CN213597247U

CN213597247U - GFRP composite PVC foam acoustic board

Info

Publication number: CN213597247U
Application number: CN202021245016.6U
Authority: CN
Inventors: 王卫东; 洪少华; 张玉岁
Original assignee: Jiangsu Xinguang Environmental Protection Engineering Co ltd
Current assignee: Jiangsu Xinguang Environmental Protection Engineering Co ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-07-02
Anticipated expiration: 2030-06-30

Abstract

The utility model discloses a compound PVC foam acoustic baffle of GFRP, including two opposition GFRP interior casings of placing and set up the GFRP shell body in the casing outside in two GFRP to GFRP shrouding is all installed to the last lower extreme of casing and two GFRP shell bodies in two GFRP, has pour mortar or concrete between casing and the GFRP shell body in the corresponding GFRP. Simple structure in this device, constitute whole complex acoustic baffle structure through interior outer shell and the GFRP shrouding of last lower extreme, fix an organic whole through pouring mortar or concrete between the outer shell of GFRP, go up the lower extreme shutoff, it is structural comparatively firm, high strength, the durability is good, long service life, and the sound absorption inner core that the inside set up is PVC foam sound absorber, good physical properties has, flame retardant property, chemical resistance and insulating properties, and can inhale syllable-dividing, take precautions against earthquakes, the raw materials source is abundant, low price, comparatively environmental protection and long service life.

Description

GFRP composite PVC foam acoustic board

Technical Field

The utility model relates to a control technical field of vibration and noise among the environmental protection, a GFRP composite PVC foam acoustic board specifically says so.

Background

The conventional sound-absorbing materials are mainly fiber-based sound-absorbing materials including inorganic fiber sound-absorbing materials, organic fiber sound-absorbing materials and metal fiber sound-absorbing materials. The inorganic fiber sound absorption material mainly comprises inorganic fiber materials such as rock wool and glass wool, and has the advantages of good sound absorption performance, light weight, non-flammability, non-aging and the like. But the brittleness of the material is easy to cause fracture, the sound absorption performance is seriously reduced after the material is wetted, environmental pollution is easy to cause, and the like, so that the application range of the material is greatly limited. The organic fiber material mainly comprises plant fiber products and chemical fibers, the plant fibers mainly comprise cotton-flax fibers, felts, sugarcane fiberboards and the like, and the chemical fibers mainly comprise acrylic cotton, polyester cotton and the like. The advantage of this is that these materials have good sound absorption properties in the medium-high frequency range. However, the fireproof, anticorrosion and moisture-proof performances are very poor, so the application range is very small. The metal fiber sound absorption material mainly comprises stainless steel metal fiber and aluminum fiber, and has the advantages of high strength, good fire resistance, strong environmental adaptability, strong heat dissipation and the like, but has the defect of high manufacturing cost. Therefore, a sound absorption material which is cheap, pollution-free and durable is required.

In addition, the arrangement structure of the plate for installing the sound absorption material in the prior art is not stable and reliable enough, and the sound absorption effect of the sound absorption material is seriously influenced if the plate is too firm, thick and the like.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a GFRP composite PVC foam acoustic board to the not enough that prior art exists.

The technical scheme is as follows: the utility model provides a technical scheme that the problem adopted does: a GFRP composite PVC foam sound absorption plate comprises two GFRP inner shells which are oppositely arranged and GFRP outer shells which are arranged on the outer sides of the two GFRP inner shells, GFRP sealing plates are respectively arranged at the upper ends and the lower ends of the two GFRP inner shells and the two GFRP outer shells, mortar or concrete is poured between the corresponding GFRP inner shells and the corresponding GFRP outer shells, and sound absorption inner cores are filled in the GFRP inner shells; the GFRP outer shell facing the sound source is also provided with a plurality of strip grooves sunken inwards, and the groove walls of the strip grooves extend inwards to be close to the GFRP inner shell; the outer wall of the GFRP inner shell is provided with a circle of clamping groove structures corresponding to the groove wall positions of the long-strip grooves, when the GFRP outer shell is installed, the groove walls of the long-strip grooves are inserted into the clamping groove structures, and mortar or concrete is poured between the GFRP inner shell and the GFRP outer shell; and sound absorption holes are also arranged in the area of the long strip grooves on the GFRP inner shell.

