Polypropylene HFB corrugated pipe with locking connector structure

Abstract

The invention relates to the technical field of pipe fittings, in particular to a polypropylene HFB corrugated pipe with a locking connector structure, which comprises two polypropylene HFB corrugated pipe bodies, the two polypropylene HFB corrugated pipe bodies are spliced end to end, the splicing position of the two polypropylene HFB corrugated pipe bodies is sleeved with a pipe connecting sleeve, a reserved groove is formed in the outer ring surface of the pipe connecting sleeve, and the locking connector structure is arranged in the reserved groove. Two groups of locking joints are inserted into the preformed groove; the polypropylene HFB corrugated pipe has the beneficial effects that connection is achieved through matching of the pipe connecting sleeve and the locking connector, the pipe connecting sleeve and the polypropylene HFB corrugated pipe body are tightly combined together, the gap between the locking connector and the positioning groove is filled with the rubber band, the locking connector is further prevented from swinging at will, the connection stability is effectively enhanced, and large external force can be borne; risks of connection loosening and falling caused by external force or environmental factors are reduced, and safe and stable operation of a pipeline system is guaranteed.

Description

Technical Field

[0001] The invention relates to the field of pipe fittings, in particular to a polypropylene HFB corrugated pipe with a locking joint structure. Background Art

[0002] In various pipeline projects, polypropylene (HFB) corrugated pipes are widely used in drainage, sewage disposal, and communication cable protection due to their unique corrugated structure, excellent flexibility, pressure resistance, and corrosion resistance. However, in practical applications, achieving a reliable connection between two polypropylene (HFB) corrugated pipe bodies has always been a key issue that needs to be solved.

[0003] Traditional bellows connection methods often have many disadvantages. For example, some connection methods lack connection strength. Under the influence of external forces (such as soil pressure, vehicle rolling, etc.) or environmental factors (such as temperature changes, humidity, etc.) for a long time, they are prone to loosening and falling off, causing pipeline leakage, affecting the normal operation of the pipeline system, and even causing safety accidents. Other connection methods have acceptable connection strength, but poor sealing performance and cannot effectively prevent the leakage of liquids, gases or impurities. This not only causes waste of resources and environmental pollution, but may also cause damage to the surrounding environment and facilities. In addition, some connection structures are complex, and the installation and disassembly process is cumbersome. Professionals need to use a large number of tools and a long time to complete, which increases construction costs and time costs and reduces construction efficiency.

[0004] To address these issues, developing a polypropylene HFB bellows connection structure that offers reliable connection, excellent sealing performance, and convenient installation and disassembly is of great practical significance. Consequently, the polypropylene HFB bellows with a locking joint structure was developed. Summary of the Invention

[0005] The object of the present invention is to provide a polypropylene HFB corrugated pipe with a locking joint structure to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solution: a polypropylene HFB corrugated pipe with a locking joint structure, comprising two polypropylene HFB corrugated pipe bodies, the two polypropylene HFB corrugated pipe bodies being spliced end to end, a pipe joint sleeve being sleeved at the splicing point of the two polypropylene HFB corrugated pipe bodies, a reserved groove being provided on the outer ring surface of the pipe joint sleeve, two sets of locking joints being inserted into the interior of the reserved groove, one end of the locking joint being inserted into the outer wall of the polypropylene HFB corrugated pipe body, a push ring being sleeved and threaded into the interior of the reserved groove, and the push ring shielding the locking joint.

[0007] Preferably, sealing rings are fixed at both ends of the inner ring opening of the pipe joint sleeve, and the sealing rings are clamped between the pipe joint sleeve and the polypropylene HFB corrugated pipe body.

[0008] Preferably, the reserved groove is an annular groove, and two groups of through-openings are provided on the surface of the reserved groove, each group of through-openings is provided with a plurality of through-openings, and the through-openings and the locking joints correspond one to one, and the end of the locking joint extending toward the reserved groove is provided with a slope.

[0009] Preferably, an inner ring groove is provided on the inner ring surface of the pipe joint, and the inner ring groove is an annular groove. A rubber band is fixed between two parallel side walls of the inner ring groove, and the rubber band is in a circular ring structure. The other end of the locking joint is fixed to the outer ring surface of the rubber band. The height of the locking joint is greater than the depth of the through-hole. Two groups of positioning grooves are provided on the outer wall of the polypropylene HFB corrugated pipe body. The positioning grooves and the locking joints correspond one to one. The push ring pushes the locking joint to tension the rubber band and then inserts it into the positioning groove.

