557 results about "Acoustic board" patented technology

The invention provides a movable sound insulation dustproof construction shed, a plurality of supporting mechanisms are sequentially arranged in a shed body in the X-axis direction, and each supporting mechanism comprises two telescopic rods oppositely arranged in the Y-axis direction, a supporting assembly erected on the two telescopic rods and a walking assembly connected to the lower end of each telescopic rod; each telescopic rod is provided with a first limiting assembly used for limiting a sound insulation plate installed on the telescopic rod, and the supporting assembly comprises a first arc-shaped supporting rod and a second arc-shaped supporting rod which are used for supporting the shed body located at the upper ends of the two telescopic rods and can be oppositely folded. The walking assembly is used for driving each telescopic rod to move or stop, so that the problems that an existing dustproof noise reduction shed lacks comprehensive shielding and sound insulation measures on a device to be shielded, and sound insulation felt cloth is inconvenient to disassemble and assemble, so that the dustproof noise reduction effect and stability of the dustproof noise reduction shed are poor are solved.

A plant sound insulation screen comprises sound insulation plates continuously arranged on one side of a plant wall, a preset interval is formed between every two adjacent sound insulation plates, and supports are arranged at the positions, corresponding to the adjacent sound insulation plates, of the wall. The support is of a metal plate structure, the lower end of the support is provided with a supporting plate perpendicular to the enclosing wall and extending outwards and used for supporting the bottom faces of the ends of the sound insulation plates, the top of the support is flush with or higher than the top faces of the sound insulation plates, and the width of the support is larger than the interval between the adjacent sound insulation plates. The bracket is fixed on the surface of an enclosing wall through expansion screws; locking screws are vertically arranged on the support in a penetrating mode and located in the intervals between the adjacent sound insulation plates, and pressing plates are arranged on the locking screws in a sleeving mode and used for pressing the side portions of the sound insulation plates. The scheme facilitates later replacement of the sound insulation board, is more convenient to disassemble and assemble, and can effectively ensure the uniformity and sound insulation effect of the sound insulation screen before and after replacement of the sound insulation board.

The invention relates to the technical field of transformers, and discloses a noise reduction type intelligent large dry-type transformer which comprises a base, a sound insulation plate is fixedly connected to the left side of the base, a ventilation door is rotatably connected to the front portion of the sound insulation plate, a buffer spring is fixedly connected to the inner wall of the base, and a supporting frame is fixedly connected to the top of the buffer spring. A transformer body is arranged at the top of the supporting frame, a fixing plate is fixedly connected to the left side of a sound insulation plate, a chamfering plate is fixedly connected to the bottom of the fixing plate, a reciprocating lead screw is rotatably connected to the inner wall of the chamfering plate, and a U-shaped plate is in threaded connection with the circumferential surface of the reciprocating lead screw. And vibration generated in the operation process of the transformer body can be buffered, so that mechanical vibration generated in the operation process of the transformer body can be remarkably reduced, noise is reduced, and the comfort degree of the working environment is improved.

The invention relates to the technical field of multi-layer material preparation, in particular to a high-light-transmittance weather-proof impact-resistant striped sound insulation board. The problem that transparency, weather resistance and sound insulation effect of a traditional stripe material are difficult to consider at the same time is solved. The light scattering and absorption center is reduced and high transparency and low haze are realized through reactive extrusion of the recycled material, combination of high-temperature adsorption activated carbon, multi-stage high vacuum and deep purification of a reactive decolorizing agent, and matching of transparent dispersion diffusion master batch and a compatilizer. The surface layer adopts the core-shell weather-resistant master batch and the secondary high-energy UV fluorosilicone curing coating for double shielding of ultraviolet and inhibition of photodegradation and yellowing; styrene-maleic anhydride damping resin is introduced into the middle layer, and uniform inclined micropores and asymmetric stripes formed by supercritical CO2 are combined, so that the medium and low frequency sound insulation index is improved; the bottom layer is repaired and guaranteed to be durable in impact resistance by virtue of a core-shell toughening agent and molecular chain extension; the defects of traditional products are overcome, and the service life requirement of sound barriers for expressways and rail transit is met.

