Pipeline quick connection structure of mechanical clamping lock

Abstract

A pipeline quick connection structure of a mechanical clamping lock is characterized by comprising a first pipe opening connector and a second pipe opening connector. The interlocking rings are connected with the injection joint of the pipe fitting; the first inner tenon and the second inner tenon are symmetrically arranged, and a secondary tenon lock cavity is formed between the first inner tenon and the second inner tenon; multiple stages of non-return ratchets are formed on the two sides of the second tenon ring, and the first inner tenon and the second inner tenon provide inner tooth groove surfaces for matching of the multiple stages of non-return ratchets; the first pipe opening connector is fastened to the second pipe connector to form a whole by means of meshing and interlocking of the inner tooth groove face and the multi-stage non-return ratchets. The core pain point that the cable is likely to be dragged off in ultra-long distance and complex geological dragging is solved; and the traditional scheme depends on the elasticity of materials (rubber rings and plastics), so that the risks of creep deformation and stress relaxation exist. Mechanical one-way interlocking, sealing interlocking and material injection interlocking are integrated, safety and reliability are achieved, attenuation along with time is avoided, performance is more durable, and stability is better.

Description

[Technical Field]

[0001] This invention relates to a quick-connect pipe structure with a mechanical locking mechanism. [Background Technology]

[0002] With the continuous development and improvement of my country's national strength and economic construction, my country's infrastructure manufacturing products and construction technology are gradually reaching the world's top level. However, in municipal engineering, pipeline connection is a common task. During pipe jacking construction, the urban construction space is not conducive to the operation of existing pipelines. Using traditional hot-melt composite pipes or threaded connection pipes is complicated and time-consuming. In ultra-long distances and complex geological conditions, there is a risk of creep and stress relaxation, and there have been cases of joints being pulled off. Broken pipes are difficult to remove, affecting the construction progress. To overcome the above defects, we have developed a mechanical locking quick-connect pipe structure. [Summary of the Invention]

[0003] The technical problem this invention aims to solve is to provide a mechanically locking quick-connect pipe structure. The male nylon end is directly pressed into the female end, allowing the nylon internal threads and steel external threads to interlock, achieving mechanical self-locking. The heat-fused locking sleeve provides a tensile strength comparable to that of the PE first and second pipes, overcoming the problem of easy expansion of pure plastic sockets. The separately injection-molded first and second tenon rings have internal first tenon portions with barbed teeth that perfectly match the locking sleeve, connecting to the first tenon portion. This design offers low manufacturing cost, good overall corrosion resistance, and safe insulation. It truly achieves "one-plug-in" connection, with extremely high installation efficiency, quick and convenient installation, and robust reliability.

[0004] To achieve the above objectives, the present invention provides a quick-connect pipe structure with mechanical locking, comprising:

[0005] The first tube and the second tube; their oral cavities are fitted with locking sleeves to form an integrated unit;

[0006] The locking sleeve provides a check-back groove cavity for the tenon ring to interlock; the tenon ring includes a first tenon ring connecting the first tube and a second tenon ring connecting the second tube. The first tenon ring includes a first tail tenon inserted into the check-back groove cavity of the first tube, a shoulder connecting the first tail tenon, and an outer ring wall and an inner ring wall extending from both ends of the shoulder away from the first tail tenon. The outer ring wall, the inner ring wall and the shoulder form a tenon cavity.

[0007] The second tenon ring includes a second tail tenon that is inserted into the second tube check groove cavity, and a first tenon and a second tenon that are inserted into the tenon cavity to form a check interlock.

[0008] During connection, the first tenon is inserted into the first tube check groove, the second tenon is inserted into the second tube check groove, and the first and second tenons are inserted into the mortise cavity so that the first tube and the second tube are combined into a whole.

[0009] In one or more embodiments of the present invention, a ratchet is formed on the outer side of the first tenon and the second tenon; a ratchet groove is formed on the inner side of the outer ring wall and the inner ring wall at the position corresponding to the ratchet.

[0010] In one or more embodiments of the present invention, the second tenon ring includes an intermediate tenon disposed between the first tenon and the second tenon; the intermediate tenon has anti-return ratchet segments formed on both sides.

[0011] In one or more embodiments of the present invention, the tenon cavity is provided with a ratchet groove that engages with the anti-return ratchet section.

