Embedded grid pipe of fresh air silencing pipe

Abstract

The utility model relates to and discloses a fresh air hush pipe embedded grid pipe which comprises a hush pipe body, a plurality of positioning rods are fixedly installed on the inner wall of the hush pipe body, a noise reduction lining is installed on the inner wall of the hush pipe body and the positioning rods in a sliding mode, and a plurality of sliding grooves embedded with the positioning rods are formed in the periphery of the noise reduction lining. According to the fresh air silencing pipe, the grid pipe is embedded, through the four positioning rods, the four sliding grooves, the four limiting protruding rods and the four guide grooves, the noise reduction lining and the sound absorption cylinder which absorb sound and reduce noise are installed in the inner cavity of the silencing pipe body in a sliding mode, replacement or installation is more convenient, and due to the uneven net-shaped structure on the surface of the inner ring of the sound absorption cylinder, the noise reduction effect is better; the diatom ooze in the noise reduction lining can emit and scatter sound waves for multiple times, the noise reduction effect is better, the molecular structure of the diatom ooze in the noise reduction lining also has a very strong noise reduction function, and the negative oxygen ion material in the noise reduction lining can release negative oxygen ions, so that the inner cavity of the silencing pipe body has antibacterial and air purification effects.

Description

Technical Field

[0001] The utility model relates to the technical field of fresh air systems, in particular to a fresh air silencer pipe with an embedded grid pipe. Background Art

[0002] In the fresh air system, the operation of the motor in the main unit and the impact of the air flow will generate noise, and the greater the air volume, the higher the motor power and the greater the noise; therefore, the air outlet of the general fresh air system must be equipped with a silencer, otherwise the operation at night will greatly affect sleep.

[0003] At present, the silencer cotton in the silencer pipe of the general fresh air system is clamped and installed between the inner layer and the outer layer of the silencer pipe, which is not convenient for disassembly. This paper aims to propose an embedded fresh air silencer pipe with easy installation and removal of noise reduction and silencer components. Utility Model Content

[0004] The utility model aims to solve the problem in the prior art that the silencer cotton in the silencer pipe for the fresh air system is clamped and installed between the inner layer and the outer layer of the silencer pipe, which is inconvenient to disassemble, and proposes a fresh air silencer pipe embedded with a grid pipe.

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

[0006] A fresh air silencer duct embedded with a grid tube comprises a silencer tube body, a plurality of positioning rods are fixedly mounted on the inner wall of the silencer tube body, a noise reduction lining is slidably mounted on the inner wall of the silencer tube body and the plurality of positioning rods, and a plurality of sliding grooves which engage with the positioning rods are arranged on the periphery of the noise reduction lining.

[0007] Preferably, a sound-absorbing tube is slidably installed in the noise reduction lining, and the sound-absorbing tube is made of sound-absorbing cotton in a cylindrical shape.

[0008] Preferably, a plurality of limiting convex rods are fixedly mounted on the inner wall of the noise reduction lining, and a guide groove which is mutually engaged with the plurality of limiting convex rods is arranged on the periphery of the sound absorbing tube.

[0009] Preferably, the noise reduction lining is made of negative oxygen ion algae calcium board, and an uneven mesh structure is provided on the inner ring surface of the sound-absorbing tube.

[0010] Preferably, a plurality of arc-shaped limit blocks are fixedly installed on the periphery of one end of the silencer tube body, and a joint is fixedly connected to the periphery of the other end of the silencer tube body, wherein an arc-shaped clamping block interlaced with the plurality of arc-shaped limit blocks is arranged in the joint.

[0011] Preferably, a round cover is fixedly installed on the periphery of the silencer pipe body, and the inner diameter of the round cover is larger than the outer diameter of the joint.

[0012] Compared with the prior art, the utility model provides a mesh tube embedded in a fresh air silencer pipe, which has the following beneficial effects:

[0013] 1. The fresh air silencer pipe has an embedded grid pipe, which is used to slide the noise reduction lining and the sound-absorbing tube into the inner cavity of the silencer pipe through four positioning rods and four sliding grooves, as well as four limiting convex rods and four guide grooves. Compared with the sound-absorbing cotton clamped and installed in the traditional silencer pipe, it is easy to replace and install, and the uneven mesh structure on the inner ring surface of the sound-absorbing tube can emit and scatter sound waves multiple times, so that the sound waves can be propagated and dissipated multiple times inside the sound-absorbing tube, which reduces the reflection and echo of the noise and has a better noise reduction effect. Moreover, the molecular structure of the diatom mud itself in the noise reduction lining has a strong noise reduction function. The negative oxygen ion material in the noise reduction lining is a material that can release negative oxygen ions. It can release negative oxygen ions. Negative oxygen ions can combine with harmful substances such as dust and bacteria in the air to make them settle and purify the air, so that the inner cavity of the silencer pipe has the effect of antibacterial and air purification.

