CN212776186U - Pipeline connecting structure - Google Patents
Pipeline connecting structure Download PDFInfo
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- CN212776186U CN212776186U CN202021797125.9U CN202021797125U CN212776186U CN 212776186 U CN212776186 U CN 212776186U CN 202021797125 U CN202021797125 U CN 202021797125U CN 212776186 U CN212776186 U CN 212776186U
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- pipeline
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- fluid hole
- diameter
- diameter expansion
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Abstract
The utility model discloses a pipeline connecting structure, which comprises a first pipeline, a second pipeline, a plug and an adhesive, wherein the first pipeline comprises a first pipeline body, a conical connecting part and a diameter enlarging part, and the diameter enlarging part is provided with a first fluid hole and a second fluid hole; the end surface of the second pipeline is tightly attached to the inner wall of the conical connecting part; an annular channel is formed between the outer wall of the second pipeline and the inner wall of the diameter expansion part, the first fluid hole and the second fluid hole are respectively communicated with the annular channel, and the annular channel is filled with the adhesive; the plug comprises a cylindrical part and a lug, and the inner wall and the outer wall of the cylindrical part are respectively clung to the second pipeline and the diameter-enlarged part. When the pipeline connecting device is used, the adhesive enters from the first fluid hole through the extruder, overflows from the second fluid hole after filling the annular channel, air is discharged from the second fluid hole in the process, the first pipeline and the second pipeline can be firmly connected after the adhesive is solidified, and ideal sealing performance is obtained.
Description
Technical Field
The utility model relates to a pipeline connection structure especially indicates a firm in connection and the good pipeline connection structure of leakproofness.
Background
Plastic pipes are generally produced by extruding synthetic resins, i.e. polyesters, as raw materials in a pipe-making machine by the "plastic" method with the addition of stabilizers, lubricants, plasticizers, etc. The pipe is mainly used as a running water supply system pipe, a drainage, exhaust and pollution discharge sanitary pipe, a food (beverage) processing, an underground drainage pipe system, a rainwater pipe, a threading pipe for installing and sleeving electric wires and the like of a house building.
In actual production and installation, it is often necessary to join pipes of different diameters, and if the inner diameter of a large diameter plastic pipe is substantially equal to the outer diameter of a small diameter plastic pipe, glue may be used for bonding. However, when the inner diameter of the large-diameter plastic pipe is significantly larger than the outer diameter of the small-diameter plastic pipe, the large-diameter plastic pipe cannot be directly bonded by glue.
SUMMERY OF THE UTILITY MODEL
The utility model provides a pipeline connection structure, its aim at provide one kind can carry out the plastic tubing boring cutter of cutting to the plastic tubing inner wall.
In order to achieve the purpose, the utility model provides a technical scheme as follows:
a pipeline connecting structure comprises a first pipeline, a second pipeline, an annular plug and an adhesive, wherein the first pipeline comprises a straight pipe-shaped first pipeline body, a conical connecting part and a straight pipe-shaped diameter enlarging part, the first pipeline body, the conical connecting part and the diameter enlarging part are integrally formed, two ends of the conical connecting part are respectively connected with the first pipeline body and the diameter enlarging part, the side wall of the diameter enlarging part is respectively provided with a first fluid hole and a second fluid hole, the first fluid hole is close to the conical connecting part, and the second fluid hole is close to the end face of the diameter enlarging part; the inner diameter of the diameter-enlarged part is larger than the outer diameter of the second pipeline, one end of the second pipeline extends into the diameter-enlarged part, the end face of the second pipeline forms a cone shape, and the end face of the second pipeline is tightly attached to the inner wall of the cone-shaped connecting part; an annular channel is formed between the outer wall of the part of the second pipeline extending into the diameter expansion part and the inner wall of the diameter expansion part, the first fluid hole and the second fluid hole are respectively communicated with the annular channel, and the annular channel is filled with the adhesive; the plug comprises a cylindrical part and a lug, wherein the cylindrical part and the lug are integrally formed, the lug is positioned at one end of the cylindrical part, the other end of the cylindrical part is inserted into the annular channel from the end face of the diameter expansion part, the outer wall of the cylindrical part is tightly attached to the inner wall of the diameter expansion part, the inner wall of the cylindrical part is tightly attached to the outer wall of the second pipeline, and the lug is tightly attached to the end face of the diameter expansion part.
In a preferred embodiment, the first and second fluid orifices are at a radial distance, furthest distal.
