PVC drain pipe structure

Abstract

The utility model discloses a PVC drain pipe structure which comprises a PVC pipe body and a sealing assembly. The PVC pipe body is used for being pre-buried in the ground, and the upper end of the PVC pipe body protrudes out of the ground and is provided with an external thread. The sealing assembly comprises a connecting sleeve, internal threads are arranged on the inner side of the connecting sleeve, the connecting sleeve is in threaded connection with the upper end of the PVC pipe body, a supporting part extending inwards is arranged at the upper end of the connecting sleeve in the circumferential direction, the sealing assembly further comprises a sealing silica gel ring and an extrusion plate, and the sealing silica gel ring and the extrusion plate are each of an annular structure. The inner side of the supporting part, the inner side of the sealing silica gel ring and the inner side of the squeezing plate are flush with one another and form an insertion opening channel where a sewer pipe can be inserted, and the diameter of the insertion opening channel is smaller than the inner diameter of the PVC pipe body and larger than the outer diameter of the sewer pipe. The utility model provides a PVC drain pipe structure which is sealed by a sealing silica gel ring, so that the PVC drain pipe structure is not easy to fall off to block a pipeline, and a drain pipe is easy to disassemble and assemble.

Description

Technical Field

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

[0002] PVC pipes are widely used for domestic water drainage, such as existing kitchen drain pipes, Figure 3 As shown, when the kitchen drain pipe 91 is draining, it is directly inserted into the PVC pipe 92 pre-buried in the ground. In order to prevent sewage from flowing back or odorous gas from diffusing, sealing mud 93 is generally used to seal the gap between the PVC pipe and the drain pipe. Although this method is relatively convenient, the sealing mud is easy to deteriorate over time, and the sealing mud in the gap is easy to fall off and fall into the PVC pipe, which can easily cause pipe blockage. In addition, when the pipe is repaired, after the drain pipe is pulled out of the PVC pipe, the sealing mud is easy to remain on the pipe wall of the PVC pipe, and it is easy to fall into the pipe during cleaning, causing pipe blockage. Utility Model Content

[0003] In order to solve the shortcoming that the existing PVC pipe sealing method easily causes pipeline blockage, the utility model proposes a PVC drainage pipe structure, which is sealed with a sealing silicone ring, is not easy to fall off and cause pipeline blockage, and is easy to disassemble and assemble the sewer pipe.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A PVC drainage pipe structure includes: a PVC pipe body and a sealing assembly; the PVC pipe body is used to be pre-buried in the ground, the upper end of the PVC pipe body protrudes from the ground and is provided with an external thread; the sealing assembly includes a connecting sleeve, the inner side of the connecting sleeve is provided with an internal thread, and is threadedly connected to the upper end of the PVC pipe body, and the upper end of the connecting sleeve is circumferentially provided with a support portion extending inward, the sealing assembly also includes a sealing silicone ring and an extrusion plate, the extrusion plate is attached to the upper end of the PVC pipe body, the sealing silicone ring is provided between the extrusion plate and the support portion, the sealing silicone ring and the extrusion plate are both annular structures, and the inner side of the support portion, the inner side of the sealing silicone ring and the inner side of the extrusion plate are flush with each other, and form a socket channel that can be inserted into the sewer pipe, the diameter of the socket channel is smaller than the inner diameter of the PVC pipe body, and larger than the outer diameter of the sewer pipe.

[0006] Through the above settings, first, the sealing silicone ring is used for sealing, the material is more stable, and it is not easy to fall off and fall into the pipeline to cause pipeline blockage; second, by rotating the connecting sleeve, the inner diameter of the sealing silicone ring can be adjusted, which is convenient for disassembly and assembly of the sewer pipe.

[0007] Furthermore, the drainage pipe structure also includes a guide mechanism, which includes several guide rods parallel to each other. The extension direction of the guide rods is parallel to the movement direction of the connecting sleeve. The lower end of the guide rods is installed on the extrusion plate, and the upper end of the guide rods passes through the support part and is slidably connected to the support part.

[0008] Through the above arrangement, the guide mechanism enables the extrusion plate to rotate synchronously with the connecting sleeve, and the sealing silicone ring is only subjected to vertical extrusion force.

[0009] Furthermore, the guide rod includes an optical axis portion and a screw portion. The optical axis portion passes through the support portion and is slidingly connected to the support portion. The screw portion is coaxially fixedly connected to the lower end of the optical axis portion. A threaded hole is provided on the extrusion plate, and the screw portion is threadedly connected in the threaded hole.

[0010] Through the above arrangement, the guide rod is mounted on the extrusion plate through the screw portion and the threaded hole.

[0011] Furthermore, the threaded holes are evenly arranged along the support part, the threaded holes pass through the upper and lower sides of the extrusion plate, and the upper end face of the PVC pipe body is evenly provided with limiting holes along the circumference into which the screw part can be screwed. The number of threaded holes and limiting holes is the same, and the positions correspond.

[0012] The above arrangement prevents the connection sleeve from loosening, thereby preventing the sealing silicone ring from detaching from the sewer pipe during use.

