CN220250791U - Quick-connection welding-free inner and outer corrugated pipe and heat exchanger - Google Patents
Quick-connection welding-free inner and outer corrugated pipe and heat exchanger Download PDFInfo
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- CN220250791U CN220250791U CN202321897765.0U CN202321897765U CN220250791U CN 220250791 U CN220250791 U CN 220250791U CN 202321897765 U CN202321897765 U CN 202321897765U CN 220250791 U CN220250791 U CN 220250791U
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- corrugated pipe
- quick
- joint
- concave surface
- pipe
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- 238000007789 sealing Methods 0.000 claims abstract description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 238000009434 installation Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
The utility model relates to a quick-connection welding-free inner and outer corrugated pipe and a heat exchanger, which comprise a joint, wherein an outer threaded part is arranged on the outer side wall of the joint, and an inner inclined concave surface is arranged at one port corresponding to the outer threaded part; the sealing piece is sleeved on the inner corrugated pipe, the front surface of the sealing piece is provided with a round table part propped against the inner inclined concave surface, and the back surface of the sealing piece is provided with a flat pressed surface; the hexagonal nut is fixedly connected to the joint through the matching of the internal thread part and the external thread part, so that the internal pressure surface is pressed against the pressed surface, and the round table part and the internal inclined concave surface are mutually pressed; the corrugated pipe is simpler in structure, has more ideal sealing effect and longer service life, and is provided with the external threaded pipe, so that the corrugated pipe can be conveniently connected with other pipelines.
Description
Technical Field
The utility model relates to the field of connecting pipelines, in particular to a quick-connection welding-free inner and outer corrugated pipe and a heat exchanger.
Background
The double-layer heat exchange tube comprises an outer tube and an inner tube arranged inside the outer tube, wherein a first medium channel is arranged inside the inner tube, a second medium channel is arranged between the outer wall of the inner tube and the inner wall of the outer tube, when the first medium channel and the second medium channel circulate mediums with different temperatures respectively, heat exchange can be performed between the two mediums, the double-layer heat exchange tube is widely applied in various civil and industrial heat exchange devices such as a water dispenser, an evaporation concentrator and the like, is a core component for heat exchange, and the prior art disclosed by the double-layer heat exchange tube is introduced as follows:
the application number of the Chinese patent literature is as follows: the utility model provides a "heat exchange double-layer pipe that sealing connection is compacter and mounting fixture thereof" of ZL 201920137946.0 shows, wherein the heat exchange double-layer pipe of public record, including the outer tube, the inner tube, the sealing washer, the connecting cylinder, place the sealing washer on the indent position during the assembly, press the sealing washer to solid on the outer tube with the connecting cylinder utilization screw-thread fit connection, finally be fixed connecting cylinder and outer tube connection through modes such as welding, the connecting cylinder of this structure is because the inside and outside wall is covered with the screw thread, therefore the connecting cylinder is in the fastening process, the special assembly tool of mounting cylinder is screwed up the connecting cylinder and is fixed, make the installation process of heat exchange double-layer pipe become complicated, and cause the sealing washer to be difficult to dismantle after ageing and change, consequently, the applicant provides a novel scheme that can replace above-mentioned prior art through improvement and perfect, supply consumer to select to use.
Disclosure of Invention
The utility model aims to solve the existing problems and provide the quick-connection welding-free inner and outer corrugated pipes and the heat exchanger which are simple and reasonable in structure, and have the main effects of simpler corrugated pipe structure, more ideal sealing effect and longer service life.
Quick-connect welding-free inner and outer corrugated pipes, comprising:
the outer side wall of the connector is provided with an external thread part, and an inner inclined concave surface is arranged at one port corresponding to the external thread part;
the outer corrugated pipe is connected to the other port of the joint, and the inner corrugated pipe penetrates through the joint and the outer corrugated pipe;
the sealing piece is sleeved on the inner corrugated pipe, the front surface of the sealing piece is provided with a round platform part propped against the inner inclined concave surface, and the back surface of the sealing piece is provided with a flat pressed surface;
the hexagonal nut, hexagonal nut's outer port integral connection has the external screw thread pipe, the inner of external screw thread pipe is equipped with interior pressure face, hexagonal nut is through its internal screw thread portion and external screw thread portion cooperation fastening connection on the joint, makes interior pressure face press on the pressurized face, realizes that round platform portion and interior oblique concave surface compress tightly each other.
