Spraying and winding device for thermal insulation pipeline

Abstract

The utility model discloses a spraying and winding device for a heat preservation pipeline, and belongs to the field of heat preservation pipeline production. The spraying and winding device of the heat preservation pipeline comprises a supporting structure; the multiple conveying structures and the multiple supporting structures are arranged, the supporting structures and the conveying structures are alternately arranged to form a conveying line, and the conveying structures drive heat preservation pipelines to move; the auxiliary side rail is arranged on the side edge of the conveying line; the spraying structure sprays a heat preservation material to the outer wall of the heat preservation pipeline to form a heat preservation layer, and the spraying structure is located at the starting end of the conveying line; and the winding structure is provided with an unwinding roller, the unwinding roller is rotatably arranged on the auxiliary side rail, and an outer protective layer is wound to the exterior of the heat preservation layer through the unwinding roller. The device aims to complete spraying of a heat preservation layer of a pipe body and winding of an outer protection layer.

Description

Technical Field

[0001] The utility model relates to the technical field of heat-insulating pipe production, in particular to a spray winding device for heat-insulating pipes. Background Art

[0002] Insulated pipes, also known as heat-insulated pipes, are primarily used for the transportation of liquids, gases, and other media, and are widely used in a variety of fields. By employing specific materials and processes, they reduce energy consumption caused by temperature loss during the transportation process, as well as the impact of pipeline temperature on the external environment.

[0003] Polyurethane has an extremely low thermal conductivity, far lower than traditional insulation materials. This means it can more effectively prevent heat transfer, thereby reducing heat loss and improving energy efficiency. Therefore, polyurethane is sprayed on the outside of insulated pipes to improve their insulation effectiveness. Furthermore, since insulated pipes are often buried underground, to extend their service life and slow their corrosion rate, a layer of polyethylene is often applied to the outside of the polyurethane to protect the polyurethane insulation from mechanical damage and provide corrosion resistance and waterproofing.

[0004] This solution proposes a spraying and winding device for an insulated pipe, which completes the spraying of the pipe body insulation layer and the winding of the outer protective layer. Utility Model Content

[0005] The main purpose of the utility model is to provide a spray winding device for an insulated pipe, which aims to complete the processing of the insulation layer and the outer protective layer of the insulated pipe in the same production line.

[0006] To achieve the above-mentioned purpose, the present invention provides a spray wrapping device for an insulated pipe, comprising:

[0007] Support structure;

[0008] The conveying structure and the supporting structure are both provided with a plurality of them, the supporting structure and the conveying structure are alternately arranged to form a conveying line, and the conveying structure drives the insulated pipe to move;

[0009] Auxiliary side rails, the auxiliary side rails are arranged on the sides of the conveyor line;

[0010] a spraying structure, wherein the spraying structure sprays a heat-insulating material onto the outer wall of the heat-insulating pipe to form a heat-insulating layer, and the spraying structure is located at the starting end of the conveying line;

[0011] The winding structure comprises a winding roller, which is rotatably arranged on the auxiliary side rail, and the outer protective layer is wound around the outside of the thermal insulation layer by the winding roller.

[0012] Optionally, in one embodiment of the present invention, the conveying structure includes:

[0013] There are two conveying rollers, both of which are in contact with the insulation pipe;

[0014] a first base, the first base being located below the conveying roller, a driving component being arranged in the first base, and the driving component being drivingly connected to the conveying roller;

[0015] The second base is provided with a lifting cylinder, one end of the lifting cylinder is connected to the first base, and the lifting cylinder drives the first base to rise and fall.

[0016] Optionally, in one embodiment of the present invention, the conveying structure further includes a guide rod, the second base is provided with a through hole, one end of the guide rod is connected to the first base, and the other end passes through the through hole and extends into the second base, and four guide rods are provided.

[0017] Optionally, in an embodiment of the present invention, the support structure includes:

[0018] A support plate, wherein a through slot is formed on the top of the support plate;

[0019] a side plate, the side plate being located on one side of the support plate;

[0020] A protective pad is located between the support plate and the side plate, and the heat-insulating pipe abuts against the protective pad.