The utility model discloses a sound-proof decorative plate, which relates to the technical field of decorative plates and comprises a plate main body, the plate main body comprises a decorative plate and a base plate, a sound-proof plate is connected between the decorative plate and the base plate, and the sound-proof plate comprises a front sound-proof plate and a rear sound-proof plate. A plurality of cavity grooves are formed in one side of the front sound insulation plate and one side of the rear sound insulation plate, complex reflection and scattering paths can be formed through the sound insulation folded plates, the contact opportunity of sound waves and sound absorption materials is increased, the problem that the sound insulation effect of a decorative plate is poor is solved, and the sound insulation performance of the decorative plate is improved; the front sound insulation layer, the middle sound insulation layer and the rear sound insulation layer are matched with aperture decreasing, so that the decorative plate can specifically absorb sound waves of different frequencies, the effect of widening the sound absorption frequency band is achieved, the problem that the decorative plate is poor in sound absorption effect of different frequency bands is solved, and the absorption effect of the decorative plate on the sound of different frequency bands can be improved.

This utility model relates to a multi-fan main unit cabinet for housing multi-fan main units, including a body, a cabinet door, a sound insulation panel, and partitions. The body is a hollow structure with an open front end. The cabinet door is located at the front end of the body. The sound insulation panel is a polyester fiber sound-absorbing panel, which is respectively installed on the outer wall of the body and the cabinet door. The partitions are located inside the body, dividing the interior of the body into a first chamber and a second chamber. The first chamber is suitable for housing the exhaust chamber of the multi-fan main unit, and the second chamber is suitable for housing the inlet chamber of the multi-fan main unit. By using polyester fiber sound-absorbing panels as sound insulation panels, partitioning the partitions, and designing a structure that accommodates the ductwork of the multi-fan main unit, the multi-fan main unit cabinet according to this utility model embodiment can effectively reduce the external transmission of main unit operating noise, optimize the utilization of internal space, and solve the problems of noise interference and spatial disorder when placing multi-fan main units.

The invention relates to a road sound insulation board for traffic engineering, and belongs to the technical field of road sound insulation boards, the road sound insulation board comprises a mounting base, a sound insulation board body is detachably connected to the top of the mounting base, silencing holes are formed in the surface of the sound insulation board body, and a water storage cavity is formed in the sound insulation board body. According to the green plant pot and the first spraying pipe, when sound insulation operation is conducted on a road through the road sound insulation board, in order to improve the multifunctionality of the sound insulation board in daily use and achieve the multiple noise reduction effect on road noise, a planting rod is turned over to be in a horizontal state, and the green plant pot is placed outside the planting rod; a first spraying pipe is opened to spray green plants, meanwhile, a control valve outside a connecting pipe is opened, a municipal water source is conveyed into a water storage cavity under the formation of a circulating opening, a sound insulation means is added in a sound insulation plate, and multiple noise reduction operation is performed on noise under the sound insulation condition of the sound insulation plate; and the aesthetic effect of the sound insulation plate in daily use is increased.

This utility model discloses a sound insulation test bench for passenger compartment doors, relating to the technical field of sound insulation test benches. It includes a base plate, on the upper side of which a soundproof cover is mounted. The soundproof cover has a mounting frame groove on its side. Two soundproof panels and a soundproof frame are slidably fitted onto the inner walls and top wall of the mounting frame groove, respectively. An adjustment assembly is provided between the soundproof frame and the two soundproof panels and the soundproof cover. A fixing frame is installed between the soundproof frame and the two soundproof panels. The passenger compartment door body is mounted on the inner wall of the fixing frame. A disassembly assembly is provided between the fixing frame and the two soundproof panels. By adjusting the first servo motor, the second servo motor drive gear, and the bidirectional threaded rod in the adjustment assembly, the positions of the soundproof panels and the soundproof frame can be flexibly adjusted to accommodate passenger compartment door bodies of different sizes. The disassembly assembly allows for quick disassembly of the fixing frame and the passenger compartment door body, saving time and manpower compared to the traditional method of extensive bolt installation.