[0010] Preferably, the inner ring surface of the push ring is provided with an internal thread, and the surface of the reserved groove is provided with an external thread, and the external thread and the internal thread are matched and connected.

[0011] Preferably, a card slot 1 is provided at one end of the side wall of the push ring facing the reserved groove, and the card slot 1 is a circular ring groove with a circular cross-section. An introduction ring is fixed on both side walls of the reserved groove, and a rubber ring is fixed on one end of the introduction ring. The rubber ring is a circular ring structure with a circular cross-section, and the rubber ring matches the card slot 1.

[0012] Preferably, the outer ring surface of the push ring is provided with a pick-out groove, and a plurality of pick-out grooves are provided, and the plurality of pick-out grooves are arranged and distributed at equal distances and sizes along the outer ring surface of the push ring.

[0013] Preferably, a rubber cover is fixed to one end of the pipe sleeve, and a rubber ring is fixed to one end of the rubber cover. The rubber ring is inserted into the second card slot, and the second card slot is opened at the other end of the pipe sleeve. The second card slot is a circular groove with a circular cross-section, and the rubber ring is a circle with a circular cross-section.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The polypropylene HFB corrugated pipe with a locking joint structure proposed in the present invention is connected by the cooperation of a pipe joint sleeve and a locking joint. During installation, the pipe joint sleeve is placed at the joint of the two polypropylene HFB corrugated pipe bodies. By pushing the push ring along the reserved groove, the push ring pushes the locking joint along the slope of one end of the locking joint, causing the locking joint tensioning rubber band to deform and insert into the positioning groove on the outer wall of the polypropylene HFB corrugated pipe body. This connection method tightly combines the pipe joint sleeve with the polypropylene HFB corrugated pipe body. The rubber band fills the gap between the locking joint and the positioning groove, further preventing the locking joint from swinging randomly, effectively enhancing the stability of the connection, and being able to withstand large external forces. It reduces the risk of loosening or falling off of the connection due to external forces or environmental factors, and ensures the safe and stable operation of the pipeline system. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 A top view of the structure of the present invention; Figure 3 for Figure 2 Structural cross-section view at AA in the middle; Figure 4 for Figure 3 A schematic diagram of the structure at center A; Figure 5 This is a schematic diagram of the connection structure between the pipe sleeve and the push ring of the present invention; Figure 6 This is a schematic diagram of the pipe joint structure of the present invention.

[0016] In the figure: polypropylene HFB corrugated pipe body 1, pipe sleeve 2, sealing ring 3, reserved groove 4, through-hole 5, inner ring groove 6, rubber band 7, locking joint 8, slope 9, push ring 10, card slot 1 11, introduction ring 12, rubber ring 13, pick-up groove 14, rubber cover 15, rubber ring 16, card slot 2 17, positioning groove 18. DETAILED DESCRIPTION

[0017] In order to clearly and completely describe the objectives and technical solutions of the present invention and make the advantages more clearly understood, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] See also Figures 1-6 The present invention provides a technical solution: a polypropylene HFB corrugated pipe with a locking joint structure, comprising two polypropylene HFB corrugated pipe bodies 1, the two polypropylene HFB corrugated pipe bodies 1 being spliced end to end, a pipe joint sleeve 2 being sleeved on the spliced portion of the two polypropylene HFB corrugated pipe bodies 1, sealing rings 3 being fixed at both ends of the inner ring opening of the pipe joint sleeve 2, and the sealing ring 3 being clamped between the pipe joint sleeve 2 and the polypropylene HFB corrugated pipe bodies 1. After the pipe joint sleeve 2 is pre-mounted on the end of one of the polypropylene HFB corrugated pipe bodies 1, one end of the other polypropylene HFB corrugated pipe body 1 is inserted into one end of the pipe joint sleeve 2. At this time, the pipe joint sleeve 2 is simultaneously sleeved on the two polypropylene HFB corrugated pipe bodies 1 to prevent the two polypropylene HFB corrugated pipe bodies 1 from being misaligned up and down, and the sealing ring 3 is clamped between the polypropylene HFB corrugated pipe body 1 and the pipe joint sleeve 2 to play a sealing role.