The aim of the utility model can be also solved by adopting the following technical measures:
as a more specific scheme, the external thread pipe and the hexagonal nut are concentrically arranged, and an internal pressure surface of a step structure is formed by the radial dislocation of the external thread pipe and the inside and outside of the hexagonal nut.
As a further proposal, the diameter of the outer end opening of the inner inclined concave surface is larger than that of the inner end opening.
As a further scheme, the included angle between the inclined surface of the round platform part and the central axis is smaller than or equal to the included angle between the inner inclined concave surface and the central axis.
As a further proposal, the circumference of the sealing piece is also provided with a sealing pressure ring which is tightly clamped between the inner pressure surface and the port surface of the joint, and the outer side surface of the sealing pressure ring is abutted or abutted against the circumference of the inner pressure surface.
As a further scheme, the connector is a three-way connector, the three-way connector is provided with three ports, one port of the three-way connector is provided with an inner inclined concave surface, two ports of the three-way connector are connected with an outer corrugated pipe, and one port of the three-way connector is coaxially arranged opposite to the two ports of the three-way connector.
As a further aspect, the joint is a 4-tap joint and the hex nut is a 4-split hex nut.
The heat exchanger comprises the quick-connection welding-free inner corrugated pipe and the quick-connection welding-free outer corrugated pipe, wherein three-way connectors are arranged at two ends of the outer corrugated pipe, two ports of the two three-way connectors are respectively welded with two ends of the outer corrugated pipe, and three ports of the two three-way connectors are respectively an outer corrugated pipe water inlet and an outer corrugated pipe water outlet; the outer of one port of the two three-way connectors is connected with a hexagonal nut, and the inner cavities of the external threaded pipes of the two hexagonal nuts are respectively an inner bellows water outlet and an inner bellows water inlet.
As a further scheme, external threads are arranged outside the water inlet of the external corrugated pipe and the water outlet of the external corrugated pipe.
The beneficial effects of the utility model are as follows
The quick-connection welding-free inner and outer corrugated pipes and the heat exchanger are simpler in structure, the inner pressure surfaces of the hexagonal nuts are pressed on the pressure surfaces of the sealing pieces in a face-to-face mode, the excessive concentration of stress of the sealing pieces is avoided, the service life of the sealing pieces can be prolonged, the quick-connection welding-free inner and outer corrugated pipes and the heat exchanger are more ideal in sealing effect and longer in service life, compared with the prior art, the quick-connection welding-free inner and outer corrugated pipes and the heat exchanger do not need special matched connecting tools to fasten the hexagonal nuts, the hexagonal nuts with the external threaded pipes are convenient for connecting the corrugated pipes with other specifications or prolonging the corrugated pipes, and the corrugated pipes of the quick-connection welding-free inner corrugated pipes and the heat exchanger are more flexible in use, wider in application range and higher in practicability.
Drawings
Fig. 1 is a schematic view of a cross-sectional exploded structure of the present utility model.
Fig. 2 is a schematic exploded view of the present utility model.
FIG. 3 is a schematic cross-sectional view of a seal of the present utility model.
Fig. 4 is a schematic view of a hexagonal nut and externally threaded pipe section and a partially enlarged structure of the present utility model.
Fig. 5 is a schematic diagram of the included angle between the truncated cone portion and the inward inclined concave surface according to the present utility model.
Fig. 6 is a schematic view of a heat exchanger according to the present utility model.
Detailed Description
The utility model will be further described with reference to the drawings and examples.
As shown in fig. 1 to 5, the quick-connect welding-free inner and outer bellows includes:
the connector 1, the outer side wall of the connector 1 is provided with an external thread part 101, and one port corresponding to the external thread part 101 is provided with an inner inclined concave surface 102;
the outer corrugated pipe 2 is connected to the other port of the joint 1, and the inner corrugated pipe 3 penetrates through the joint 1 and the outer corrugated pipe 2;
the sealing element 4 is sleeved on the inner corrugated pipe 3, the front surface of the sealing element 4 is provided with a round platform part 401 propped against the inner inclined concave surface 102, and the back surface of the sealing element 4 is provided with a flat pressed surface 402;
the hexagonal nut 5, the outer port of hexagonal nut 5 is connected with external screw thread pipe 6 as a whole, the inner of external screw thread pipe 6 is equipped with interior pressure face 601, hexagonal nut 5 is through its internal screw thread portion 501 and external screw thread portion 101 cooperation fastening connection on joint 1, makes interior pressure face 601 press and supports on the pressurized face 402, realizes that round platform portion 401 and interior oblique concave surface 102 compress tightly each other.
