Spiral duct with angle convenient to adjust

Abstract

The utility model relates to the technical field of spiral air pipes, in particular to a spiral air pipe convenient for angle adjustment, which comprises a spiral straight pipe and a spiral bent pipe, connecting rings are sleeved and fixed at close ends of the spiral straight pipe and the spiral bent pipe, the two connecting rings are respectively and rotatably connected to two sides of a connecting ring, a reserved groove is arranged on the outer ring surface of the connecting ring, and the reserved groove is communicated with the spiral straight pipe and the spiral bent pipe. Screw rods are connected to the two side walls, distributed in parallel, of the reserved groove in a threaded mode, and one ends of the two sets of screw rods are inserted into the surfaces of the two connecting rings correspondingly. The spiral air pipe with the angle convenient to adjust has the advantages that through the design of the connecting ring, the joining ring and the traction ring, the spiral straight pipe and the spiral bent pipe are rotatably connected, and the direction of a pipe opening of the spiral bent pipe can be conveniently adjusted according to needs.

Description

Technical Field

[0001] The utility model relates to the field of spiral air ducts, in particular to a spiral air duct with an easily adjustable angle. Background Art

[0002] In existing ventilation systems, spiral ducting is widely used due to its compact structure, high strength, light weight, and excellent ventilation performance. However, in practice, the installation and layout of spiral ducting often require adjustment based on the specific space and environment, especially the orientation of the spiral bend to meet different ventilation requirements. Traditional spiral ducting connections are often fixed and difficult to adjust. Once installed, it is difficult to change the orientation of the spiral bend, which greatly limits the applicability of spiral ducting in complex environments.

[0003] To address this issue, some adjustable spiral ducts have appeared on the market. However, these products are often complex in structure, cumbersome to install and adjust, and expensive. Therefore, how to provide a spiral duct with a simple structure, easy angle adjustment, and reasonable cost has become an urgent problem in the current market. Utility Model Content

[0004] The purpose of the present invention is to provide a spiral air duct with an easily adjustable angle, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a spiral air duct with easy angle adjustment, comprising a spiral straight pipe and a spiral curved pipe, wherein the ends of the spiral straight pipe and the spiral curved pipe close to each other are both sleeved and fixed with connecting rings, and the two connecting rings are respectively rotatably connected to the two sides of the connecting rings, and a reserved groove is provided on the outer ring surface of the connecting ring, and screws are screwed on the two parallel side walls of the reserved groove, and one end of the two sets of screws are respectively inserted into the surface of the two connecting rings.

[0006] Preferably, the connecting ring is an L-shaped circular ring structure, the inner ring diameter of one end of the connecting ring close to the connecting ring is smaller than the inner ring diameter of the spiral straight tube, and a plug tube is integrally formed in the inner ring opening of one end of the connecting ring, and the plug tube is inserted into the spiral straight tube.

[0007] Preferably, a sealing ring is sleeved and fixed on the outer ring surface of the plug tube, and the sealing ring is clamped between the plug tube and the spiral straight tube to generate elastic deformation.

[0008] Preferably, a limiting groove is provided at one end of the connecting ring, and the limiting groove is an annular groove with a "convex"-shaped cross section. A traction ring is rotatably connected inside the limiting groove, and the traction ring is a circular ring plate with a "convex"-shaped cross section. One end of the traction ring is fixed to the surface of the connecting ring.

[0009] Preferably, the connecting ring is an annular plate structure, the inner ring diameter of the connecting ring is equal to the inner ring diameter of the plug tube, the outer ring diameter of the connecting ring is equal to the outer ring diameter of the connecting ring, and the reserved groove is an annular groove.

[0010] Preferably, screw holes are provided on the two parallel side walls of the reserved groove, the screw rod passes through and is screwed into the screw holes, one end of the screw rod is inserted into the positioning groove, the positioning groove is provided on the surface of the connecting ring, and there are multiple positioning grooves, and the multiple positioning grooves are distributed in a circle with the plug tube as the central axis, and the number of positioning grooves is more than the number of screw rods.

