Glass fiber reinforced plastic air pipe

Abstract

The utility model discloses a glass fiber reinforced plastic air pipe which comprises a plurality of pipeline units which are sequentially connected end to end, and each pipeline unit comprises a pipe body, an inserting structure and a bearing structure, and the inserting structures and the bearing structures are arranged at the two ends of the pipe body respectively. The pipe body comprises a glass fiber inner layer and a glass fiber outer layer; the inserting structure comprises an inserting cylinder arranged on the outer side of the end of the glass fiber inner layer in a sleeving mode and a first flange plate arranged on the outer side of the inserting cylinder and dividing the inserting cylinder into a fixed section and an inserting section. The reinforcing nails are arranged on the inserting cylinder and the connecting cylinder, the reinforcing nails, the inserting cylinder and the connecting cylinder are buried in the pipe body to form an integrated structure when glass fibers are wound, and meanwhile, the first flange plate and the second flange plate can resist higher traction force under the action of the reinforcing nails, so that the situation that the pipeline connecting effect is affected due to looseness is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of composite pipeline production, and specifically discloses a glass fiber reinforced plastic air duct. Background Art

[0002] FRP air duct is a product made of non-metallic composite materials. It is mainly made of resin, glass fiber and high-quality quartz sand by machine-controlled winding. It has the properties of FRP such as corrosion resistance, high strength, long life, easy and reliable installation, etc. It is widely used in petroleum, chemical, environmental protection, drainage, agricultural irrigation and other industries.

[0003] The end of the FRP air duct is usually provided with a limit platform. When the pipes are connected, a flange is installed on the inner side of the limit platform of the two pipes to be connected. After the two pipes are butt-jointed, the flanges on the two pipes are bolted together to connect the two pipes together. However, the traction force that the flange can withstand in this installation method is very limited. When subjected to a large traction force, the flange is easy to loosen, affecting the pipe connection performance. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a glass fiber reinforced plastic air duct, both ends of the duct are integrally provided with flanges, when two ducts are connected, the flanges are not easy to loosen, thus improving the connection performance of the ducts.

[0005] The purpose of the utility model is achieved through the following technical solutions: A glass fiber reinforced plastic air duct, comprising a plurality of pipe units connected end to end in sequence, wherein the pipe unit comprises a pipe body and a plug-in structure and a receiving structure respectively arranged at both ends of the pipe body;

[0006] The pipe body includes a glass fiber inner layer and a glass fiber outer layer; the plug-in structure includes a plug-in tube sleeved on the outside of the end of the glass fiber inner layer, and a first flange plate arranged on the outside of the plug-in tube and dividing the plug-in tube into a fixed section and a plug-in section; a plurality of reinforcing nails are circumferentially arranged on the outer wall of the fixed section, the glass fiber outer layer is wound around the glass fiber inner layer and the outside of the fixed section, and the reinforcing nails are buried in the glass fiber outer layer, and the end of the glass fiber inner layer and the plug-in section of one of the pipe units are both inserted in the receiving structure of another adjacent pipe unit.

[0007] Furthermore, the supporting structure includes a glass fiber outer sheath arranged at the end of the glass fiber outer layer, a connecting tube buried in the glass fiber outer sheath, and a second flange connected to the connecting tube; a plurality of reinforcing nails are circumferentially arranged on the outer wall of the connecting tube, and the reinforcing nails are buried in the glass fiber outer sheath; the end and the connecting section of the glass fiber inner layer of one of the pipe units are inserted into the glass fiber outer sheath of another adjacent pipe unit, and the first flange and the second flange are connected by bolts.

[0008] A glass fiber plug-in sleeve is wound around the outer side of the plug-in section, and the glass fiber plug-in sleeve is welded to the inner wall of the glass fiber outer sheath.

[0009] The first flange and the second flange are wrapped with an outer protective shell.

