CN212960384U - Quick-assembly threaded maintenance-free steel-plastic adapter - Google Patents
Quick-assembly threaded maintenance-free steel-plastic adapter Download PDFInfo
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- CN212960384U CN212960384U CN201922490341.2U CN201922490341U CN212960384U CN 212960384 U CN212960384 U CN 212960384U CN 201922490341 U CN201922490341 U CN 201922490341U CN 212960384 U CN212960384 U CN 212960384U
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- steel pipe
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- 239000004033 plastic Substances 0.000 title claims abstract description 113
- 229920003023 plastic Polymers 0.000 title claims abstract description 113
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 122
- 239000010959 steel Substances 0.000 claims abstract description 122
- 238000000465 moulding Methods 0.000 claims abstract 2
- 239000011248 coating agent Substances 0.000 claims description 12
- 238000000576 coating method Methods 0.000 claims description 12
- 230000007246 mechanism Effects 0.000 claims description 6
- 230000008878 coupling Effects 0.000 abstract description 2
- 238000010168 coupling process Methods 0.000 abstract description 2
- 238000005859 coupling reaction Methods 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 description 7
- 238000003466 welding Methods 0.000 description 6
- 239000003973 paint Substances 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Abstract
The utility model relates to a pipe connection technical field specifically is crossover sub is moulded to fast-assembling screw thread formula non-maintaining steel, including plastic tubing, steel pipe and steel plastic connector cap, connect through steel plastic connector cap between plastic tubing and the steel pipe, steel pipe one end is for moulding the end, the other end is the steel end, steel end threaded connection has the adapter sleeve. The utility model discloses can solve current coupling and need the field weld to realize the pipe connection, troublesome poeration's problem.
Description
Technical Field
The utility model relates to a pipe connection technical field specifically is adapter is moulded to maintenance-free steel of fast-assembling screw thread formula.
Background
In the field of fluid conveying pipelines such as gas pipelines, common pipelines are metal pipelines such as steel pipes and polyethylene plastic pipelines. Metal piping is typically used for medium and high pressure fluid delivery systems, while plastic piping is typically used primarily for low pressures. Furthermore, for safety reasons, the state-related engineering code states that plastic pipes are not allowed to directly enter the end of the pipe, i.e. the user's room. Therefore, steel-plastic pipe conversion is often required when transitioning from high pressure to low pressure piping and when plastic piping is brought into the home from a yard pipe. In the prior art, the joints of the steel-plastic pipe fittings are usually connected by steel-plastic conversion joints.
When the existing steel-plastic adapter is actually used, one end of the existing steel-plastic adapter is connected with a plastic pipe through hot melting, and the other end of the existing steel-plastic adapter is connected with a steel pipe in a welding mode. This results in the need to weld at the assembly site, and workers need to carry the welding device with them to the site for pipe connection, which is cumbersome to operate and greatly limits the assembly efficiency. In addition, the steel pipe part of the existing steel-plastic adapter adopts a painting mode to prevent corrosion, but the adapter is exposed outside, exposed in the sun and exposed at night, paint falls off after being used for a period of time, is easy to corrode and leaks gas, has potential safety hazards, and needs to be frequently checked and repaired to brush paint for preventing corrosion, and is troublesome to operate.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the intention is providing adapter is moulded to fast-assembling screw thread formula non-maintaining steel to solve current coupling and need the field weld to realize the pipe connection, troublesome poeration's problem.
In order to achieve the above object, the utility model provides a following technical scheme:
the quick-assembly threaded maintenance-free steel-plastic adapter comprises a plastic pipe, a steel pipe and a steel-plastic adapter cap, wherein the plastic pipe is connected with the steel pipe through the steel-plastic adapter cap, one end of the steel pipe is a plastic connection end, the other end of the steel pipe is a steel connection end, and the steel connection end is in threaded connection with a connection sleeve.