[0019] The outer ring surface of the pipe joint 2 is provided with a reserved groove 4, and two groups of locking joints 8 are inserted into the interior of the reserved groove 4. One end of the locking joint 8 is inserted into the outer wall of the polypropylene HFB corrugated pipe body 1. A push ring 10 is sleeved and screwed inside the reserved groove 4, and the push ring 10 blocks the locking joint 8; the reserved groove 4 is an annular groove, and two groups of through-holes 5 are provided on the surface of the reserved groove 4. Each group of through-holes 5 has a plurality of through-holes, and the through-holes 5 correspond to the locking joint 8 one by one. The end of the locking joint 8 extending to the reserved groove 4 is provided with a slope 9; the inner ring surface of the pipe joint 2 is provided with an inner ring groove 6, and the inner ring groove 6 is an annular groove. A rubber belt 7 is fixed between the two parallel side walls of the inner ring groove 6. The rubber band 7 is a circular ring structure, and the other end of the locking joint 8 is fixed to the outer ring surface of the rubber band 7. The height of the locking joint 8 is greater than the depth of the through-hole 5. The outer wall of the polypropylene HFB corrugated pipe body 1 is provided with two sets of positioning grooves 18, and the positioning grooves 18 correspond to the locking joints 8 one by one. The push ring 10 pushes the locking joint 8 to tension the rubber band 7 and then inserts it into the positioning groove 18; the inner ring surface of the push ring 10 is provided with an internal thread, and the surface of the reserved groove 4 is provided with an external thread, and the external thread and the internal thread are matched and connected; the outer ring surface of the push ring 10 is provided with a pick-up groove 14, and there are multiple pick-up grooves 14, and the multiple pick-up grooves 14 are arranged at equal distances and sizes along the outer ring surface of the push ring 10.

[0020] During use, the finger is picked in the picking groove 14, and the push ring 10 is moved along the reserved groove 4. During this process, the push ring 10 pushes the locking joint 8 along the slope 9, and the locking joint 8 pulls the rubber belt 7 to deform, and one end of the locking joint 8 is inserted into the positioning groove 18. The rubber belt 7 fills the gap between the locking joint 8 and the positioning groove 18 to prevent the locking joint 8 from swinging at will. The locking joint 8 connects the pipe sleeve 2 and the polypropylene HFB corrugated pipe body 1 together; when the pipe sleeve 2 needs to be disassembled, the push ring 10 is dialed back. After the push ring 10 and the locking joint 8 are misaligned, the rubber belt 7 rebounds and pulls the locking joint 8 to reset. At this time, the locking joint 8 is disengaged from the positioning groove 18, thereby canceling the connection between the polypropylene HFB corrugated pipe body 1 and the pipe sleeve 2.

[0021] A snap-in groove 11 is formed on one end of the side wall of the push ring 10 facing the reserved groove 4. The snap-in groove 11 is a circular groove with a rounded cross section. An introduction ring 12 is fixed to both side walls of the reserved groove 4. A rubber ring 13 is sleeved and fixed to one end of the introduction ring 12. The rubber ring 13 is a circular ring structure with a rounded cross section and matches the snap-in groove 11. The rubber ring 13 not only limits the push ring 10 to the end of the reserved groove 4, but also acts as an elastic gasket at the threaded connection between the push ring 10 and the reserved groove 4 by being clamped between the push ring 10 and the reserved groove 4.

[0022] A rubber cover 15 is fixed to one end of the pipe nipple 2, and a rubber ring 16 is fixed to the other end of the rubber cover 15. The rubber ring 16 is inserted into a second retaining groove 17. The second retaining groove 17 is provided at the other end of the pipe nipple 2. The second retaining groove 17 is a circular groove with a rounded cross-section, and the rubber ring 16 is a circle with a rounded cross-section. Before operating the push ring 10, the rubber cover 15 needs to be turned outward. After the pipe nipple 2 is installed, the rubber cover 15 is turned back to cover the pipe nipple 2. At this time, the rubber cover 15 protects the structure inside the reserved groove 4, and the rubber ring 16 is pushed into the second retaining groove 17 to limit the rubber cover 15.

