Polypropylene MPP pipe

Abstract

The utility model relates to the technical field of pipes, and discloses a polypropylene MPP pipe which comprises a polypropylene MPP pipe body, a connecting pipe is fixed to one end of the polypropylene MPP pipe body, a sleeve is arranged on the outer wall of the other end of the polypropylene MPP pipe body in a sleeved mode, a connecting ring is fixed to the end, close to the connecting pipe, of the sleeve, the connecting ring is fixed to the outer wall of the polypropylene MPP pipe body, and the connecting ring is fixed to the outer wall of the polypropylene MPP pipe body. The inner wall of the sleeve, the outer wall of the polypropylene MPP pipe body and one side of the connecting ring jointly define an annular groove allowing the connecting pipe of the other polypropylene MPP pipe body to be inserted therein, a plurality of connecting bases are evenly arranged on the outer wall of the sleeve in the circumferential direction, and inserting rods are arranged at the positions, corresponding to the connecting bases, of the outer wall of the connecting pipe. The connecting seats are provided with positioning holes allowing the inserting rods to be inserted therein, and each connecting seat is provided with a lock catch assembly in the positioning hole. The problems that the butt joint operation of existing polypropylene pipes is very troublesome, and the working efficiency is reduced are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipes, in particular to a polypropylene MPP pipe. Background Art

[0002] With the rapid development of my country's plastic pipe industry, various types of plastic pipes are widely used in industries such as industry, construction, and agriculture. Among these, modified polypropylene pipes offer superior performance, boasting high strength, high toughness, compressive strength, flame retardancy, and corrosion resistance. Due to their excellent overall performance, polypropylene pipes are often used as electrical protection pipes for wires and cables.

[0003] When used as electrical protection pipes, polypropylene (MPP) pipe bodies often need to be spliced ​​together to accommodate longer wires or cables. Traditionally, there are two methods for joining two pipes: one is to fuse the two pipes together, and the other is to insert a butt joint between the two pipes and then thread the two pipes to the joint at each end. Both methods are cumbersome, time-consuming, and labor-intensive, reducing work efficiency. Utility Model Content

[0004] In view of this, the purpose of the present invention is to provide a polypropylene MPP pipe to solve the problem that the docking operation of existing polypropylene pipes is very troublesome and reduces work efficiency.

[0005] The utility model solves the above technical problems through the following technical means:

[0006] A polypropylene MPP pipe comprises a polypropylene MPP pipe body, a connecting pipe being fixed at one end of the polypropylene MPP pipe body, and a sleeve being sleeved on the outer wall of the other end, a connecting ring being fixed at the end of the sleeve close to the connecting pipe, and the connecting ring being fixed on the outer wall of the polypropylene MPP pipe body, the inner wall of the sleeve, the outer wall of the polypropylene MPP pipe body and one side of the connecting ring together form an annular groove for inserting the connecting pipe of another polypropylene MPP pipe body, the outer wall of the sleeve being evenly provided with a plurality of connecting seats along the circumference, an insertion rod being provided on the outer wall of the connecting pipe corresponding to the position of each connecting seat, a positioning hole for inserting the insertion rod being opened on the connecting seat, and a locking assembly being provided in the positioning hole of each connecting seat.

[0007] Furthermore, the inner wall of the positioning hole is provided with a mounting groove, and the locking assembly is located in the mounting groove. The locking assembly includes a locking rod and a first spring, one end of the first spring is fixedly connected to the inner wall of the mounting groove, and the other end is fixedly connected to one end of the locking rod, the locking rod is slidably matched with the mounting groove, and the other end of the locking rod extends out of the mounting groove and is in sliding friction contact with the outer wall of the insertion rod, and the surface of the insertion rod is provided with a card groove that matches the locking rod.

[0008] Further, the lock rod is provided with an extrusion inclined surface for extruding the insertion rod near the one end of the positioning hole, and the free end of the insertion rod is provided with an arc-shaped chamfer.