Preferably, the sound absorption inner core is a PVC foam sound absorber.

Preferably, the opening rate of the strip groove on the GFRP outer shell is set to be 25-40%.

Preferably, the GFRP sealing plates at the upper and lower ends of the GFRP inner and outer casings are further provided with raised sealing heads which are inserted into the regions formed by the GFRP inner and outer casings, respectively.

Preferably, the strength of mortar filled between the GFRP inner shell and the GFRP outer shell is M10-M20; and the strength of the concrete filled between the GFRP inner shell and the GFRP outer shell is C20-C40.

Preferably, the sound absorption holes in the elongated grooves 5 of the GFRP inner housing are circular sound absorption holes.

Has the advantages that: compared with the prior art, the utility model, have following advantage:

(1) the device is simple in structure, the inner and outer shells and the GFRP sealing plates at the upper and lower ends form an integral composite sound absorption plate structure, the GFRP inner and outer shells are fixed into a whole by pouring concrete, the upper and lower ends are blocked, the structure is stable, the strength is high, the durability is good, the service life is long, the sound absorption inner core arranged at the innermost part is a PVC foam sound absorber, the sound absorption inner core has good physical performance, flame retardant performance, chemical resistance and insulating performance, and the sound absorption and insulation performance, the shock absorption and prevention are realized, the raw material source is rich, the price is low, the environment is protected, and the service life is long;

(2) in the device, the sound absorption inner core is filled in the GFRP inner shell, meanwhile, the strip groove is arranged on the GFRP outer shell and extends towards the inner side, and the corresponding sound absorption hole is also arranged on the GFRP inner shell, so that a rear biogenic source directly enters from the strip groove and the sound absorption hole and is absorbed by the sound absorption inner core in the GFRP inner shell, the integral stability and the durability are improved, and meanwhile, the GFRP outer shell has a better sound absorption effect; the groove wall of the long-strip groove is clamped in a clamping groove structure arranged on the GFRP inner shell, so that the positioning and installation of the GFRP outer shell are facilitated, and the position of the long-strip groove is easy to fix; and can not hinder the fixed function of pouring of inside concrete or mortar, kill two birds with one stone, convenient to use, rational in infrastructure.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a right side view of FIG. 1;

fig. 3 is an enlarged view of a portion a in fig. 1.

Detailed Description

The present invention will be further clarified by the following embodiments with reference to the attached drawings, which are implemented on the premise of the technical solution of the present invention, and it should be understood that these embodiments are only used for illustrating the present invention and are not used for limiting the scope of the present invention.

As shown in fig. 1 to 3, a GFRP composite PVC foam sound absorbing panel includes two GFRP inner housings 1 placed oppositely and GFRP outer housings 2 arranged outside the two GFRP inner housings 1, and GFRP sealing plates 3 are installed at the upper and lower ends of the two GFRP inner housings 1 and the two GFRP outer housings 2, mortar or concrete is poured between the corresponding GFRP inner housings 1 and the corresponding GFRP outer housings 2, and the GFRP inner housings 1 are filled with sound absorbing cores 4; the GFRP outer shell 2 facing the sound source is also provided with a plurality of strip grooves 5 which are sunken inwards, and the groove walls of the strip grooves extend inwards to be close to the GFRP inner shell 1; the outer wall of the GFRP inner shell 1 is provided with a circle of clamping groove structures 6 corresponding to the groove wall positions of the strip-shaped grooves 5, when the GFRP outer shell 2 is installed, the groove walls of the strip-shaped grooves 5 are inserted into the clamping groove structures 6, and mortar or concrete is poured between the GFRP inner shell and the GFRP outer shell; and sound absorption holes 7 are also provided in the GFRP inner housing 1 in the region of the elongate grooves 5.

The sound absorption inner core 4 is a PVC foam sound absorber; the opening rate of the strip groove 5 on the GFRP outer shell 2 is set to be 25-40%; convex seal heads 8 are also arranged on the GFRP seal plates 3 at the upper end and the lower end of the GFRP inner shell 1 and the GFRP outer shell 2, and the seal heads 8 are correspondingly inserted into the areas formed by the GFRP inner shell 1 and the GFRP outer shell 2; the strength of mortar filled between the GFRP inner shell 1 and the GFRP outer shell 2 is M10-M20; the strength of concrete filled between the GFRP inner shell 1 and the GFRP outer shell 2 is C20-C40; the sound absorption holes 7 provided in the elongated grooves 5 on the GFRP inner housing 1 are provided as circular sound absorption holes.