[0021] Optionally, in one embodiment of the present utility model, the side plate includes a first plate body and a second plate body, the first plate body is provided with the through groove, the first plate body is rotatably connected to a shift cylinder, the other end of the shift cylinder is rotatably connected to the support plate, and the second plate body is rotatably connected to the support plate.

[0022] Optionally, in one embodiment of the present invention, a cooling structure is further included, and the cooling structure cools the wound insulated pipe.

[0023] Optionally, in an embodiment of the present invention, the cooling structure is a spray head, and the spray head is located on one side of the insulation pipe.

[0024] Optionally, in an embodiment of the present invention, a trimming structure is further included, and the trimming structure is located between the spraying structure and the winding structure to trim the thermal insulation layer.

[0025] Optionally, in one embodiment of the present invention, a base frame is further included, which extends along the conveying direction of the insulation pipe, and the supporting structure, the conveying structure and the spraying structure are all installed on the base frame.

[0026] Compared with the prior art, the present invention can at least achieve the following beneficial effects. During the production process of the insulated pipe, it is necessary to go through the processes of shot blasting and rust removal - insulation layer spraying - outer protective layer winding - spray cooling to complete the production. After the pipe body of the insulated pipe is shot blasted and rust removed, it is placed on the spray winding device, and the pipe body is gradually transported backward by the conveying structure. When the pipe body is transported to the spraying structure, the spraying structure sprays the insulation material to the outside of the pipe body to form an insulation layer. After the spraying is completed, the pipe is gradually transported to the winding structure, and a polyethylene outer protective layer is coated on the outside of the insulation layer to protect the insulation layer and prevent the insulation layer from being scratched and corroded during use, resulting in insulation failure. Since the overall thickness of the insulated pipe will change during the spraying and winding process, by alternately setting different support structures in the conveying structure and selecting the support height of the support structure, the insulated pipe can still stably contact with the next conveying structure after the thickness changes, and is gradually transported by the conveying structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0028] Figure 1 This is a structural schematic diagram of an embodiment of a spray wrapping device for an insulated pipe according to the present utility model;

[0029] Figure 2 for Figure 1 A partial enlarged view of point A in the middle;

[0030] Figure 3 This is a three-dimensional diagram of the conveying structure in a spray winding device for an insulation pipe according to the present invention;

[0031] Figure 4 This is a side view of a conveying structure in a spray winding device for an insulation pipe according to the present invention;

[0032] Figure 5 It is a three-dimensional diagram of the supporting structure in a spray wrapping device for an insulated pipe according to the utility model.

[0033] Description of Figure Numbers:

[0034] 100, support structure; 110, support plate; 111, through slot; 120, side plate; 121, first plate; 122, second plate; 130, protective pad; 140, shifting cylinder; 200, conveying structure; 210, conveying roller; 220, first base; 230, second base; 240, lifting cylinder; 250, guide rod; 300, auxiliary side rail; 400, spraying structure; 500, winding structure; 600, finishing structure; 700, cooling structure; 800, chassis;

[0035] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0038] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0039] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0040] Reference Figures 1 to 5 The utility model provides a spray winding device for an insulation pipe, comprising:

[0041] Support structure 100;

[0042] The conveying structure 200 and the supporting structure 100 are both provided with a plurality of them. The supporting structure 100 and the conveying structure 200 are alternately arranged to form a conveying line. The conveying structure 200 drives the insulated pipe to move;

[0043] Auxiliary side rails 300, the auxiliary side rails 300 are arranged on the side of the conveyor line;

[0044] Spraying structure 400, spraying insulation material onto the outer wall of the insulation pipe to form an insulation layer, the spraying structure 400 is located at the starting end of the conveying line;

[0045] The winding structure 500 has a reel that is rotatably disposed on the auxiliary side rail 300 , and the outer protective layer is wound around the outside of the thermal insulation layer by the reel.