The utility model discloses an interior decoration soundproof wall, which relates to the technical field of interior decoration and comprises a wall body, the wall body further comprises a first wall plate and a second wall plate, a plug-in fixing component is arranged between the first wall plate and the second wall plate, soundproof plates are arranged in the first wall plate and the second wall plate in an embedded manner, and the first wall plate and the second wall plate are connected through a plug-in fixing component. The first wall plate and the second wall plate are arranged on the wall body, two sound insulation plates are arranged between the first wall plate and the second wall plate, sound insulation cotton is arranged between the two sound insulation plates, a positioning assembly is further arranged between the sound insulation plates and the sound insulation cotton, and a sealing piece is arranged on at least one of the wall body and the inserting and fixing assembly. The sound insulation cotton and the sound insulation plate are conveniently and rapidly fixed; secondly, the sound insulation plates are embedded in the first wall plate and the second wall plate, so that the thickness of the wall body is reduced while the sound insulation effect is guaranteed; and thirdly, the sound insulation effect is improved by the sealing element.

The utility model relates to the technical field of ceramic composite boards, in particular to a wear-resistant ceramic composite board which comprises a protective surrounding edge, a mounting structure is arranged on the inner side of the protective surrounding edge, wear-resistant assemblies are arranged in the mounting structure, and anti-seismic mechanisms and protective assemblies are arranged on the inner sides of the wear-resistant assemblies on the upper side and the lower side. The protection assembly is located on the inner side of the anti-seismic mechanism. According to the utility model, the protection assembly is arranged, when the protection assembly is used, the protection assembly is composed of a resin layer, a metal fiber layer, a waterproof layer, a heat preservation layer, a sound insulation plate and a shaping honeycomb plate, and the metal fiber layer is arranged in a crossed manner, so that the strength and the toughness of the assembly are enhanced, and excellent impact resistance and wear resistance are ensured in the use process; the arrangement of the waterproof layer and the heat preservation layer not only improves the waterproof and heat preservation performance of the assembly, but also effectively prevents the damage caused by damp and temperature change of the internal structure, thereby prolonging the service life, and the application of the sound insulation plate effectively weakens the external noise.

The utility model provides a kind of sound insulation and noise reduction composite air pipe structure, it is related to composite air pipe technical field, including composite air pipe assembly, sound insulation component is provided on the composite air pipe assembly, the side of the composite air pipe assembly is provided with mounting assembly, the composite air pipe assembly includes air pipe main body and protective support cover.The utility model is by sound absorption box and is set in the inside of air pipe main body, cooperate sound absorption hole is favorable to absorb part noise, in turn is favorable to weaken part noise, by sound insulation board and is set in the outside of air pipe main body, it is favorable to further weaken noise, reduce its diffusion to outside, by both part is favorable to realize sound insulation and noise reduction, reduce noise transmission to external environment, in turn reduce noise pollution, by the outside of protective support cover is provided with buffer pad, it is favorable to absorb part vibration when air pipe main body operates, reduce vibration diffusion to building structure by support.

A sound attenuation panel for an aircraft turbomachine includes first and second skins and a core comprising. The core has at least one polygonal cell provided with an internal cavity in communication with at least one hole formed in the first wall. The cavity has a first height (H1) between the first and second skins. Each cavity includes at least one internal partition that extends substantially from the first skin perpendicular to the first and second skins over a second height (H2) that is less than the first height (H1) and transversely between two side walls of the cell. The internal partition divides the cavity into at least two adjacent pockets in communication with one another and with the hole.

The utility model discloses a detachable temporary sound insulation wall for highway safety facility engineering. The detachable temporary sound insulation wall comprises a fixing base, a sound insulation assembly and a locking assembly. The sound insulation assembly is used for isolating construction noise and comprises a fixing frame structure, a sound insulation plate is arranged on the inner side of the fixing frame structure, the fixing frame structure is connected to the top of the fixing base in a penetrating and inserting mode, a limiting piece used for splicing the sound insulation wall is arranged on the side of the fixing frame structure, and the locking assembly is connected to the side of the fixing base in a penetrating and inserting mode. The locking assembly is used for fixing the sound insulation plate; according to the sound insulation assembly fixing frame structure, the limiting pieces are arranged at the splicing positions of the sound insulation assembly fixing frame structure, and through position limitation of the limiting pieces, when the splicing positions between the sound insulation assemblies are extruded and collided by construction external force, the limiting pieces can enable the multiple sound insulation assemblies to be spliced into a whole; and the situation that the sound insulation assemblies are spliced, deviated and staggered due to external force collision, and overall wall sound insulation is affected is avoided.

