Processing device and method for heat-insulating elbow pipe fitting

Abstract

The application relates to the technical field of heat-preservation elbow pipe fittings, and discloses a processing device and method of a heat-preservation elbow pipe fitting, which comprises a template, the template comprises an upper template and a lower template used for butt joint fixing on the peripheral side of a steel elbow, a lower mold injection hole is arranged on the lower template, an upper mold exhaust hole is arranged on the upper template to form a heat-preservation layer, adjusting bolts are arranged at the middle positions of the two sides of the lower template, the adjusting bolts penetrate through the lower template to ensure that the steel elbow is concentric with the lower template; there is no wood support or other materials between the working steel elbow and the forming die, the overall integrity of the heat-preservation layer is guaranteed, and the heat-preservation effect and the overall strength of the heat-preservation layer are improved. Secondly, since the heat-preservation protective layer is wound after the heat-preservation layer is formed, defects existing in the heat-preservation layer can be found in time and repaired, and the possibility that the heat-preservation effect of the heat-preservation layer at local positions is poor can be avoided.

Description

A processing apparatus and method for insulated elbow pipe fittings Technical Field

[0001] This invention relates to the field of insulated elbow pipe fittings technology, and in particular to a processing apparatus and method for insulated elbow pipe fittings. Background Technology

[0002] Thermal insulation pipe fittings generally consist of three structures: the working steel pipe fitting, the insulation layer, and the outer protective layer. Currently, when processing the insulation layer on the outer circumference of steel pipe elbow fittings, the outer protective layer is usually first fitted onto the working steel pipe fitting. Multiple wooden support blocks are used to evenly separate the gap between the outer protective layer and the working steel pipe fitting. Then, the gap between the two is sealed, and the insulation material is injected into the gap between the outer protective layer and the working steel pipe fitting.

[0003] In the manufacturing method of the aforementioned insulated elbow pipe fittings, on the one hand, the presence of wooden supports affects the thermal insulation effect of the insulation layer; simultaneously, the presence of wooden supports within the insulation layer reduces its strength. On the other hand, because the insulation material is formed directly between the working steel pipe fitting and the outer protective layer, the quality of the insulation layer cannot be observed, and quality indicators such as the density of various parts cannot be controlled. This may result in defects in the thermal insulation effect of the insulated pipe fittings. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a processing device and method for insulated elbow pipe fittings, which ensures that there are no wooden supports or other materials between the steel elbow and the template, thus ensuring the overall integrity of the insulation layer, while improving the insulation effect and overall strength of the insulation layer.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0006] In a first aspect, a processing device for an insulated elbow pipe fitting includes a template. The template includes an upper template and a lower template for docking and fixing to the periphery of the steel elbow. The lower template is provided with a lower mold injection hole, and the upper template is provided with an upper mold vent hole to form an insulation layer. Adjusting bolts are provided at the middle positions on both sides of the lower template. The adjusting bolts pass through the lower template to ensure that the steel elbow and the lower template are concentric.

[0007] As a further implementation, the upper and lower templates are arranged in an arc shape, with the same curvature as the steel elbow.

[0008] As a further implementation, the upper template is provided with upper mold connecting plates on both sides of the upper template and the lower template is provided with lower mold connecting plates on both sides of the lower template, with the upper mold connecting plates and lower mold connecting plates being set accordingly.

[0009] As a further implementation, the upper mold connecting plate and the lower mold connecting plate are arranged in parallel, and the upper mold connecting plate and the lower mold connecting plate are fixed together by connecting bolts.

[0010] As a further implementation, the lower mold injection holes are located at both ends of the lower template, and the upper mold venting holes are located at both ends of the upper template.

[0011] As a further implementation, the lengths of the upper and lower templates are less than the length of the rigid elbow.

[0012] As a further implementation, a lower mold support is also included, with a groove on the top of the lower mold support. The shape of the groove is adapted to the shape of the lower mold template to support the lower mold template.

[0013] Secondly, a method for processing an insulated elbow pipe fitting, characterized in that it employs any of the above-mentioned processing devices for insulated elbow pipe fittings, comprising the following steps:

[0014] Place the steel elbow on the lower template, adjust the relative position of the steel elbow and the lower template to make the steel elbow and the lower template concentric, rotate the adjusting bolt to tighten the adjusting bolt against the steel elbow, and close the upper template and the lower template.

