a copper joint for sealed connection. Background Technique

[0002] In the air-blown microduct and microcable technology, a copper joint usually refers to an electrical connection component used to connect a copper cable and the inside of a microduct or between microcables. These copper joints are used in air-blown microduct systems, which is a method for laying and recovering multi-core optical fibers or copper cables. The air-blown microduct technology uses high-pressure gas to push the cable through small pipes buried in roads or buildings. This method can reduce interference with existing infrastructure while improving laying efficiency and flexibility.

[0003] Copper joints are usually installed at the connection points of air-blown microduct systems. These positions can be the intersections of microducts or places where the line needs to be switched. However, due to the need to transmit gas in existing copper joints, when the air pressure is relatively high, the connection may become loose, and at this time, the gas may leak from the gap. Therefore, it does not meet the existing requirements, and for this reason, we propose a copper joint for sealed connection. Content of the Utility Model

[0004] The utility model provides a copper joint for sealed connection, which has the beneficial effect of effectively preventing gas leakage under high pressure, and solves the problem that in the above-mentioned background technique, due to the need to transmit gas in existing copper joints, when the air pressure is relatively high, the connection may become loose, and at this time, the gas may leak from the gap.

[0005] The utility model provides the following technical scheme: A copper joint for sealed connection includes a main joint, a threaded pipe, a connecting pipe, an air pipe, and a connecting microduct. The threaded pipe is fixedly installed at one end of the main joint, the connecting pipe is installed at the other end of the main joint, the air pipe is fixedly inserted at the bottom of the main joint. An internal thread ring for external thread connection is arranged in the threaded pipe. A connection hole is opened in the connecting pipe. The connecting microduct is inserted into the connection hole. A clamping block is installed outside the connecting microduct. A clamping groove corresponding to the clamping block is opened in the connecting pipe. The clamping block is engaged with the clamping groove. A first sealing ring is fixedly sleeved outside the connecting microduct.

[0006] As an optional scheme of the copper joint for sealed connection described in the utility model, wherein: The first sealing ring is located in front of the clamping block. A second sealing ring corresponding to the first sealing ring is arranged in the connection hole. Both the first sealing ring and the second sealing ring are arranged as rubber rings, and the first sealing ring and the second sealing ring are in interference fit.

[0007] As an alternative solution for the copper joint used for sealed connection in the present utility model, wherein: a sealing film is arranged outside the internal thread ring, and the sealing film is set as an elastic rubber film.

[0008] As an alternative solution for the copper joint used for sealed connection in the present utility model, wherein: a limiting plate for positioning the micro-cable is installed inside the main joint, a limiting hole is opened in the limiting plate, a damping ring is arranged in the limiting hole, and the damping ring is set as a rubber ring.

[0009] As an alternative solution for the copper joint used for sealed connection in the present utility model, wherein: the clamping block is set as a triangular block, a recovery groove corresponding to the clamping block is opened outside the connecting micro-tube, and a torsion spring is arranged in the recovery groove.

[0010] As an alternative solution for the copper joint used for sealed connection in the present utility model, wherein: a control groove is opened in the connecting pipe, the control groove is communicated with the clamping groove, a control rod for controlling the clamping block is movably inserted in the control groove, a control block is fixedly installed at the end of the control rod, and the control block is located outside the connecting pipe.

[0011] As an alternative solution for the copper joint used for sealed connection in the present utility model, wherein: an auxiliary groove is opened in the control groove, the auxiliary groove is communicated with the control groove, a spring is arranged in the auxiliary groove, one end of the spring is fixedly connected to the outside of the control rod, and the other end of the spring is fixedly connected to the inner wall of the auxiliary groove.

[0012] As an alternative solution for the copper joint used for sealed connection in the present utility model, wherein: an anti-corrosion coating is sprayed on the outside of the connecting pipe and the main joint, and the anti-corrosion coating is set as a polyurethane coating.

[0013] The present utility model has the following beneficial effects:

[0014] 1. For the copper joint used for sealed connection, by arranging a first sealing ring outside the connecting micro-tube and arranging a corresponding second sealing ring inside the connecting hole, a double-sealing effect is achieved, effectively preventing gas leakage under high pressure. Through the engagement design of the clamping block outside the connecting micro-tube and the clamping groove inside the connecting pipe, an additional mechanical locking force is provided for the connection part, effectively avoiding connection loosening caused by air pressure changes, thereby enhancing the structural stability of the entire joint. Through the elastic design of the sealing film, the uniform distribution of gas pressure inside the joint is ensured, thereby preventing loosening or damage at the connection part caused by local high pressure, and further protecting the integrity and safety of the joint.

[0015] 2. The copper joint for sealed connection can drive the control rod to push the clamping block back into the recovery groove by pressing the control block, enabling the user to easily remove the damaged connecting microtube. This greatly simplifies the disassembly operation and reduces the complexity of manual operation. When a new connecting microtube is inserted, the triangular design of the clamping block causes it to automatically retract when it comes into contact with the inner wall of the connecting hole during insertion and quickly resume and engage with the card slot after insertion, thus improving the convenience and efficiency of replacement. The setting of the torsion spring ensures that the clamping block can quickly return to its original position and accurately engage with the card slot after the connecting microtube is replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic perspective view of the main body of the present utility model.