[0014] 2. The fresh air silencer pipe is embedded with a grid pipe. Through the three arc-shaped limit blocks at one end of the silencer pipe body, the joint at the other end of the silencer pipe body and the three arc-shaped clamping blocks therein, the two silencer pipe bodies can be quickly connected with high damping stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of a grid tube structure embedded in a fresh air silencer pipe proposed in the utility model Figure 1 ;

[0016] Figure 2 A schematic diagram of a grid tube structure embedded in a fresh air silencer pipe proposed in the utility model Figure 2 ;

[0017] Figure 3 A schematic diagram of a grid tube structure embedded in a fresh air silencer pipe proposed in the utility model Figure 3 .

[0018] In the figure: 1. Silencer pipe body; 2. Noise reduction lining; 3. Sound absorbing tube; 4. Positioning rod; 5. Slide groove; 6. Limiting convex rod; 7. Guide groove; 8. Arc-shaped limiting block; 9. Round cover; 10. Joint; 11. Arc-shaped clamping block. DETAILED DESCRIPTION

[0019] 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.

[0020] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0021] Refer to the attached Figure 1-3 A mesh pipe embedded in a fresh air silencer pipe comprises a silencer pipe body 1, the cross section of the silencer pipe body 1 is annular, and four positioning rods 4 are fixedly protruded inwardly on the inner wall of the silencer pipe body 1, and the four positioning rods 4 are respectively arranged at four quadrants of the inner circle of the cross section of the silencer pipe body 1, and a noise reduction lining 2 made of negative oxygen ion material is slidably installed in the silencer pipe body 1, and four slide grooves 5 are arranged on the outer wall of the noise reduction lining 2, and the inner wall of the slide groove 5 and the outer surface of the positioning rod 4 are mutually embedded, and four limiting convex rods 6 are also fixedly connected to the inner wall of the silencer pipe body 1, and the four slide grooves 5 on the outer periphery of the noise reduction lining 2 are respectively slidably installed on the four positioning rods 4 on the inner wall of the silencer pipe body 1;

[0022] The noise reduction lining 2 in the present application is specifically a cylindrical noise reduction lining 2 made of a negative oxygen ion algae calcium board. Due to the molecular structure of the diatom mud itself in the negative oxygen ion algae calcium board, it has a strong noise reduction function, can effectively absorb high-frequency sound segments that are harmful to the human body, and attenuate low-frequency noise, so that the noise reduction lining 2 has sound absorption and noise reduction functions, and the negative oxygen ion material in the negative oxygen ion algae calcium board is a material that can release negative oxygen ions, which can release negative oxygen ions. Negative oxygen ions can combine with harmful substances such as dust and bacteria in the air to make them settle and purify the air, so that the noise reduction lining 2 in the present application has the effect of antibacterial and air purification.

[0023] In this embodiment, a sound-absorbing tube 3 is telescopically and slidably installed in the inner circle of the noise reduction lining 2. The sound-absorbing tube 3 is made of sound-absorbing cotton in a cylindrical shape, and an uneven mesh structure is provided on the inner circle surface of the sound-absorbing tube 3. The uneven mesh structure is mainly used to emit and scatter sound waves as many times as possible, so that the sound waves can propagate and dissipate multiple times inside the sound-absorbing tube 3, thereby reducing the reflection and echo of noise. The outer wall of the sound-absorbing tube 3 is provided with a guide groove 7 that is interlocked with four limiting convex rods 6.

[0024] It should be added that the four guide grooves 7 in the sound-absorbing tube 3 are respectively slidably installed on the four limiting protrusions 6 on the periphery of the noise reduction lining 2. A gap of about 1 mm is reserved between the inner wall of the noise reduction lining 2 and the inner wall of the silencer tube body 1, as well as between the outer wall of the sound-absorbing tube 3 and the inner wall of the noise reduction lining 2, so as to coaxially and quickly insert the noise reduction lining 2 into the silencer tube body 1, and coaxially quickly insert the sound-absorbing tube 3 into the noise reduction lining 2.

