Quick connecting structure for sealing and connecting corrugated pipes

Abstract

The utility model relates to a quick connection structure for sealing and connecting corrugated pipes, and belongs to the technical field of pipe fitting connection. Comprising a main connector and an auxiliary connector, one end of the auxiliary connector is sleeved with the main connector, a sealing protrusion is arranged on the auxiliary connector, a sealing groove is formed in the main connector, internal threads are arranged in the auxiliary connector, a locking nut is arranged on the auxiliary connector, the locking nut is connected with the auxiliary connector through the threads, and a notch is formed in the auxiliary connector; a base is arranged on the main connector, a locking block is arranged on the main connector, and the base is in close fit with the main connector. According to the quick connection structure for sealing and connecting the corrugated pipes, the sealing performance is greatly improved through the close fit of the sealing protrusions and the sealing grooves and the arrangement of the sealing rings, radial contraction and locking can be achieved by rotating the locking nut once, the installation steps are simplified, time is saved, mechanical interlocking is formed, and the sealing performance is improved. And the connection strength and stability are enhanced. The design of the sliding groove assembly of the base reduces the installation difficulty, and the convenience is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of for sealing connection corrugated pipe quick coupling structure, belong to pipe fitting connection technical field. BACKGROUND

[0002] Corrugated pipe is a kind of tubular elastic element formed by foldable corrugated sheet along the telescopic direction, widely used in industrial pipeline system, especially in the occasion needing flexible connection, shock absorption compensation or sealed transmission. In the field of pipe connection technology, corrugated pipe is often matched with pipe joint by threaded connection, flange connection or clamp connection, and the stability and sealing performance of its connection directly affect the operation reliability of pipeline system.

[0003] Traditional threaded connection mode requires very high machining precision of corrugated pipe and joint, if there is matching error between the gap of corrugated pipe outer wall corrugation and the inner thread of joint, it is easy to cause connection loosening or sealing failure; secondly, the existing quick coupling structure mostly uses single sealing ring or interference fit to realize sealing, which is easy to produce gap leakage under long-term vibration or pressure fluctuation working condition; furthermore, part of quick coupling device needs multi-step operation (such as centering first and then locking), which is low in installation efficiency, and lacks effective radial locking mechanism, so that mechanical interlocking between corrugated pipe and joint cannot be formed, and there is the risk of axial slip. SUMMARY

[0004] The utility model provides a kind of for sealing connection corrugated pipe quick coupling structure, to solve the problem of low installation efficiency in prior art, lack effective radial locking mechanism.

[0005] The utility model provides a kind of for sealing connection corrugated pipe quick coupling structure, which comprises main joint, auxiliary joint, the auxiliary joint one end is sleeved in the inside of main joint, the auxiliary joint is equipped with sealing protrusion, the main joint is equipped with the sealing groove corresponding with sealing protrusion in, the auxiliary joint is equipped with the inner thread corresponding with corrugated pipe in, the auxiliary joint is equipped with locking nut, the locking nut is connected between auxiliary joint by thread, the auxiliary joint is equipped with the notch corresponding with locking nut;

[0006] The main joint is equipped with base, the main joint is equipped with locking block, base is along locking block and is tightly matched between main joint.

[0007] Preferably, the outer wall of the auxiliary joint is provided with an outer thread corresponding to the locking nut, and the notch is located at the end of the auxiliary joint away from the main joint.

[0008] Preferably, the notch is a plurality of circumferentially distributed on the auxiliary joint.

[0009] Preferably, the base is located at the end of the main joint away from the auxiliary joint, the end of the main joint close to the base is trumpet-shaped, and the outer contour of the base corresponds to the inner wall of the main joint.

[0010] Preferably, the base is connected with the locking block through a sliding groove assembly arranged on the outer contour of the base.

[0011] Preferably, the sliding groove assembly comprises a first sliding groove and a second sliding groove, the first sliding groove is located at the end of the base close to the main joint, the second sliding groove is located at the end of the first sliding groove away from the main joint and is inclined, and the first sliding groove and the second sliding groove are mutually penetrated.

