Perforated pipe

Abstract

The utility model discloses a perforated pipe which comprises an outer pipe and at least two inner pipes arranged in the outer pipe. The outer walls of the two adjacent inner pipes are connected with each other; the inner pipes divide the outer pipe into at least two groups of arc-shaped through holes which are communicated with each other, the multi-hole pipeline is simple in structure, the multi-hole pipeline can be used for conveying various different media due to the fact that the multi-hole pipeline is provided with the inner pipes and the formed arc-shaped through holes, and compared with an existing single-hole pipeline, the number of needed pipelines is reduced when the multi-different media are conveyed, so that the use cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipelines, and in particular relates to a porous pipe. Background Art

[0002] Porous tubes can be used in automotive air conditioning regenerators, welding machine guns and other scenarios. They can transport a variety of gas or liquid media in one tube. Porous tubes can not only save resources and reduce machine weight, but also the flow of various media can be adjusted separately during use, making it easy to use.

[0003] For example, a Chinese patent application numbered CN201320626253.0 discloses a porous tube comprising a pipe body; a main fluid channel is disposed in the pipe body; a plurality of pipes are disposed in the main fluid channel; the plurality of pipes each have a fluid channel; adjacent pipes of the plurality of pipes are connected by connecting plates; and a connecting plate is disposed between each pipe and the inner wall of the main fluid channel.

[0004] At present, the porous tube includes an outer tube and an inner tube, the inner tube is inside the outer tube, and the two are coaxially arranged. A plurality of supporting and isolating strips are arranged between the inner wall of the outer tube and the outer wall of the inner tube, and a plurality of arc-shaped through holes are formed between the outer tube and the inner tube. The manufacturing of the porous tube is to insert the smooth inner tube into the inner threaded outer tube or insert the outer warp tube into the smooth outer tube, and the two tubes are tightly connected by reducing the diameter of the outer tube. However, it is difficult to ensure the consistency of the teeth (supporting and isolating strips of the porous tube) of the inner threaded tube or the outer warp tube. This type of porous tube structure containing a single inner tube has defects, such as Figure 3 As shown, since the plurality of arc-shaped through holes respectively transport different media, the arc-shaped through holes themselves may be interconnected, resulting in the mixing of various media. Utility Model Content

[0005] In order to solve the above technical problems, the utility model retains the existing porous tube manufacturing process and adopts multiple interconnected arc-shaped through holes as conveying channels for the same medium, thereby avoiding the mixing of the conveying medium.

[0006] The utility model adopts the following technical solutions:

[0007] A porous tube, comprising an outer tube and an inner tube:

[0008] Wherein, at least two inner tubes are provided and placed inside the outer tube;

[0009] The outer walls of two adjacent inner tubes are connected to each other;

[0010] The inner tube divides the outer tube into at least two groups of interconnected arc-shaped through holes.

[0011] Furthermore, the outer wall of each inner tube is connected to the inner wall of the outer tube, and there are three inner tubes, which together with the arc-shaped through holes form a four-channel porous tube for medium transportation.

[0012] Furthermore, the outer wall of each inner tube is connected to the inner wall of the outer tube, and there are four inner tubes, which together with the arc-shaped through holes form a five-channel porous tube for medium transportation.

[0013] Furthermore, support bars extending in the axial direction are distributed on the inner wall of the outer tube.

[0014] Furthermore, the edge profile of the support bar cross section is in a corrugated shape.

[0015] Furthermore, the inner diameter, outer diameter and wall thickness of each inner tube are the same or different.

[0016] Furthermore, the central axes of the inner tube and the outer tube are parallel.

[0017] Furthermore, the inner tube is a threaded tube.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The utility model has a simple structure and can be used to transport a variety of different media due to the multiple inner tubes and the arc-shaped through holes formed. Compared with the existing single-hole pipeline, the number of pipelines required when transporting a variety of different media is reduced, thereby reducing the use cost.

