Pipe fitting with self-locking flange

Abstract

The utility model relates to a pipe fitting with self-locking flanges, which comprises a pipe body, flanges are respectively arranged at two ends of the pipe body, each flange comprises a connecting body and a flange body, the connecting bodies are connected with the pipe body, the connecting bodies are enclosed at the end parts of the pipe body, and the flange bodies are perpendicular to the pipe body and are of a square structure. A plurality of screw holes are formed in the flange body; the connecting body and the flange body are both connected with the pipe body through hot-melt extrusion molding, a plurality of through holes are formed in the connecting part of the pipe body and the connecting body, and the connecting body is filled into the through holes during hot-melt extrusion to form a fixing pin. The square flanges are arranged at the two ends of the pipe fitting, so that rectangular pipes can be conveniently connected. Reliable connection between the flange and the pipe body is achieved through the hot melt extrusion technology, and connection is more reliable due to the fact that the fixing pin structure is additionally arranged. In addition, a sealing ring is arranged in the flange, so that sealing between pipe fittings after connection is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe materials, in particular to a pipe fitting with a self-locking flange.

Background Art

[0002] In environmental protection ventilation ducts, rectangular pipes are usually used. Since rectangular pipes are not like circular pipes, sockets and spigots can be set at both ends of circular pipes to achieve connection. At present, the connection between rectangular pipes mostly adopts welding or hoop methods. The welding method is cumbersome to operate and prone to welding holes; the hoop method is relatively simple to operate, but the connection is not reliable.

Content of the Utility Model

[0003] To solve the above problems, the purpose of the utility model is to provide a pipe fitting with a self-locking flange that can be conveniently connected and has a reliable connection.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is: a pipe fitting with a self-locking flange, including a pipe body, flanges are respectively arranged at both ends of the pipe body. The flange includes a connecting body connected to the pipe body and a flange body. The connecting body encloses the end of the pipe body. The flange body is perpendicular to the pipe body and has a square structure. A plurality of screw holes are arranged in the flange body; both the connecting body and the flange body are connected to the pipe body by hot melt extrusion molding. In the part where the pipe body is connected to the connecting body, a plurality of through holes are arranged. When the connecting body is hot melt extruded, it fills into the through holes to form fixing pins.

[0005] The pipe fitting with a self-locking flange in the utility model is further set as: a groove for placing a sealing ring is arranged in the flange body. The groove is located on the outer side surface of the flange body and forms a continuous square ring.

[0006] The pipe fitting with a self-locking flange in the utility model is further set as: the groove is a semi-circular groove.

[0007] The pipe fitting with a self-locking flange in the utility model is further set as: the screw holes are located on the peripheral edge of the flange body, and screw holes are respectively arranged in each side of the flange body.

[0008] Compared with the prior art, the utility model has the following beneficial effects: For the above-mentioned pipe fitting with a self-locking flange, square flanges are arranged at both ends of the pipe fitting, which can facilitate the connection between pipe fittings. Through the hot melt extrusion technology, a reliable connection between the flange and the pipe body is achieved. With the additional structure of fixing pins, the connection is more reliable. In addition, a sealing ring is arranged in the flange to achieve the sealing between pipe fittings after connection.

Description of the Drawings

[0009] Figure 1 It is a structural schematic diagram of the present utility model.

[0010] Figure 2 is Figure 1 a cross-sectional structural schematic diagram of

[0011] In the figure: 1, pipe body; 2, connecting body; 3, flange body; 4, screw holes; 5, groove; 6, through hole; 7, fixing pin.

Specific Embodiment

[0012] The following further describes in detail a pipe fitting with a self-locking flange according to the present utility model through specific embodiments.

[0013] As shown in Figure 1 , Figure 2 , a pipe fitting with a self-locking flange includes a pipe body 1. Flanges are respectively arranged at both ends of the pipe body 1. The flange includes a connecting body 2 connected to the pipe body 1 and a flange body 3. The connecting body 2 encloses the end of the pipe body 1. The flange body 3 is arranged perpendicular to the pipe body 1 and has a square structure. A plurality of screw holes 4 are arranged in the flange body 3. The screw holes 4 are located on the outer periphery of the flange body 3, and screw holes 4 are respectively arranged in each side of the flange body 3. The connecting body 2 and the flange body 3 are both connected to the pipe body 1 by hot melt extrusion molding. In the part where the pipe body 1 is connected to the connecting body 2, a plurality of through holes 6 are provided. When the connecting body 2 is hot melt extruded, it fills into the through holes 6 to form fixing pins 7.

[0014] As a preferred solution, a groove 5 for placing a sealing ring is provided in the flange body 3. The groove 5 is located on the outer side surface of the flange body 3 and forms a continuous square ring. The groove 5 is a semi-circular groove 5.

[0015] The working principle of the present utility model is: when the pipe fittings are connected, the sealing ring is placed in the groove 5, adjacent pipe fittings are aligned with each other, so that the sealing ring is embedded in the groove 5, and then screws are used to connect the adjacent flange bodies 3, thereby realizing the connection between the pipe fittings. The square flanges are arranged at both ends of the pipe fittings, which can facilitate the connection between the pipe fittings. And a sealing ring is provided in the flange, realizing the sealing between the pipe fittings after connection.

[0016] The above embodiments only illustrate the principle and efficacy of the present invention creatively and some applied embodiments, rather than limiting the present utility model; it should be noted that for those of ordinary skill in the art, without departing from the creative concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model.

Claims

1. A pipe fitting with a self-locking flange, comprising a pipe body, characterized in that: Flanges are respectively arranged at both ends of the pipe body. The flange includes a connecting body connected to the pipe body and a flange body. The connecting body encloses the end of the pipe body. The flange body is arranged perpendicular to the pipe body and has a square structure. A plurality of screw holes are arranged in the flange body. Both the connecting body and the flange body are connected to the pipe body by hot melt extrusion molding. In the part where the pipe body is connected to the connecting body, a plurality of through holes are provided. When the connecting body is hot melt extruded, it fills into the through holes to form fixing pins.

2. The pipe fitting with a self-locking flange according to claim 1, characterized in that: A groove for placing a sealing ring is provided in the flange body. The groove is located in the outer side surface of the flange body and forms a continuous square ring.

3. The pipe fitting with a self-locking flange according to claim 2, characterized in that: The groove is a semi-circular groove.

4. A pipe fitting with a self-locking flange as claimed in claim 1 or 2, characterized in that: The screw holes are located on the peripheral edge of the flange body, and screw holes are respectively arranged in each side of the flange body.

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