[0012] The utility model discloses beneficial effects:

[0013] The utility model provides a kind of quick connection structure for sealing connection corrugated pipe, which is matched with the sealing groove in the main joint by the sealing protrusion on the auxiliary joint. Under the action of locking nut, the sealing protrusion is in close contact with the bottom of the sealing groove, effectively preventing fluid or gas leakage, greatly improving the sealing performance. At the same time, the main joint close to the base is also provided with a sealing ring, which further enhances the overall sealing effect. By rotating the locking nut, the radial contraction locking of the auxiliary joint to the corrugated pipe can be realized. The auxiliary joint is provided with a plurality of circumferentially distributed notches. When the locking nut is tightened and moved, the auxiliary joint is extruded. The inner thread in the inner wall of the auxiliary joint is embedded in the corrugated gap of the outer wall of the corrugated pipe, realizing close cooperation with the corrugated pipe. Without complex installation tools and multiple operations, the locking can be completed by single rotation, greatly saving the installation time. The inner thread of the auxiliary joint is embedded in the corrugated gap of the outer wall of the corrugated pipe, forming a mechanical interlocking structure, which not only enhances the connection strength between the auxiliary joint and the corrugated pipe, but also effectively prevents the corrugated pipe from loosening or falling off during use, improving the stability and reliability of the connection. When installing the base, the first sliding groove is aligned with the locking block, and the base can slide along the locking block into the main joint through the sliding groove assembly. No accurate alignment or complex operation is required, reducing the installation difficulty. The end of the joint and the base is trumpet-shaped, which makes the main joint and the base tightly cooperate. Due to the inclined design of the second sliding groove, the base rotates along the locking block during sliding, realizing circumferential rotation while sliding, which facilitates the cooperation between the base and the main joint, forming a conical elastic composite sealing structure, further improving the stability and reliability of the sealing. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the whole structure schematic view of the utility model discloses a kind of quick connection structure for sealing connection corrugated pipe.

[0015] Figure 2The utility model discloses a sectional view structure schematic diagram for quick -witted structure of sealed connection corrugated pipe.

[0016] Figure 3 The utility model discloses an explosion structure schematic diagram for quick -witted structure of sealed connection corrugated pipe.

[0017] Figure 4 The utility model discloses another angle explosion structure schematic diagram for quick -witted structure of sealed connection corrugated pipe.

[0018] Figure 5 The utility model discloses a main joint structure schematic diagram for quick -witted structure of sealed connection corrugated pipe.

[0019] In the drawing: 1, main joint, 11, sealing groove, 12, locking block, 13, sealing ring, 2, sub joint, 21, sealing protrusion, 22, notch, 3, locking nut, 4, base, 41, sliding groove assembly, 411, first sliding groove, 412, second sliding groove. DETAILED DESCRIPTION

[0020] The preferred embodiments of the utility model will be described in detail below with reference to the drawings.

[0021] The utility model provides a kind of quick -witted structure for sealed connection corrugated pipe, it includes main joint 1, sub joint 2, sub joint 2 one end is sleeved in the inside of main joint 1, coaxial between sub joint 2 and main joint 1, sealing protrusion 21 is equipped on sub joint 2, main joint 1 is equipped with the sealing groove 11 corresponding with sealing protrusion 21, the inner thread corresponding with corrugated pipe 01 is equipped on the inner wall of sub joint 2, locking nut 3 is equipped on sub joint 2, sub joint 2 is sleeved on locking nut 3 away from main joint 1 one end, the outer thread corresponding with locking nut 3 is equipped on the outer wall of sub joint 2, sub joint 2 is equipped with multiple circumferential distribution notches 22 away from main joint 1 one end;

[0022] The end away from sub joint 2 of main joint 1 is equipped with base 4, base 4 can be straight pipe or elbow, one end of base 4 is sleeved in the end away from sub joint 2 of main joint 1, the end close to base 4 of main joint 1 is designed into flared mouth gradually expands, the inner wall of main joint 1 is equipped with multiple circumferential distribution locking block 12, locking block 12 is fixedly connected between the inner wall of main joint 1, the sliding groove assembly 41 corresponding with locking block 12 is equipped on the outer wall of base 4, and the sliding groove assembly 41 includes first sliding groove 411, second sliding groove 412, first sliding groove 411 is located on the outer wall of base 4 close to main joint 1 one end, and second sliding groove 412 is located on the end away from main joint 1 of first sliding groove 411 and is inclined upward towards the end away from main joint 1 of base 4, the end close to base 4 of main joint 1 is equipped with sealing ring 13 corresponding with base 4, and sealing ring 13 is located on the inner wall of main joint 1, and the end away from main joint 1 of base 4 is designed into flared mouth corresponding with main joint 1.