[0009] Further, the inside of the connecting seat is provided with an adjusting groove on one side of the mounting groove, the lock rod is fixedly provided with a supporting rod extending into the adjusting groove, the adjusting groove is provided with an adjusting member, the adjusting member is used for driving the supporting rod to move towards the spring direction, and one end of the adjusting member protrudes out of the connecting seat to form an operation end.

[0010] Further, the adjusting member is threadedly connected with the connecting seat, one end surface of the adjusting member in the adjusting groove is fixedly provided with a knob, and when the adjusting member rotates, the knob abuts against the supporting rod to drive the supporting rod to move.

[0011] Further, the annular plate is slidably installed in the annular groove and can abut against one end of the connecting pipe, a second spring is installed between the annular plate and the connecting ring, one end of the second spring is fixed on the connecting ring, and the other end is fixed on the annular plate.

[0012] Further, the side, away from the spring, of the annular plate is fixedly provided with an annular buffer pad.

[0013] Further, the inner diameter of the connecting pipe is greater than the outer diameter of the polypropylene MPP pipe body, the inner wall of the connecting pipe is provided with a rubber layer, and the connecting pipe and one end of the polypropylene MPP pipe body are in interference fit.

[0014] Further, the end, away from the sleeve, of the connecting pipe is designed as a round corner structure.

[0015] The utility model discloses a polypropylene MPP pipe structure, which comprises a polypropylene MPP pipe body, a connecting pipe and a sleeve.

[0016] The utility model discloses a polypropylene MPP pipe structure, which comprises a polypropylene MPP pipe body, a connecting pipe and a sleeve. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structure schematic diagram of polypropylene MPP pipe.

[0018] Figure 2 It is Figure 1 It is an enlarged structure schematic diagram of A in the figure.

[0019] Figure 3 is Figure 1 is an enlarged structural schematic view of B in figure 1.

[0020] Figure 4 is a partial sectional view of two polypropylene MPP pipe bodies connected by the utility model.

[0021] Figure 5 is Figure 4 is an enlarged structural schematic view of C in figure 2.

[0022] Figure 6 is a transverse sectional view of the connecting seat in the utility model.

[0023] Figure 7 is a longitudinal sectional view of the connecting seat in the utility model.

[0024] wherein,

[0025] 1, polypropylene MPP pipe body; 2, connecting pipe; 3, sleeve; 4, connecting ring; 5, annular groove; 6, annular plate; 7, buffer pad; 8, second spring; 9, rubber layer; 10, connecting seat; 11, insertion rod; 12, positioning hole; 13, adjusting piece; 14, shifting block; 15, locking rod; 16, clamping groove; 17, mounting groove; 20, first spring; 21, adjusting groove; 22, connecting groove; 23, limiting block; 24, stop block; 25, threaded hole. DETAILED DESCRIPTION

[0026] The advantages and effects of the utility model will be understood by those skilled in the art from the content disclosed in the specification. It should be noted that the drawings provided in the following embodiments are only used for exemplary description, and the representation is only a schematic view, not a physical drawing, and cannot be understood as a limitation on the utility model. In order to better illustrate the embodiments of the utility model, some components in the drawings will be omitted, enlarged or reduced, which does not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings can be omitted.

[0027] The same or similar reference numerals in the drawings of the embodiments of the utility model correspond to the same or similar components. In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "back" and the like is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationship in the drawings are only used for exemplary description, and cannot be understood as a limitation on the utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0028] As Figure 1-7 shown, the utility model relates to a kind of polypropylene MPP pipes, including polypropylene MPP pipe body 1, the one end of polypropylene MPP pipe body 1 integrally forms connecting pipe 2, the outer wall of other end is equipped with sleeve pipe 3, sleeve pipe 3 is integrally formed with connecting ring 4 at one end close to connecting pipe 2, connecting ring 4 is fixed on the outer wall of polypropylene MPP pipe body 1, the inner wall of sleeve pipe 3, the outer wall of polypropylene MPP pipe body 1 and the side of connecting ring 4 away from connecting pipe 2 jointly form annular groove 5, the side of this annular groove 5 away from connecting ring 4 is open structure, so that the connecting pipe 2 of another polypropylene MPP pipe body 1 can be inserted into the annular groove 5, the outer wall of sleeve pipe 3 is evenly provided with three connecting seats 10 along the circumference, the outer wall of connecting pipe 2 is fixedly provided with inserting rod 11 at the position corresponding to each connecting seat 10, locating hole 12 for inserting rod 11 insertion is formed in connecting seat 10, and locking catch assembly is set in each connecting seat 10 in locating hole 12.