[0017] Figure 2 It is a schematic cross-sectional view of the main body of the present utility model.

[0018] Figure 3 For the present utility model Figure 2 The enlarged schematic view of part A in.

[0019] Figure 4 It is a schematic side view of the main body of the present utility model.

[0020] In the figure: 110, main joint; 111, threaded tube; 112, connecting tube; 113, air tube; 114, connecting microtube; 115, internal thread ring; 116, connecting hole; 117, clamping block; 118, card slot; 119, first sealing ring; 120, second sealing ring; 121, sealing film; 122, limiting plate; 123, limiting hole; 124, damping ring; 130, recovery groove; 131, torsion spring; 132, control groove; 133, control rod; 134, control block; 135, auxiliary groove; 136, spring; 137, anti-corrosion coating. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Embodiment 1. The purpose of this embodiment is to facilitate the solution of the problem that in the existing copper joint, when transmitting gas, the connection may become loose when the air pressure is relatively high, and at this time, the gas may leak from the gap. Please refer to Figures 1-4, A copper joint for sealed connection, comprising a main joint 110, a threaded tube 111, a connecting tube 112, an air tube 113 and a connecting microtube 114. The threaded tube 111 is fixedly installed at one end of the main joint 110, the connecting tube 112 is installed at the other end of the main joint 110, the air tube 113 is fixedly inserted at the bottom of the main joint 110. An internal thread ring 115 for external thread connection is provided inside the threaded tube 111. A connection hole 116 is formed inside the connecting tube 112, the connecting microtube 114 is inserted into the connection hole 116, a clamping block 117 is installed outside the connecting microtube 114, a clamping groove 118 corresponding to the clamping block 117 is formed inside the connecting tube 112, the clamping block 117 is engaged with the clamping groove 118, and a first sealing ring 119 is fixedly sleeved outside the connecting microtube 114.

[0023] Fix the threaded tube 111 at one end of the main joint 110 to ensure a tight threaded connection and avoid any looseness. The internal thread ring 115 inside the threaded tube 111 should ensure a perfect fit with the externally threaded device. Install the connecting tube 112 at the other end of the main joint 110, ensuring that the interface of the connecting tube 112 is in a horizontal position for subsequent connection of the connecting microtube 114. The connection hole 116 inside the connecting tube 112 fits tightly with the external connecting microtube 114.

[0024] Fix the air tube 113 by inserting it into the bottom of the main joint 110 so that gas can be transported through the air tube 113 to the connection point to facilitate the advancement of the microcable. Insert the connecting microtube 114 into the connection hole 116 and ensure that the external clamping block 117 of the connecting microtube 114 is engaged with the clamping groove 118 inside the connecting tube 112 to achieve a stable connection. The engagement design of the clamping block 117 and the clamping groove 118 can effectively prevent loosening caused by air pressure changes.

[0025] Set the first sealing ring 119 on the front side outside the connecting microtube 114 to ensure a preliminary sealing effect under the action of gas pressure. The second sealing ring 120 inside the connection hole 116 corresponds to the first sealing ring 119, and the two are in interference fit to further enhance the sealing performance. This design can effectively prevent gas from leaking from the connection point.

[0026] Install a limit plate 122 inside the main joint 110. The limit hole 123 of the limit plate 122 is designed to accurately position the microcable and prevent it from being unstable during the gas pushing process. Place the damping ring 124 into the limit hole 123. The rubber material of the damping ring 124 can absorb and slow down the impact force during the pushing process of the microcable, further protecting the sealing performance and stability of the connection point.

[0027] Start the gas delivery system, deliver gas into the microtube through the gas pipe 113, and push the cable inside the connecting microtube 114. At this time, the elastic design of the sealing film 121 ensures the uniform distribution of gas pressure and avoids loosening at the connection due to high pressure. Regularly check the sealing performance of the connection to ensure that the first sealing ring 119 and the second sealing ring 120 are in good condition. If it is found that the sealing rings are aged or damaged, they should be replaced in time. The engagement state of the clamping block 117 and the clamping groove 118 ensures that the connection remains stable when the gas pressure changes.

[0028] In this embodiment: By setting the first sealing ring 119 outside the connecting microtube 114 and setting the corresponding second sealing ring 120 inside the connecting hole 116, a double-sealing effect is achieved, effectively preventing gas leakage under high pressure. Through the engagement design of the clamping block 117 outside the connecting microtube 114 and the clamping groove 118 inside the connecting pipe 112, an additional mechanical locking force is provided for the connection, effectively avoiding connection loosening caused by air pressure changes, thereby enhancing the structural stability of the entire joint. Through the elastic design of the sealing film 121, the uniform distribution of gas pressure inside the joint is ensured, thereby preventing loosening or damage at the connection due to local high pressure, and further protecting the integrity and safety of the joint.