In a preferred embodiment, the first pipeline further comprises a sealing ring, a groove is formed at the junction of the conical connecting part and the first pipeline body, and the sealing ring is fixed in the groove.
In a preferred embodiment, the second pipe is provided with an inwardly recessed annular rolling groove adjacent to an end face of the second pipe and opposite the first fluid hole.
In a preferred embodiment, the inner wall and the outer wall of the cylindrical portion are provided with circular protrusions, respectively.
In a preferred embodiment, the adhesive is glue.
Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect: form the ring shape passageway between the outer wall of second pipeline and the inner wall of diameter enlargement portion, this ring shape passageway communicates with first fluid hole and second fluid hole respectively, during the use, the adhesive passes through the extruder and gets into from first fluid hole, after filling up the ring shape passageway, again from second fluid hole excessive, at this in-process, the air in the ring shape passageway also can be discharged from the second fluid hole gradually, treat the adhesive solidification back, just can firmly connect first pipeline and second pipeline to obtain ideal leakproofness.
Drawings
Fig. 1 is a schematic structural diagram of each component of the present invention.
Fig. 2 is a schematic view of the pre-installed cross-sectional structure of each component of the present invention.
Fig. 3 is an enlarged schematic view of a portion a in fig. 2.
Fig. 4 is a schematic view of the cross-sectional structure of the adhesive filled in the present invention.
Detailed Description
For further understanding of the present invention, the present invention will be described in detail with reference to the following examples, which are provided for illustration of the present invention but are not intended to limit the scope of the present invention.
Referring to fig. 1, a pipe connection structure mainly includes a first pipe 1, a second pipe 2, and a plug 3.
Referring also to fig. 2, the first pipe 1 includes a straight pipe-shaped first pipe body 11, a conical connecting portion 12, and a straight pipe-shaped enlarged diameter portion 13, the diameter of the first pipe body 11 being smaller than the diameter of the enlarged diameter portion 13. The first pipeline body 11, the conical connecting part 12 and the diameter enlarging part 13 are integrally formed, and the small-diameter end of the conical connecting part 12 is connected with the first pipeline body 11; the large diameter end of the conical connecting portion 12 is connected to the enlarged diameter portion 13. The side wall of the diameter-enlarging portion 13 is provided with a first fluid hole 14 and a second fluid hole 15, respectively, the first fluid hole 14 is close to the conical connecting portion 12, the second fluid hole 14 is close to the end surface of the diameter-enlarging portion 13, and the first fluid hole 14 and the second fluid hole 15 are located at the farthest ends in the radial distance from each other.
The second pipeline 2 is a straight pipe, the inner diameter of the diameter-enlarged part 13 is larger than the outer diameter of the second pipeline 2, one end of the second pipeline 2 extends into the diameter-enlarged part 13, the end face of the second pipeline 2 comprises a conical part and a flat part, and the conical part of the end face of the second pipeline 2 is tightly attached to the inner wall of the conical connecting part 12 when the second pipeline is installed. The first pipeline 1 further comprises a sealing ring 16, a groove (not marked in the figure) is arranged at the junction of the conical connecting part 12 and the first pipeline body 11, the sealing ring 16 is fixed in the groove, and the straight part of the end surface of the second pipeline 2 is tightly attached to the sealing ring 16.
An annular channel 4 is formed between the outer wall of the part of the second pipeline 2 extending into the diameter expansion part 13 and the inner wall of the diameter expansion part 13, and the first fluid hole 14 and the second fluid hole 15 are respectively communicated with the annular channel 4.
The plug 3 comprises a cylindrical part 31 and a lug 32 which are integrally formed, the lug 32 is positioned at one end of the cylindrical part 31, the other end of the cylindrical part 31 is inserted into the annular channel 4 from the end surface of the diameter-enlarged part 13, the outer wall of the cylindrical part 31 is tightly attached to the inner wall of the diameter-enlarged part 13, the inner wall of the cylindrical part 31 is tightly attached to the outer wall of the second pipeline 2, and the lug 32 is tightly attached to the end surface of the diameter-enlarged part 13.
