19 results about "Acoustical insulator" patented technology

The utility model relates to the field of noise reduction equipment, specifically disclose a sound attenuation room of reducing noise, including a plurality of by the sound attenuation room main part of inner panel and outer panel, the sound attenuation room main part is connected each other through the connecting structure to form a casing with the cavity, the sound attenuation room main part adopts integrated structure, constitutes by the wallboard of Q235A material, ceiling and access door, and ceiling can be individually detached, the sound attenuation room is filled with fire -resistant sound attenuation cotton, and the fire -retardant sound attenuation cotton is cut even neat and tightly wrapped in the wallboard, the utility model provides a sound attenuation room of reducing noise, through the connecting design of optimization air duct and wallboard, reasonable layout equipment, adopt sound insulation material and set up sound attenuation device etc.

The utility model discloses a magnetorheological sound insulation cotton damping with anti -interference structure relates to sound insulation material technical field, including sound insulation cotton layer and anti -interference structure layer. The composite electromagnetic shielding layer of the magnetorheological sound insulation cotton damping with anti -interference structure outermost layer is alternately woven composite by nanometer copper net and graphene film, can be all -round shielding to electromagnetic interference, creates stable electromagnetic environment for the inside magnetorheological liquid filling cavity, effectively avoids the outside electromagnetic signal interference magnetorheological liquid response to the magnetic field, guarantees its rheological characteristic stable play, the three -dimensional shock attenuation layer of inner layer adopts the even arrangement of hexagonal honeycomb -like elastic rubber film and viscoelastic damping block, and is matched with interval distribution's shock attenuation spring and shock attenuation rubber block, can form multistage shock attenuation system, effectively absorbs and buffers mechanical vibration, greatly reduced the influence of outside vibration to sound insulation cotton layer and magnetorheological liquid filling cavity, has improved the reliability of product under complex vibration environment significantly.

This invention belongs to the field of building materials technology, specifically disclosing a sound-absorbing porous foamed concrete composite board and its preparation method. Using foamed concrete as the substrate of the composite board effectively solves the problem of poor environmental performance of traditional sound insulation materials. Compared with materials such as polystyrene and sound-absorbing rock wool, it does not require a large amount of energy for preparation and can utilize recycled raw materials. It does not produce toxic powder after aging, reducing harm to the air environment and human health, while also avoiding the flammability hazards of traditional materials. The closed-cell sound insulation layer's sealed pores can block direct sound wave penetration, achieving basic sound insulation. The sound-absorbing pores of the porous sound-absorbing layer, combined with the interconnected channels, introduce incident sound waves into the interior. Energy is dissipated through reflection and friction within the channels, forming a dual protection of "sound absorption and sound insulation." This solves the core problem of poor sound insulation performance of traditional concrete and compensates for the short lifespan of traditional sound insulation materials, extending the overall service life of the board.

The invention relates to a spacer device for a glazing unit, the spacer device comprising a straight profile (1, 10, 100) that comprises at least four walls (3, 4, 5) defining therebetween at least one chamber (2, 21, 22), the profile extending over a profile length, one (3) of the walls comprising a plurality of periodically arranged perforations (6). The chamber (2) comprises an acoustic insulation material (8) and, optionally, a desiccant (9). Any one (4, 5) of the walls not comprising the perforations has at least one longitudinal through-opening (40, 51, 52) which extends at least partially over the length of the profile (1, 10, 100), the at least one longitudinal through-opening (40, 51, 52) being hermetically sealed by a sealing closure element (20), fixed at least to the wall (4, 5) having the at least one longitudinal through-opening (40, 51, 52).