The principle and the beneficial effect of the scheme are as follows:
the plastic pipe is used for being connected with a user side plastic pipe, the steel pipe is used for being connected with a user side steel pipe, and the steel-plastic joint cap is used for connecting the plastic pipe and the steel pipe. The steel pipe is inserted into the steel-plastic joint cap, the plastic pipe is inserted between the steel pipe and the steel-plastic joint cap, the steel pipe, the steel-plastic joint cap and the plastic pipe are tightly pressed together by a hydraulic system, and the plastic pipe is tightly pressed on the steel pipe by the steel-plastic joint cap, so that the connection between the steel pipe and the plastic pipe can be realized. The steel joint end of the steel pipe is in threaded connection with the connecting sleeve, the user side steel pipe is directly aligned with the steel pipe in practical application, tapping is carried out on the user side steel pipe, and the connecting sleeve is screwed on the steel pipe and the user side steel pipe to achieve connection of the steel pipe and the user side steel pipe. The plastic pipe is connected with the plastic pipe of the user end through hot melting, so that the connection of the plastic pipe of the user end and the steel pipe of the user end can be realized.
Adapter sleeve threaded connection utilizes adapter sleeve to connect steel pipe and user end steel pipe on the steel pipe in this scheme, need not artifical at the scene dynamic welding during actual assembly, convenient operation, assembly efficiency is high. Therefore, the welding apparatus does not need to be carried manually, and the amount of manual labor is reduced.
Further, an anticorrosive coating is arranged on the outer wall of the steel pipe. The anticorrosive coating is used for giving steel pipe anticorrosion, improves its life.
Further, the anticorrosive coating is a 3PE anticorrosive coating. Compared with the prior art in which paint is adopted for corrosion prevention, the 3PE anticorrosive coating has better anticorrosive performance and is not easy to fall off, so that the anticorrosive effect is better, and the service life of the steel pipe is longer.
Further, the middle part of the inner wall of the steel-plastic joint cap is provided with a plurality of connecting grooves, and the plastic joint end of the steel pipe is provided with a plurality of connecting parts matched with the connecting grooves. The plastic pipe is clamped in the connecting groove through the connecting part, so that the connecting stability of the plastic pipe and the steel pipe can be improved, and the sealing property in the pipe is improved.
Further, the connecting portion is a truncated cone-shaped connecting ring, the small-diameter end of the connecting ring faces the free end of the steel pipe, the connecting ring is sequentially arranged, and the connecting groove is a truncated cone-shaped connecting groove matched with the connecting ring. During actual application, the steel pipe is pressed in from the large-diameter end of the connecting groove, and compared with a common circular connecting groove, the steel pipe and the plastic pipe can be more conveniently and smoothly pressed in the steel-plastic joint cap by adopting the frustum-shaped connecting groove and the connecting part.
Furthermore, one end of the steel-plastic joint cap connected with the steel pipe is communicated with a conical hole, and the small-diameter end of the conical hole faces to the middle of the steel-plastic joint cap. Compare the tip and be the structure in straight hole, set up the circular cone hole in this scheme and be convenient for more with the steel pipe impress in the steel-plastic joint cap at steel-plastic joint cap tip.
Furthermore, a clamping hole is formed in one end, connected with the plastic pipe, of the steel-plastic joint cap, and the diameter of the clamping hole is smaller than that of the middle of the steel-plastic joint cap. So set up and to utilize the inside chucking plastic tubing of chucking hole at steel plastic joint cap tip, further improved the connection stability of plastic tubing and steel plastic joint cap.
Furthermore, an annular clamping groove is formed in the inner edge of the steel connecting end. During actual use, the sealing ring is clamped in the clamping groove, and during connection, the sealing ring is clamped between the steel connection end and the user end steel pipe, so that the sealing performance of the connection position can be improved.
Furthermore, a limiting mechanism is arranged on the steel connecting end. The limiting mechanism is used for limiting the position of the connecting sleeve and preventing the connecting sleeve from accidentally rotating and falling off from the steel connecting end.