[0023] In use, the end of the sub-adapter 2 is sleeved in the main adapter 1, the sealing protrusion 21 is located in the sealing groove 11, the locking nut 3 is located in the sub-adapter 2, and the corrugated pipe to be connected is inserted into the end of the sub-adapter 2 away from the main adapter 1. At this time, there is a gap between the sealing protrusion 21 and the sealing groove 11, the sub-adapter 2 can move towards the end of the main adapter 1, the locking nut 3 is rotated to move the locking nut 3 towards the end of the main adapter 1, the end of the locking nut 3 contacts the main adapter 1 to press the main adapter 1 towards the base 4, the main adapter 1 moves towards the base 4, the sealing protrusion 21 contacts the bottom of the sealing groove 11 to tightly fit, the locking nut 3 extrudes the end of the sub-adapter 2 away from the main adapter 1 during the rotation and movement, the sub-adapter 2 is provided with a notch 22, the sub-adapter 2 is extruded inward by the locking nut 3, the internal thread in the inner wall of the sub-adapter 2 is embedded in the corrugated gap of the outer wall of the corrugated pipe to realize tight fitting with the corrugated pipe 01, radial contraction locking is realized by single rotation, the sub-adapter 2 is elastically deformed, the internal thread is embedded in the corrugated groove of the corrugated pipe to form mechanical interlocking, installation time is saved, the base 4 is sleeved on the other end of the main adapter 1, the first sliding groove 411 is aligned with the locking block 12, the base 4 is slid along the locking block 12 into the main adapter 1 through the sliding groove assembly 41, the main adapter 1 and the base 4 are both designed as a horn shape to tightly fit between the inner wall of the main adapter 1 and the base 4, the sealing ring 13 seals the gap between the main adapter 1 and the base 4, the second sliding groove 412 is designed as an inclination, the base 4 rotates along the locking block 12 during sliding to realize circumferential rotation while sliding, thereby facilitating the cooperation between the base 4 and the main adapter 1 to achieve complete sealing and quick plug-in, forming a conical elastic composite seal.