[0025] In this embodiment, three arc-shaped limit blocks 8 are fixedly installed on the periphery of one end of the silencer pipe body 1, and a joint 10 with an expanded inner diameter is fixedly connected to the periphery of the other end of the silencer pipe body 1. Three arc-shaped clamping blocks 11 are fixedly installed in the inner wall of the joint 10. The inner diameter of the joint 10 is the same as the outer diameter of the noise reduction liner 2, that is, the two silencer pipe bodies 1 can be slidably connected through the joint 10, and the gap between the arc-shaped clamping block 11 and the connecting end face of the silencer pipe body 1 is the same as the height of the arc-shaped limit block 8, and the three arc-shaped clamping blocks 11 in the inner circle of the joint 10 can be staggered and slid through the three arc-shaped limit blocks 8 on the periphery of another silencer pipe body 1;

[0026] When the three arc-shaped limit blocks 8 slide into the gap between the arc-shaped clamping block 11 and the silencer body 1, the two interconnected silencer bodies 1 are coaxially rotated 60°, and the three arc-shaped limit blocks 8 are clamped between the other silencer body 1 and the three arc-shaped clamping blocks 11. The friction between the inner wall of the joint 10 and the outer periphery of the other silencer body 1, as well as the friction between the three arc-shaped limit blocks 8 and the three arc-shaped clamping blocks 11 are used to connect the two silencer bodies 1 with high damping. A round cover 9 is coaxially fixedly installed on the periphery of the silencer body 1. The opening of the round cover 9 and the opening at one end of the silencer body 1 are parallel to each other, and the inner diameter of the round cover 9 is larger than the outer diameter of the joint 10. The round cover 9 is mainly used to cover the connection between the two silencer bodies 1.

[0027] The utility model uses four positioning rods 4 and four sliding grooves 5, as well as four limiting convex rods 6 and four guide grooves 7 to slide the noise reduction lining 2 and the sound-absorbing tube 3 for sound absorption and noise reduction into the inner cavity of the sound-absorbing tube body 1. Compared with the sound-absorbing cotton in the traditional sound-absorbing tube, it is convenient to replace or install, and the mesh structure on the inner ring surface of the sound-absorbing tube 3 is mainly used for multiple emission and scattering of sound waves, so that the sound waves can be propagated and dissipated multiple times inside the sound-absorbing tube 3, thus reducing the reflection and echo of the noise, and the molecular structure of the diatom mud itself in the noise reduction lining 2 has a strong noise reduction function, and the negative oxygen ion material in the noise reduction lining 2 is a material that can release negative oxygen ions, which can release negative oxygen ions. The negative oxygen ions can combine with harmful substances such as dust and bacteria in the air to make them settle and purify the air, so that the inner cavity of the sound-absorbing tube body 1 has the effect of antibacterial and air purification;

[0028] Through the three arc-shaped limit blocks 8 at one end of the silencer pipe body 1, and the joint 10 at the other end of the silencer pipe body 1 and the three arc-shaped clamping blocks 11 therein, the two silencer pipe bodies 1 can be quickly and stably connected with high damping.

[0029] 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 fresh air silencer pipe embedded in a grid pipe, comprising a silencer pipe body (1), characterized in that: A plurality of positioning rods (4) are fixedly mounted on the inner wall of the silencer pipe body (1), and a noise reduction lining (2) is slidably mounted on the inner wall of the silencer pipe body (1) and the plurality of positioning rods (4), and a plurality of sliding grooves (5) which are engaged with the positioning rods (4) are arranged on the periphery of the noise reduction lining (2).

2. The mesh tube embedded in the fresh air silencer pipe according to claim 1 is characterized in that: A sound-absorbing tube (3) is slidably mounted in the noise reduction lining (2), and the sound-absorbing tube (3) is made of sound-absorbing cotton in a cylindrical shape.

3. The mesh tube embedded in the fresh air silencer pipe according to claim 2 is characterized in that: A plurality of limiting convex rods (6) are fixedly mounted on the inner wall of the noise reduction lining (2), and a guide groove (7) which interlocks with the plurality of limiting convex rods (6) is arranged on the periphery of the sound absorbing tube (3).

4. The mesh tube embedded in the fresh air silencer pipe according to claim 2 is characterized in that: The noise reduction lining (2) is specifically made of a negative oxygen ion algae calcium board, and an uneven mesh structure is provided on the inner ring surface of the sound-absorbing tube (3).

5. The mesh tube embedded in the fresh air silencer pipe according to claim 1 is characterized by: A plurality of arc-shaped limit blocks (8) are fixedly mounted on the periphery of one end of the muffler pipe body (1), and a joint (10) is fixedly connected to the periphery of the other end of the muffler pipe body (1), wherein an arc-shaped clamping block (11) interlaced with the plurality of arc-shaped limit blocks (8) is arranged in the joint (10).

6. The mesh tube embedded in the fresh air silencer pipe according to claim 5, characterized in that: A round cover (9) is fixedly mounted on the periphery of the silencer pipe body (1), and the inner diameter of the round cover (9) is greater than the outer diameter of the joint (10).

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