Novel noise-reducing ventilating duct device

Abstract

The utility model relates to the technical field of ventilating ducts, in particular to a novel noise reduction ventilating duct device which comprises a first ventilating duct and a second ventilating duct, one end of the second ventilating duct is fixedly provided with a rubber ring and two clamping blocks, one end of the first ventilating duct is provided with two clamping grooves, and the other end of the first ventilating duct is provided with a second clamping groove. A fixing rod is fixedly installed on one side of each clamping block, fixing blocks are fixedly connected to the two sides of the first ventilation pipe, and protrusions are fixedly installed on the two sides of the second ventilation pipe. A screw rod is rotatably mounted on each fixing block, a limiting block is in threaded connection with each screw rod, a limiting assembly is arranged on each limiting block, and each limiting assembly comprises a sliding rod slidably mounted on the corresponding limiting block. According to the ventilation pipeline, the first ventilation pipe and the second ventilation pipe can be firmly connected together, operation is convenient and rapid, the phenomenon of air leakage can be effectively avoided after installation, and use of the ventilation pipeline is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation ducts, in particular to a novel ventilation duct device with noise reduction. Background Art

[0002] With the continuous development of society and the continuous advancement of science and technology, the technology related to ventilation ducts is also constantly improving. Ventilation ducts are a kind of municipal infrastructure designed to allow air circulation and reduce the concentration of harmful gases. Ventilation ducts are currently widely used.

[0003] The ventilation ducts currently used generally need to be connected and fixed with the help of flanges and multiple bolts during installation, which is cumbersome and inconvenient to operate, and air leakage is prone to occur after the ventilation ducts are installed, which is not conducive to the use of the ventilation ducts. Utility Model Content

[0004] The purpose of the utility model is to solve the following shortcomings in the prior art: the ventilation ducts currently used generally need to be connected and fixed with the help of flanges and multiple bolts during installation, which is cumbersome and inconvenient to operate, and air leakage is prone to occur after the ventilation ducts are installed, which is not conducive to the use of the ventilation ducts. A new type of noise-reducing ventilation duct device is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A novel noise-reducing ventilation duct device comprises a first ventilation pipe and a second ventilation pipe, a rubber ring and two clamping blocks are fixedly installed at one end of the second ventilation pipe, two clamping grooves are provided at one end of the first ventilation pipe, a fixing rod is fixedly installed on one side of each clamping block, both sides of the first ventilation pipe are fixedly connected with fixing blocks, and both sides of the second ventilation pipe are fixedly installed with protrusions;

[0007] A screw rod is rotatably mounted on each of the fixed blocks, and a limit block is threadedly connected to the screw rod. A limit assembly is arranged on the limit block, and the limit assembly includes a slide rod slidably mounted on the limit block, and a fastening ring is fixedly mounted on one end of the slide rod.

[0008] Preferably, each of the limit blocks is provided with a sliding cavity for the sliding rod to slide left and right, a through hole is provided on an inner wall of one side of the sliding cavity, and each of the sliding rods is provided with a groove.

[0009] Preferably, each of the slide bars is sleeved with a spring, one end of the spring is fixedly connected to the slide bar, and the other end of the spring is fixedly connected to the limit block.

[0010] Preferably, each of the fixing blocks is provided with a through opening for installing the screw rod, and the surface of the limiting block is in close contact with the inner wall of the through opening.

[0011] Preferably, one end of each of the screw rods is fixedly connected to a rotating disk, and the surface of the rotating disk is provided with anti-slip grooves.

[0012] Preferably, the first ventilation duct and the second ventilation duct are each provided with an installation cavity, and sound-absorbing cotton is fixedly installed in each of the installation cavities.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] Under the elastic force of the spring, the inner surface of the fastening ring will stick to the surface of the protrusion and pull the protrusion toward the first ventilation pipe, which is conducive to the close contact between the inner wall of the block and the groove, so that the rubber ring and the surface of the first ventilation pipe can be close to each other to avoid subsequent air leakage. When one end of the fixing rod passes through the through hole and is engaged with the groove, it can effectively prevent the subsequent fastening ring from moving at will, and the first ventilation pipe and the second ventilation pipe can be firmly connected together. The operation is convenient and quick, and after installation, air leakage can be effectively avoided, which is conducive to the use of the ventilation duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the partial structure of a novel noise-reducing ventilation duct device proposed by the utility model;

[0016] Figure 2 This is a schematic diagram of the side cross-sectional structure of a novel noise-reducing ventilation duct device proposed by the utility model;

[0017] Figure 3 This is a schematic diagram of a top view and partial cross-section of a novel noise-reducing ventilation duct device proposed by the utility model;

[0018] Figure 4 It is a schematic diagram of the side structure of the fixing block and the fastening ring in the utility model.

[0019] In the figure: 1 first ventilation pipe, 2 second ventilation pipe, 3 fixed block, 4 limit block, 5 rotating disk, 6 clamping block, 7 rubber ring, 8 spring, 9 protrusion, 10 fastening ring, 11 sliding rod, 12 sound-absorbing cotton, 13 screw rod, 14 fixed rod, 15 sliding cavity. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] The terms such as "upper", "lower", "left", "right", "middle" and "one" cited in the present utility model are only for the convenience of description and are not used to limit the scope of application of the present utility model. Changes or adjustments in their relative relationships shall be regarded as the scope of application of the present utility model without substantially changing the technical content.