[0012] In one or more embodiments of the present invention, the ratchet groove is located within the mortise cavity and between the inner ring walls of the first inner tenon and the second inner tenon, which extend downward from the shoulder.

[0013] In one or more embodiments of the present invention, the outer ring wall of the first inner tenon and the outer ring wall form a sharp-angle cavity, the first tenon is provided with a sharp-angle guide portion that matches the sharp-angle cavity, and the first tenon and the second tenon are symmetrically arranged.

[0014] In one or more embodiments of the present invention, the locking sleeve is made of stainless steel.

[0015] In one or more embodiments of the present invention, the first tenon ring and the second tenon ring are made of glass fiber reinforced nylon material.

[0016] The advantages of this invention compared to the prior art are:

[0017] Because this invention employs the above-described solution, the male nylon part is directly pressed into the female end, allowing the inner threads of the nylon material and the outer threads of the steel to interlock, achieving mechanical self-locking. The hot-melt embedded locking sleeve provides a tensile strength comparable to that of the first and second PE pipes, solving the problem of easy expansion of pure plastic sockets. The separately injection-molded first and second tenon rings have a first tail tenon with barbed teeth that perfectly match the locking sleeve, and a connecting first tail tenon. It has low manufacturing costs, good overall corrosion resistance, and safe insulation. It truly achieves "one-plug-in-one connection," with extremely high installation efficiency, quick and convenient insertion and use, and strong reliability. [Attached Image Description]

[0018] Figure 1 This is a schematic diagram of the quick-connect pipe structure of the mechanical locking mechanism in one embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the unfolded structure of the quick-connect pipe fitting structure of the mechanical locking device in one embodiment of the present invention;

[0020] Figure 3 This is a partially cross-sectional view of the quick-connect pipe structure of the mechanical locking device in one embodiment of the present invention from another perspective.

[0021] Figure 4 for Figure 2 Enlarged view of point A in the middle.

Detailed Implementation Methods

[0022] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

[0023] The embodiments described below with reference to the accompanying drawings are exemplary and intended to illustrate the invention, but should not be construed as limiting the invention.

[0024] Reference Figure 1-4 The first embodiment shown is a quick-connect pipe structure with mechanical locking, characterized by comprising:

[0025] First tube 1 and second tube 2; their tube openings 11 are fitted with locking sleeves 3 to form an integrated unit;

[0026] The locking sleeve 3 provides a check-back groove 31 for interlocking with the tenon ring 4; the tenon ring 4 includes a first tenon ring 41 connecting the first pipe 1 and a second tenon ring 42 connecting the second pipe 2. The first tenon ring 41 includes a first tenon 411 inserted into the check-back groove 311 of the first pipe, a shoulder 412 connecting the first tenon 411, and an outer ring wall 413 and an inner ring wall 414 extending from both ends of the shoulder 412 away from the first tenon. The outer ring wall 413, the inner ring wall 414 and the shoulder 412 form a tenon cavity 415; the second tenon ring 42 includes a second tenon 421 inserted into the check-back groove 312 of the second pipe, and a first tenon 422 and a second tenon 423 inserted into the tenon cavity 415 to form a check-back interlock.

[0027] The outer sides of the first tenon 422 and the second tenon 423 form a ratchet 424; the inner sides of the outer ring wall 413 and the inner ring wall 414 form ratchet grooves at the positions corresponding to the ratchet 424.

[0028] The second tenon ring 42 includes an intermediate tenon 424 disposed between the first tenon 422 and the second tenon 423; the intermediate tenon 424 has anti-return ratchet segments on both sides.

[0029] The mortise cavity 415 is provided with a ratchet groove 416 that matches the anti-return ratchet section.

[0030] The ratchet groove 416 is located within the tenon cavity and between the inner ring walls 418 of the first inner tenon 417 and the second inner tenon 417, which extend downward from the shoulder. The outer ring wall of the first inner tenon 417 and the outer ring wall 413 form a pointed cavity. The first tenon 422 is provided with a pointed corner guide portion 4221 that matches the pointed cavity. The first tenon 422 and the second tenon 423 are symmetrically arranged.

[0031] The locking sleeve 3 is made of stainless steel. The locking sleeve 3 has reverse teeth, is designed to be more robust and sturdy, and the locking surface angle is as vertical as possible (e.g., 85°-90°) as the main load-bearing structure.