[0011] Preferably, a rubber cover is fixed on one side wall of the reserved groove, and the rubber cover covers the notch of the reserved groove.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The spiral air duct proposed by the present invention is easy to adjust the angle. Through the design of the connecting ring, the linking ring and the traction ring, a rotatable connection between the spiral straight pipe and the spiral bent pipe is achieved, so that the direction of the pipe mouth of the spiral bent pipe can be conveniently adjusted as needed. At the same time, this connection method has a simple structure and is easy to install and disassemble, which greatly reduces the difficulty of installation and adjustment. Through the design of the reserved groove, the screw and the positioning groove, after the pipe mouth direction of the spiral bent pipe is adjusted, the connecting ring and the linking ring can be fixed together by screwing the screw, thereby achieving precise positioning and stable fixation of the spiral bent pipe. This design not only improves the stability of the spiral air duct, but also avoids the decrease in ventilation effect caused by changes in the pipe mouth direction during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a side view of the structure of the utility model;

[0016] Figure 3 for Figure 2 Structural cross-section view at AA in the middle;

[0017] Figure 4 for Figure 3 A schematic diagram of the structure at center A;

[0018] Figure 5 This is a schematic diagram of the connection structure of the connecting ring and the linking ring of the utility model;

[0019] Figure 6 This is a schematic diagram of the structure of the connecting ring of the utility model;

[0020] Figure 7 This is a schematic diagram of the connecting ring structure of the utility model.

[0021] In the figure: spiral straight pipe 1, spiral bent pipe 2, connecting ring 3, plug pipe 4, sealing ring 5, limit groove 6, traction ring 7, connecting ring 8, reserved groove 9, screw hole 10, positioning groove 11, screw 12, rubber cover 13. DETAILED DESCRIPTION

[0022] In order to clearly and completely describe the purpose and technical solution of the present invention and make its advantages more clearly understood, the following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention and are not intended to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-Figure 7 The utility model provides a technical solution: a spiral air duct which is easy to adjust the angle, comprising a spiral straight tube 1 and a spiral bent tube 2. The spiral straight tube 1 and the spiral bent tube 2 are both sleeved and fixed at one end thereof with a connecting ring 3, and the two connecting rings 3 are rotatably connected to the two sides of the connecting ring 8 respectively. The connecting ring 3 has an "L"-shaped circular ring structure in cross section, and the inner ring diameter of the connecting ring 3 near the connecting ring 8 is smaller than the inner ring diameter of the spiral straight tube 1. A plug tube 4 is integrally formed in the inner ring opening of one end of the connecting ring 3, and the plug tube 4 is inserted into the spiral straight tube 1. A sealing ring 5 is sleeved and fixed on the outer ring surface of the plug tube 4, and the sealing ring 5 is clamped between the plug tube 4 and the spiral straight tube 1 to produce elastic deformation; a limiting groove 6 is provided at one end of the connecting ring 3, and the limiting groove 6 is an annular groove with a "convex"-shaped fracture. A traction ring 7 is rotatably connected to the inside of the limiting groove 6. The traction ring 7 is a circular ring plate with a "convex"-shaped cross section, and one end of the traction ring 7 is fixed to the surface of the connecting ring 8.

[0024] Buckle the two connecting rings 3 on the close ends of the spiral straight pipe 1 and the spiral bent pipe 2 respectively, and weld the two connecting rings 3 on the spiral straight pipe 1 and the spiral bent pipe 2 respectively. At this time, the two plug tubes 4 are respectively inserted into the close pipe openings of the spiral straight pipe 1 and the spiral bent pipe 2. Since the spiral straight pipe 1 and the spiral bent pipe 2 are connected to the connecting ring 8 through the traction ring 7 at this time, the spiral straight pipe 1 and the spiral bent pipe 2 can be rotated to adjust the direction of the pipe opening of the spiral bent pipe 2.

[0025] The connecting ring 8 is an annular plate structure, the inner ring diameter of the connecting ring 8 is equal to the inner ring diameter of the plug tube 4, the outer ring diameter of the connecting ring 8 is equal to the outer ring diameter of the connecting ring 3, and the reserved groove 9 is an annular groove; the outer ring surface of the connecting ring 8 is provided with a reserved groove 9, and the two parallel side walls of the reserved groove 9 are screwed with screws 12, and one end of the two groups of screws 12 are respectively inserted into the surfaces of the two connecting rings 3; screw holes 10 are provided on the two parallel side walls of the reserved groove 9, and the screws 12 pass through and are screwed into the screw holes 10, and one end of the screw 12 is inserted into the positioning groove 11, and the positioning groove 11 is provided on the surface of the connecting ring 3. There are multiple positioning grooves 11, and the multiple positioning grooves 11 are distributed circumferentially with the plug tube 4 as the central axis. The number of positioning grooves 11 is more than the number of screws 12; a rubber cover 13 is fixed on one side wall of the reserved groove 9, and the rubber cover 13 covers the notch of the reserved groove 9.

