Air pipe flange connecting structure convenient to install

Abstract

The utility model relates to the technical field of air pipe flanges, and discloses an air pipe flange connecting structure convenient to install, which comprises two pipe bodies, flanges are fixedly installed at the connecting ends of the two pipe bodies, the side faces, close to each other, of the two flanges are in butt joint, and connected notches are formed in the two sides and the middle of the outer side of each flange. Two flanges are arranged at one ends of the two pipe bodies in a butt joint mode, notches are formed in the two sides of the two flanges in a butt joint mode, a connecting piece is clamped between the two corresponding notches in the two sides of the two flanges, the shape of the connecting piece is matched with the shape of the two notches which are connected in a butt joint mode, and lantern rings are connected to the two flanges in a sleeved mode. The connecting piece is clamped in the aligned notches of the two flanges and connected through the first bolts, the two flanges are sleeved with the lantern ring, the lantern ring is fixed through the second bolts, and therefore the connecting piece can be prevented from loosening in the notches, and the connecting stability of the two flanges can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of air duct flanges, in particular to an air duct flange connection structure which is easy to install. Background Art

[0002] An air duct is a piping system used for air transportation and distribution. According to the cross-sectional shape, the air duct can be divided into circular air duct, rectangular air duct, oblate air duct and the like. Currently, in the process of connecting the air duct, the flanges at both ends of the air duct are mostly fixedly connected by bolts. However, this connection method is relatively simple, and the bolts are prone to loosening after long-term use. Once the bolts are loosened, the tightness of the connection between the two flanges will be affected. In this way, leakage will occur when the airflow flows in the air duct, thereby affecting the circulation of the airflow inside the air duct. For this reason, the present application proposes an air duct flange connection structure that is easy to install. Utility Model Content

[0003] In order to solve the problems raised in the above-mentioned background technology, the utility model provides the following technical solutions: a duct flange connection structure that is easy to install, including two pipe bodies, flanges are fixedly installed at the connecting ends of the two pipe bodies, the two flanges are butt-jointed at the sides close to each other, connected grooves are provided on both sides and in the middle of the outer sides of the two flanges, a connecting piece is clamped between the two corresponding grooves on both sides of the two flanges, the shape of the connecting piece is adapted to the shape of the two butt-jointed grooves, and rings are sleeved on the two flanges.

[0004] Furthermore, each notch is provided with a first screw hole that passes through the flange, and each connecting piece is provided with a second screw hole on both sides. When the connecting piece is engaged in the two notches, the second screw hole on the connecting piece is aligned with the first screw hole in the notch, and a first bolt is inserted between the corresponding first screw hole and the second screw hole.

[0005] Furthermore, screw grooves are provided at the top and bottom of the two flanges, and two third screw holes are provided at the top and bottom of the ring. A second bolt is threadedly inserted in each third screw hole, and each second bolt passes through the third screw hole and is threadedly inserted in the corresponding screw grooves at the top and bottom of the two flanges.

[0006] Furthermore, the diameter of the outer arc surface of the connector is the same as the outer ring diameter of the flange.

[0007] Furthermore, when the connecting piece is engaged in the two notches, the outer walls on both sides of the connecting piece are flush with the outer walls of the two flanges, and the center of the arc of the side wall of the connecting piece and the center of the flange are located on the same horizontal axis.

[0008] Furthermore, a sealing gasket is arranged between the two flanges.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] First, connect the flanges at one end of the two pipe bodies together so that the notches on both sides of the two flanges are aligned. Then, engage the connector in the aligned notches of the two flanges and use the first bolt to complete the connection. Then, put the ring on the two flanges and use the second bolt to fix the position of the ring, thereby preventing the connector from loosening in the notch, thereby increasing the stability of the connection between the two flanges. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a schematic diagram of a partial cross-sectional structure of the utility model;

[0014] Figure 3 It is a side structural diagram of the connection between the flange and the sleeve of the utility model;

[0015] Figure 4 It is an enlarged structural schematic diagram of A of the utility model;

[0016] Figure 5 It is a structural schematic diagram of the flange of the utility model;

[0017] Figure 6 It is a structural schematic diagram of the connector of the utility model;