The utility model relates to the technical field of punching, in particular to a seat framework material punching machine which is characterized in that an upper die is fixedly connected to the telescopic end of an electric telescopic rod, and a noise reduction mechanism is connected to the bottom end of the upper die; the noise reduction mechanism comprises a groove sound insulation plate, the groove sound insulation plate is fixedly connected to the bottom end of the upper mold, a sound insulation frame is slidably connected to a notch of the groove sound insulation plate and located on the outer side of the lower mold, a first spring is fixedly connected to the upper end of the sound insulation frame, and one end of the first spring is connected into the notch of the groove sound insulation plate. The groove sound insulation board is driven to move when the upper die moves downwards, the groove sound insulation board drives the sound insulation frame to move, the sound insulation frame makes contact with the upper end of the bottom plate after moving downwards, and the lower die is covered after the groove sound insulation board and the sound insulation frame are matched. And noise generated during plate stamping is isolated, so that the noise generated during plate stamping is reduced.

The utility model relates to the technical field of wooden bridge opening plates, and discloses an anti-deformation wooden bridge opening plate with a multi-layer composite structure, which comprises a center plate, an upper side plate is arranged on one side of the outer surface of the center plate, and an upper side protection plate is arranged on one side of the outer surface of the upper side plate. A lower side plate is arranged on the side, away from the outer surface of the upper side plate, of the outer surface of the center plate, a lower side protection plate is arranged on one side of the outer surface of the lower side plate, a center shaft rod is arranged on one side of the outer surface of the center plate, the upper side plate comprises upper side filler, a buffer block is arranged in the upper side filler, and the lower side plate comprises lower side filler. And a sound insulation plate is arranged in the lower side filler. According to the utility model, the plurality of central shaft rods are arranged in the device, the plurality of central shaft rods are uniformly arranged in the central plate, and the central shaft rods are made of wood structures, so that when the plate is stressed, a certain supporting effect can be started, and the deformation is prevented.

The utility model relates to the technical field of sound insulation walls, and provides a sound insulation wall for house construction, which comprises a wall body, keels and sound insulation cotton, the keels are arranged on the wall body through first bolts, the sound insulation cotton is laid on the wall body between the adjacent keels, and a cement layer is arranged on one side of the sound insulation cotton far away from the wall body. An inner sound insulation board and an outer sound insulation board are arranged on the two sides of the keel respectively, the end face of the sound insulation cotton is arranged among the inner sound insulation board, the outer sound insulation board and one side of the keel, the outer sound insulation board and the keel are assembled and connected through second bolts, and sound insulation caps are arranged at the ends, away from the keel, of the second bolts. The first bolt and the second bolt do not make contact with each other, sound can be prevented from being directly transmitted to the wall body through the bolts through the sound bridge effect, the keel is completely wrapped by the inner sound insulation board, the outer sound insulation board and the sound insulation cotton, the possibility that the sound is transmitted on the keel can be effectively reduced, and the sound insulation effect is good. And the sound insulation cap is arranged to further prevent sound from being conducted through the exposed part of the second bolt.

The utility model discloses a mute door handle, which relates to the technical field of door handles and comprises a door handle main body, the door handle main body comprises a lockset panel, a bearing seat, a square rod and a handle are arranged in the middle of the lockset panel, one end of the lockset panel is provided with a mounting screw, a sound insulation plate is arranged in the lockset panel, and the sound insulation plate is provided with a sound insulation groove. An extension handle and a protection assembly are arranged at one end of the handle, the protection assembly comprises an installation sleeve, a T-shaped installation sliding rail is arranged in the installation sleeve, a rubber protection sleeve is arranged outside the installation sleeve, a positioning plate is arranged at one end of the installation sleeve, and a threaded rod is arranged on the side face of the positioning plate. According to the mute door handle, the protective assembly is arranged outside the extension handle in the sleeving mode, so that the extension handle and a user are protected, the extension handle is separated through the installation sleeve and the rubber protective sleeve, the user is prevented from making direct contact with the extension handle to generate static electricity, and the use comfort of the handle is improved.

