Aluminum alloy plastic-lined prefabricated heat preservation composite pipe

Abstract

The utility model relates to the technical field of composite pipes, and provides an aluminum alloy plastic-lined prefabricated heat preservation composite pipe which comprises a first connecting ring, an inner pipe body is fixed to the middle of one side wall of the first connecting ring, a filling grating is fixedly connected to the outer side of the inner pipe body in a sleeved mode, and a heat preservation foam block is movably connected to the inner side of the filling grating in an inserted mode. Inserting grooves are symmetrically formed in one side wall of the first connecting ring, arc-shaped protective shells are movably inserted into the inner sides of the inserting grooves, the inner walls of the arc-shaped protective shells are attached to the filling grating, inserting plates are fixed to one side wall of each arc-shaped protective shell, and the inserting plates are movably inserted into the inner sides of the inserting grooves; according to the utility model, a plurality of thermal insulation foam blocks are respectively filled in the filling grid and are protected by the arc-shaped protective shell, any one thermal insulation foam block can be taken out for replacement only by opening the arc-shaped protective shell, and after long-time use, the performance of the thermal insulation foam block is reduced, and the thermal insulation foam block can be conveniently replaced, so that the thermal insulation performance is continued; the pipeline service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of composite pipes, in particular to an aluminum alloy lined plastic prefabricated thermal insulation composite pipe. Background Technique

[0002] The aluminum alloy lined plastic composite pipe is a new type of practical pipeline developed on the basis of traditional plastic pipes, which combines the physical and chemical advantages of metal and plastic materials. It has the advantages of light weight, 100% oxygen barrier, anti-ultraviolet irradiation, cleanliness, easy installation, strong sealing performance, etc. in the application of water supply pipes. In indoor surface installation, it solves the defects of plastic pipes such as bending after thermal expansion and contraction, fear of impact, and easy aging.

[0003] The aluminum alloy lined plastic prefabricated thermal insulation composite pipe usually prefabricates and fills thermal insulation foam and other materials between the aluminum alloy layer and the plastic layer of the pipe body. This design makes it impossible to take out the internal thermal insulation material once the composite pipe is manufactured. After long-term use of the composite pipe, the internal thermal insulation material gradually ages, and the thermal insulation performance may decrease, so the entire pipeline must be replaced to continue using, resulting in a short service life.

[0004] Therefore, there is a need for an aluminum alloy lined plastic prefabricated thermal insulation composite pipe that can replace the thermal insulation material, ensure continuous thermal insulation performance, and extend the service life. Content of the Utility Model

[0005] In order to solve the above problems, the utility model proposes an aluminum alloy lined plastic prefabricated thermal insulation composite pipe, which has the advantages of convenient replacement of thermal insulation materials and long service life.

[0006] To achieve the above purpose, the utility model proposes the following specific solutions:

[0007] An aluminum alloy lined plastic prefabricated thermal insulation composite pipe, comprising a first connecting ring, a middle part of one side wall of the first connecting ring is fixed with an inner pipe body, an outer side of the inner pipe body is fixedly sleeved with a filling grid, one end of the filling grid is fixed on the side wall of the first connecting ring, thermal insulation foam blocks are movably inserted inside the filling grid, one end of the inner pipe body is fixed with a second connecting ring, one side wall of the second connecting ring is fixedly connected with the filling grid, inserting grooves are symmetrically arranged on one side wall of the first connecting ring, the inserting grooves are located outside the filling grid, arc-shaped protective shells are movably inserted inside the inserting grooves, the arc-shaped protective shells are located between the first connecting ring and the second connecting ring, an inner wall of the arc-shaped protective shell is attached to the filling grid, a plugging board is fixed on one side wall of the arc-shaped protective shell, the plugging board is movably inserted inside the inserting groove, fixing grooves are symmetrically arranged on an outer wall of the arc-shaped protective shell, a fixing ring is movably sleeved outside the arc-shaped protective shell, receiving grooves are symmetrically arranged on an inner wall of the fixing ring, a threaded hole is arranged in the middle of one side inner wall of the receiving groove, an extrusion screw is threadedly connected inside the threaded hole, one end of the extrusion screw is fixed with an extrusion disc, and the extrusion disc is movably inserted inside the fixing groove.

[0008] As a preferred technical solution of the aluminum alloy lined plastic prefabricated thermal insulation composite pipe of the present utility model, connecting grooves are symmetrically arranged on an outer wall of the second connecting ring, and a threaded groove is arranged in the middle of one side inner wall of the connecting groove.