[0029] In fact, the locking catch assembly can be spherical lock pin and spring, the inner wall of locating hole 12 is provided with inwardly recessed mounting groove 17 along the length direction of connecting seat 10, spherical lock pin is movably arranged in mounting groove 17, spring is arranged on the inner side of spherical lock pin, the two ends of spring are fixedly connected with spherical lock pin and the inner wall of mounting groove 17 respectively, the outer side of spherical lock pin extends out of mounting groove 17 and is located in locating hole 12, at this time, locating hole 12 adopts square hole, inserting rod 11 is square rod, just by inserting rod 11 inserted into locating hole 12 and extruding spherical lock pin, so that connecting pipe 2 and sleeve pipe 3 form locking and fixing.In the embodiment, the inner wall of locating hole 12 is provided with inwardly recessed mounting groove 17 along the length direction of connecting seat 10, locking catch assembly is located in mounting groove 17, locking catch assembly includes lock rod 15 and first spring 20, one end of first spring 20 is fixedly connected with the inner wall of mounting groove 17, the other end is fixedly connected with one end of lock rod 15, lock rod 15 is slidably connected with mounting groove 17, the other end of lock rod 15 extends out of mounting groove 17 and is located in locating hole 12, lock rod 15 and the outer wall of inserting rod 11 are in sliding frictional contact, the surface of inserting rod 11 is provided with clamping groove 16 matched with lock rod 15.

[0030] The end of lock rod 15 close to locating hole 12 is provided with extrusion inclined surface for extruding inserting rod 11, and the free end of inserting rod 11 is provided with arc chamfer, and the extrusion inclined surface is arranged to facilitate the position of lock rod 15 to be controlled to move by extrusion inclined surface under the elastic action of first spring 20, so that lock rod 15 is extruded into mounting groove 17.

[0031] The connector 10 has an adjustment slot 21 formed inside it, on one side of the mounting slot 17. A support rod is integrally formed on the locking rod 15, extending into the adjustment slot 21. The support rod and the locking rod 15 form a T-shaped structure. In this embodiment, the first spring 20 is fixedly connected to one side of the support rod at the end closest to the locking rod 15. The adjustment slot 21 is circular, and a connecting slot 22 is provided between the adjustment slot 21 and the mounting slot 17. The connecting slot 22 connects the adjustment slot 21 with the mounting slot 17, allowing the support rod to slide within the connecting slot 22 along the length of the mounting slot 17. An adjustment member 13 is positioned within the adjustment slot 21, configured to drive the support rod to compress the first spring 20. The outer end of the adjustment member 13 protrudes from the outside of the connector 10, forming an operating end. The adjustment member 13 is threadedly engaged with the connector 10. A shift block 14 is fixed to the surface of one end of the adjustment member 13 located within the adjustment slot 21. When the adjustment member 13 rotates, the shift block 14 abuts against the support rod, driving the support rod away from the positioning hole 12. In this embodiment, a threaded hole 25 is provided on the surface of the connecting seat 10, and the threaded hole 25 is connected to the adjustment groove 21. The adjusting member 13 is a bolt, and the adjusting member 13 is threadedly connected to the threaded hole 25. The aperture of the threaded hole 25 is smaller than the diameter of the adjusting groove 21. The inner end of the adjusting member 13 is located in the adjusting groove 21 and is fixed with a shift block 14. There is a certain distance between the inner end of the adjusting member 13 and the inner wall of the adjusting groove 21, so that the adjusting member 13 can rotate. The rotation of the adjusting member 13 drives the shift block 14 to rotate. During the rotation of the shift block 14, it abuts against the support rod, thereby driving the locking rod 15 to move away from the positioning hole 12, so that the insertion rod 11 can be separated from the connecting seat 10, which is convenient for disassembly of the two MMP pipes during later maintenance and replacement.