The utility model discloses a sound insulation and noise reduction photovoltaic module sound insulation and noise reduction photovoltaic module, including frame, photovoltaic cell piece layer, double -layer toughened glass and sound insulation layer, the utility model discloses transparent sound insulation layer sets up between double -layer toughened glass, adopts high molecule transparent sound insulation material, can effectively reduce the outside noise spread, improves the sound insulation performance of component, and photovoltaic cell piece layer is closely connected fixed through bonding encapsulating material, ensures the leakproofness and weather resistance of component connection, and the sealing gasket adopts the combination of elastic sealing strip and structural glue, and the overall sealing and shock attenuation effect are enhanced, and the sound insulation and noise reduction photovoltaic module not only has good power generation efficiency, but also can improve the acoustic comfort of building environment, is especially suitable for the photovoltaic building integration BIPV project of being close to noise source, improves the overall functionality and residential comfort of building.

The utility model provides a kind of assembled sound insulation floor, belong to building floor technical field, including concrete load-bearing layer and sound insulation board, the top of concrete load-bearing layer is embedded with threaded steel, the inside of sound insulation board is provided with sound insulation material, the top of sound insulation board is provided with the first through-hole that penetrates its itself in array, sound insulation board is set in the top of concrete load-bearing layer, threaded steel is penetrated to its top from the first through-hole of sound insulation board, sound insulation board has multiple, the top of any adjacent four sound insulation boards is provided with scissors fixed frame in the meeting place, four corners of scissors fixed frame are respectively set on the threaded steel adjacent to sound insulation board, and threaded steel is fixed using nut, solve the single structure of existing assembled floor floor, multiple homogeneous structure or simple superposition structure are used, cannot satisfy the problem of diversified sound insulation requirement.

The utility model relates to a high sound insulation fireproof door structure, including door frame body and door leaf, door frame body includes the upper door frame along the horizontal direction is arranged with and the side door frame along the vertical direction symmetry is arranged in the upper door frame both sides, the lower end left and right sides of upper door frame along the vertical direction symmetry is provided with not less than one mounting groove, the upper end left and right sides of door leaf along the vertical direction symmetry is provided with the same number of mounting step part with mounting groove, and mounting step part can embed mounting groove, one side of mounting groove is provided with a sealing element, and the other side of mounting groove evenly distributes several sound absorption holes, and the inner wall of each sound absorption hole is equipped with fine steel wire mesh, and the bottom of upper door frame still is provided with first sound absorption cotton layer and second sound absorption cotton layer. The utility model sets up multiple sealing elements and first sound absorption cotton layer and second sound absorption cotton layer on door frame body, can seal the gap between door frame body and door leaf, and fills the composite fireproof sound insulation material in the door leaf, effectively improves the performance of sound insulation fireproof.

OMNIDIRECTIONAL DIFFUSION ACOUSTIC ENCLOSURE AMPLIFIED BY A VIBRATING WOODEN BLADE The invention relates to an acoustic enclosure (100) comprising a box (200) having a lower face (210) having a perimeter P1; an acoustic insulator (300) arranged in said box; at least one loudspeaker (400) arranged in said box and oriented towards said lower face (210) in a first initial direction of propagation; a wooden blade (500) arranged opposite said lower face (210) and having a perimeter P2 extending along at least the dimensions of the perimeter P1 of said lower face (210), so as to oppose the initial direction of propagation of the sound waves and transform this into a radial and omnidirectional direction of propagation by vibration of said blade (500);at least one elastic support (600) mechanically connecting said airtight box (200) with said wooden blade (500) and configured to maintain a distance D1, representative of the gap between said box (200) and said blade (500). Figure for the abbreviation: Figure 1A;

The application discloses a layered composite sound insulation material based on noise propagation path blocking and application, and belongs to the technical field of automobile NVH noise reduction. The layered composite sound insulation material comprises, from top to bottom, a damping layer, a sound absorption layer, a sound elimination layer, a barrier layer and a buffer layer. The sound absorption layer is provided with a plurality of holes. The sound elimination layer is provided with a honeycomb structure, and the honeycomb structure is filled with paraffin microcapsules. The material realizes synchronous noise reduction of medium-high frequency noise and low frequency noise through the cooperation of the five-layer structure, and the material has good toughness and softness, and has high adhesion with automobile parts, so that the noise reduction and sound insulation effect can be further improved.