[0022] Reference Figure 1-Figure 4 A novel noise-reducing ventilation duct device comprises a first ventilation pipe 1 and a second ventilation pipe 2, one end of the second ventilation pipe 2 is fixedly installed with a rubber ring 7 and two clamping blocks 6, one end of the first ventilation pipe 1 is provided with two clamping grooves, a fixing rod 14 is fixedly installed on one side of each clamping block 6, both sides of the first ventilation pipe 1 are fixedly connected with fixing blocks 3, both sides of the second ventilation pipe 2 are fixedly installed with protrusions 9, each fixing block 3 is rotatably installed with a screw rod 13, the screw rod 13 is threadedly connected with a limiting block 4, a limiting assembly is arranged on the limiting block 4, and the limiting assembly comprises a sliding rod 11 slidably installed on the limiting block 4, and a fastening ring 10 is fixedly installed on one end of the sliding rod 11.

[0023] When the locking nut 11 is in the state of being moved along the guide 13, one end of the locking nut 14 will penetrate the through hole and engage with the groove, thereby effectively preventing the subsequent fastening ring 10 and the sliding rod 11 from moving at will.

[0024] Each fixed block 3 is provided with a through hole for installing the screw rod 13. The surface of the limit block 4 is in close contact with the inner wall of the through hole. The through hole can limit the moving trajectory of the limit block 4 to prevent the limit block 4 from swinging, so that the limit block 4 can stably move along the screw rod 13. One end of each screw rod 13 is fixedly connected to a rotating disk 5. The surface of the rotating disk 5 is provided with anti-slip grooves. The rotating disk 5 with a larger cross-sectional area is used to facilitate the control of the rotation of the screw rod 13. The anti-slip grooves can increase the friction when the rotating disk 5 is held by hand to avoid slipping. The first ventilation duct 1 and the second ventilation duct 2 are provided with installation cavities, and sound-absorbing cotton 12 is fixedly installed in each installation cavity. The sound-absorbing cotton 12 can absorb the noise generated in the first ventilation duct 1 and the second ventilation duct 2, thereby achieving the function of noise reduction.

[0025] In the present invention, during installation, the two clamping blocks 6 at one end of the second ventilation pipe 2 are respectively inserted into the two clamping grooves of the first ventilation pipe 1 until the surface of the rubber ring 7 is tightly attached to the end face of the first ventilation pipe 1, and then the two rotating disks 5 are rotated, and the two rotating disks 5 drive the two screw rods 13 to rotate. During the relative rotation of the screw rod 13 and the fixing block 3, the sliding rod 11 is pulled so that the fastening ring 10 at one end of the sliding rod 11 is located just in front of the protrusion 9. As the screw rod 13 rotates, the limit block 4 moves along the screw rod 13 at the same time. When the fastening ring 10 is sleeved on the outside of the protrusion 9, the force applied to the sliding rod 11 is removed and the rotating disk 5 is stopped. At this time, the spring 8 Under the action of the elastic force, the inner surface of the fastening ring 10 will stick to the surface of the protrusion 9 and pull the protrusion 9 toward the first ventilation pipe 1, which is conducive to the close contact between the block 6 and the inner wall of the groove, so that the rubber ring 7 and the surface of the first ventilation pipe 1 can be in close contact, avoiding subsequent air leakage. After that, the rotating disk 5 continues to be rotated, and the limit block 4 continues to move along the screw rod 13. One end of the fixing rod 14 will pass through the through hole and be engaged with the groove, which can effectively prevent the subsequent fastening ring 10 from moving at will, and the first ventilation pipe 1 and the second ventilation pipe 2 can be firmly connected together. The operation is relatively convenient and quick, and after installation, air leakage can be effectively avoided, which is conducive to the use of the ventilation duct.

[0026] In the present invention, unless otherwise clearly specified or limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A novel noise-reducing ventilation duct device, comprising a first ventilation duct (1) and a second ventilation duct (2), characterized in that: A rubber ring (7) and two clamping blocks (6) are fixedly mounted on one end of the second ventilation pipe (2); two clamping grooves are provided on one end of the first ventilation pipe (1); a fixing rod (14) is fixedly mounted on one side of each clamping block (6); both sides of the first ventilation pipe (1) are fixedly connected to fixing blocks (3); and both sides of the second ventilation pipe (2) are fixedly mounted with protrusions (9); A screw rod (13) is rotatably mounted on each of the fixed blocks (3), and the screw rod (13) is threadedly connected to a limit block (4). A limit assembly is arranged on the limit block (4), and the limit assembly comprises a slide rod (11) slidably mounted on the limit block (4), and a fastening ring (10) is fixedly mounted on one end of the slide rod (11).

2. A novel noise-reducing ventilation duct device according to claim 1, characterized in that Each of the limit blocks (4) is provided with a sliding cavity (15) for the sliding rod (11) to slide left and right, a through hole is provided on an inner wall of one side of the sliding cavity (15), and each of the sliding rods (11) is provided with a groove.

3. A novel noise-reducing ventilation duct device according to claim 1, characterized in that: A spring (8) is sleeved on each of the slide bars (11), one end of the spring (8) is fixedly connected to the slide bar (11), and the other end of the spring (8) is fixedly connected to the limit block (4).

4. A novel noise-reducing ventilation duct device according to claim 1, characterized in that: Each of the fixing blocks (3) is provided with a through opening for installing the screw rod (13), and the surface of the limiting block (4) is in close contact with the inner wall of the through opening.

5. A novel noise-reducing ventilation duct device according to claim 1, characterized in that: One end of each screw rod (13) is fixedly connected to a rotating disk (5), and the surface of the rotating disk (5) is provided with anti-slip grooves.

6. A novel noise-reducing ventilation duct device according to claim 1, characterized in that: The first ventilation pipe (1) and the second ventilation pipe (2) are both provided with installation cavities, and sound-absorbing cotton (12) is fixedly installed in each installation cavity.

Images