[0015] Liquid insulation material is injected through the injection hole of the lower mold to ensure that the insulation layer fills the forming space between the steel elbow and the template;

[0016] Remove the adjusting bolt and inject liquid insulation material into the adjusting bolt hole to form the entire insulation layer;

[0017] A strip-shaped heat-insulating protective layer is wrapped around the outer surface of the insulation layer.

[0018] As a further implementation, when liquid insulation material overflows from the vent hole of the upper mold, the insulation layer is filled.

[0019] As a further implementation, when wrapping the thermal insulation protective layer, a heating wire is provided at the edge of the thermal insulation protective layer. The thermal insulation protective layer adopts the method of overlapping the previous layer with a set width. After the wrapping is completed, the thermal insulation protective layers that are overlapped together are fused together by the heating wire.

[0020] The beneficial effects of the present invention are as follows:

[0021] 1. The adjusting screw of this invention is used to adjust the uniformity of the gap between the working pipe fitting and the insulation layer forming mold. This facilitates fixing the steel elbow and the lower template after adjusting their relative positions, ensuring that there are no wooden supports or other materials between the steel elbow and the template, thus guaranteeing the overall integrity of the insulation layer and improving its insulation effect and overall strength. The template design allows the insulation protective layer to be wound after the insulation layer is formed, enabling timely detection and repair of defects in the insulation layer, avoiding the possibility of poor insulation performance in certain areas.

[0022] 2. The thermal insulation protective layer of the present invention is a strip structure and is equipped with heating wire. The method of overlapping the previous layer with the next layer of a set width makes the wound outer thermal insulation protective layer a whole structure, avoiding the possibility of hydrolysis of the thermal insulation layer due to water seepage, and the quality of the processed thermal insulation elbow is better. Attached Figure Description

[0023] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0024] Figure 1 is a schematic diagram of the processing device for the insulated elbow pipe fitting in an embodiment of the present invention.

[0025] Figure 2 is a schematic diagram of the overall structure of the heat-insulating elbow in an embodiment of the present invention.

[0026] Figure 3 is a partial structural schematic diagram of the insulated elbow in an embodiment of the present invention.

[0027] Figure 4 is a partially enlarged structural schematic diagram of the insulated elbow in an embodiment of the present invention.

[0028] The diagram exaggerates the spacing or dimensions between parts to show their positions; the diagram is for illustrative purposes only.

[0029] The components are: 1. Lower mold support, 2. Lower template, 2-1. First lower mold injection hole, 2-2. Second lower mold injection hole, 3. Steel elbow, 4. Lower mold connecting plate, 5. Upper mold connecting plate, 6. Connecting bolt, 7. Upper template, 7-1. First upper mold vent hole, 7-2. Second upper mold vent hole, 8. Adjusting bolt, 9. Insulation layer, 10. Insulation protection layer, 11. Heating wire. Detailed Implementation

[0030] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0031] Example 1

[0032] In a typical embodiment of the present invention, referring to Figures 1-4, a processing device for a thermally insulated elbow pipe fitting includes a template and a lower template support 1. The template includes an upper template 7 and a lower template 2 for connecting and fixing to the periphery of the steel elbow 3, and the lower template support 1 is used to support the lower template 2.

[0033] As shown in Figure 1, the lower mold support 1 has a groove at its top. The groove is arc-shaped and its shape matches the shape of the lower mold template 2 to facilitate its support. The upper mold template 7 and the lower mold template 2 are arc-shaped, with the same curvature as the steel elbow 3. The upper mold template 7 and the lower mold template 2 are used to connect and fix them to the periphery of the steel elbow 3.

[0034] As shown in Figure 1, the template is provided with a lower mold injection hole and an upper mold vent hole to facilitate the injection of liquid insulation material into the template to form an insulation layer. The upper mold vent hole is used to vent air outward when the insulation material is injected. When insulation material overflows from the upper mold vent hole, it can be determined whether the insulation layer inside the template is full.