[0029] Embodiment 2. This embodiment aims to facilitate the solution of the disassembly problem when the connecting microtube 114 needs to be replaced. This embodiment is an improvement based on Embodiment 1. Specifically, please refer to Figures 1-4 , an anti-corrosion coating 137 is sprayed on the connecting pipe 112 and the main joint 110, and the anti-corrosion coating 137 is set as a polyurethane coating. The polyurethane anti-corrosion coating 137 sprayed on the connecting pipe and the main joint 110 provides additional anti-corrosion protection and enhances the durability and service life of the equipment in a harsh environment.

[0030] When the connecting microtube 114 needs to be replaced. Press the control block 134 to drive the control rod 133 to push the clamping block 117 back into the retraction groove. At this time, just pull the connecting microtube 114 to disassemble the original damaged connecting microtube 114, and then insert the new connecting microtube 114 into the connecting hole 116 of the connecting pipe 112. Since the clamping block 117 is set as a triangular block, as the connecting microtube 114 is inserted, the clamping block 117 will be retracted into the retraction groove due to the contact with the inner wall of the connecting hole 116. Then insert the connecting microtube 114 again, and the clamping block 117 moves to the clamping groove 118. Since a torsion spring 131 is provided in the retraction groove, the clamping block 117 will be driven by the torsion spring 131 to engage with the clamping groove 118, thus completing the replacement of the connecting microtube 114. At the same time, due to the setting of the spring 136 and the ability of the spring 136 to automatically recover, when the control block 134 is pressed, the control block 134 can be quickly reset.

[0031] In this embodiment: By pressing the control block 134, the control rod 133 is driven to push the clamping block 117 back into the recovery groove 130, enabling the user to easily disassemble the damaged connecting microtube 114, thus greatly simplifying the disassembly operation and reducing the complexity of manual operation. When the new connecting microtube 114 is inserted, the triangular design of the clamping block 117 causes it to automatically retract when in contact with the inner wall of the connecting hole 116 during insertion, and quickly resume and engage with the card slot 118 after insertion, thereby improving the convenience and efficiency of replacement. The setting of the torsion spring 131 ensures that the clamping block 117 can quickly return to its original position and accurately engage with the card slot 118 after the replacement of the connecting microtube 114.

[0032] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0033] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A copper joint for sealed connection, comprising a main joint (110), a threaded pipe (111), a connecting pipe (112), an air pipe (113) and a connecting micro pipe (114), characterized in that: The threaded tube (111) is fixedly mounted on one end of the main joint (110), the connecting tube (112) is mounted on the other end of the main joint (110), the air pipe (113) is fixedly plugged into the bottom of the main joint (110), an internal threaded ring (115) for external threaded connection is provided in the threaded tube (111), a connecting hole (116) is provided in the connecting tube (112), the connecting micro tube (114) is plugged into the connecting hole (116), a clamping block (117) is installed outside the connecting micro tube (114), a clamping groove (118) corresponding to the clamping block (117) is provided in the connecting tube (112), the clamping block (117) is engaged with the clamping groove (118), and a first sealing ring (119) is fixedly sleeved outside the connecting micro tube (114).

2. A copper joint for sealed connection according to claim 1, characterized in that: The first sealing ring (119) is located at the front side of the clamping block (117), and a second sealing ring (120) corresponding to the first sealing ring (119) is arranged in the connecting hole (116); the first sealing ring (119) and the second sealing ring (120) are both configured as rubber rings, and the first sealing ring (119) and the second sealing ring (120) are interference fit.

3. A copper joint for sealed connection according to claim 1, characterized in that: A sealing film (121) is arranged outside the internal thread ring (115), and the sealing film (121) is arranged as an elastic rubber film.

4. A copper joint for sealed connection according to claim 1, characterized in that: A limiting plate (122) for positioning the micro cable is installed in the main joint (110), a limiting hole (123) is provided in the limiting plate (122), a damping ring (124) is provided in the limiting hole (123), and the damping ring (124) is configured as a rubber ring.

5. The copper joint for sealed connection according to claim 1, characterized in that: The clamping block (117) is configured as a triangular block, a recovery groove (130) corresponding to the clamping block (117) is provided outside the connecting microtube (114), and a torsion spring (131) is provided inside the recovery groove (130).

6. The copper joint for sealed connection according to claim 1, characterized in that: A control groove (132) is provided in the connecting tube (112), the control groove (132) being in communication with the clamping groove (118), a control rod (133) for controlling the clamping block (117) being movably inserted in the control groove (132), a control block (134) being fixedly mounted on the end of the control rod (133), the control block (134) being located outside the connecting tube (112).

7. A copper joint for sealed connection according to claim 6, characterized in that: An auxiliary groove (135) is provided in the control groove (132), the auxiliary groove (135) being in communication with the control groove (132), a spring (136) being provided in the auxiliary groove (135), one end of the spring (136) being fixedly connected to the outside of the control rod (133), and the other end of the spring (136) being fixedly connected to the inner wall of the auxiliary groove (135).

8. The copper joint for sealed connection according to claim 1, characterized in that: The connecting pipe (112) and the main joint (110) are sprayed with an anti-corrosion coating (137) on the outside, and the anti-corrosion coating (137) is configured as a polyurethane coating.

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