A helically wound pipe connected with metal fasteners

Abstract

This utility model discloses a spiral tube connected by metal fasteners, including a hollow wall tube integrally formed by extrusion. The hollow wall tube is composed of a base plate part and a U-shaped arc plate part. The U-shaped arc plate part is fastened to the middle of the base plate part to form a hollow wall tube with two wing plates. One wing plate is provided with an inner L-shaped butt stop, and the other wing plate is provided with an outer L-shaped butt stop that matches the inner L-shaped butt stop. The outer end of the outer L-shaped butt stop is provided with a T-shaped groove. A metal connecting fastener of the same length as the hollow wall tube is inserted into the T-shaped groove. An anti-detachment plug groove is provided at the inner end of the corresponding inner L-shaped butt stop. When the hollow wall tubes are spirally assembled, the metal connecting fastener is inserted into the corresponding anti-detachment plug groove and squeezed to fasten, so that the adjacent assembled hollow wall tubes 1 are continuously wound to form a spiral tube.

Description

Technical Field

[0001] This utility model relates to the field of spiral wound tubes, specifically to a spiral wound tube connected by metal fasteners. Background Technology

[0002] Spiral wound pipes are suitable for municipal drainage, building outdoor drainage, buried farmland drainage, industrial sewage discharge, road drainage, sewage treatment plants, sports field and square drainage projects, and electrical and telecommunications engineering. Spiral wound pipes are generally large-diameter pipes, unlike commonly used PVC pipes which are formed in one piece. For the production of large-diameter spiral wound pipes, due to equipment and process limitations, it is difficult to form them in one piece. It is necessary to continuously spirally splice a pre-produced hollow wall pipe to form the spiral wound pipe. Currently, heat fusion is usually used to connect adjacent hollow wall pipes into one piece, but this method is cumbersome. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a spiral wound tube connected by metal fasteners, which solves the problem that the current hollow wall tubes mainly use hot melt connection to form spiral wound tubes, which is complicated and the connection is not firm.

[0004] This utility model is achieved through the following technical solution:

[0005] A spiral tube connected by metal fasteners includes an extruded hollow wall tube, which is composed of a base plate and a U-shaped arc plate. The U-shaped arc plate is fastened to the middle of the base plate to form a hollow wall tube with two wing plates. One wing plate has an inner L-shaped butt stop, and the other wing plate has an outer L-shaped butt stop that matches the inner L-shaped butt stop. The outer end of the outer L-shaped butt stop has a T-shaped groove. A metal connecting fastener of the same length as the hollow wall tube is inserted into the T-shaped groove. An anti-detachment plug groove is provided at the inner end of the corresponding inner L-shaped butt stop. When the hollow wall tubes are spirally assembled, the metal connecting fastener is inserted into the corresponding anti-detachment plug groove and pressed to fasten, so that the adjacent assembled hollow wall tubes are continuously wound to form a spiral tube.

[0006] Furthermore, a sealing adhesive is applied to the outer L-shaped butt joint or the inner L-shaped butt joint; during the spiral assembly of the hollow wall tube, adjacent flanges are bonded together through the outer L-shaped butt joint and the inner L-shaped butt joint to form a spiral tube.

[0007] Furthermore, the metal connecting fastener has a long strip structure, with a T-shaped insert at the bottom that matches the T-shaped groove, and a tapered buckle at the top that matches the anti-detachment plug groove.

[0008] Furthermore, the sealing adhesive is made of urea-formaldehyde resin adhesive, polyvinyl acetate adhesive, polyacrylic resin adhesive, polyacrylic resin, or polyurethane adhesive.

[0009] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0010] This utility model relates to a spiral tube connected by metal fasteners. The main connection between hollow wall tubes is that the metal fasteners are inserted into the corresponding anti-detachment plug slots for a secure connection. If the metal fasteners are integrated with the hollow wall tubes, the connection strength is poor due to the limited number of connection points between the metal fasteners and the hollow wall tubes, resulting in an unstable connection. Furthermore, if the metal fasteners are integrated with the hollow wall tubes, they are also prone to breakage during continuous production due to the limited connecting material.

[0011] The inner L-shaped butt joint and the outer L-shaped butt joint on the two flanges of the hollow wall tube can be connected to each other to provide an auxiliary connection and improve the sealing performance of the spiral tube. Attached Figure Description

[0012] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0013] Figure 1 This is a schematic diagram of a spiral tube structure connected by metal fasteners according to the present invention.