This kind of bellows structure is simpler, compress tightly face to face on the pressurized face 402 of sealing member 4 through the interior pressure face of hexagon nut 5, avoid the excessive concentration of stress of sealing member 4, can prolong sealing member 4's life, and have more ideal sealed effect, life is longer, compare in prior art when the installation, do not need the connection tool of peculiar matching to fasten hexagon nut 5, and the hexagon nut 5 that has external screw thread pipe 6 makes things convenient for the bellows to connect the pipeline of other specifications or extension bellows, more nimble when the bellows of this structure is used, application scope is wider, the practicality is stronger.
And can use manual twisting to move the hexagonal nut when hexagonal nut 5 begins the installation, compare in prior art, can improve the assembly efficiency of hexagonal nut 5, only consolidate at instruments such as installation later stage rethread ordinary spanner and screw up to appear sealing member 4 ageing after later on, make things convenient for maintainer to dismantle the change, compare in prior art and need welded fastening, convenient maintenance more.
The external threaded pipe 6 and the hexagonal nut 5 are concentrically arranged, and an internal pressure surface 601 of a step structure is formed by the radial dislocation of the external threaded pipe 6 and the inside and outside of the hexagonal nut 5; the externally threaded pipe 6 and the hexagonal nut 5 with the structure can form a conventional hexagonal nut joint with inner and outer teeth, and even the existing spare and accessory parts can be purchased for assembly during production.
The diameter of the opening at the outer end of the inner inclined concave surface 102 is larger than that of the opening at the inner end; the inner inclined concave surface 102 of the structure can form inclined plane matching with the sealing element 4, so that the sealing effect is ensured.
In this embodiment, it is preferable that the included angle α between the inclined surface of the truncated cone 401 and the central axis is smaller than the included angle β between the inner inclined concave surface 102 and the central axis, which can ensure that when the truncated cone 401 is compressed, at least a portion of the surface of the truncated cone is elastically pressed against the inner inclined concave surface 102, so as to ensure tightness, while in other embodiments, the included angle between the inclined surface of the truncated cone 401 and the central axis may be equal to the included angle between the inner inclined concave surface 102 and the central axis, so as to ensure tightness by using slope fit.
The circumference of the sealing element 4 is also provided with a sealing pressure ring 403, the sealing pressure ring 403 is tightly clamped between the internal pressure surface and the port surface of the joint 1, and the outer side surface of the sealing pressure ring 403 is abutted or abutted against the circumference 602 of the internal pressure surface 601; the sealing member 4 having this structure can increase the sealing area and improve the sealing property of the sealing member 4.
In this embodiment, the connector 1 is a three-way connector, which is provided with three ports, one port of the three-way connector is provided with an inner inclined concave surface 102, two ports of the three-way connector are connected with the outer corrugated pipe 2, one port of the three-way connector is coaxially opposite to the two ports of the three-way connector, and in other embodiments, the connector 1 may be a straight pipe.
The joint 1 is a 4-tap joint, and the hexagonal nut 5 is a 4-split hexagonal nut; in other embodiments, the joint 1 may be a 6-tap joint, and the hexagonal nut 5 may be a 6-split hexagonal nut.
A heat exchanger, as shown in figure 6, includes the above-mentioned quick-connect welding-free inner and outer corrugated pipes, two ends of the outer corrugated pipe 2 are equipped with three-way joints, two ports of two three-way joints are welded with two ends of the outer corrugated pipe 2 respectively, three ports of two three-way joints are outer corrugated pipe water inlet 103 and outer corrugated pipe water outlet 104 respectively; the outer side of one port of the two three-way connectors is connected with a hexagonal nut 5, and the inner cavities of the external threaded pipes 6 of the two hexagonal nuts 5 are respectively provided with an inner bellows water outlet 603 and an inner bellows water inlet 604;
the heat exchanger is mainly applied to a water dispenser with a warm boiled water function, an inner bellows water inlet 604 is connected with boiled water 7, and an inner bellows water outlet 603 is connected with a warm boiled water storage tank 8; the water inlet 103 of the external corrugated pipe is communicated with the normal-temperature water purifying pipeline 9, and the water outlet 104 of the external corrugated pipe is connected with the boiled water heating container 10.
External threads 105 are arranged outside the external corrugated pipe water inlet 103 and the external corrugated pipe water outlet 104.