[0035] Multiple upper mold connecting plates 5 are provided on both sides of the upper mold template 7, and multiple lower mold connecting plates 4 are provided on both sides of the lower mold template 2. The upper mold connecting plates 5 and lower mold connecting plates 4 are set correspondingly. Specifically, the upper mold connecting plates 5 and lower mold connecting plates 4 are set parallel to each other, and the upper mold connecting plates 5 and lower mold connecting plates 4 are fixed together by connecting bolts 6.

[0036] The upper mold connecting plate 5 and the lower mold connecting plate 4 are located at the two side edges of the upper mold template 7 and the lower mold template 2, respectively, and the connecting plates are perpendicular to the templates. The lengths of the upper mold template 7 and the lower mold template 2 are less than the length of the steel elbow 3. During the processing of the insulation layer of the steel elbow 3, the lower mold template 2 is placed in the groove on the lower mold support 1, and the upper mold template 7 is located at the top of the template. The two have the same curvature, and the upper mold connecting plate 5 and the lower mold connecting plate 4 are connected by connecting bolts 6. Both ends of the upper mold template 7 and the lower mold template 2 are semi-circular plate structures, and a semi-circular groove is provided in the middle so that after they are connected, they can be closed around the steel elbow 3. The two ends of the steel elbow 3 extend out of the two ends of the template, and the area of ​​the template covering the steel elbow 3 is a closed area.

[0037] Adjusting bolts 8 are installed at the middle positions on both sides of the lower template 2. The adjusting bolts 8 pass through the lower template and are threadedly connected to the lower template 2 to ensure that the steel elbow 3 is concentric with the lower template 2.

[0038] As shown in Figure 1, there are two injection holes in the lower mold, located at both ends of the lower mold plate, namely the first injection hole 2-1 and the second injection hole 2-2. There are also two vent holes in the upper mold, located at both ends of the upper mold plate 7, namely the first vent hole 7-1 and the second vent hole 7-2.

[0039] During the injection of liquid insulation material, the prepared liquid insulation material is injected into the mold through the small holes (injection holes) at both ends of the lower mold plate 2, gradually filling the entire molding space. Whether the insulation layer is full is determined by whether there is insulation material overflowing from the small holes (venting holes) at both ends of the upper mold plate 7.

[0040] In this embodiment, the adjusting bolts 8 are used to adjust the uniformity of the gap between the working pipe fitting and the insulation layer forming mold. This allows, after adjusting the relative position of the steel elbow and the lower template to ensure concentricity, the adjusting bolts 8 on both sides of the lower template to be rotated, causing the ends of the adjusting bolts 8 to press against the steel elbow 3. This fixes the relative position between the steel elbow 3 and the lower template 2. The wooden support structure is eliminated, ensuring the strength and heat insulation effect of the insulation layer. After the insulation material is injected, the adjusting bolts are rotated and removed, and more insulation material is injected through the adjusting bolt holes, ensuring that the space between the steel elbow and the template is entirely filled with insulation material, without any other filling structure.

[0041] There are no wooden supports or other materials between the working steel elbow 3 and the forming mold (template), ensuring the overall integrity of the insulation layer and improving its insulation effect and overall strength. Secondly, since the insulation protective layer is wrapped after the insulation layer 9 is formed, any defects in the insulation layer 9 can be detected and repaired in a timely manner, avoiding the possibility of poor insulation effect in some areas of the insulation layer.

[0042] Example 2

[0043] A method for processing insulated elbow pipe fittings, using the processing apparatus for insulated elbow pipe fittings in Embodiment 1, includes the following steps:

[0044] The lower template is supported on the lower template bracket, and the steel elbow is placed on the lower template. The relative position of the steel elbow and the lower template is adjusted to make the steel elbow and the lower template concentric, thereby ensuring that the thickness of the insulation layer 9 is consistent.

[0045] Rotate the adjusting bolt to tighten it against the steel elbow, and then close the upper and lower templates. The adjusting bolt is used to adjust the uniformity of the gap between the working steel pipe fitting and the insulation layer forming mold (template).

[0046] Liquid insulation material is injected through the injection holes of the lower mold (first lower mold injection hole and second lower mold injection hole) to ensure that the insulation layer fills the forming space between the steel elbow and the template.

