CN210371368U - Detachable low-flow-resistance ventilation silencer - Google Patents

Abstract

The utility model discloses a can dismantle low flow resistance ventilation silencer, including framework, flange and the leaf shape noise elimination body, the flange is fixed in the terminal surface of framework, there are parallel, the symmetric distribution's guide slot on the inside two sides of framework, the leaf shape noise elimination body is installed through both ends guide block on the guide slot in the framework, the guide slot is arranged along the horizontal direction, and has U type damping gasket in the guide slot, and the leaf shape noise elimination body distributes in the framework, divide into a plurality of layers from top to bottom, packs between the outer panel of framework and the hole board and inhales sound insulation board. This can dismantle low flow resistance ventilation silencer designs the shape of the noise elimination body for the lower leaf shape of flow resistance, and the noise elimination body is crisscross the arranging from top to bottom in the framework, makes the air current passageway be the curve shape of similar sine or cosine, more is favorable to the air current to pass through smoothly. The utility model discloses simple structure, dismouting are convenient, and air resistance is little, reduce the extra power loss of equipment when satisfying noise elimination performance, can be applied to the ventilation equipment of the big amount of wind and fall and make an uproar.

Description

Detachable low-flow-resistance ventilation silencer

Technical Field

The utility model belongs to the technical field of the silencer, concretely relates to can dismantle low flow resistance ventilation silencer.

Background

The silencer is a device which can make air flow pass through and can reduce noise, and is widely applied to ventilation and noise reduction of devices such as fans, air compressors, ventilation air conditioners, generator rooms and the like in the field of noise control engineering.

The silencer inevitably produces airflow resistance while reducing noise, and the larger the airflow resistance is, the larger the power loss to the equipment is, resulting in energy waste. Good mufflers must combine both ventilation and noise reduction, and most mufflers have difficulty meeting both of these requirements.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can dismantle low flow resistance ventilation silencer to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a can dismantle low flow resistance ventilation silencer, includes framework, flange and the leaf shape noise elimination body, the flange is fixed in the terminal surface of framework, the inside two sides of framework has parallel, the guide slot of symmetric distribution, the leaf shape noise elimination body is installed through both ends guide block on the guide slot in the framework, the guide slot is arranged along the horizontal direction, and has U type damping gasket in the guide slot, and the leaf shape noise elimination body distributes in the framework, divide into a plurality of layers from top to bottom, and adjacent two-layer leaf shape noise elimination body quantity differs one, and alternate two-layer quantity equals, fills between the outer panel of framework and the hole board and inhales the sound insulation board.

Preferably, the frame body comprises an outer panel, an inner hole plate and a sound absorption and insulation plate, the sound absorption and insulation plate is filled between the outer panel and the inner hole plate, guide grooves are formed in two sides of the inner hole plate, U-shaped damping gaskets are lined in the guide grooves, the perforation rate of the inner hole plate is 20% -25%, and the perforation diameter is smaller than 4 mm.

Preferably, the blade-shaped noise elimination body comprises an outer hole plate, a sound absorption plate, side sealing plates and guide blocks, the sound absorption plate is filled in the outer hole plate and the side sealing plates, the guide blocks are fixed on the side sealing plates, the side sealing plates and the guide blocks are located at two ends of the blade-shaped noise elimination body, the perforation rate of the outer hole plate is 20% -30%, and the perforation diameter is smaller than 4 mm.

The utility model discloses a technological effect and advantage: this can dismantle low flow resistance ventilation silencer designs the shape of the noise elimination body for the lower leaf shape of flow resistance, and the noise elimination body is crisscross the arranging from top to bottom in the framework, makes the air current passageway be the curve shape of similar sine or cosine, more is favorable to the air current to pass through smoothly. The utility model discloses simple structure, dismouting are convenient, and air resistance is little, reduce the extra power loss of equipment when satisfying noise elimination performance, can be applied to the ventilation equipment of the big amount of wind and fall and make an uproar.

Drawings

FIG. 1 is a schematic view of the internal structure of the present invention cut along the direction of the air flow passage;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is an enlarged partial schematic view of the guide slot of FIG.;

FIG. 4 is a schematic view of a structure of a lobed muffler body;

fig. 5 is a schematic end view of the structure of the blade-shaped muffler body.