[0046] During the production process, the insulated pipe needs to go through the processes of shot blasting and rust removal - insulation layer spraying - outer protective layer winding - spray cooling to complete the production. After the pipe body of the insulated pipe is shot blasted and rust removed, it is placed on the spray winding device, and the pipe body is gradually transported backward through the conveying structure 200. When the pipe body is transported to the spraying structure 400, the spraying structure 400 sprays the insulation material to the outside of the pipe body to form an insulation layer. After the spraying is completed, the pipe is gradually transported to the winding structure 500. Driven by the conveying structure 200, the insulated pipe rotates and moves forward. This movement trend causes the outer protective layer to gradually wrap around the outside of the insulation layer, protecting the insulation layer and preventing it from being scratched and corroded during use, resulting in insulation failure. Since the overall thickness of the insulated pipe will change during the spraying and winding process, by alternately arranging different support structures 100 in the conveying structure 200 and selecting the support height of the support structure 100, the insulated pipe can still stably contact with the next conveying structure 200 after the thickness changes and be gradually transported by the conveying structure 200.

[0047] In order to prevent incomplete spraying of the rigid polyurethane, multiple spraying structures 400 may be provided to perform simultaneous spraying on both sides of the insulation pipe or to perform multiple spraying operations during the transportation process.

[0048] The conveying structure 200 includes:

[0049] There are two conveying rollers 210, both of which are in contact with the insulation pipe;

[0050] The first base 220 is located below the conveying roller 210. A driving component is arranged in the first base 220 and is drivingly connected to the conveying roller 210.

[0051] The second base 230 is provided with a lifting cylinder 240 . One end of the lifting cylinder 240 is connected to the first base 220 . The lifting cylinder 240 drives the first base 220 to move up and down.

[0052] By setting a lifting cylinder 240 to adjust the height of the first base 220, the spray-wrapping device can transport and process insulated pipes of different diameters, thereby improving the versatility of the spray-wrapping device. In order to ensure the stability of the first base 220 during the lifting process, four guide rods 250 are provided to limit the lifting trajectory of the first base 220 to ensure that the first base 220 is lifted and lowered stably.

[0053] The support structure 100 comprises:

[0054] A support plate 110, with a through slot 111 formed on the top of the support plate 110;

[0055] A side plate 120 , the side plate 120 is located on one side of the support plate 110 ;

[0056] The protective pad 130 is located between the support plate 110 and the side plate 120 , and the heat-insulating pipe abuts against the protective pad 130 .

[0057] The insulated pipe is placed on the protective pads 130 of the support plate 110 and the side plate 120. The protective pads 130 are provided to prevent scratches on the pipe body, the insulation layer or the outer protective layer during transportation.

[0058] Specifically, the side plate 120 includes a first plate body 121 and a second plate body 122. The first plate body 121 is provided with a through groove 111. The first plate body 121 is rotatably connected to a shift cylinder 140. The other end of the shift cylinder 140 is rotatably connected to the support plate 110. The second plate body 122 is rotatably connected to the support plate 110.

[0059] Because both ends of the repositioning cylinder 140 are rotatably connected, they can adjust the rotational position of the side plate 120. Changing the position of the side plate 120 can adjust the diameter of the passage through the slot 111, allowing the support structure 100 to pass through insulated pipes of different diameters, thereby improving the versatility of the spray wrap structure 500.

[0060] Specifically, the insulation layer can be made of rigid polyurethane. Polyurethane has a low thermal conductivity, effectively reducing heat conduction and providing excellent insulation. Furthermore, after foaming, it produces a unique cell structure, which further enhances the insulation effect. To shorten production time and ensure effective insulation, the insulation material sprayed on the exterior of the tube is rigid polyurethane. Rigid polyurethane foams quickly after spraying and has sufficient strength for transport.

[0061] The outer sheath can be made of high-density polyethylene (HDPE). HDPE itself offers excellent thermal insulation. When combined with the polyurethane insulation layer, it forms a robust insulation system, reducing heat dissipation within the pipe. HDPE also offers excellent corrosion resistance, resisting attack by soil, water, and other chemicals, protecting the interior of the pipe from damage. It also exhibits excellent aging resistance, maintaining stable physical and chemical properties over long periods of use.

[0062] Furthermore, a trimming structure 600 is included. The trimming structure 600 is located between the spraying structure 400 and the winding structure 500 and is used to trim the thermal insulation layer.

[0063] Specifically, the trimming structure 600 includes an angled scraper and a cylinder. To ensure a smooth and even insulation layer after spraying, the trimming structure 600 is configured to trim the sprayed insulation layer. When the insulated pipe enters the trimming structure 600, the scraper scrapes away any protruding portions of the insulation layer, flattening the insulation layer.