[0047] Whether the insulation layer is full can be determined by checking whether there is any insulation material overflowing from the first and second upper mold vents at both ends of the upper mold. After the insulation material fills the molding space, unscrew the adjusting bolts on both sides of the middle position of the lower mold.

[0048] Then loosen the connecting bolts of the upper and lower templates and remove the working steel elbow with the insulation layer. Inject a small amount of insulation material into the insulation layer hole formed by the adjusting bolts and check the insulation layer for defects. If any are found, inject a small amount of insulation material again by drilling holes at the defect locations or using other methods to ensure the insulation layer remains intact.

[0049] Then, a strip-shaped thermal insulation protective layer 10 is wound around the outer surface of the thermal insulation layer. In this embodiment, a heating wire 11 is provided on the outer side of the strip-shaped thermal insulation protective layer 10. The heating wire 11 is located at the edge of the strip-shaped thermal insulation protective layer 10, and its width is approximately one-quarter to one-half of the width of the strip. The function of the heating wire is to fuse the protective layers that are wound and stacked together together.

[0050] Specifically, when winding the thermal insulation protective layer 10, the thermal insulation protective layer 10 adopts a method of overlapping the previous layer by half a width. After winding, the thermal insulation protective layers that are overlapped together are fused together by heating wire.

[0051] The heating wire 11 ensures that the wound insulation and protective layer 10 is a single structure, avoiding the possibility of hydrolysis of the insulation layer due to water seepage, resulting in better quality insulation elbows.

[0052] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A processing device for insulated elbow pipe fittings, characterized in that, The system includes a template, comprising an upper template and a lower template for connecting and fixing to the periphery of the steel elbow. The lower template has a lower mold injection hole, and the upper template has an upper mold vent hole to form an insulation layer. Adjusting bolts are installed at the middle positions on both sides of the lower template, and the adjusting bolts pass through the lower template to ensure that the steel elbow and the lower template are concentric. The lower mold injection hole is located at both ends of the lower template, and the upper mold vent hole is located at both ends of the upper template. The length of the upper template and the lower template is less than the length of the steel elbow.

2. The processing device for a thermally insulated elbow pipe fitting according to claim 1, characterized in that, The upper and lower templates are arranged in an arc shape, with the same curvature as the steel elbow.

3. The processing device for a thermally insulated elbow pipe fitting according to claim 1, characterized in that, The upper template has upper mold connecting plates on both sides of its sides, and the lower template has lower mold connecting plates on both sides of its sides. The upper mold connecting plates and the lower mold connecting plates are set accordingly.

4. The processing device for a thermally insulated elbow pipe fitting according to claim 3, characterized in that, The upper mold connecting plate and the lower mold connecting plate are arranged in parallel, and the upper mold connecting plate and the lower mold connecting plate are fixed together by connecting bolts.

5. The processing device for a thermally insulated elbow pipe fitting according to claim 1, characterized in that, It also includes a lower mold support, the top of which has a groove that matches the shape of the lower mold template to support it.

6. A method for processing an insulated elbow pipe fitting, characterized in that, The processing apparatus for insulated elbow pipe fittings as described in any one of claims 1-5 includes the following steps: placing the steel elbow on the lower template, adjusting the relative position of the steel elbow and the lower template to make the steel elbow and the lower template concentric, rotating the adjusting bolt to tighten the adjusting bolt against the steel elbow, and closing the upper template and the lower template; injecting liquid insulation material through the injection hole of the lower template to ensure that the insulation layer fills the forming space between the steel elbow and the template; removing the adjusting bolt, injecting liquid insulation material at the position of the adjusting bolt hole to form the entire insulation layer; and wrapping a strip-shaped insulation protective layer around the outer surface of the insulation layer.

7. The processing method of an insulated elbow pipe fitting according to claim 6, characterized in that, When liquid insulation material overflows from the vent hole of the upper mold, the insulation layer is filled.

8. The processing method of an insulated elbow pipe fitting according to claim 7, characterized in that, When wrapping the thermal insulation protective layer, heating wires are provided at the edge of the thermal insulation protective layer. The thermal insulation protective layer adopts the method of overlapping the previous layer with a set width. After the wrapping is completed, the thermal insulation protective layers that are overlapped together are fused together by the heating wires.

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