The utility model relates to the technical field of traditional Chinese medicine filling, and discloses a noise reduction device of a pneumatic filling machine, which comprises a base, stand columns are uniformly and fixedly mounted on the upper portion of the base, sliding grooves are formed in the stand columns, grooves are formed in the tops of the stand columns, and a front sound insulation plate is arranged between the left stand column and the right stand column. The left portion and the right portion of the front sound insulation board are fixedly connected with first fillets correspondingly, the first fillets are matched with the sliding grooves, a side sound insulation board is arranged between the front stand column and the rear stand column, the front portion and the rear portion of the side sound insulation board are fixedly connected with second fillets, the second fillets are matched with the sliding grooves, and top sound insulation boards are arranged on the upper portions of the stand columns. The bottom of the top sound insulation board is fixedly connected with a connecting block, and the sound insulation board is more convenient and faster to disassemble and assemble by arranging a clamping structure on the sound insulation board, so that the device is convenient to maintain, the maintenance efficiency is improved, and the situation that the working efficiency of the device is influenced by a large amount of time consumed during maintenance is avoided.

The utility model discloses vehicle technical field especially relates to a sound insulation board for vehicle, front engine compartment, car body structure and vehicle. Sound insulation board for vehicle includes baffle and connecting piece, and the circumferential outer edge of baffle is used for connecting with the inner wall of triangular window cavity of the front engine compartment of vehicle. Connecting piece is connected with baffle and sets up in the front engine compartment. The front engine compartment, car body structure and vehicle include above-mentioned sound insulation board for vehicle, and baffle sets up in triangular window cavity to cut off the transmission path of noise in triangular window cavity, improves sound insulation and noise reduction effect. Baffle is installed in triangular window cavity through connecting piece, and the installation difficulty of sound insulation board for vehicle is reduced, and installation efficiency and installation stability are improved, and simultaneously avoid sound insulation board for vehicle or its installation accessories to expose on the outside of front end cover plate.

The utility model belongs to building industrialization technical field especially, and it is a kind of assembly and decoration integration light steel structure self-supporting integrated box type floor slab, it is characterized in that, including light steel frame, the group of few Chinese characters keel that is arranged in the internal cavity of this light steel frame, the upper integrated decorative cover plate that is covered in the outside upper of light steel frame, the lower integrated decorative cover plate that is covered in the outside lower of light steel frame, the heat preservation sound insulation board or extruded sheet that is set in the lower integrated decorative cover plate, the heat preservation sound insulation board that is set in the upper integrated decorative cover plate, the steel bearing plate that is set in the upper light steel frame.The utility model forms closed box body by cold-formed steel frame and double-layer cover plate, integrates heat preservation sound insulation layer inside, realizes 100% factory prefabrication, and this floor slab adapts robot automatic production, has the advantages such as light weight, high strength, energy saving, fast installation, is applicable to prefabricated building and green low-carbon building, civil building and industrial building.

The utility model provides an assembly type light inner partition wall structure, and belongs to the technical field of assembly type buildings. The batten comprises a plurality of batten units which are mutually spliced, each batten unit comprises a sound insulation board, steel wire meshes are arranged on the two sides of each sound insulation board, the steel wire meshes and the sound insulation boards are arranged at intervals, and the steel wire meshes and the sound insulation boards are connected through a plurality of positioning connecting pieces to form an integrated framework. The integrated structure further comprises a main body layer, the integrated structure is arranged in lightweight concrete, and the main body layer is formed after the lightweight concrete is solidified. Grouting grooves are formed in the two ends of each batten unit. And after the two adjacent groups of batten units are spliced, the adjacent grouting grooves are butted to form a grouting channel. The wiring wallboard comprises two wallboard units, and the wiring wallboard and the batten units are spliced and fixed in a matched mode; and a wiring cavity is formed between the two wallboard units. The problems that in the prior art, a wall is prone to cracking, the sound insulation effect is poor, and multi-pipeline wiring cannot be achieved can be solved.

