Positioning mechanism for foaming of directly-buried thermal insulation pipeline

Abstract

The utility model discloses a positioning mechanism for foaming a directly-buried thermal insulation pipeline, which comprises symmetrically-arranged annular supporting blocks, inclined surfaces are arranged on the inner sides of the supporting blocks, the positioning mechanism can adapt to different gap sizes by arranging the inclined surfaces, and the two supporting blocks are connected through a lead screw. During foaming, the annular supporting blocks are arranged on the working steel pipe in a sleeving mode, the supporting blocks are pulled oppositely by rotating the nuts on the lead screws, the protective shell sleeve can be opened through the inclined faces on the inner sides of the supporting blocks, and operation is easy and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of directly buried thermal insulation pipe foaming, in particular to a positioning mechanism for directly buried thermal insulation pipe foaming. Background Art

[0002] The first layer of a prefabricated, direct-buried polyurethane foam insulated pipe structure is the working steel pipe. This layer is typically seamless, spiral, or straight-seam steel pipe, depending on the design and customer requirements. The next layer, the polyurethane insulation layer, is formed by a high-pressure foaming machine, injecting a black or white polyurethane material into the gap between the steel pipe and the outer sheath. This chemical reaction occurs, also known as "pipe-in-pipe foaming." The final layer is the high-density polyethylene protective shell, prefabricated in black or yellow plastic casing with a fixed thickness. This not only protects against mechanical damage but also provides corrosion resistance and waterproofing.

[0003] During foaming, the end of the protective shell sleeve and the end of the working steel pipe need to be spread apart, and the material is injected between the two for foaming. The existing method is to use two ring-shaped wood to spread the protective shell sleeve apart, and then hammer the ring-shaped wood repeatedly to open the protective shell sleeve, which is time-consuming and labor-intensive. Utility Model Content

[0004] The purpose of the utility model is to solve the above problems and provide a positioning mechanism for directly buried thermal insulation pipe foaming, which is convenient for spreading the end of the protective shell sleeve and the end of the working steel pipe, and is simple and convenient to operate.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A positioning mechanism for directly buried thermal insulation pipe foaming comprises symmetrically arranged annular support blocks, wherein the inner sides of the support blocks are provided with inclined surfaces, and the two support blocks are connected by a lead screw.

[0007] Furthermore, two lead screws are symmetrically provided.

[0008] Furthermore, a connecting block is symmetrically provided on the support block, both ends of the lead screw pass through the connecting block, and a nut is provided on the lead screw at the outside of the connecting block.

[0009] Furthermore, a plurality of support plates are evenly arranged at intermediate positions on the inner side of the support block and are rotatably connected to the support block.

[0010] Furthermore, a compression spring is provided between the upper end of the support plate and the inclined surface of the support block.

[0011] Furthermore, the support block is provided with a through hole.

[0012] The beneficial effects of the utility model are:

[0013] 1. The utility model includes symmetrically arranged annular support blocks with an inner beveled surface that can accommodate different gap sizes. The two support blocks are connected by a screw. During foaming, the annular support block is placed on the working steel pipe. By turning the nut on the screw, the support blocks are pulled toward each other. The inner beveled surface of the support block can open the protective shell sleeve, making operation simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] 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, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0015] Figure 1 This is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is the main view of the utility model.

[0017] In the figure: support block 1, inclined surface 2, lead screw 3, connecting block 4, nut 5, support plate 6, compression spring 7, through hole 8. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the following will be combined with the drawings of the embodiments of the present invention to clearly and completely describe the technical solutions of 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 should fall within the scope of protection of the present invention.

[0019] like Figure 1 As shown, a positioning mechanism for directly buried insulated pipe foaming comprises symmetrically arranged annular support blocks 1 with inclined surfaces 2 on their inner sides. These inclined surfaces 2 can accommodate various gap sizes. Two support blocks 1 are connected by a screw 3. During foaming, the annular support blocks 1 are placed over the working steel pipe. By turning the nut on the screw 3, the support blocks 1 are pulled toward each other. The inclined surfaces on the inner sides of the support blocks 1 prop open the protective casing, making operation simple and convenient.

[0020] like Figure 1 As shown, two lead screws 3 are symmetrically provided.

[0021] like Figure 1As shown, the support block 1 is symmetrically provided with a connecting block 4, and both ends of the screw 3 pass through the connecting block 4. A nut 5 is provided on the screw 3 on the outside of the connecting block 4. By rotating the nut 5, the two annular support blocks 1 can be moved toward each other.

[0022] like Figure 1 and Figure 2 As shown, a number of support plates 6 are evenly arranged at intermediate positions on the inner side of the support block 1 and are rotatably connected to the support block 1. When the support blocks 1 move toward each other, the lower ends of the support plates 6 first penetrate into the gap. When the upper ends of the support plates 6 contact the protective shell sleeve, the lower ends of the support plates 6 open to provide a preliminary positioning for the protective shell sleeve, which is highly efficient.

[0023] A compression spring 7 is provided between the upper end of the support plate 6 and the inclined surface of the support block 1 .

[0024] like Figure 1 As shown, the support block 1 is provided with a through hole 8 for convenient observation of whether the foaming is completed.

[0025] In the description of the present invention, it should be noted that the terms "left", "right", "up", "down", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as a limitation on the present invention.

[0026] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

Claims

1. A positioning mechanism for directly buried thermal insulation pipe foaming, characterized in that: It comprises symmetrically arranged annular support blocks (1), wherein an inclined surface (2) is provided on the inner side of the support blocks (1), and the two support blocks (1) are connected via a lead screw (3).

2. A positioning mechanism for foaming a directly buried thermal insulation pipe according to claim 1, characterized in that: The lead screws (3) are symmetrically provided with two.

3. A positioning mechanism for foaming a directly buried thermal insulation pipe according to claim 1, characterized in that: A connecting block (4) is symmetrically provided on the support block (1), both ends of the lead screw (3) pass through the connecting block (4), and a nut (5) is provided on the lead screw (3) outside the connecting block (4).

4. A positioning mechanism for foaming a directly buried thermal insulation pipe according to claim 1, characterized in that: A plurality of support plates (6) rotatably connected to the support block (1) are evenly arranged at intermediate positions on the inner side of the support block (1).

5. A positioning mechanism for foaming a directly buried thermal insulation pipe according to claim 4, characterized in that: A compression spring (7) is provided between the upper end of the support plate (6) and the inclined surface of the support block (1).

6. A positioning mechanism for foaming a directly buried thermal insulation pipe according to claim 1, characterized in that: The support block (1) is provided with a through hole (8).

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