Further, an annular groove is formed in the steel connecting end, the annular groove is formed along threads on the steel connecting end, a rubber ring is arranged in the annular groove, an annular limiting ring is connected to the outer edge of the rubber ring, the outer edge of the limiting ring is located outside the steel connecting end in a free state, and the outer edge of the limiting ring can be located in the annular groove when the rubber ring is compressed to a limiting state.
The limiting ring is jacked up by the rubber ring in a free state, and the outer edge of the limiting ring is located outside the steel connecting end, so that the connecting sleeve can be limited, and the phenomenon that the connecting sleeve accidentally rotates and falls off from the steel pipe to cause part loss is avoided. When the connecting sleeve is screwed to the position of the limiting ring during connection, the limiting ring can be pressed into the annular groove by the connecting sleeve due to the fact that the bottom of the limiting ring is supported by the rubber ring which has elasticity, and the rotation of the connecting sleeve is not affected. In addition, after the spacing collar is pressed in, the deformation restoring force of the rubber collar can outwards push the spacing collar to enable the spacing collar to tightly abut against the inner wall of the connecting sleeve, and therefore the connecting stability of the connecting sleeve and the steel pipe can be improved.
Drawings
Fig. 1 is a longitudinal sectional view of a plastic pipe according to a first embodiment of the present invention;
fig. 2 is a longitudinal sectional view of a steel-plastic joint cap according to an embodiment of the present invention;
FIG. 3 is a longitudinal sectional view of a steel pipe according to a first embodiment of the present invention;
fig. 4 is a longitudinal sectional view of a connecting sleeve in the first embodiment of the present invention;
fig. 5 is a schematic structural diagram of a first embodiment of the present invention;
FIG. 6 is a partial longitudinal cross-sectional view of a steel pipe according to a second embodiment of the present invention;
fig. 7 is a partial longitudinal sectional view of a steel pipe in the third embodiment of the present invention.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the plastic pipe comprises a plastic pipe 1, a clamping hole 2, a connecting groove 3, a steel-plastic joint cap 4, a conical hole 5, a connecting ring 6, an anticorrosive layer 7, a steel pipe 8, a steel connecting end 9, a connecting sleeve 10, a limiting ring 11, a clamping groove 12 and a rubber ring 13.
Example one
As shown in fig. 1-5, the quick-assembly threaded maintenance-free steel-plastic adapter includes a plastic pipe 1, a steel pipe 8, a connection sleeve 10 and a steel-plastic adapter cap 4, in this embodiment, the plastic pipe 1 is a PE pipe. The plastic pipe 1 and the steel pipe 8 are connected through a steel plastic joint cap 4 shown in fig. 2, the left end of the steel plastic joint cap 4 is connected with the plastic pipe 1, and the right end is connected with the steel pipe 8. As can be seen from fig. 3, the left end of the steel pipe 8 is a plastic connection end, the right end is a steel connection end 9, and the steel connection end 9 is connected with a connection sleeve 10 shown in fig. 4 through a screw thread. In practical application, the left end of the steel pipe 8 is inserted into the steel-plastic joint cap 4 from the right end of the steel-plastic joint cap 4, the plastic pipe 1 is inserted into the steel-plastic joint cap 4 from the left end of the steel-plastic joint cap 4 and is positioned between the steel-plastic joint cap 4 and the steel pipe 8, and the three are tightly pressed together by a hydraulic system. The whole of the embodiment is shown in fig. 5 after the components are connected.