[0064] Furthermore, a cooling structure 700 is included, and the cooling structure 700 cools down the wound insulation pipe. Specifically, the cooling structure 700 is a spray head, and the spray head is located on at least one side of the insulation pipe.

[0065] After the outer sheath is wrapped, the insulated pipe needs to be sprayed to cool it down. This cooling process ensures that the polyurethane insulation layer cures at an appropriate temperature while maintaining the good performance of the polyethylene outer sheath. During the cooling process, the insulation and outer sheath materials will undergo some shrinkage and stress changes, which improves the bonding strength between the two layers and strengthens the connection between the insulation and outer sheath. Since the cooling method for the insulated pipe is spray cooling, it is necessary to ensure that other structures in this area are waterproofed accordingly.

[0066] Furthermore, the device includes a base frame 800, which extends along the conveying direction of the insulated pipe. The support structure 100, conveying structure 200, and spraying structure 400 are all mounted on the base frame 800. Since mechanical vibration is inevitably generated during the entire operation process, which not only generates noise but also causes the components of each structure to loosen, the base frame 800 is provided to connect the various structures into a whole, improve their overall stability, reduce vibration, or share vibration to solve the above problems.

[0067] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by utilizing the contents of the present invention specification and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A spray wrapping device for an insulated pipe, characterized in that: include: Support structure; The conveying structure and the supporting structure are both provided with a plurality of them, the supporting structure and the conveying structure are alternately arranged to form a conveying line, and the conveying structure drives the insulated pipe to move; Auxiliary side rails, the auxiliary side rails are arranged on the sides of the conveyor line; a spraying structure, wherein the spraying structure sprays a heat-insulating material onto the outer wall of the heat-insulating pipe to form a heat-insulating layer, and the spraying structure is located at the starting end of the conveying line; The winding structure comprises a winding roller, which is rotatably arranged on the auxiliary side rail, and the outer protective layer is wound around the outside of the thermal insulation layer by the winding roller.

2. The spray wrapping device for the thermal insulation pipe according to claim 1, characterized in that: The conveying structure comprises: There are two conveying rollers, both of which are in contact with the insulation pipe; a first base, the first base being located below the conveying roller, a driving component being arranged in the first base, and the driving component being drivingly connected to the conveying roller; The second base is provided with a lifting cylinder, one end of the lifting cylinder is connected to the first base, and the lifting cylinder drives the first base to rise and fall.

3. The spray wrapping device for the thermal insulation pipe according to claim 2, characterized in that: The conveying structure also includes a guide rod. The second base is provided with a through hole. One end of the guide rod is connected to the first base, and the other end passes through the through hole and extends into the second base. Four guide rods are provided.

4. The spray wrapping device for the thermal insulation pipe according to claim 1, characterized in that: The support structure comprises: A support plate, wherein a through slot is formed on the top of the support plate; a side plate, the side plate being located on one side of the support plate; A protective pad is located between the support plate and the side plate, and the heat-insulating pipe abuts against the protective pad.

5. The spray wrapping device for the thermal insulation pipe according to claim 4, characterized in that: The side plate includes a first plate body and a second plate body, the first plate body is provided with the through slot, the first plate body is rotatably connected to a transposition cylinder, the other end of the transposition cylinder is rotatably connected to the support plate, and the second plate body is rotatably connected to the support plate.

6. The spray wrapping device for the thermal insulation pipe according to claim 1, characterized in that: It also includes a cooling structure, which cools down the wound insulated pipe.

7. The spray wrapping device for the thermal insulation pipe according to claim 6, characterized in that: The cooling structure is a spray head, and the spray head is located on one side of the insulation pipe.

8. The spray wrapping device for the thermal insulation pipe according to claim 1, characterized in that: It also includes a trimming structure, which is located between the spraying structure and the winding structure and is used to trim the thermal insulation layer.

9. The spray wrapping device for the thermal insulation pipe according to claim 1, characterized in that: It also includes a base frame, which extends along the conveying direction of the insulation pipe. The supporting structure, the conveying structure and the spraying structure are all installed on the base frame.

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