[0020] Since the porous tube has multiple inner tubes serving as channels for various media respectively, the arc-shaped through holes between the inner and outer tubes are connected and serve as conveying channels for the same medium. While retaining the original manufacturing process, the mixing of the media when conveying multiple media at the same time is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural schematic diagram of a porous tube embodiment 1 of the utility model;

[0022] Figure 2 This is a structural schematic diagram of a second embodiment of a porous tube of the utility model;

[0023] Figure 3 It is a structural schematic diagram of an existing porous pipe;

[0024] Figure 4 This is a schematic diagram of the structure of the three-channel porous tube in the embodiment of the utility model when in use;

[0025] The reference numerals in the drawings of the specification include:

[0026] Outer tube 1, support bar 10, inner tube 2, arc-shaped through hole 3, special joint 4, first connection port 40, second connection port 41. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0028] Among them, the drawings are only used for exemplary explanations, and they only show schematic diagrams rather than actual drawings, and cannot be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do 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 may be omitted, and the same or similar reference numerals in the drawings of the embodiments of the utility model correspond to the same or similar parts; in the description of the utility model, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer" and the like appear, the directions or positional relationships indicated are based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, so the terms describing the positional relationship in the drawings are only used for exemplary explanations, and cannot be understood as limitations on this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0029] Embodiment 1:

[0030] like Figure 1 As shown, a porous tube of the utility model comprises an outer tube 1 and an inner tube 2, wherein the inner tube 2 is parallel to the central axis of the outer tube 1;

[0031] Among them, at least two inner tubes 2 are provided and placed in the outer tube 1. If the outer wall of the inner tube 2 or the inner wall of the outer tube 1 is not smooth, the inner tube 2 is in contact with the outer tube 1. The porous tube manufacturing process used in this embodiment uses a PE tube as the outer tube. The outer tube tip is pulled by a reducing die so that the outer tube and the inner tube are hot-melt bonded together. If the inner tube is an outer warped tube or a threaded tube, the outer wall of the inner tube is bonded to the inner wall of the outer tube at intervals. In addition to the above-mentioned connection methods, the inner tube and the outer tube can also be tightly connected together by welding, riveting, etc., or multiple connectors are used to connect the two together, and there is a gap between the connectors. The connectors can be welded, bonded or fixedly connected to the two by other methods. If the number of inner tubes 2 is three or four, the outer wall of each inner tube 2 is connected to the inner wall of the outer tube 1.

[0032] The outer walls of two adjacent inner tubes 2 may be connected to each other or not;

[0033] The inner tube 2 divides the outer tube 1 into at least two groups of interconnected arc-shaped through holes 3.

[0034] Specifically, there are three inner tubes 2, which together with the arc-shaped through holes 3 form a four-channel porous tube for medium transportation.

[0035] Due to the multiple inner tubes 2 and the formed arc-shaped through holes 3, it can be used to transport a variety of different media. Compared with the existing single-hole pipeline, the number of pipelines required for transporting a variety of different media is reduced, thereby reducing the cost of use.

[0036] Embodiment 2:

[0037] like Figure 2 As shown, a porous tube of the utility model comprises an outer tube 1 and an inner tube 2, wherein the inner tube 2 is parallel to the central axis of the outer tube 1;

[0038] There are at least two inner tubes 2, which are placed inside the outer tube 1;

[0039] The outer walls of two adjacent inner tubes 2 are connected to each other;

[0040] The inner tube 2 divides the outer tube 1 into at least two groups of interconnected arc-shaped through holes 3.

[0041] Specifically, there are four inner tubes 2, which together with the arc-shaped through holes 3 form a five-channel porous tube for medium transportation.

[0042] The difference between the second embodiment and the first embodiment is that the number of inner tubes 2 in the second embodiment is increased from three to four, and the channels for conveying the medium are increased while the diameter of the outer tube 1 remains unchanged, which makes the adaptability stronger. Of course, the number of inner tubes 2 can also be increased or decreased according to actual needs; for example, five or six inner tubes 2 can be provided to form a porous tube with a variety of channel numbers.

[0043] Among them, in addition, in the four inner tubes, that is, the five-channel porous tube, an inner tube is added in the center to become a six-channel porous tube. The newly added inner tube is only connected to the original four inner tubes, and the outer tube of this porous tube may not be connected to the inner tube.