[0010] The outer protective shell includes an upper protective shell and a lower protective shell. Both the upper protective shell and the lower protective shell are provided with through holes, and bolts connecting the first flange and the second flange pass through the through holes.

[0011] The reinforcing nails are arranged vertically.

[0012] The inner diameter of the glass fiber outer sheath is greater than the inner diameter of the glass fiber inner layer, so that the inner walls of the two pipe units are level after being connected.

[0013] Compared with the prior art, this application has the following beneficial effects:

[0014] (1) The plug-in tube and the connecting tube of the utility model are provided with reinforcing nails. When the glass fiber is wound, the reinforcing nails, the plug-in tube and the connecting tube are buried in the pipe body to form an integrated structure. At the same time, through the action of the reinforcing nails, the first flange and the second flange can resist a stronger traction force to prevent loosening and affect the pipe connection effect.

[0015] (2) The utility model is provided with a glass fiber plug sleeve. When two pipes are connected, the glass fiber plug sleeve is welded to the inner wall of the glass fiber outer sheath, which can enhance the pipe connection performance and also achieve a better sealing effect.

[0016] Some additional features of the present application may be explained in the following description. Some additional features of the present application will be apparent to those skilled in the art by inspection of the following description and corresponding drawings or understanding of the production or operation of the embodiments. The features disclosed in the present application may be realized and achieved by practice or use of various methods, means and combinations of the specific embodiments described below. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The exemplary embodiments of the present application and their descriptions are used to explain the present application and do not constitute a limitation of the present application. In each figure, the same reference numeral represents the same component.

[0018] Figure 1 It is a cross-sectional view of the utility model.

[0019] Figure 2 for Figure 1 A magnified schematic diagram of center A.

[0020] Figure 3 It is a cross-sectional view of the plug-in structure of the utility model.

[0021] Figure 4 It is a cross-sectional view of the receiving structure of the utility model.

[0022] Figure 5 It is a front view of the outer protective shell of the utility model.

[0023] The figure numbers in the above drawings are: 1-pipe unit, 2-perforation, 3-upper protective shell, 4-lower protective shell, 5-glass fiber outer layer, 6-glass fiber inner layer, 7-plug-in tube, 8-reinforcement nail, 9-first flange, 10-glass fiber plug-in sleeve, 11-glass fiber outer sheath, 12-connecting tube, 13-second flange. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0025] It should be noted that if the description and claims of the present application and the above-mentioned drawings relate to the terms "first", "second", etc., they are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, if the terms "including" and "having" and any of their variations are involved, it is intended to cover non-exclusive inclusions, for example, the process, method, system, product or equipment that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0026] In this application, if the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. are involved, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0027] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0028] In addition, in this application, the terms "installed", "set", "provided with", "connected", "connected", "socketed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0029] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] Example

[0031] The present embodiment discloses a glass fiber reinforced plastic air duct, which includes a plurality of pipe units 1 connected end to end in sequence. The pipe unit 1 includes a pipe body and a plug-in structure and a receiving structure respectively arranged at both ends of the pipe body, that is, one end of the pipe body is a plug-in structure, and the other end thereof is a receiving structure.

[0032] Specifically, the pipe body includes a glass fiber inner layer 6 and a glass fiber outer layer 5. The plug-in structure includes a plug-in tube 7 and a first flange 9. The first flange 9 is arranged outside the plug-in tube 7, and the first flange 9 divides the plug-in tube 7 into a fixed section and a plug-in section. A plurality of reinforcing nails 8 are circumferentially arranged on the outer wall of the fixed section. The reinforcing nails 8 are arranged vertically. The plug-in tube 7 is sleeved on the outer side of the end of the glass fiber inner layer 6, and its fixed section faces the middle side of the pipe body. The glass fiber outer layer 5 is wound around the glass fiber inner layer 6 and the outer side of the fixed section, so that the reinforcing nails 8 are buried in the glass fiber outer layer 5.