[0032] In the above embodiment, a limit block 23 can be provided on the surface of the connecting seat 10 in the circumferential direction of the adjusting member 13, and a stop block 24 is provided at the operating end of the adjusting member 13 to abut against the limit block 23. Such a structural design can only allow the adjusting member 13 to rotate within a specified angle, thereby reducing errors made by staff when disassembling the MMP tube.

[0033] An annular plate 6 capable of pressing against one end of the connecting tube 2 is slidably installed in the annular groove 5. The inner diameter of the annular plate 6 is equal to the outer diameter of the polypropylene MPP tube body 1, and the outer diameter of the annular plate 6 is equal to the inner diameter of the sleeve 3. A second spring 8 is installed between the annular plate 6 and the connecting ring 4. One end of the second spring 8 is fixed to the connecting ring 4, and the other end is fixed to the annular plate 6. When the connecting tube 2 of one polypropylene MPP tube body 1 is inserted into the annular groove 5 of another polypropylene MPP tube body 1, under the elastic force of the second spring 8, the end of the connecting tube 2 inserted into the annular groove 5 can press against the annular plate 6.

[0034] When it is necessary to connect two different polypropylene MPP pipe bodies 1, first insert the connecting pipe 2 of the first polypropylene MPP pipe body 1 into the annular groove 5 of the second polypropylene MPP pipe body 1, and align the three insertion rods 11 on the connecting pipe 2 of the first polypropylene MPP pipe body 1 with the three connecting seats 10 on the sleeve 3 of the second polypropylene MPP pipe body 1, so that the three insertion rods 11 are respectively inserted into the positioning holes 12 of the three connecting seats 10. In this process, the connecting pipe 2 first abuts the annular plate 6, and the annular plate 6 is always pressed against the connecting pipe 2 under the elastic force of the second spring 8; when the insertion rod 11 is inserted into the positioning hole 12 on the connecting seat 10 and is locked and fixed by the locking assembly, it can limit the movement of the two connecting pipes 2 in the axial direction and the circumferential direction, thereby connecting the two polypropylene MPP pipe bodies 1 together. Through such a setting, the operation of connecting the two polypropylene MPP pipe bodies 1 is very simple, which greatly improves work efficiency. When it is necessary to disassemble the polypropylene MPP tube body 1, rotate the adjusting piece 13, and the adjusting piece 13 drives the support rod and the locking rod 15 to move away from the positioning hole 12 through the shift block 14, thereby releasing the locking effect of the insertion rod 11 and the connecting seat 10. In this way, when the locking effect of the three insertion rods 11 is released, the two polypropylene MPP tube bodies 1 can be directly separated, which is convenient for disassembly.

[0035] In this embodiment, an annular cushion 7 is fixed to the side of the annular plate 6 facing away from the second spring 8. The annular cushion 7 is specifically a rubber gasket. When the connecting pipe 2 is inserted into the annular groove 5, one end of the connecting pipe 2 can abut against the annular cushion 7. The annular cushion 7 replaces the annular plate 6 and comes into contact with the connecting pipe 2. On the one hand, this can reduce wear between components and extend the service life of the pipe. On the other hand, it can also provide a certain sealing effect on the connection between the two polypropylene (MPP) pipe bodies 1.

[0036] In this embodiment, the inner diameter of the connecting tube 2 is larger than the outer diameter of the polypropylene MPP tube body 1, and a rubber layer 9 is provided on the inner side wall of the connecting tube 2. By providing this rubber layer 9, when the connecting tube 2 is inserted into the annular groove 5, the connecting tube 2 is sleeved on one end of the polypropylene MPP tube body 1 by an interference fit, and the rubber layer 9 directly contacts the outer side wall of the polypropylene MPP tube body 1, further enhancing the sealing performance of the connection part of the two polypropylene MPP tube bodies 1.