As shown in fig. 3, an anticorrosive coating 7 is fused on the outer wall of the steel pipe 8, and in this embodiment, the anticorrosive coating 7 is a 3PE anticorrosive coating. It can be known from fig. 2 that, a plurality of connecting grooves 3 are provided in the middle of the inner wall of the steel-plastic joint cap 4, the number of the connecting grooves in this embodiment is three, and the plastic joint end of the steel pipe 8 is provided with a plurality of connecting portions cooperating with the connecting grooves 3. In this embodiment, the connecting portion is a truncated cone-shaped connecting ring 6 integrally formed at the left end of the steel pipe 8, the small diameter end of the connecting ring 6 faces the left end of the steel pipe 8, and the connecting ring 6 is sequentially disposed. Specifically, the connecting groove 3 is a truncated cone-shaped connecting groove 3 which is matched with the connecting ring 6. One end (right end) of the steel-plastic joint cap 4 connected with the steel pipe 8 is communicated with a conical hole 5, and the small-diameter end of the conical hole 5 faces to the middle of the steel-plastic joint cap 4. One end (left end) of the steel-plastic joint cap 4 connected with the plastic pipe 1 is communicated with a clamping hole 2, and the diameter of the clamping hole 2 is smaller than that of the middle part of the steel-plastic joint cap 4.
The specific implementation process is as follows:
when the connecting device is used, the user side plastic pipe is connected with the plastic pipe 1 in the embodiment through hot melting, the user side steel pipe is aligned with the steel pipe 8 in the embodiment, then tapping is carried out on the user side steel pipe, the connecting sleeve 10 is screwed on the steel pipe 8 and the user side steel pipe, and then the connection of the adapter and the user side steel pipe can be achieved, and further the connection of the user side plastic pipe and the user side steel pipe is achieved.
This embodiment is threaded connection adapter sleeve 10 on steel pipe 8 in advance, need not artifical at the scene during actual assembly and moves the welding, compares the mode that will crossover sub and user end steel pipe welding together at the scene among the prior art, and direct rotatory adapter sleeve 10 can connect crossover sub and user end steel pipe in this scheme, convenient operation, and is efficient.
In this embodiment, the plastic pipe 1 is clamped tightly in the truncated cone-shaped connecting groove 3 by the truncated cone-shaped connecting ring 6, and the connection stability of the plastic pipe 1 and the steel pipe 8 can be improved. The left end of the steel-plastic joint cap 4 is provided with the clamping hole 2 which can clamp the plastic pipe 1 at the left end of the steel-plastic joint cap 4, thereby further improving the connection stability of the plastic pipe 1 and the steel pipe 8. In addition, 8 surfaces of steel pipes adopt 3PE anticorrosive coating 7, compare the anticorrosive mode of paint among the prior art, 3PE anticorrosive coating 7's corrosion resistance is superior to paint, and is difficult for dropping, therefore the anticorrosive effect of this embodiment is better.
Example two
As shown in fig. 6, the difference between the first embodiment and the second embodiment is that an annular slot 12 is formed on the inner edge of the steel connection end 9. During actual use, the sealing ring can be clamped in the clamping groove 12, and during connection, the sealing ring is clamped between the steel connecting end 9 and the user end steel pipe, so that the sealing performance of the connection position of the steel pipe 8 and the user end steel pipe can be improved.
EXAMPLE III
As shown in fig. 7, the difference between this embodiment and the first embodiment is that a limiting mechanism for limiting the position of the connecting sleeve 10 from accidentally falling is disposed on the steel joint end 9, and the limiting mechanism includes an annular groove formed on the steel joint end 9, and the annular groove is formed along a thread on the steel joint end 9. The rubber ring 13 is glued in the annular groove, the outer edge of the rubber ring 13 is glued with the annular limiting ring 11, the outer edge of the limiting ring 11 is located outside the steel connection end 9 in a free state, and the outer edge of the limiting ring 11 can be located in the annular groove when the rubber ring 13 is compressed to a limit state.