[0033] The glass fiber inner layer 6 and the glass fiber outer layer 5 are both formed by winding glass fiber filaments wrapped with polyethylene material. In specific production, the glass fiber inner layer 6 is first wound by a winding device, and then a plug-in sleeve 7 is put on one end of the glass fiber inner layer 6, and the end of the plug-in sleeve 7 is flush with the end of the glass fiber inner layer 6. Then, the glass fiber filaments are wound around the outer side of the glass fiber inner layer 6, and the wound glass fiber filaments are covered on the fixed section of the plug-in sleeve 7 until the glass fiber outer layer 5 is formed. At this time, the reinforcing nails 8 are buried in the glass fiber outer layer 5, such as Figure 3 In the above manner, the glass fiber inner layer 6, the plug-in tube 7 and the glass fiber outer layer 5 form a whole, and the provision of the reinforcing nail 8 can further increase the traction force that the plug-in tube 7 and the first flange 9 can withstand, and prevent the plug-in tube 7 and the first flange 9 from loosening or detaching from the pipe body.

[0034] In addition, if Figure 4 As shown, the receiving structure includes a glass fiber outer sheath 11 arranged at the end of the glass fiber outer layer 5, a connecting tube 12 buried in the glass fiber outer sheath 11, and a second flange 13 connected to the connecting tube 12. Similarly, a plurality of reinforcing nails 8 are arranged circumferentially on the outer wall of the connecting tube 12, and the reinforcing nails 8 are arranged vertically and buried in the glass fiber outer sheath 11.

[0035] During specific production, as described above, the glass fiber inner layer 6 is first wound, and then the glass fiber outer layer 5 is wound on the outside of the glass fiber inner layer 6. When winding the glass fiber outer layer 5, the end of the glass fiber outer layer 5 needs to extend out of the end of the glass fiber inner layer 6, and the portion of the glass fiber outer layer 5 extending out of the glass fiber inner layer 6 is the above-mentioned glass fiber outer sheath 11. When the glass fiber outer layer 5 is wound to a certain thickness, the connecting tube 12 is sleeved on the outside of the end of the glass fiber outer layer 5, and then the glass fiber filaments are continued to be wound until the set thickness is reached to form the glass fiber outer layer 5 and the glass fiber outer sheath 11, at which time the reinforcing nails 8 are buried in the glass fiber outer sheath 11. After winding and forming, the glass fiber inner layer 6, the glass fiber outer layer 5 and the connecting tube 12 also form a whole, and coupled with the effect of the reinforcing nails 8, the connecting tube 12 and the second flange 13 can withstand greater traction.

[0036] When connecting, the end of the glass fiber inner layer 6 of one pipe unit 1 and the plug-in section of the plug-in tube 7 are inserted into the glass fiber outer sheath 11 of another adjacent pipe unit 1, and the first flange 9 and the second flange 13 are connected by bolts, and the adjacent two pipe units 1 are connected together. Figure 1 , 2 shown.

[0037] In a specific implementation, the inner diameter of the glass fiber outer sheath 11 is larger than the inner diameter of the glass fiber inner layer 6 so that the inner walls of the two pipe units 1 are level after being connected.

[0038] In addition, if Figure 3 As shown, a glass fiber plug sleeve 10 is arranged on the outside of the plug section, and the glass fiber plug sleeve 10 is also made of glass fiber wrapped with polyethylene material. When two pipe units 1 are connected, the glass fiber plug sleeve 10 on one pipe unit 1 is connected to the inner wall of the glass fiber outer sheath 11 of the other pipe unit 1 by welding, so that the connection between the two pipe units 1 is tighter and more reliable, and the sealing of the connection is improved.