The present disclosure relates to a partition module, a partition kit, a partition, and a method for forming a partition. The partition module comprises a frame and a panel, the frame having an inner space for accommodating a fireproof soundproofing material, two mutually opposite end face mounting surfaces for connecting the panel, and a circumferential mounting surface for connecting with an external connecting furring. The panel is connected with the end face mounting surfaces of the frame, and at least two slots extending in the circumferential direction are provided on the circumferential mounting surface, the two slots are respectively arranged on two sides of the center line of the circumferential mounting surface at intervals, and the slots have openings facing the outside for receiving the insertion pieces of the external connecting furring. By using the plug-in connection between the partition module and the matching connecting furring of the present disclosure, the flatness or alignment at the connection interface can be improved, the reliability and stability of the connection can be improved, the shaking of the partition can be avoided and the anti-seismic and shock-absorbing performance of the partition can be improved, or the sound insulation performance at the connection interface of the two partition modules can be improved.

This invention relates to the field of structural components and building materials technology, specifically disclosing a thermal insulation and soundproof composite panel, comprising a substrate and end plates fixed to the left and right sides of the substrate. The substrate includes two panels and a connecting frame sandwiched between them. The connecting frame is composed of several rhomboid cylindrical frames connected by connecting plates. The rhomboid cylindrical frames form a first cavity and are evacuated. The front and rear sides of the rhomboid cylindrical frames are enclosed by the panels through fixing plates to form side cavities. The two ends of the substrate are enclosed by the end plates to form end cavities. This invention uses the vacuum first cavity as the main structure to block heat conduction and sound wave propagation. V-shaped and Z-shaped partition plates are respectively set in the side cavities and end cavities to divide them into independent chambers, which are filled with sound insulation material and thermal insulation foamed concrete respectively, forming a continuously distributed sound insulation layer and thermal insulation layer. This combines the functions of vacuum thermal insulation and sound insulation with the filling material, effectively improving the overall thermal insulation and sound insulation performance of the panel.

This soundproof material for a vehicle comprises a polyurethane foam. The average cell diameter of the polyurethane foam is 50-200 μm, the ventilation resistance is 0.2-5 kPa ⋅ s / m, and the Asker C hardness is 45 or more. When the normal incidence sound absorption coefficient of the polyurethane foam is measured using a disc-shaped sample having a diameter of 30 mm and a thickness of 10 mm, the sound absorption coefficient at a frequency of 800 Hz is 0.30 or more, and the sound absorption coefficient at a frequency of 5000 Hz is 0.50 or more. The polyurethane foam has a desired rigidity and excellent sound absorbency in both the low frequency range and the high frequency range.

Provided is a nonwoven fabric that exhibits sound absorption performance and has excellent sound insulation properties in a wide frequency range of 200-2000 Hz. The present invention relates to a nonwoven fabric containing fibrillated fibers and having a tensile modulus of 10 MPa or more, a soundproofing material made of the nonwoven fabric, and a composite soundproofing material made by laminating the soundproofing material and a support.

The utility model belongs to NVH test rig field, concretely is a kind of sound attenuation quick connection NVH intercooling system. Including secondary control instrument, temperature sensor after intercooling, electromagnetic control valve, stainless steel pipe, peripheral cooling water inlet pipe, stainless steel pipe quick connection buckle, engine, heat exchange fixed base and heat exchanger. The utility model has two control modes, controls water volume and water flow, and it is convenient to install using the mode of stainless steel pipe collocation buckle, and the noise radiation elimination effect of internal airflow of intercooling system is improved using double-layer sound insulation material package;And use portable heat exchanger, small, fixed on the surface of iron floor, effectively reduce external sound reflection problem.