[0009] As a preferred technical solution of the aluminum alloy lined plastic prefabricated thermal insulation composite pipe of the present utility model, a connecting board is fixed on the other side wall of the arc-shaped protective shell, the connecting board is movably inserted inside the connecting groove, a connecting hole is arranged at an edge of one side wall of the connecting board, a connecting screw is movably inserted inside the connecting hole, and a lower end of the connecting screw is threadedly connected inside the threaded groove.

[0010] As a preferred technical solution of the aluminum alloy lined plastic prefabricated thermal insulation composite pipe of the present utility model, an inner threaded pipe is fixed in the middle of the other side wall of the first connecting ring.

[0011] As a preferred technical solution of the aluminum alloy lined plastic prefabricated thermal insulation composite pipe of the present utility model, an outer threaded pipe is fixed in the middle of one side wall of the second connecting ring, and the size of the outer threaded pipe is adapted to the size of the inner threaded pipe.

[0012] As a preferred technical solution of the aluminum alloy lined plastic prefabricated thermal insulation composite pipe of the present utility model, a sealing ring is fixed at one end of the outer threaded pipe.

[0013] As a preferred technical solution of the aluminum alloy lined plastic prefabricated thermal insulation composite pipe of the present utility model, a plurality of the thermal insulation foam blocks are provided, and the sealing ring is made of a flexible material.

[0014] As a preferred technical solution of the aluminum alloy lined plastic pre-insulated composite pipe of the present utility model, the arc-shaped protective shell is made of aluminum alloy, and the inner pipe body is made of heat-resistant polyethylene.

[0015] Compared with the prior art, the present utility model has the following beneficial effects:

[0016] In the present utility model, the thermal insulation foam block is filled inside the filling grid and protected by the arc-shaped protective shell. The fixing ring is sleeved outside the two arc-shaped protective shells, which can make the two arc-shaped protective shells fit more tightly together to ensure their strength. By turning the extrusion screw, the extrusion plate is moved out of the inner side of the fixing groove on the outer wall of the arc-shaped protective shell, and then the fixing ring can be moved and separated from the arc-shaped protective shell. Then, by unscrewing the connecting screw, the arc-shaped protective shell can be removed to replace the thermal insulation foam block. This solution can replace the brand-new thermal insulation foam block when the thermal insulation effect of the thermal insulation foam block decreases, so as to extend the service life of the composite pipe, avoid completely replacing the composite pipe, and reduce the use cost. Description of the Drawings

[0017] In order to better describe the technical solution of the present utility model in detail, the present invention will be further described below in conjunction with the drawings and embodiments.

[0018] Figure 1 It is a three-dimensional view of the overall structure provided by the present utility model;

[0019] Figure 2 It is a three-dimensional sectional view of the present utility model;

[0020] Figure 3 It is a three-dimensional view of the inner pipe body and the filling grid of the present utility model;

[0021] Figure 4 For the present utility model Figure 2 The enlarged schematic view at A in;

[0022] Figure 5 For the present utility model Figure 2 The enlarged schematic view at B in;

[0023] Figure 6 For the present utility model Figure 2 The enlarged schematic view at C in.

[0024] In the figure: 1. First connection ring; 11. Inner threaded pipe; 12. Insertion slot; 2. Second connection ring; 21. Outer threaded pipe; 211. Sealing ring; 22. Connection slot; 221. Threaded groove; 3. Arc-shaped protective shell; 31. Insertion plate; 32. Fixing groove; 33. Connection plate; 331. Connection hole; 34. Connection screw; 4. Fixing ring; 41. Receiving groove; 411. Threaded hole; 42. Extrusion screw; 421. Extrusion plate; 5. Inner pipe body; 51. Filling grid; 52. Thermal insulation foam block. Detailed implementation mode

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model. Embodiment

[0026] Please refer to Figures 1-6 As shown, the present utility model provides the following technical solutions: an aluminum alloy lined plastic pre-insulated composite pipe, including a first connection ring 1. In the middle of one side wall of the first connection ring 1, an inner pipe body 5 is fixed. The inner pipe body 5 is made of heat-resistant polyethylene and can transport liquids with relatively high temperatures. One end of the inner pipe body 5 is fixed with a second connection ring 2. The first connection ring 1 and the second connection ring 2 can not only be used to fix the arc-shaped protective shell 3, but also facilitate the connection between multiple composite pipes, improving the overall practicability.