In the figure: 1. a frame body; 101. an inner orifice plate; 102. a sound absorption and insulation plate; 103. an outer panel; 104. a guide groove; 2. a flange; 3. a lobed muffler body; 301. an outer orifice plate; 302. a side sealing plate; 303. a guide block; 4. u type damping gasket.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a can dismantle low flow resistance ventilation silencer as shown in fig. 1-5, including framework 1, flange 2 and leaf shape noise elimination body 3, flange 2 is fixed in the terminal surface of framework 1, there are parallel, the symmetric distribution's of guide slot 104 on the inside two sides of framework 1, leaf shape noise elimination body 3 installs on guide slot 104 in framework 1 through both ends guide block 303, guide slot 104 arranges along the horizontal direction, and has U type damping gasket 4 in the guide slot 104, avoids guide block 303 and guide slot 104 direct collision to produce structural noise, and another effect of U type damping gasket 4 is the increase friction, prevents that leaf shape noise elimination body 3 from moving along guide slot 104 direction at will; the leaf-shaped muffling bodies 3 are distributed in the frame body 1 and are divided into a plurality of layers from top to bottom, the number of the adjacent two layers of leaf-shaped muffling bodies 3 is different by one, the number of the two layers is equal, as shown in fig. 2, the upper layer and the lower layer are seven layers in total, each layer is provided with five or four leaf-shaped muffling bodies 3, the lower layer of leaf-shaped muffling body 3 is arranged at the corresponding position between the upper layer of two leaf-shaped muffling bodies 3, and an airflow channel similar to a sine or cosine shape is formed between the upper layer of leaf-shaped muffling. The airflow passes through the channel smoothly, and the sound waves are reflected and absorbed for many times between the blade-shaped noise elimination bodies 3, so that a good noise elimination effect is achieved; the sound absorption and insulation plate 102 is filled between the outer panel 103 and the inner hole plate 101 of the frame body 1, the sound absorption and insulation plate 102 is required to be uniformly and compactly filled, and if glass wool with large volume density is used as a sound absorption and insulation material, the outer layer is wrapped by glass wool cloth to prevent cotton wool from overflowing.

Specifically, the frame body 1 comprises an outer panel 103, an inner hole plate 101 and a sound absorption and insulation plate 102, wherein the sound absorption and insulation plate 102 is filled between the outer panel 103 and the inner hole plate 101, guide grooves 104 are formed in two sides of the inner hole plate 101, a U-shaped damping gasket 4 is lined on the guide grooves 104, the perforation rate of the inner hole plate 101 is 20% -25%, and the perforation diameter is smaller than 4 mm.

Specifically, the lobed muffler body 3 comprises an outer orifice plate 301, a sound absorbing plate, side sealing plates 302 and guide blocks 303, the sound absorbing plate is filled in the outer orifice plate 301 and the side sealing plates 302, the guide blocks 303 are fixed on the side sealing plates 302, the side sealing plates 302 and the guide blocks 303 are located at two ends of the lobed muffler body 3, the perforation rate of the outer orifice plate 301 is 20% -30%, and the perforation diameter is smaller than 4 mm.

The blade-shaped noise elimination body 3 is installed in parallel along the guide groove 104 inside the frame body 1 through the guide blocks 303 at two ends, the assembly and disassembly are convenient, the blade-shaped noise elimination body 3 is arranged in the guide groove 104 in parallel, and the upper layer and the lower layer are staggered in position, so that the airflow channel is in a curve shape similar to sine or cosine.

To sum up, the utility model provides a can dismantle low flow resistance ventilation silencer, the leaf-shaped noise elimination body 3 passes through guide block 303 and is connected with guide slot 104, and simple structure, installation and dismantlement are convenient, can be according to the quantity and the arrangement mode of actual amount of wind adjustment noise elimination body. The utility model discloses an useful part lies in, can have lower air current resistance when satisfying noise elimination performance, reduces the extra power loss of equipment, the energy saving.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims (3)

1. The utility model provides a can dismantle low flow resistance ventilation silencer, includes framework (1), flange (2) and the leaf noise elimination body (3), its characterized in that: flange (2) are fixed in the terminal surface of framework (1), there are parallel, the guide slot (104) of symmetric distribution on the inside two sides of framework (1), install through both ends guide block (303) leaf shape noise elimination body (3) on guide slot (104) in framework (1), horizontal direction is arranged along guide slot (104), and has U type damping gasket (4) in guide slot (104), and leaf shape noise elimination body (3) distribute in framework (1), divide into a plurality of layers from top to bottom, and adjacent two-layer leaf shape noise elimination body (3) quantity differs one, and alternate two-layer quantity equals, packs between the outside board (103) of framework (1) and hole board (101) and inhales sound insulation board (102).

2. A removable low flow resistance vent muffler according to claim 1, wherein: the frame body (1) comprises an outer panel (103), an inner hole plate (101) and a sound absorption and insulation plate (102), the sound absorption and insulation plate (102) is filled between the outer panel (103) and the inner hole plate (101), guide grooves (104) are formed in two sides of the inner hole plate (101), U-shaped damping gaskets (4) are lined in the guide grooves (104), the perforation rate of the inner hole plate (101) is 20% -25%, and the perforation diameter is smaller than 4 mm.

3. A removable low flow resistance vent muffler according to claim 1, wherein: the blade-shaped noise elimination body (3) comprises an outer hole plate (301), a sound absorption plate, side sealing plates (302) and guide blocks (303), wherein the sound absorption plate is filled in the outer hole plate (301) and the side sealing plates (302), the guide blocks (303) are fixed on the side sealing plates (302), the side sealing plates (302) and the guide blocks (303) are located at two ends of the blade-shaped noise elimination body (3), the perforation rate of the outer hole plate (301) is 20% -30%, and the perforation diameter is smaller than 4 mm.

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