The limiting ring 11 is jacked up by the rubber ring 13 in a free state, and the outer edge of the limiting ring is positioned outside the steel connecting end 9, so that the connecting sleeve 10 can be limited, and the phenomenon that the connecting sleeve 10 falls off from the steel pipe 8 due to accidental rotation to cause part loss is avoided. When the connecting sleeve 10 is screwed to the position of the limiting ring 11 during connection, the connecting sleeve 10 can press the limiting ring 11 into the annular groove because the bottom of the limiting ring 11 is supported by the rubber ring 13 and the rubber ring 13 has elasticity, so that the rotation of the connecting sleeve 10 is not influenced. In addition, after the limiting ring 11 is pressed in, the deformation restoring force of the rubber ring 13 can push the limiting ring 11 outwards to enable the limiting ring 11 to abut against the inner wall of the connecting sleeve 10, so that the connecting stability of the connecting sleeve 10 and the steel pipe 8 can be improved.
The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (10)
1. Quick-assembling threaded maintenance-free steel-plastic adapter, including plastic tubing, steel pipe and steel-plastic joint cap, connect through steel-plastic joint cap between plastic tubing and the steel pipe, steel pipe one end is for moulding the end, the other end is for steel joint end, its characterized in that: the steel joint end is in threaded connection with a connecting sleeve.
2. The quick-assembly threaded maintenance-free steel-plastic adapter according to claim 1, characterized in that: and an anticorrosive layer is arranged on the outer wall of the steel pipe.
3. The quick-assembly threaded maintenance-free steel-plastic adapter according to claim 2, characterized in that: the anticorrosive coating is a 3PE anticorrosive coating.
4. The quick-assembly threaded maintenance-free steel-plastic adapter according to claim 3, characterized in that: the middle part of the inner wall of the steel-plastic joint cap is provided with a plurality of connecting grooves, and the plastic joint end of the steel pipe is provided with a plurality of connecting parts matched with the connecting grooves.
5. The quick-assembly threaded maintenance-free steel-plastic adapter according to claim 4, characterized in that: the connecting portion is a truncated cone-shaped connecting ring, the small-diameter end of the connecting ring faces the free end of the steel pipe, the connecting ring is sequentially arranged, and the connecting groove is a truncated cone-shaped connecting groove matched with the connecting ring.
6. The quick-assembly threaded maintenance-free steel-plastic adapter according to claim 5, characterized in that: one end of the steel-plastic joint cap connected with the steel pipe is communicated with a conical hole, and the small-diameter end of the conical hole faces to the middle of the steel-plastic joint cap.
7. The quick-assembly threaded maintenance-free steel-plastic adapter according to claim 6, characterized in that: one end of the steel-plastic joint cap connected with the plastic pipe is provided with a clamping hole, and the diameter of the clamping hole is smaller than that of the middle part of the steel-plastic joint cap.
8. The quick-assembly threaded maintenance-free steel-plastic adapter according to any one of claims 1 to 7, characterized in that: and an annular clamping groove is formed in the inner edge of the steel connecting end.
9. The quick-assembly threaded maintenance-free steel-plastic adapter according to claim 8, characterized in that: and a limiting mechanism is arranged on the steel connecting end.
10. The quick-assembly threaded maintenance-free steel-plastic adapter according to claim 9, characterized in that: the limiting mechanism comprises an annular groove arranged on the steel connecting end, the annular groove is formed along threads on the steel connecting end, a rubber ring is arranged in the annular groove, the outer edge of the rubber ring is connected with an annular limiting ring, the outer edge of the limiting ring is located outside the steel connecting end in a free state, and the outer edge of the limiting ring can be located in the annular groove when the rubber ring is compressed to a limiting state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922490341.2U CN212960384U (en) | 2019-12-31 | 2019-12-31 | Quick-assembly threaded maintenance-free steel-plastic adapter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922490341.2U CN212960384U (en) | 2019-12-31 | 2019-12-31 | Quick-assembly threaded maintenance-free steel-plastic adapter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212960384U true CN212960384U (en) | 2021-04-13 |
Family
ID=75340371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922490341.2U Active CN212960384U (en) | 2019-12-31 | 2019-12-31 | Quick-assembly threaded maintenance-free steel-plastic adapter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212960384U (en) |
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2019
- 2019-12-31 CN CN201922490341.2U patent/CN212960384U/en active Active
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