Simple structure in this device, constitute whole complex acoustic baffle structure through ectonexine casing and the GFRP shrouding of last lower extreme, fix an organic whole through concreting between the outer casing of GFRP, go up the lower extreme shutoff, it is structural comparatively firm, high strength, the durability is good, long service life, and the sound absorption inner core that the innermost set up is PVC foam sound absorber, good physical properties has, flame retardant property, chemical resistance and insulating properties, and can inhale syllable-dividing, take precautions against earthquakes, the raw materials is abundant in sources, low price, comparatively environmental protection and long service life.

In the device, the sound absorption inner core is filled in the GFRP inner shell, meanwhile, the strip groove is arranged on the GFRP outer shell and extends towards the inner side, and the corresponding sound absorption hole is also arranged on the GFRP inner shell, so that a rear biogenic source directly enters from the strip groove and the sound absorption hole and is absorbed by the sound absorption inner core in the GFRP inner shell, the integral stability and the durability are improved, and meanwhile, the GFRP outer shell has a better sound absorption effect; the groove wall of the long-strip groove is clamped in a clamping groove structure arranged on the GFRP inner shell, so that the positioning and installation of the GFRP outer shell are facilitated, and the position of the long-strip groove is easy to fix; and can not hinder the fixed function of pouring of inside concrete or mortar, kill two birds with one stone, convenient to use, rational in infrastructure.

The above-mentioned embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the invention and the appended claims, and all equivalent changes and modifications made according to the claims should be included in the scope of the present invention.

Claims

1. A GFRP composite PVC foam acoustic board is characterized in that: the composite material comprises two GFRP inner shells (1) which are arranged oppositely and GFRP outer shells (2) which are arranged on the outer sides of the two GFRP inner shells (1), wherein GFRP seal plates (3) are respectively arranged at the upper ends and the lower ends of the two GFRP inner shells (1) and the two GFRP outer shells (2), mortar or concrete is poured between the corresponding GFRP inner shells (1) and the corresponding GFRP outer shells (2), and sound-absorbing inner cores (4) are filled in the GFRP inner shells (1); and the GFRP outer shell (2) facing the sound source is also provided with a plurality of long grooves (5) which are sunken inwards, and the groove walls of the long grooves extend inwards to be close to the GFRP inner shell (1); the outer wall of the GFRP inner shell (1) is provided with a circle of clamping groove structures (6) corresponding to the groove wall positions of the strip-shaped grooves (5), when the GFRP outer shell (2) is installed, the groove walls of the strip-shaped grooves (5) are inserted into the clamping groove structures (6), and mortar or concrete is poured between the GFRP inner shell and the GFRP outer shell; and sound absorption holes (7) are also arranged in the area of the long strip groove (5) on the GFRP inner shell (1).

2. The GFRP composite PVC foam acoustical panel of claim 1, wherein: the sound absorption inner core (4) is a PVC foam sound absorber.

3. The GFRP composite PVC foam acoustical panel of claim 1, wherein: the opening rate of the strip groove (5) on the GFRP outer shell (2) is set to be 25-40%.

4. The GFRP composite PVC foam acoustical panel of claim 1, wherein: convex seal heads (8) are further arranged on the GFRP seal plates (3) at the upper end and the lower end of the GFRP inner shell (1) and the GFRP outer shell (2), and the seal heads (8) are correspondingly inserted into areas formed by the GFRP inner shell (1) and the GFRP outer shell (2).

5. The GFRP composite PVC foam acoustical panel of claim 1, wherein: the strength of mortar filled between the GFRP inner shell (1) and the GFRP outer shell (2) is M10-M20; and the strength of concrete filled between the GFRP inner shell (1) and the GFRP outer shell (2) is C20-C40.

6. The GFRP composite PVC foam acoustical panel of claim 1, wherein: and the sound absorption holes (7) arranged in the strip-shaped groove (5) on the GFRP inner shell (1) are round sound absorption holes.