[0024] Compared with the prior art, the sealing protrusion 21 on the secondary connector 2 cooperates with the sealing groove 11 in the primary connector 1. During initial installation, there is a gap between the sealing protrusion 21 and the sealing groove 11, and the secondary connector 2 can move towards one end of the primary connector 1. When the locking nut 3 is rotated, the locking nut 3 moves towards one end of the primary connector 1, pushing the secondary connector 2 so that the sealing protrusion 21 is in close contact with the bottom of the sealing groove 11, effectively preventing fluid or gas leakage and greatly improving the sealing performance. The primary connector 1 is provided with a sealing ring 13 near one end of the base 4, which is located on the inner wall of the primary connector 1. When the base 4 is sleeved on the other end of the primary connector 1 and slides along the sliding groove assembly 41, the sealing ring 13 seals the gap between the primary connector 1 and the base 4, further enhancing the overall sealing effect and forming a reliable sealing structure to effectively prevent medium leakage. By rotating the locking nut 3, the secondary connector 2 can be radially contracted and locked to the corrugated pipe 01. The secondary connector 2 is provided with multiple circumferentially distributed notches 22. When the locking nut 3 is tightened and moved, the end of the secondary connector 2 away from the primary connector 1 is extruded. The secondary connector 2 elastically deforms inward due to the design of the notches 22, and the internal threads in the inner wall are embedded in the corrugated gap of the outer wall of the corrugated pipe, achieving close cooperation with the corrugated pipe 01. Without the need for complex installation tools and multiple operations, the locking can be completed by a single rotation, greatly saving installation time and improving installation efficiency. The internal threads of the secondary connector 2 are embedded in the corrugated gap of the outer wall of the corrugated pipe 01, forming a mechanical interlocking structure that not only enhances the connection strength between the secondary connector 2 and the corrugated pipe 01 but also effectively prevents the corrugated pipe 01 from loosening or falling off during use, improving the stability and reliability of the connection. The base 4 is provided with a sliding groove assembly 41 on the outer wall, which corresponds to the locking block 12 on the inner wall of the primary connector 1, including a first sliding groove 411 and a second sliding groove 412. During installation of the base 4, the first sliding groove 411 is aligned with the locking block 12, and the base 4 can slide along the locking block 12 into the primary connector 1 through the sliding groove assembly 41, without the need for precise alignment and complex operations, reducing the installation difficulty and improving the convenience of installation. The primary connector 1 and the base 4 are both designed in a flared shape, allowing the primary connector 1 to fit tightly with the inner wall of the base 4. At the same time, the second sliding groove 412 is designed to be inclined, so that during the sliding process of the base 4 along the sliding groove assembly 41, the base 4 will rotate along the locking block 12, achieving circumferential rotation while sliding, thereby facilitating the cooperation between the base 4 and the primary connector 1. The conical elastic composite sealing structure further improves the stability and reliability of the seal, ensuring that the connection part maintains good sealing performance under various working conditions.

[0025] The above has described the utility model and its implementation mode, which is not restrictive, and the drawings only show one of the implementation modes of the utility model, and the actual structure is not limited thereto. In summary, if a person skilled in the art is inspired thereby, without departing from the creative purpose of the utility model, similar structural modes and embodiments are designed without creativity, which should belong to the protection scope of the utility model.

Claims

1. A quick coupling structure for sealingly connecting corrugated pipes, comprising a main coupling (1) and a sub-coupling (2), characterized in that: The auxiliary connector (2) is sleeved at one end of the main connector (1), the auxiliary connector (2) is provided with a sealing protrusion (21), the main connector (1) is provided with a sealing groove (11) corresponding to the sealing protrusion (21), the auxiliary connector (2) is provided with an internal thread corresponding to the corrugated pipe (01), the auxiliary connector (2) is provided with a locking nut (3), the locking nut (3) and the auxiliary connector (2) are connected through threads, and the auxiliary connector (2) is provided with a notch (22) corresponding to the locking nut (3). The main connector (1) is provided with a base (4), and the main connector (1) is provided with a locking block (12), and the base (4) is slid along the locking block (12) and tightly matched with the main connector (1).

2. A quick coupling structure for sealingly connecting corrugated pipes according to claim 1, characterized in that: The outer wall of the auxiliary connector (2) is provided with an external thread corresponding to the locking nut (3), and the notch (22) is located at the end of the auxiliary connector (2) away from the main connector (1).

3. A quick coupling structure for sealingly connecting corrugated pipes according to claim 1, characterized in that: The notch (22) is a plurality of circumferentially distributed notches on the auxiliary connector (2).

4. A quick coupling structure for sealingly connecting corrugated pipes according to claim 1, characterized in that: The base (4) is located at the end of the main connector (1) away from the auxiliary connector (2), the end of the main connector (1) close to the base (4) is trumpet-shaped, and the outer contour of the base (4) corresponds to the inner wall of the main connector (1).

5. A quick coupling structure for sealingly connecting corrugated pipes according to claim 1, characterized in that: The base (4) is slidably connected between the locking block (12) through the sliding groove assembly (41) located on the outer contour of the base (4).

6. A quick coupling structure for sealingly connecting corrugated pipes according to claim 5, characterized in that: The sliding groove assembly (41) comprises a first sliding groove (411) and a second sliding groove (412), the first sliding groove (411) is located at the end of the base (4) close to the main connector (1), the second sliding groove (412) is located at the end of the first sliding groove (411) away from the main connector (1) and is inclined, and the first sliding groove (411) and the second sliding groove (412) are mutually penetrated.

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