[0023] A table comparing the differences and advantages between a polypropylene HFB bellows with a locking joint structure and existing polypropylene HFB bellows, including data parameters and detailed descriptions:

[0024] The detailed usage of the polypropylene HFB corrugated pipe with locking joint structure is divided into two parts: installation and removal. The specific steps are as follows: 1. Installation steps Pre-sleeved pipe joint: The pipe joint 2 is pre-sleeved on the end of one of the polypropylene HFB corrugated pipe bodies 1.

[0025] Splicing corrugated pipes: Insert one end of another polypropylene HFB corrugated pipe body 1 into one end of the pipe joint sleeve 2, so that the pipe joint sleeve 2 is simultaneously sleeved on the two polypropylene HFB corrugated pipe bodies 1. At this time, the sealing rings 3 at both ends of the inner ring of the pipe joint sleeve 2 are clamped between the pipe joint sleeve 2 and the polypropylene HFB corrugated pipe body 1, playing a sealing role and preventing the two polypropylene HFB corrugated pipe bodies 1 from being misaligned up and down.

[0026] Turn outward the rubber cover: Before operating the push ring 10, turn outward the rubber cover 15 fixed at one end of the pipe sleeve 2.

[0027] Push the push ring: The fingers are picked in the multiple picking grooves 14 arranged at equal distances and sizes on the outer ring surface of the push ring 10, and the push ring 10 is moved along the reserved groove 4. The internal thread of the inner ring surface of the push ring 10 is matched with the external thread on the surface of the reserved groove 4, so that the push ring 10 can move stably.

[0028] During the movement of the push ring 10 , the push ring 10 extends along the locking joint 8 toward the slope 9 provided at one end of the reserved groove 4 to squeeze and push the locking joint 8 .

[0029] When locking connector 8 is pushed, the annular rubber band 7 in the tensioned inner ring groove 6 is deformed, and one end of locking connector 8 is inserted into the positioning groove 18 provided on the outer wall of the polypropylene HFB corrugated tube body 1. At this point, the rubber band 7 fills the gap between locking connector 8 and positioning groove 18, preventing locking connector 8 from swinging freely, thereby connecting the pipe nipple 2 and the polypropylene HFB corrugated tube body 1 together.

[0030] Folding back the rubber cover: After the pipe sleeve 2 is installed, the outward-turned rubber cover 15 is folded back to cover the pipe sleeve 2. At this time, the rubber ring 16 fixed at one end of the rubber cover 15 is pushed into the second card groove 17 (a circular groove with a circular cross-section, and the rubber ring 16 is a circle with a circular cross-section) opened at the other end of the pipe sleeve 2, thereby limiting the rubber cover 15. The rubber cover 15 plays a protective role on the structure inside the reserved groove 4.

[0031] Push ring limit and seal: A snap-in groove 11, which is a circular ring groove with a rounded cross section, is formed on one end of the push ring 10 facing the side wall of the reserved groove 4. An introduction ring 12 is fixed to both side walls of the reserved groove 4. A rubber ring 13 with a circular ring structure with a round cross section is sleeved and fixed to one end of the introduction ring 12. The rubber ring 13 matches the snap-in groove 11. When the push ring 10 is pushed to the end of the reserved groove 4, the rubber ring 13 limits the push ring 10. The rubber ring 13 is clamped between the push ring 10 and the reserved groove 4, acting as an elastic gasket for the threaded connection between the push ring 10 and the reserved groove 4, thereby enhancing the sealing and stability of the connection.

[0032] 2. Disassembly steps Turn outward the rubber cover: first turn outward the rubber cover 15 covering the pipe joint sleeve 2 so that the rubber ring 16 is disengaged from the second card slot 17, thereby releasing the limit on the rubber cover 15 for subsequent operations.

[0033] Pull back the push ring: Put your finger in the picking groove 14 and pull back the push ring 10, so that the push ring 10 moves in the opposite direction along the reserved groove 4, and the push ring 10 and the locking joint 8 are misaligned.