[0014] Figure 2 This is a cross-sectional view of a spiral wound tube connected by metal fasteners according to this utility model.

[0015] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0016] Figure 4 This is a schematic diagram of the cross-sectional structure of the hollow wall tube of this utility model.

[0017] Figure 5 This is a schematic diagram of the cross-sectional structure of the hollow wall tube after the installation of the metal connecting fasteners.

[0018] Figure 6 This is a structural schematic diagram of the metal connecting fastener of this utility model.

[0019] The attached diagram shows the markings and corresponding component names:

[0020] 1-Hollow wall tube, 2-T-shaped groove, 3-Base plate part, 4-U-shaped arc plate part, 5-Wing plate, 6-Inner L-shaped butt stop, 7-Outer L-shaped butt stop, 8-T-shaped insert, 9-Metal connecting fastener, 10-Anti-detachment plug groove, 11-Conical strip buckle. Detailed Implementation

[0021] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0023] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the 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 orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0024] In the description of this invention, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating a connection between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0025] Example

[0026] like Figure 1-6As shown, a spiral wound tube connected by metal fasteners includes a hollow wall tube 1 integrally formed by extrusion. The hollow wall tube 1 is made of PVC or high-density polyethylene (HDPE) material as needed, integrally formed by extrusion through a mold. The finished hollow wall tube 1 is then used to wind different diameter molds to prepare a spiral wound tube, similar to a rope tightly wound on the mold tube. The winding length is corresponding to the required length of the spiral wound tube. The hollow wall tube 1 is composed of a base plate part 3 and a U-shaped arc plate part 4. The U-shaped arc plate part 4 and the base plate part 3 form a cavity structure. The cavity structure can reduce the weight of the spiral wound tube on the one hand, and enhance the structure of the spiral wound tube on the other hand. For strength, the U-shaped arc plate portion 4 is fastened to the middle of the base plate portion 3 to form a hollow wall tube 1 with two wing plates 5. One wing plate 4 has an inner L-shaped butt stop 6, and the other wing plate 4 has an outer L-shaped butt stop 7 that matches the inner L-shaped butt stop 6. The outer end of the outer L-shaped butt stop 7 has a T-shaped groove 2. A metal connecting fastener 9 of the same length as the hollow wall tube 1 is inserted into the T-shaped groove 2. An anti-detachment plug groove 10 is provided at the inner end of the corresponding inner L-shaped butt stop 6. When the hollow wall tubes 1 are spirally assembled, the metal connecting fastener 9 is inserted into the corresponding anti-detachment plug groove 10 and pressed to fasten, so that the adjacent assembled hollow wall tubes 1 are continuously wound to form a wound tube. After the hollow wall tube 1 is extruded and formed, the worker inserts the metal connecting fastener 9 into the T-shaped groove 2 to process different models of wound tubes on the production line.

[0027] like Figure 3 As shown, sealing adhesive is applied to the outer L-shaped butt joint 7 or the inner L-shaped butt joint 6. Before assembling the spiral tube, sealing adhesive is applied to the outer L-shaped butt joint 7 or the inner L-shaped butt joint 6 using an adhesive applicator. During the spiral assembly of the hollow wall tube 1, adjacent flanges 4 are bonded together through the outer L-shaped butt joint 7 and the inner L-shaped butt joint 6 to form the spiral tube.

[0028] like Figure 6 As shown, the metal connecting fastener 9 is a long strip structure. The metal connecting fastener 9 is generally made of copper or aluminum alloy. With a certain strength, it can also deform together with the hollow wall tube 1 when it is wound. Other metal materials with similar properties can also be used. The bottom of the metal connecting fastener 9 is provided with a T-shaped insert 8 that matches the T-shaped groove 2, and the top of the metal connecting fastener 9 is provided with a conical strip buckle 11 that matches the anti-detachment plug groove 10.

[0029] The sealing adhesive is made of urea-formaldehyde resin, polyvinyl acetate, polyacrylic acid resin, polyacrylic acid resin, or polyurethane. The sealing adhesive primarily serves a sealing function, but also acts as an adhesive.