The present invention relates to a surface treatment method and apparatus for a sound-absorbing and insulating material, wherein a high-temperature metal mesh belt moving in an endless track is brought into contact with the surface of a mat made of thermoplastic resin radiating fibers, which has a very smooth surface and numerous fluffs formed over the entire surface and is flexible, so that an outer layer having appropriate strength and a pattern can be formed. The surface treatment method for a sound-absorbing and insulating material according to the present invention comprises a process in which a plate-shaped sound-absorbing and insulating material made of thermoplastic resin radiating fibers is passed between a pair of metal mesh belts driven by a heat transfer roller and a pull-out guide roller, causing melting to occur on the surface of the sound-absorbing and insulating material by heat transferred from the heat transfer roller, and a hardened outer layer is formed on the surface of the sound-absorbing and insulating material by hardening the melted surface of the sound-absorbing and insulating material during the transfer process toward the pull-out guide roller. And, the device of the present invention is composed of a heating roller (11A) (11B) that is installed vertically on the inlet side and moves in close contact with a part of the outer surface to heat a metal mesh belt (13), a pull-out guide roller (12A) (12B) that is installed vertically on the outlet side and paired with each heating roller (11A) (11B), and a metal mesh belt (13A) (13B) that is hung on the outer surface of each pair of heating rollers and pull-out guide rollers (11A-12A) (11B-12B) and moves in an endless track manner by the heating rollers and pull-out guide rollers (11A-12A) (11B-12B) and has an opening rate of 50% or more. The surface treatment method and apparatus for a sound-absorbing and insulating material according to the present invention significantly improves productivity by continuously forming an outer layer on the surface of the sound-absorbing and insulating material, and at the same time enables operation with a single metal mesh belt regardless of the length of the sound-absorbing and insulating material, thereby reducing incidental costs compared to conventional devices. Furthermore, the plurality of through holes formed in the metal mesh belt allow pores connecting from the outer layer on the surface of the sound-absorbing and insulating material to the interior to remain, thereby minimizing the reduction in sound absorption caused by the formation of the outer layer.

The utility model discloses a railway construction construction noise reduction device relates to construction noise reduction technical field, aims at improving the utilization of sound insulation material, improves the limitation of construction noise reduction device to height, improves sound insulation and noise reduction effect, and prolongs the service life of sound insulation board, and its technical scheme main points are: this railway construction construction noise reduction device includes sound insulation board and base, the sound insulation board includes mainboard and splicing part, the splicing part includes plugboard, trapezoidal groove, splicing board, trapezoidal block, recess and protruding piece, the mainboard includes shell, louver hole, sound absorption cotton, frame and vacuum glass, the shell back is provided with spring buckle and backplate, and this construction noise reduction sound insulation barrier installation dismantles conveniently, can be reused, improves the utilization of sound insulation material, and environmental protection is high.

The utility model relates to the field of stainless steel door, especially sound insulation and noise reduction's stainless steel door, including door body, the one side of door body is connected with the closing plate, the one side of door body, closing plate is equipped with the rectangular mouth, the inside of door body, closing plate is equipped with the accommodation cavity, the inside of accommodation cavity is connected with the damping sound insulation felt, the inside of accommodation cavity is connected with the glass fiber cotton, the inside of accommodation cavity is connected with the perforated sound absorption board, be provided with the limiting mechanism on the door body. The utility model discloses when using, can pass through the limiting mechanism, through the pull rod pull connecting rod, connecting rod drives the limiting plate to slide in the rectangular cavity, spring contracts, the limiting plate drives trapezoidal piece to leave the limiting groove, until trapezoidal piece is in to the rectangular cavity, can take down the connecting block, replaces the sound insulation material, need not to tear open the whole stainless steel door, the time is shorter, is more convenient, can pass through the sound insulation material, greatly improves the sound insulation and noise reduction effect of stainless steel door.