[0037] In this embodiment, the end of the connecting pipe 2 away from the polypropylene MPP pipe body 1 is designed to have a rounded corner structure. Similarly, the end of the sleeve 3 away from the connecting pipe 2 can also be designed to have a rounded corner structure. This arrangement facilitates smoother insertion of the connecting pipe 2 into the annular groove 5, thereby improving work efficiency.

[0038] The above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and such modifications or equivalent substitutions shall be encompassed by the claims of the present invention. The techniques, shapes, and structural portions not described in detail in the present invention are well known.

Claims

1. A polypropylene MPP pipe, comprising a polypropylene MPP pipe body, characterized in that: A connecting pipe is fixed to one end of the polypropylene MPP pipe body, and a sleeve is provided on the outer wall of the other end. A connecting ring is fixed to the end of the sleeve close to the connecting pipe, and the connecting ring is fixed on the outer wall of the polypropylene MPP pipe body. The inner wall of the sleeve, the outer wall of the polypropylene MPP pipe body and one side of the connecting ring together form an annular groove for inserting the connecting pipe of another polypropylene MPP pipe body. A plurality of connecting seats are evenly arranged on the outer wall of the sleeve along the circumference, and an insertion rod is provided on the outer wall of the connecting pipe corresponding to the position of each connecting seat. A positioning hole for inserting the insertion rod is opened on the connecting seat, and a locking assembly is provided in the positioning hole of each connecting seat.

2. A polypropylene MPP pipe according to claim 1, characterized in that: The inner wall of the positioning hole is provided with a mounting groove, and the locking assembly is located in the mounting groove. The locking assembly includes a locking rod and a first spring, one end of the first spring is fixedly connected to the inner wall of the mounting groove, and the other end is fixedly connected to one end of the locking rod, the locking rod is slidably matched with the mounting groove, and the other end of the locking rod extends out of the mounting groove and is in sliding friction contact with the outer wall of the insertion rod, and the surface of the insertion rod is provided with a card groove that matches the locking rod.

3. The polypropylene MPP pipe according to claim 2, characterized in that: An end of the locking rod close to the positioning hole is provided with an extrusion inclined surface for extruding the insertion rod, and a free end of the insertion rod is provided with an arc chamfer.

4. The polypropylene MPP pipe according to claim 2, characterized in that: An adjustment groove is provided inside the connecting seat on one side of the mounting groove, and a support rod is fixed on the locking rod and extends into the adjustment groove. An adjustment member is provided in the adjustment groove, and the adjustment member is used to drive the support rod to move toward the direction close to the first spring. One end of the adjustment member protrudes from the outside of the connecting seat to form an operating end.

5. The polypropylene MPP pipe according to claim 4, characterized in that: The adjusting member is threadedly engaged with the connecting seat, and a shift block is fixed on one end surface of the adjusting member located in the adjusting groove. When the adjusting member rotates, the shift block contacts the support rod to drive the support rod to move.

6. The polypropylene MPP pipe according to claim 1, characterized in that: An annular plate capable of pressing against one end of the connecting pipe is slidably installed in the annular groove, and a second spring is installed between the annular plate and the connecting ring. One end of the second spring is fixed to the connecting ring, and the other end is fixed to the annular plate.

7. The polypropylene MPP pipe according to claim 6, characterized in that: An annular buffer pad is fixed on the side of the annular plate facing away from the second spring.

8. The polypropylene MPP pipe according to claim 1, characterized in that: The inner diameter of the connecting pipe is larger than the outer diameter of the polypropylene MPP pipe body. A rubber layer is provided on the inner wall of the connecting pipe. The connecting pipe and one end of the polypropylene MPP pipe body are interference fit.

9. The polypropylene MPP pipe according to claim 1, characterized in that: One end of the connecting pipe away from the sleeve is designed to have a rounded structure.

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