[0034] Locking joint reset: After the push ring 10 is pulled back, the rubber belt 7 rebounds and pulls the locking joint 8 to reset. At this time, the locking joint 8 is disengaged from the positioning groove 18, and the connection between the polypropylene HFB corrugated pipe body 1 and the pipe sleeve 2 is cancelled.

[0035] Separate the pipe socket and the corrugated pipe: Remove the pipe socket 2 from the joint of the two polypropylene HFB corrugated pipe bodies 1 to complete the disassembly.

[0036] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A polypropylene HFB bellows with a locking joint structure, comprising two polypropylene HFB bellows bodies (1), the two polypropylene HFB bellows bodies (1) being spliced end to end, characterized in that: A pipe joint (2) is sleeved at the joint of two polypropylene HFB corrugated pipe bodies (1), a reserved groove (4) is provided on the outer ring surface of the pipe joint (2), two sets of locking joints (8) are inserted into the reserved groove (4), one end of the locking joint (8) is inserted into the outer wall of the polypropylene HFB corrugated pipe body (1), a push ring (10) is sleeved and screwed into the reserved groove (4), and the push ring (10) blocks the locking joint (8).

2. The polypropylene HFB corrugated pipe with a locking joint structure according to claim 1, characterized in that: Sealing rings (3) are fixed at both ends of the inner ring opening of the pipe joint sleeve (2), and the sealing rings (3) are clamped between the pipe joint sleeve (2) and the polypropylene HFB corrugated pipe body (1).

3. The polypropylene HFB corrugated pipe with a locking joint structure according to claim 1, characterized in that: The reserved groove (4) is an annular groove, and two groups of through-openings (5) are provided on the surface of the reserved groove (4), each group of through-openings (5) is provided with a plurality of through-openings, and the through-openings (5) correspond to the locking joints (8) one by one, and one end of the locking joint (8) extending toward the reserved groove (4) is provided with a slope (9).

4. The polypropylene HFB corrugated pipe with a locking joint structure according to claim 3, characterized in that: The inner ring surface of the pipe joint (2) is provided with an inner ring groove (6), which is an annular groove. A rubber band (7) is fixed between two parallel side walls of the inner ring groove (6), and the rubber band (7) is in a circular ring structure. The other end of the locking joint (8) is fixed to the outer ring surface of the rubber band (7). The height of the locking joint (8) is greater than the depth of the through-opening (5). The outer wall of the polypropylene HFB corrugated pipe body (1) is provided with two groups of positioning grooves (18), and the positioning grooves (18) and the locking joints (8) correspond one to one. The push ring (10) pushes the locking joint (8) to tension the rubber band (7) and then inserts it into the positioning groove (18).

5. The polypropylene HFB corrugated pipe with a locking joint structure according to claim 1, characterized in that: The inner ring surface of the push ring (10) is provided with an internal thread, and the surface of the reserved groove (4) is provided with an external thread, and the external thread and the internal thread are matched and connected.

6. The polypropylene HFB corrugated pipe with a locking joint structure according to claim 1, characterized in that: The push ring (10) is provided with a first clamping groove (11) at one end of the side wall facing the reserved groove (4). The first clamping groove (11) is a circular ring groove with a circular cross section. An introduction ring (12) is fixed on both side walls of the reserved groove (4). A rubber ring (13) is fixed on one end of the introduction ring (12). The rubber ring (13) is a circular ring structure with a circular cross section. The rubber ring (13) matches the first clamping groove (11).

7. The polypropylene HFB corrugated pipe with a locking joint structure according to claim 1, characterized in that: The outer ring surface of the push ring (10) is provided with a pick-out groove (14), and a plurality of pick-out grooves (14) are provided. The plurality of pick-out grooves (14) are arranged and distributed at equal distances and in equal sizes along the outer ring surface of the push ring (10).

8. The polypropylene HFB corrugated pipe with a locking joint structure according to claim 1, characterized in that: A rubber cover (15) is fixed to one end of the pipe joint sleeve (2), and a rubber ring (16) is fixed to one end of the rubber cover (15). The rubber ring (16) is inserted into the second clamping groove (17). The second clamping groove (17) is provided at the other end of the pipe joint sleeve (2). The second clamping groove (17) is a circular groove with a circular opening, and the rubber ring (16) is a circle with a circular surface in cross section.

Images