With continued reference to fig. 2, fig. 2 is a schematic view of a connection structure of the first pipe 1, the second pipe 2 and the plug 3 after being pre-installed, at this time, a circular ring-shaped channel 4 is formed between the outer wall of the second pipe 2 and the inner wall of the enlarged diameter portion 13, and the circular ring-shaped channel 4 is respectively communicated with the first fluid hole 14 and the second fluid hole 15. After the cylindrical part 31 of the plug 3 is inserted into the circular ring-shaped channel 4, one end of the circular ring-shaped channel 4 is plugged, and the requirement of liquid sealing is basically met; in addition, the end surface of the second pipeline 2 is tightly attached to the inner wall of the conical connecting part 12, and then the sealing ring 16 is matched to block the other end of the annular channel 4, so that the requirement of liquid sealing can be basically met. At this time, the circular ring-shaped passage 4 has only two passages of the first fluid hole 14 and the second fluid hole 15.
In use, the adhesive 5 (usually glue) enters from the first fluid hole 14 through an extruder (not shown in the figure), and overflows from the second fluid hole 15 after the adhesive gradually fills the circular channel 4, and in the process, the air in the circular channel 4 is gradually exhausted from the second fluid hole 15 until the adhesive is solidified (as shown in fig. 4), so that the first pipeline 1 and the second pipeline 2 can be firmly connected, and ideal sealing performance is obtained.
In the preferred embodiment, the second pipe 2 is provided with an inwardly recessed annular rolled groove 21, which rolled groove 21 is located near the end face of the second pipe 2 and is opposite the first fluid hole 14. Since the first fluid hole 14 and the rolling groove 21 are opposed to each other, the adhesive 5 enters the rolling groove 21 first after entering from the first fluid hole, so that the resistance is reduced and the adhesive can flow to the annular channel 4 more easily.
Referring also to fig. 3, for better sealing effect, circular protrusions 33 and 34 are respectively formed on the inner wall and the outer wall of the cylindrical portion 31.
The present invention has been described in detail with reference to the embodiments, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.
Claims (6)
1. A pipeline connecting structure is characterized by comprising a first pipeline, a second pipeline, an annular plug and an adhesive, wherein the first pipeline comprises a straight-pipe-shaped first pipeline body, a conical connecting part and a straight-pipe-shaped diameter expansion part, the first pipeline body, the conical connecting part and the diameter expansion part are integrally formed, two ends of the conical connecting part are respectively connected with the first pipeline body and the diameter expansion part, the side wall of the diameter expansion part is respectively provided with a first fluid hole and a second fluid hole, the first fluid hole is close to the conical connecting part, and the second fluid hole is close to the end face of the diameter expansion part; the inner diameter of the diameter-enlarged part is larger than the outer diameter of the second pipeline, one end of the second pipeline extends into the diameter-enlarged part, the end face of the second pipeline forms a cone shape, and the end face of the second pipeline is tightly attached to the inner wall of the cone-shaped connecting part; an annular channel is formed between the outer wall of the part of the second pipeline extending into the diameter expansion part and the inner wall of the diameter expansion part, the first fluid hole and the second fluid hole are respectively communicated with the annular channel, and the annular channel is filled with the adhesive; the plug comprises a cylindrical part and a lug, wherein the cylindrical part and the lug are integrally formed, the lug is positioned at one end of the cylindrical part, the other end of the cylindrical part is inserted into the annular channel from the end face of the diameter expansion part, the outer wall of the cylindrical part is tightly attached to the inner wall of the diameter expansion part, the inner wall of the cylindrical part is tightly attached to the outer wall of the second pipeline, and the lug is tightly attached to the end face of the diameter expansion part.
2. A pipe connecting structure according to claim 1, wherein: the first and second fluid apertures are at a radial distance, most distal.
3. A pipe connecting structure according to claim 1, wherein: the first pipeline further comprises a sealing ring, a groove is formed in the junction of the conical connecting portion and the first pipeline body, and the sealing ring is fixed in the groove.
4. A pipe connecting structure according to claim 1, wherein: the second pipeline is provided with an inward-sunken annular rolling groove which is close to the end face of the second pipeline and is opposite to the first fluid hole.
5. A pipe connecting structure according to claim 1, wherein: the inner wall and the outer wall of the cylindrical part are respectively provided with circular bulges.
6. A pipe connecting structure according to claim 1, wherein: the adhesive is glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021797125.9U CN212776186U (en) | 2020-08-25 | 2020-08-25 | Pipeline connecting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021797125.9U CN212776186U (en) | 2020-08-25 | 2020-08-25 | Pipeline connecting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212776186U true CN212776186U (en) | 2021-03-23 |
Family
ID=75054772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021797125.9U Active CN212776186U (en) | 2020-08-25 | 2020-08-25 | Pipeline connecting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212776186U (en) |
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2020
- 2020-08-25 CN CN202021797125.9U patent/CN212776186U/en active Active
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