[0044] Since the multiple inner tubes 2 are used as channels for various media respectively, the arc-shaped through holes 3 between the inner and outer tubes 1 are interconnected and serve as channels for the same medium. While retaining the original manufacturing process, mixing of the media when transporting multiple media at the same time is avoided.

[0045] In addition, the inner tube 2 in this embodiment can be made of one or more metal materials such as copper, aluminum, steel, or non-metal materials such as PE. The selection is made according to actual conditions without limitation.

[0046] Specifically, the inner diameter, outer diameter and wall thickness of each inner tube 2 may be completely the same, partially the same, or completely different.

[0047] The utility model also discloses a method for preparing the porous tube:

[0048] 1. Insert multiple inner tubes 2 into the outer tube 1;

[0049] 2. Using a sharpening machine to sharpen one end of the outer tube 1 that has been inserted into the plurality of inner tubes 2;

[0050] 3. Insert the tip of the outer tube 1 into the diameter reducing die, pull the tip, and reduce the inner diameter and outer diameter of the outer tube 1 through the die, so that multiple inner tubes 2 and outer tubes 1 are tightly connected to each other;

[0051] 4. Carry out fixed-distance cutting to produce porous pipes.

[0052] In addition, the inner tube 2 of the porous tube can be a plain tube, a threaded tube, a straight groove tube or an outer warped tube. The inner wall of the outer tube 1 is provided with support bars 10 extending axially, and the support bars 10 have a cross-sectional edge profile shape of a corrugated shape or other shapes.

[0053] like Figure 4 As shown, taking a three-channel porous tube formed by two inner tubes as an example, when using the porous tube to transport different liquid media, a special joint 4 is used to connect the porous tube. The special joint 4 also contains an inner tube and an outer tube that correspond to the porous tube. The special joint is provided with a first medium connection port 40 corresponding to the inner tube on the side, and a second connection port 41 for separately transporting the medium to the arc-shaped through hole is also provided. The channel between the outer tube and the inner tube is connected to the second connection port 41. Through the setting of the second connection port 41, the medium that needs to be transported separately is transported to the arc-shaped through hole of the porous tube. The corresponding inner tubes and outer tubes in the porous tube and the special joint need to be well sealed to avoid leakage of the medium. For the four-channel and five-channel multi-hole channels, only the corresponding special joints need to be used.

Claims

1. A porous tube, characterized in that: include: Outer tube (1); At least two inner tubes (2) are arranged inside the outer tube (1); The inner tube (2) divides the outer tube (1) into at least two groups of interconnected arc-shaped through holes (3); At least two groups of connected arc-shaped through holes (3) serve as conveying channels for the same medium.

2. A porous tube as claimed in claim 1, characterized in that: The outer wall of each inner tube (2) is connected to the inner wall of the outer tube (1), and there are three inner tubes (2), which together with the arc-shaped through holes (3) form a four-channel porous tube for medium transportation.

3. A porous tube as claimed in claim 1, characterized in that: The outer wall of each inner tube (2) is connected to the inner wall of the outer tube (1), and there are four inner tubes (2), which together with the arc-shaped through holes (3) form a five-channel porous tube for medium transportation.

4. A porous tube as claimed in claim 1, 2 or 3, characterized in that: The inner wall of the outer tube (1) is provided with support strips (10) extending in the axial direction.

5. A porous tube as claimed in claim 4, characterized in that: The support bar (10) has a cross-sectional edge profile in a corrugated shape.

6. A porous tube as claimed in claim 1 or 2 or 3 or 5, characterized in that: The inner diameter, outer diameter and wall thickness of each inner tube (2) are the same or different.

7. A porous tube as claimed in claim 1 or 2 or 3 or 5, characterized in that: The central axes of the inner tube (2) and the outer tube (1) are parallel.

8. A porous tube as claimed in claim 1 or 2 or 3 or 5, characterized in that: The inner tube (2) is a threaded tube.

9. A porous tube as claimed in claim 1 or 2 or 3 or 5, characterized in that: The inner tube (2) is a straight groove tube.

10. A porous tube as claimed in claim 1 or 2 or 3 or 5, characterized in that: The inner tube (2) is an outer warped tube.

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