[0027] Refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 And Figure 6As shown, specifically, a filling grille 51 is fixedly sleeved outside the inner pipe body 5. The interior of the filling grille 51 is divided into multiple separate spaces for filling heat-insulating foam blocks 52. One end of the filling grille 51 is fixed to the side wall of the first connecting ring 1, and one side wall of the second connecting ring 2 is fixedly connected to the filling grille 51. Heat-insulating foam blocks 52 are movably inserted inside the filling grille 51. The heat-insulating foam blocks 52 are used to keep the transported liquid warm, and each heat-insulating foam block 52 can be individually disassembled and replaced. There are multiple heat-insulating foam blocks 52. Plug-in slots 12 are symmetrically arranged on one side wall of the first connecting ring 1, facilitating the movable connection of the arc-shaped protective shell 3. The plug-in slots 12 are located outside the filling grille 51, and the arc-shaped protective shell 3 is movably inserted inside the plug-in slots 12 for increasing strength and protecting the inner pipe body 5 and the heat-insulating foam blocks 52. The arc-shaped protective shell 3 is made of aluminum alloy. The arc-shaped protective shell 3 is located between the first connecting ring 1 and the second connecting ring 2. The inner wall of the arc-shaped protective shell 3 is in contact with the filling grille 51. A plug-in plate 31 is fixed to one side wall of the arc-shaped protective shell 3 for the movable connection of the arc-shaped protective shell 3 with the first connecting ring 1, facilitating disassembly. The plug-in plate 31 is movably inserted inside the plug-in slots 12. Connecting grooves 22 are symmetrically arranged on the outer wall of the second connecting ring 2, providing a connection space for the connecting plate 33. A threaded groove 221 is arranged in the middle of one inner side wall of the connecting groove 22 for facilitating the fixation of the arc-shaped protective shell 3. A connecting plate 33 is fixed to the other side wall of the arc-shaped protective shell 3 for the movable connection of the arc-shaped protective shell 3 with the second connecting ring 2. The connecting plate 33 is movably inserted inside the connecting groove 22. A connecting hole 331 is arranged at the edge of one side wall of the connecting plate 33 for facilitating the connection and rotation of the connecting screw 34. The connecting screw 34 is movably inserted inside the connecting hole 331, and the lower end of the connecting screw 34 is threadedly connected inside the threaded groove 221 to fix the arc-shaped protective shell 3. The arc-shaped protective shell 3 of this solution can be disassembled conveniently to replace the heat-insulating foam blocks 52, which is beneficial to the long-term use of the composite pipe of this solution.

[0028] Refer to Figure 1 , Figure 2 and Figure 5As shown in the figure, specifically, fixing grooves 32 are symmetrically provided on the outer wall of the arc-shaped protective shell 3 for connecting the pressing discs 421 to fix the fixing ring 4. A fixing ring 4 is movably sleeved outside the arc-shaped protective shell 3. The fixing ring 4 is sleeved outside the arc-shaped protective shell 3 to closely combine the two arc-shaped protective shells 3. Receiving grooves 41 are symmetrically provided on the inner wall of the fixing ring 4. After the pressing discs 421 are received inside the receiving grooves 41, the fixing ring 4 can move along the outer wall of the arc-shaped protective shell 3 for disassembly. In the middle of one inner wall of the receiving groove 41, there is a threaded hole 411, which provides the necessary condition for the pressing screw 42 to drive the pressing disc 421 to move. A pressing screw 42 is threadedly connected inside the threaded hole 411 for driving the pressing disc 421 to move. One end of the pressing screw 42 is fixed with a pressing disc 421. The pressing disc 421 is movably inserted inside the fixing groove 32 to closely connect the two arc-shaped protective shells 3 together. In this solution, the fixing ring 4 further increases the strength and protection effect of the arc-shaped protective shell 3, avoiding accidental movement of the arc-shaped protective shell 3 and causing the internal structure to lose protection.

[0029] Referring to Figure 1 With Figure 2 As shown in the figure, specifically, an internally threaded tube 11 is fixed in the middle of the other side wall of the first connecting ring 1 for the combined connection of multiple composite tubes. An externally threaded tube 21 is fixed in the middle of one side wall of the second connecting ring 2. The size of the externally threaded tube 21 is adapted to the size of the internally threaded tube 11. The externally threaded tube 21 is threadedly connected inside the internally threaded tube 11 to use multiple composite tubes in combination. A sealing ring 211 is fixed at one end of the externally threaded tube 21. The sealing ring 211 is made of a flexible material and can prevent liquid leakage. In this solution, multiple composite tubes can be conveniently connected to increase the length and meet different usage requirements.