[0032] The first and second tenon rings are made of glass fiber reinforced nylon material, such as PA66-GF30. This significantly improves strength, stiffness, and creep resistance, ensuring long-term locking force for the pipe fittings.

[0033] During use, when connecting, the first tenon 411 is inserted into the first tube check tooth groove 311, the second tenon 421 is inserted into the second tube check tooth groove 312, and the first tenon 422 and the second tenon 423 are inserted into the tenon cavity 415, so that the first tube 1 and the second tube 2 are combined into a whole. The male nylon part is directly inserted into the female end, so that the internal threads of the nylon material and the external threads of the steel interlock, achieving mechanical self-locking. The hot-melt embedded locking sleeve provides a tensile strength foundation close to that of the PE first and second tubes, achieving a strength comparable to that of the body, solving the problem of easy expansion of pure plastic sockets. The separately injection-molded first and second tenon rings have a first tenon with barbed teeth that perfectly match the locking sleeve, and a connecting first tenon. The manufacturing cost is low, the overall corrosion resistance is good, and the insulation is safe. It truly achieves "one-plug-in connection", with extremely high installation efficiency, quick and convenient insertion and use, and strong and reliable.

[0034] Although the invention has been described with reference to preferred embodiments, variations, substitutions, and equivalents fall within the scope of the invention. It should also be noted that many alternative ways of implementing the invention exist; therefore, the appended claims are intended to be interpreted as including all such variations, substitutions, and equivalents that fall within the true spirit and scope of the invention. Through the above description of the structure and principles, those skilled in the art should understand that the invention is not limited to the specific embodiments described above, and improvements and substitutions based on the invention using techniques known in the art all fall within the protection scope of the invention and should be defined by the claims.

Claims

1. A quick-connect pipe structure with mechanical locking, characterized in that, include: The first tube and the second tube; their oral cavities are fitted with locking sleeves to form an integrated unit; The locking sleeve provides a check-back groove cavity for the tenon ring to interlock; the tenon ring includes a first tenon ring connecting the first tube and a second tenon ring connecting the second tube. The first tenon ring includes a first tail tenon inserted into the check-back groove cavity of the first tube, a shoulder connecting the first tail tenon, and an outer ring wall and an inner ring wall extending from both ends of the shoulder away from the first tail tenon. The outer ring wall, the inner ring wall and the shoulder form a tenon cavity. The second tenon ring includes a second tail tenon that is inserted into the second tube check groove cavity, and a first tenon and a second tenon that are inserted into the tenon cavity to form a check interlock. During connection, the first tenon is inserted into the first tube check groove cavity, the second tenon is inserted into the second tube check groove cavity, and the first tenon and the second tenon are inserted into the mortise cavity so that the first tube and the second tube are combined into a whole.

2. The quick-connect pipe structure with mechanical locking as described in claim 1, characterized in that: The outer sides of the first and second tenons form anti-return ratchet teeth; the inner sides of the outer and inner ring walls form ratchet grooves at positions corresponding to the anti-return ratchet teeth.

3. The quick-connect pipe structure with mechanical locking as described in claim 2, characterized in that, The second tenon ring includes an intermediate tenon disposed between the first tenon and the second tenon; the intermediate tenon has ratchet sections formed on both sides.

4. The quick-connect pipe structure with mechanical locking as described in claim 3, characterized in that, The mortise cavity is provided with a ratchet groove that fits the anti-return ratchet section.

5. The quick-connect pipe structure with mechanical locking as described in claim 4, characterized in that, The ratchet tenon is located within the mortise cavity and between the inner ring walls of the first and second inner tenons, which extend downward from the shoulder.

6. The quick-connect pipe structure with mechanical locking as described in claim 5, characterized in that, The outer ring wall of the first inner tenon forms a sharp-angle cavity with the outer ring wall. The first tenon is provided with a sharp-angle guide portion that matches the sharp-angle cavity. The first tenon and the second tenon are symmetrically arranged.

7. The quick-connect pipe structure with mechanical locking as described in claim 6, characterized in that, The locking sleeve is made of stainless steel.

8. The quick-connect pipe structure with mechanical locking as described in claim 7, characterized in that, The first and second tenon rings are made of glass fiber reinforced nylon material.

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