[0013] Furthermore, the guide rod also includes a rotating head for easy connection with a wrench, and the rotating head is fixedly connected to the upper end of the optical axis.

[0014] Through the above arrangement, it is convenient for the wrench to rotate the guide rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the drainage pipe structure of the embodiment.

[0016] Figure 2 This is a schematic diagram of the drainage pipe structure of the embodiment after the downpipe is installed.

[0017] Figure 3 Schematic diagram of installing a sewer pipe in an existing PVC pipe. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be further specifically described below with reference to embodiments and in conjunction with the accompanying drawings.

[0019] See also Figures 1 to 2, a PVC drainage pipe structure, comprising: a PVC pipe body 3, a sealing assembly 4; the PVC pipe body 3 is used to be pre-buried in the ground, the upper end of the PVC pipe body 3 protrudes from the ground and is provided with an external thread; the sealing assembly 4 includes a connecting sleeve 41, the inner side of the connecting sleeve 41 is provided with an internal thread, and is threadedly connected to the upper end of the PVC pipe body 3, and the upper end of the connecting sleeve 41 is provided with a support portion 411 extending inward along the circumferential direction. The sealing assembly 4 also includes a sealing silicone ring 42 and an extrusion plate 43, which is attached to the upper end of the PVC pipe body 3, and the sealing silicone ring 42 is provided between the extrusion plate 43 and the support portion 411. The sealing silicone ring 42 and the extrusion plate 43 are both annular structures, and the inner side of the support portion 411, the inner side of the sealing silicone ring 42 and the inner side of the extrusion plate 43 are flush with each other, and form a socket channel 5 that can be inserted into the sewer pipe 6. The diameter of the socket channel 5 is smaller than the inner diameter of the PVC pipe body 3, but larger than the outer diameter of the sewer pipe 6.

[0020] Through the above arrangement, first, the sealing silicone ring 42 is used for sealing, and the material is more stable and not easy to fall off and fall into the pipeline to cause pipeline blockage; second, by rotating the connecting sleeve 41, the inner diameter of the sealing silicone ring 42 can be adjusted, which facilitates the disassembly and assembly of the sewer pipe 6.

[0021] In this application, the edge of the extrusion plate 43 is fitted on the inner side of the connecting sleeve 41, and the inner side of the upper end of the connecting sleeve 41 is smooth, so that the extrusion plate 43 can slide up and down smoothly along the inner wall of the connecting sleeve 41; the lower end of the connecting sleeve 41 is provided with an internal thread, and the sleeve is provided on the upper end of the PVC pipe body 3 and is threadedly connected to the upper end of the PVC pipe body 3; the connecting sleeve 41 is rotated, and the connecting sleeve 41 moves up or down under the action of the internal and external threads; initially, see Figure 1 , the inner side of the sealing silicone ring 42 is flush with the inner side of the support part 411, and the upper and lower sides of the sealing silicone ring 42 are in contact with the support part 411 and the extrusion plate 43 respectively; when installing the downpipe 6, the downpipe 6 is inserted into the PVC pipe body 3 through the socket channel 5, and the connecting sleeve 41 is manually rotated. The connecting sleeve 41 moves downward, and the support part 411 squeezes the sealing silicone ring 42 downward. The sealing silicone ring 42 is deformed inward and pressed on the outer wall of the downpipe 6. Figure 2 The sealing silicone ring 42 blocks the gap between the PVC tube body 3 and the sewer pipe 6; when the sewer pipe 6 needs to be removed, the connecting sleeve 41 is rotated, the connecting sleeve 41 moves upward, the supporting portion 411 moves upward away from the extrusion plate 43, the sealing silicone ring 42 is restored, the inner diameter of the sealing silicone ring 42 is expanded and disengaged from the surface of the sewer pipe 6, and the sewer pipe 6 can be pulled out from the socket channel 5.

[0022] As an implementation method, the drainage pipe structure also includes a guide mechanism 7, which includes a number of guide rods parallel to each other. The extension direction of the guide rods is parallel to the movement direction of the connecting sleeve 41. The lower end of the guide rod is installed on the extrusion plate 43, and the upper end of the guide rod passes through the support part 411 and is slidably connected to the support part 411.

[0023] Through the above arrangement, the guide mechanism 7 enables the extrusion plate 43 to rotate synchronously with the connecting sleeve 41, and the sealing silicone ring 42 is only subjected to vertical extrusion force.

[0024] In the present application, a sliding groove is provided on the support portion 411, and the upper end of the guide rod passes through the support portion 411 through the sliding groove and is slidably connected to the support portion 411. The sliding groove is a circular through hole, and the cross-section of the upper end of the guide rod is a circle adapted to the sliding groove. The sliding groove fits the outer surface of the guide rod to prevent the guide rod from shaking. When the connecting sleeve 41 rotates, the connecting sleeve 41 drives the extrusion plate 43 to rotate synchronously through the guide rod, and the extrusion plate 43 slides and rubs on the upper end surface of the PVC pipe body 3. The sealing silicone ring 42 rotates synchronously with the connecting sleeve 41 and the extrusion plate 43, and elastically deforms accordingly with the change in the distance between the support portion 411 and the extrusion plate 43.