[0030] The working principle and usage process of the present utility model:

[0031] During use, the heat preservation effect of the heat preservation foam block 52 may decrease due to the influence of time or the usage environment. At this time, by turning the pressing screw 42, the pressing disc 421 can be driven to rotate and move out of the inside of the fixing groove 32 and received inside the receiving groove 41. Then, the fixing ring 4 is moved towards one end of the arc-shaped protective shell 3 to separate it from the arc-shaped protective shell 3. Then, the connecting screw 34 is screwed out from the inside of the threaded groove 221, and the arc-shaped protective shell 3 can be removed. Then, the heat preservation foam block 52 inside the filling grid 51 is taken out and replaced. If multiple composite tubes need to be connected and used together, the externally threaded tube 21 on the side wall of the second connecting ring 2 of one composite tube can be threadedly connected inside the internally threaded tube 11 on the side wall of the first connecting ring 1 of another composite tube, and the connection between multiple composite tubes can be completed. After the connection is completed, the sealing ring 211 is closely attached to the side wall of the first connecting ring 1 to prevent liquid leakage.

[0032] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A prefabricated heat-insulated composite pipe with an aluminum alloy lining and plastic, comprising a first connecting ring (1), characterized in that: In the middle of one side wall of the first connecting ring (1), an inner tube body (5) is fixed. An insulating grille (51) is fixedly sleeved outside the inner tube body (5). One end of the insulating grille (51) is fixed on the side wall of the first connecting ring (1). An insulating foam block (52) is movably inserted inside the insulating grille (51). One end of the inner tube body (5) is fixed with a second connecting ring (2). One side wall of the second connecting ring (2) is fixedly connected to the insulating grille (51). On one side wall of the first connecting ring (1), insertion slots (12) are symmetrically arranged. The insertion slots (12) are located outside the insulating grille (51). An arc-shaped protective shell (3) is movably inserted inside the insertion slots (12). The arc-shaped protective shell (3) is located between the first connecting ring (1) and the second connecting ring (2). The inner wall of the arc-shaped protective shell (3) is in contact with the insulating grille (51). On one side wall of the arc-shaped protective shell (3), an insertion plate (31) is fixed. The insertion plate (31) is movably inserted inside the insertion slots (12). On the outer wall of the arc-shaped protective shell (3), fixing grooves (32) are symmetrically arranged. A fixing ring (4) is movably sleeved outside the arc-shaped protective shell (3). On the inner wall of the fixing ring (4), receiving grooves (41) are symmetrically arranged. In the middle of one inner wall of the receiving groove (41), a threaded hole (411) is arranged. A pressing screw (42) is threadedly connected inside the threaded hole (411). One end of the pressing screw (42) is fixed with a pressing disc (421). The pressing disc (421) is movably inserted inside the fixing groove (32).

2. The aluminum alloy plastic-lined prefabricated thermal insulation composite pipe according to claim 1, characterized in that: On the outer wall of the second connecting ring (2), connection grooves (22) are symmetrically arranged. In the middle of one inner wall of the connection groove (22), a threaded groove (221) is arranged.

3. The aluminum alloy plastic-lined prefabricated thermal insulation composite pipe according to claim 2, characterized in that: On the other side wall of the arc-shaped protective shell (3), a connecting plate (33) is fixed. The connecting plate (33) is movably inserted inside the connection groove (22). On one side edge of the connecting plate (33), a connection hole (331) is arranged. A connecting screw (34) is movably inserted inside the connection hole (331). The lower end of the connecting screw (34) is threadedly connected inside the threaded groove (221).

4. The aluminum alloy plastic-lined prefabricated thermal insulation composite pipe according to claim 3, wherein: In the middle of the other side wall of the first connecting ring (1), an internally threaded tube (11) is fixed.

5. A kind of aluminum alloy lined plastic prefabricated thermal insulation composite pipe according to claim 4, characterized in that: In the middle of one side wall of the second connecting ring (2), an externally threaded tube (21) is fixed. The size of the externally threaded tube (21) is adapted to the size of the internally threaded tube (11).

6. The aluminum alloy lined plastic pre-insulated composite pipe according to claim 5, wherein: One end of the externally threaded tube (21) is fixed with a sealing ring (211).

7. A kind of aluminum alloy lined plastic prefabricated thermal insulation composite pipe according to claim 6, characterized in that: There are multiple insulating foam blocks (52). The sealing ring (211) is made of a flexible material.

8. A prefabricated heat-insulated composite pipe with an aluminum alloy plastic lining according to claim 7, characterized in that: The arc-shaped protective shell (3) is made of aluminum alloy. The inner tube body (5) is made of heat-resistant polyethylene.

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