[0026] After the rotation angles of the spiral straight tube 1 and the spiral bent tube 2 are determined, first connect the connecting ring 3 and the connecting ring 8 at the end of the spiral straight tube 1 through the screw 12, then move the spiral bent tube 2 to drive the connecting ring 3 to rotate to the desired position on one side of the connecting ring 8, and then screw the screw 12 to connect the connecting ring 8 and the connecting ring 3 at the end of the spiral bent tube 2. At this time, the pipe mouth direction of the spiral bent tube 2 is fixed, and this arrangement makes it easy to adjust the pipe mouth direction of the spiral bent tube 2 as needed; the reason for installing the rubber cover 13 in the notch of the reserved groove 9 is to cover the notch of the reserved groove 9. When the screw 12 needs to be operated, the rubber cover 13 can be lifted up from the reserved groove 9 and turned outward.

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

Claims

1. A spiral air duct with an easily adjustable angle, comprising a spiral straight pipe (1) and a spiral curved pipe (2), characterized in that: The spiral straight tube (1) and the spiral curved tube (2) are both sleeved and fixed with a connecting ring (3) at their adjacent ends. The two connecting rings (3) are respectively rotatably connected to the two sides of the connecting ring (8). The outer ring surface of the connecting ring (8) is provided with a reserved groove (9). Screws (12) are both screwed on two parallel side walls of the reserved groove (9). One end of the two sets of screws (12) are respectively inserted into the surfaces of the two connecting rings (3).

2. The spiral air duct with easy angle adjustment according to claim 1, characterized in that: The connecting ring (3) is an L-shaped circular ring structure in cross section. The inner ring diameter of one end of the connecting ring (3) close to the connecting ring (8) is smaller than the inner ring diameter of the spiral straight tube (1). A plug tube (4) is integrally formed in the inner ring opening of one end of the connecting ring (3), and the plug tube (4) is inserted into the spiral straight tube (1).

3. The spiral air duct with easy angle adjustment according to claim 2, characterized in that: A sealing ring (5) is sleeved and fixed on the outer ring surface of the plug tube (4), and the sealing ring (5) is clamped between the plug tube (4) and the spiral straight tube (1) to generate elastic deformation.

4. The spiral air duct with easy angle adjustment according to claim 1, characterized in that: A limiting groove (6) is provided at one end of the connecting ring (3), the limiting groove (6) being an annular groove with a convex cross section, a traction ring (7) being rotatably connected inside the limiting groove (6), the traction ring (7) being a circular ring plate with a convex cross section, and one end of the traction ring (7) being fixed to the surface of the connecting ring (8).

5. The spiral air duct with easy angle adjustment according to claim 1, characterized in that: The connecting ring (8) is an annular plate structure, the inner ring diameter of the connecting ring (8) is equal to the inner ring diameter of the plug tube (4), the outer ring diameter of the connecting ring (8) is equal to the outer ring diameter of the connecting ring (3), and the reserved groove (9) is an annular groove.

6. The spiral air duct with easy angle adjustment according to claim 1, characterized in that: Screw holes (10) are provided on two parallel side walls of the reserved groove (9), a screw rod (12) passes through and is screwed into the screw hole (10), one end of the screw rod (12) is inserted into the positioning groove (11), the positioning groove (11) is provided on the surface of the connecting ring (3), a plurality of positioning grooves (11) are provided, and the plurality of positioning grooves (11) are distributed in a circle with the plug tube (4) as the central axis, and the number of the positioning grooves (11) is greater than the number of the screw rods (12).

7. The spiral air duct with easy angle adjustment according to claim 1, characterized in that: A rubber cover (13) is fixed on a side wall of the reserved groove (9), and the rubber cover (13) covers the notch of the reserved groove (9).

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