[0025] As an implementation method, the guide rod includes an optical axis portion 71 and a screw portion 72. The optical axis portion 71 passes through the support portion 411 and is slidingly connected to the support portion 411. The screw portion 72 is coaxially fixedly connected to the lower end of the optical axis portion 71. A threaded hole 431 is provided on the extrusion plate 43, and the screw portion 72 is threadedly connected to the threaded hole 431.

[0026] Through the above arrangement, the guide rod is mounted on the extrusion plate 43 through the screw portion 72 and the threaded hole 431 .

[0027] As an implementation method, the threaded holes 431 are evenly arranged along the support part 411, and the threaded holes 431 pass through the upper and lower sides of the extrusion plate 43. The upper end surface of the PVC tube body 3 is evenly provided with limiting holes 31 that can be screwed into the screw part 72 along the circumferential direction. The number of threaded holes 431 and the limiting holes 31 are the same, and the positions correspond.

[0028] The above arrangement prevents the connection sleeve 41 from loosening, thereby preventing the sealing silicone ring 42 from being detached from the downpipe 6 during use.

[0029] In this application, the number of the limiting holes 31 and the threaded holes 431 are both six, and two adjacent limiting holes 31 correspond to a sixty-degree central angle, that is, every time the connecting sleeve 41 rotates sixty degrees, the positions of the limiting holes 31 and the threaded holes 431 coincide; initially, see Figure 1 , the screw portion 72 is located above the limiting hole 31, that is, the screw portion 72 has not yet been inserted into the limiting hole 31. After the downpipe 6 is inserted into the socket channel 5, the connecting sleeve 41 is rotated. The connecting sleeve 41 drives the extrusion plate 43 to rotate synchronously through the guide rod. The support portion 411 squeezes the sealing silicone ring 42 downward. The sealing silicone ring 42 is pressed tightly on the surface of the downpipe 6. The threaded hole 431 and the limiting hole 31 coincide with each other. The guide rod is rotated, and the screw portion 72 is rotated downward to enter the limiting hole 31. See Figure 2The screw portion 72 acts as a latch to prevent the downpipe 6 from vibrating during the downpipe operation and causing the connecting sleeve 41 to loosen.

[0030] As an implementation method, the guide rod further includes a rotating head 73 for convenient connection with a wrench, and the rotating head 73 is fixedly connected to the upper end of the optical axis portion 71 .

[0031] Through the above arrangement, it is convenient for the wrench to rotate the guide rod.

[0032] In the present application, the connector may be a regular hexagonal structure, with reference to the nut, so that the guide rod can be rotated by a wrench.

[0033] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to this utility model.

Claims

1. A PVC drainage pipe structure, characterized in that: include: A PVC pipe body, wherein the PVC pipe body is pre-buried in the ground, and the upper end of the PVC pipe body protrudes from the ground and is provided with an external thread; A sealing assembly, wherein the sealing assembly includes a connecting sleeve, an internal thread is provided on the inner side of the connecting sleeve, and the connecting sleeve is threadedly connected to the upper end of the PVC pipe body, and a support portion extending inward is provided on the upper end of the connecting sleeve along the circumferential direction. The sealing assembly also includes a sealing silicone ring and an extrusion plate, and the extrusion plate is attached to the upper end of the PVC pipe body. The sealing silicone ring is provided between the extrusion plate and the support portion. The sealing silicone ring and the extrusion plate are both annular structures, and the inner side of the support portion, the inner side of the sealing silicone ring and the inner side of the extrusion plate are flush with each other, and form a socket channel that can be inserted into the sewer pipe. The diameter of the socket channel is smaller than the inner diameter of the PVC pipe body and larger than the outer diameter of the sewer pipe.

2. A PVC drainage pipe structure according to claim 1, characterized in that: The drainage pipe structure also includes a guide mechanism, which includes a plurality of guide rods parallel to each other. The extension direction of the guide rods is parallel to the movement direction of the connecting sleeve. The lower end of the guide rod is installed on the extrusion plate, and the upper end of the guide rod passes through the support part and is slidably connected to the support part.

3. A PVC drainage pipe structure according to claim 2, characterized in that: The guide rod includes an optical axis portion and a screw portion, the optical axis portion passes through the support portion and is slidably connected to the support portion, the screw portion is coaxially fixedly connected to the lower end of the optical axis portion, a threaded hole is provided on the extrusion plate, and the screw portion is threadedly connected to the threaded hole.

4. A PVC drainage pipe structure according to claim 3, characterized in that: The threaded holes are evenly arranged along the support part, and the threaded holes pass through the upper and lower sides of the extrusion plate. The upper end surface of the PVC pipe body is evenly provided with limiting holes that can be screwed into the screw part along the circumference. The threaded holes and the limiting holes are the same in number and have corresponding positions.

5. A PVC drainage pipe structure according to claim 3, characterized in that: The guide rod further comprises a rotating head for convenient connection with a wrench, and the rotating head is fixedly connected to the upper end of the optical axis portion.

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