[0030] like Figure 1-6As shown, this utility model discloses a spiral tube connected by metal fasteners. After the hollow wall tube 1 is extruded, the worker inserts the metal fasteners 9 into the T-shaped grooves 2. The two wing plates 4 on the hollow wall tube 1 are connected to each other. The main connection between the hollow wall tubes 1 is that the metal fasteners 9 are inserted into the corresponding anti-detachment plug grooves 10 for a secure connection. If the metal fasteners 9 are integrated with the hollow wall tube 1, the connection strength is poor due to the small number of connection parts between the metal fasteners 9 and the hollow wall tube 1, resulting in an unstable connection. In the continuous production process, the metal fasteners 9 are also prone to breakage due to the small amount of connecting material.

[0031] The inner L-shaped butt joint 6 and the outer L-shaped butt joint 7 on the two flanges of the hollow wall tube can be connected to each other, which can play an auxiliary connection role and improve the sealing performance of the spiral tube.

[0032] like Figure 1-6 As shown, this utility model discloses a spiral wound tube connected by metal fasteners. The hollow wall tube 1 is integrally formed by extrusion through a mold. The processed hollow wall tubes 1 are bundled together. When further processing into spiral wound tubes is required, a corresponding roller mold is selected according to the diameter of the spiral wound tube, and metal connecting fasteners 9 are pre-installed at corresponding positions on the hollow wall tube 1. The hollow wall tube 1 is wound around the roller mold. During the winding process, a gluing machine applies sealing adhesive to the mating surface of the hollow wall tube 1. The roller mold rotates continuously, and the hollow wall tube 1 is continuously wound around the roller mold. Adjacent hollow wall tubes 1 are directly connected to the anti-detachment plug groove 10 through the metal connecting fasteners 9. After the connection, the interface is completely connected under the extrusion of the outer roller mold. In this way, the spiral wound tube is continuously processed and manufactured.

[0033] The above technical solution facilitates the production of spiral wound tubes, allowing them to be processed into various sizes. Due to the use of metal fasteners, the spiral wound tubes are less prone to cracking later on. Simultaneously, the metal fasteners 9 also serve as reinforcing ribs for the spiral wound tubes.

[0034] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A spool of pipe connected with metal fasteners, characterized in that: The product includes a hollow wall tube (1) integrally formed by extrusion. The hollow wall tube (1) is composed of a base plate portion (3) and a U-shaped arc plate portion (4). The U-shaped arc plate portion (4) is fastened to the middle of the base plate portion (3) to form a hollow wall tube (1) with two wing plates (5). One wing plate (4) is provided with an inner L-shaped butt stop (6), and the other wing plate (4) is provided with an outer L-shaped butt stop (7) that matches the inner L-shaped butt stop (6). The outer end of the stop (7) is provided with a T-shaped groove (2), and a metal connecting fastener (9) of the same length as the hollow wall tube (1) is inserted into the T-shaped groove (2). The inner end of the corresponding inner L-shaped stop (6) is provided with an anti-detachment plug groove (10). When the hollow wall tubes (1) are spirally assembled with each other, the metal connecting fastener (9) is inserted into the corresponding anti-detachment plug groove (10) and squeezed to fasten, so that the adjacent assembled hollow wall tubes (1) are continuously wrapped to form a winding tube.

2. The spiral wound tube connected with metal fasteners according to claim 1, characterized in that: Sealing adhesive is applied to the outer L-shaped butt joint (7) or the inner L-shaped butt joint (6); during the spiral assembly of the hollow wall tube (1), adjacent wing plates (4) are bonded together through the outer L-shaped butt joint (7) and the inner L-shaped butt joint (6) to form a spiral tube.

3. A spiral wound tube connected with metal fasteners according to claim 2, characterized in that: The metal connecting fastener (9) has a long strip structure. The bottom of the metal connecting fastener (9) is provided with a T-shaped insert (8) that matches the T-shaped groove (2), and the top of the metal connecting fastener (9) is provided with a conical strip buckle (11) that matches the anti-detachment plug groove (10).

4. A spiral wound tube connected with metal fasteners according to claim 3, characterized in that: The sealing adhesive is made of urea-formaldehyde resin adhesive, polyvinyl acetate adhesive, polyacrylic resin adhesive, polyacrylic resin, or polyurethane adhesive.

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