The foregoing is a preferred embodiment of the utility model showing and describing the general principles, features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the foregoing embodiments, which have been described in the foregoing embodiments and description merely illustrates the principles of the utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model as defined in the appended claims and their equivalents.
Claims (9)
1. Quick-connection welding-free inner corrugated pipe and outer corrugated pipe are characterized by comprising:
the connector (1), the outer side wall of the connector (1) is provided with an external thread part (101), and one port corresponding to the external thread part (101) is provided with an inward inclined concave surface (102);
the outer corrugated pipe (2) is connected to the other port of the joint (1), and the inner corrugated pipe (3) is arranged in the joint (1) and the outer corrugated pipe (2) in a penetrating way;
the sealing piece (4) is sleeved on the inner corrugated pipe (3), the front surface of the sealing piece (4) is provided with a round platform part (401) propped against the inner inclined concave surface (102), and the back surface of the sealing piece (4) is provided with a flat compression surface (402);
the hexagonal nut (5), the outer port body coupling of hexagonal nut (5) has outer screwed pipe (6), the inner of outer screwed pipe (6) is equipped with interior pressure face (601), hexagonal nut (5) are through its internal thread portion (501) and external thread portion (101) cooperation fastening connection on joint (1), make interior pressure face (601) press and support on pressure face (402), realize round platform portion (401) and interior oblique concave surface (102) compress tightly each other.
2. The quick-connection welding-free inner and outer corrugated pipe according to claim 1, wherein the outer threaded pipe (6) and the hexagonal nut (5) are concentrically arranged, and an inner pressure surface (601) with a step structure is formed by radially displacing the outer threaded pipe (6) and the hexagonal nut (5) from each other.
3. The quick connect solderless inner and outer bellows of claim 1, wherein the outer end opening diameter of the inner beveled concave surface (102) is greater than the inner end opening diameter.
4. The quick-connect solderless inner and outer bellows of claim 1, wherein an angle between the inclined surface of the truncated cone portion (401) and the central axis is smaller than or equal to an angle between the inner inclined concave surface (102) and the central axis.
5. The quick-connection welding-free inner and outer corrugated pipe according to claim 1, wherein the sealing piece (4) is further provided with a sealing pressing ring (403) on the periphery side, the sealing pressing ring (403) is tightly clamped between the inner pressure surface and the port surface of the joint (1), and the outer side surface of the sealing pressing ring (403) is abutted or abutted against the periphery side (602) of the inner pressure surface (601).
6. The quick-connect solderless inner and outer corrugated pipe of claim 1, wherein the connector (1) is a three-way connector, the three-way connector is provided with three ports, one port of the three-way connector is provided with an inner inclined concave surface (102), two ports of the three-way connector are connected with the outer corrugated pipe (2), and one port of the three-way connector is coaxially arranged opposite to the two ports of the three-way connector.
7. The quick-connect weld-free inner and outer bellows of claim 1, wherein the joint (1) is a 4-tap and the hex nut (5) is a 4-split hex nut.
8. A heat exchanger, characterized in that: the quick-connection welding-free inner and outer corrugated pipes comprise the quick-connection welding-free inner and outer corrugated pipes as claimed in claim 6, wherein three-way connectors are arranged at two ends of the outer corrugated pipe (2), two ports of the two three-way connectors are respectively welded with two ends of the outer corrugated pipe (2), and three ports of the two three-way connectors are respectively an outer corrugated pipe water inlet (103) and an outer corrugated pipe water outlet (104); the outer side of one port of the two three-way connectors is connected with a hexagonal nut (5), and the inner cavities of the external threaded pipes (6) of the two hexagonal nuts (5) are respectively an inner bellows water outlet (603) and an inner bellows water inlet (604).
9. The heat exchanger of claim 8, wherein: external threads (105) are arranged outside the external corrugated pipe water inlet (103) and the external corrugated pipe water outlet (104).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321897765.0U CN220250791U (en) | 2023-07-18 | 2023-07-18 | Quick-connection welding-free inner and outer corrugated pipe and heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321897765.0U CN220250791U (en) | 2023-07-18 | 2023-07-18 | Quick-connection welding-free inner and outer corrugated pipe and heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220250791U true CN220250791U (en) | 2023-12-26 |
Family
ID=89226375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321897765.0U Active CN220250791U (en) | 2023-07-18 | 2023-07-18 | Quick-connection welding-free inner and outer corrugated pipe and heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220250791U (en) |
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2023
- 2023-07-18 CN CN202321897765.0U patent/CN220250791U/en active Active
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