[0039] like Figure 2 As shown, the outer sides of the first flange 9 and the second flange 13 are wrapped with an outer shell. Specifically, the outer shell includes an upper shell 3 and a lower shell 4, and both the upper shell 3 and the lower shell 4 are provided with a through hole 2, such as Figure 5 When connected, the upper shell 3 covers the upper part of the first flange 9 and the second flange 13, while the lower shell 4 covers the lower part of the first flange 9 and the second flange 13. The bolts connecting the first flange 9 and the second flange 13 also pass through the through holes 2 on the upper shell 3 and the lower shell 4 at the same time, so that the upper shell 3, the lower shell 4, the first flange 9 and the second flange 13 are fixed together.

[0040] It should be noted that all features disclosed in this specification, or steps in all methods or processes disclosed, except for mutually exclusive features and / or steps, can be combined in any manner.

[0041] In addition, the above specific embodiments are exemplary, and those skilled in the art can come up with various solutions inspired by the disclosure of the utility model, and these solutions also belong to the disclosure scope of the utility model and fall within the protection scope of the utility model. Those skilled in the art should understand that the utility model specification and its drawings are illustrative and do not constitute a limitation of the claims. The protection scope of the utility model is defined by the claims and their equivalents.

Claims

1. A glass fiber reinforced plastic air duct, comprising a plurality of pipe units (1) connected end to end in sequence, characterized in that: The pipeline unit (1) comprises a pipe body and a plug-in structure and a receiving structure respectively arranged at two ends of the pipe body; The pipe body comprises a glass fiber inner layer (6) and a glass fiber outer layer (5); the plug-in structure comprises a plug-in tube (7) sleeved on the outside of the end of the glass fiber inner layer (6), and a first flange (9) arranged on the outside of the plug-in tube (7) and dividing the plug-in tube (7) into a fixed section and a plug-in section; a plurality of reinforcing nails (8) are circumferentially arranged on the outer wall of the fixed section, the glass fiber outer layer (5) is wound around the glass fiber inner layer (6) and the outside of the fixed section, the reinforcing nails (8) are buried in the glass fiber outer layer (5), and the end of the glass fiber inner layer (6) and the plug-in section of one of the pipe units (1) are both inserted in the receiving structure of another adjacent pipe unit (1).

2. The glass fiber reinforced plastic air duct according to claim 1, characterized in that: The receiving structure comprises a glass fiber outer sheath (11) arranged at the end of the glass fiber outer layer (5), a connecting tube (12) embedded in the glass fiber outer sheath (11), and a second flange (13) connected to the connecting tube (12); a plurality of reinforcing nails (8) are arranged circumferentially on the outer wall of the connecting tube (12), and the reinforcing nails (8) are embedded in the glass fiber outer sheath (11); the end and the plug-in section of the glass fiber inner layer (6) of one of the pipe units (1) are both inserted into the glass fiber outer sheath (11) of another adjacent pipe unit (1), and the first flange (9) and the second flange (13) are connected by bolts.

3. The glass fiber reinforced plastic air duct according to claim 2, characterized in that: A glass fiber plug-in sleeve (10) is wound around the outer side of the plug-in section, and the glass fiber plug-in sleeve (10) is welded to the inner wall of the glass fiber outer sheath (11).

4. The glass fiber reinforced plastic air duct according to claim 3, characterized in that: The outer sides of the first flange (9) and the second flange (13) are wrapped with an outer protective shell.

5. The glass fiber reinforced plastic air duct according to claim 4, characterized in that: The outer protective shell comprises an upper protective shell (3) and a lower protective shell (4), and both the upper protective shell (3) and the lower protective shell (4) are provided with through holes (2), and bolts connecting the first flange (9) and the second flange (13) pass through the through holes (2).

6. The glass fiber reinforced plastic air duct according to claim 2, characterized in that: The reinforcing nails (8) are arranged vertically.

7. The glass fiber reinforced plastic air duct according to claim 5, characterized in that: The inner diameter of the glass fiber outer sheath (11) is greater than the inner diameter of the glass fiber inner layer (6), so that the inner walls of the two pipe units (1) are flush after being connected.

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