[0018] In the figure: 1, pipe body; 2, flange; 3, missing groove; 4, first screw hole; 5, connecting piece; 6, second screw hole; 7, first bolt; 8, screw groove; 9, collar; 10, third screw hole; 11, second bolt. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0020] Depend on Figure 1-6The utility model comprises two pipe bodies 1, the connecting ends of the two pipe bodies 1 are fixedly mounted with flanges 2, the sides of the two flanges 2 close to each other are butt-jointed, both sides and the middle of the outer sides of the two flanges 2 are provided with connected notches 3, a connector 5 is engaged between the two corresponding notches 3 on both sides of the two flanges 2, the shape of the connector 5 is adapted to the shape of the two notches 3 butt-jointed, a collar 9 is sleeved on the two flanges 2, firstly, the flanges 2 at one end of the two pipe bodies 1 are butt-jointed together, so that the notches 3 on both sides of the two flanges 2 are aligned, Then, the connecting piece 5 is engaged in the aligned notches 3 of the two flanges 2, and the first bolt 7 is used to penetrate the first screw hole 4 and the second screw hole 6 to fix the connecting piece 5 in the two notches 3, thereby completing the docking of the two flanges 2, and then the ring 9 is put on the two flanges 2, and the second bolt 11 is used to penetrate the third screw hole 10 and threadedly inserted into the screw grooves 8 at the top and bottom of the flange 2, so that the position of the ring 9 can be fixed, and the ring 9 can prevent the connecting piece 5 from loosening in the notch 3, thereby increasing the stability of the connection between the two flanges 2.

[0021] At the same time, each notch 3 is provided with a first screw hole 4 that passes through the flange 2, and each connecting piece 5 is provided with a second screw hole 6 on both sides. When the connecting piece 5 is engaged in the two notches 3, the second screw hole 6 on the connecting piece 5 is aligned with the first screw hole 4 in the notch 3, and a first bolt 7 is inserted through the corresponding first screw hole 4 and second screw hole 6. The connecting piece 5 can be fixed in the notch 3 by the first bolt 7, thereby completing the docking of the two flanges 2 through the two connecting pieces 5.

[0022] In addition, screw grooves 8 are provided at the top and bottom of the two flanges 2, and two third screw holes 10 are provided at the top and bottom of the collar 9. A second bolt 11 is threadedly inserted in each third screw hole 10. Each second bolt 11 passes through the third screw hole 10 and is threadedly inserted in the corresponding screw grooves 8 at the top and bottom of the two flanges 2 respectively. The collar 9 can be fixedly sleeved on the two flanges 2 through the second bolts 11.

[0023] Furthermore, the diameter of the outer arc surface of the connector 5 is the same as the outer diameter of the flange 2 , so that when the connector 5 is located in the notch 3 , the outer arc surface of the connector 5 is flush with the outer ring of the flange 2 , so that the collar 9 can be mounted on the two flanges 2 .

[0024] Furthermore, when the connector 5 is engaged in the two notches 3 , the outer walls of the connector 5 on both sides are flush with the outer walls of the two flanges 2 , and the center of the arc of the side wall of the connector 5 and the center of the flange 2 are located on the same horizontal axis.

[0025] Furthermore, a sealing gasket is arranged between the two flanges 2 .

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A duct flange connection structure that is easy to install, comprising two duct bodies (1), Features: The connecting ends of the two pipe bodies (1) are fixedly mounted with flanges (2), the sides of the two flanges (2) close to each other are butted together, both sides and the middle of the outer sides of the two flanges (2) are provided with connected notches (3), a connecting piece (5) is clamped between two corresponding notches (3) on both sides of the two flanges (2), the shape of the connecting piece (5) is adapted to the shape of the two notches (3) butted together, and a collar (9) is sleeved on the two flanges (2).

2. According to claim 1, a duct flange connection structure that is easy to install, Features: A first screw hole (4) penetrating the flange (2) is provided inside each of the notches (3), and second screw holes (6) are provided on both sides of each of the connectors (5). When the connectors (5) are engaged in the two notches (3), the second screw holes (6) on the connectors (5) are aligned with the first screw holes (4) in the notches (3), and a first bolt (7) is inserted through the corresponding first screw holes (4) and second screw holes (6).

3. The air duct flange connection structure that is easy to install according to claim 1, Features: The top and bottom of the two flanges (2) are provided with screw grooves (8), the top and bottom of the collar (9) are provided with two third screw holes (10), each of the third screw holes (10) is threadedly inserted with a second bolt (11), and each second bolt (11) passes through the third screw hole (10) and is threadedly inserted into the corresponding screw grooves (8) at the top and bottom of the two flanges (2).

4. The air duct flange connection structure that is easy to install according to claim 1, Features: The diameter of the outer arc surface of the connecting piece (5) is the same as the outer ring diameter of the flange (2).

5. The air duct flange connection structure that is easy to install according to claim 4, Features: When the connecting piece (5) is engaged in the two notches (3), the outer walls on both sides of the connecting piece (5) are flush with the outer walls of the two flanges (2), and the center of the arc of the side wall of the connecting piece (5) and the center of the flange (2) are located on the same horizontal axis.

6. The air duct flange connection structure that is easy to install according to claim 1, Features: A sealing gasket is arranged between the two flanges (2).

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