The utility model discloses an energy-saving structure of a building energy-saving protective plate, which belongs to the technical field of building protective plates and comprises a heat-insulating plate, a sound-insulating plate and a decorative plate, the sound-insulating plate is adhered to the side wall of the heat-insulating plate, the decorative plate is adhered to the side wall of the sound-insulating plate, an inserting rod is mounted on the side wall of the decorative plate, and a connecting sleeve is inserted into the side wall of the heat-insulating plate. The connecting sleeve penetrates through the side wall of the sound insulation board, the inserting rod can be installed in the connecting sleeve in an inserted mode, a positioning rod is installed on the inner side wall of the connecting sleeve, a clamping block is installed on the side wall of the positioning rod, a clamping groove is formed in the end of the inserting rod, and the clamping block can be installed in the clamping groove in an inserted mode. According to the device, the connecting sleeve is arranged, the inserting rod is matched with the positioning rod in the connecting sleeve, so that the decorative plate is further fixed, the edge warping or delaminating situation caused by glue aging is avoided, in addition, the steel wire mesh is further arranged in the device, the adhesive force of adhesive mortar can be increased, and the adhesive mortar is prevented from being disengaged.

The utility model relates to the technical field of rubber strips, in particular to a sponge rubber strip for sealing, which comprises a rubber strip body, and a mounting mechanism is arranged in the rubber strip body; the mounting mechanism comprises a supporting part and a moving part. The supporting part is located on the side face of the moving part. The supporting part comprises a plurality of first sound insulation plates, a first limiting groove is formed in the inner side face of the adhesive tape body in a penetrating mode, a first through groove is formed in the side face of the adhesive tape body in a penetrating mode, the moving part comprises a plurality of first supporting plates, and the first supporting plates are located in the first limiting grooves correspondingly; a plurality of second clamping grooves are formed in the inner bottom face of the adhesive tape body in a penetrating mode. The first sound insulation plate and the first supporting plate are arranged for supporting, so that the noise prevention effect of the sponge rubber strip is effectively improved, meanwhile, the arranged first rubber rod and the first supporting box conduct downward extrusion, and therefore the sponge rubber strip has the better buffering and damping effect.

The utility model relates to the technical field of air compressors, and discloses an air compressor with a silencing case structure, which comprises an air compression tank body and a connecting seat, the right side of the top end of the air compression tank body is fixedly connected with a connecting port, and the top of the air compression tank body is provided with a pressure gauge. A supporting seat is fixedly connected to the left side of the top end of the air compression tank body, an air compressor body is fixedly connected to the top end of the supporting seat, and a reserved groove is formed in the top end of the air compressor body. According to the air compressor with the silencing case structure, the air compressor body, the mounting blocks, the sound insulation plates, the reserved grooves and the positioning grooves are arranged, the sound insulation plates can be clamped to the mounting blocks to be fixed through the reserved grooves in the sound insulation plates, and the sound insulation plates are arranged at the front end, the rear end and the two sides of the interior of the air compressor body correspondingly, so that the overall sound insulation effect is better; noise is reduced, meanwhile, later assembly and disassembly are facilitated, and the problem that noise reduction treatment on equipment is not convenient is solved.

The utility model provides a sound insulation and noise reduction device for a rail transit bridge, which comprises a sound insulation and noise reduction base plate, wherein an accommodating groove is formed in the inner side wall of the sound insulation and noise reduction base plate; the movable frame is rotationally connected to the interior of the containing groove through a bearing, and an X-shaped support is fixedly arranged in the middle of the movable frame; the sound absorption cotton and the sound insulation plate are arranged in the movable frame respectively, and the sound absorption cotton and the sound insulation plate are arranged on the two sides of the X-shaped support respectively; and the protection plate is arranged on the sound insulation and noise reduction base plate, and the protection plate covers the containing groove. According to the device, noise can be subjected to double weakening and noise reduction through the sound absorption cotton and the sound insulation plate, the sound insulation and noise reduction effect is improved, the containing groove is detached from the sound insulation and noise reduction base plate, the movable frame is rotated out of the containing groove around the hinge shaft, the sound absorption cotton and the sound insulation plate can be pulled out of the inserting groove to be cleaned or replaced, and operation is convenient and fast.

The utility model provides a large-scale preassembled noise reduction prefabricated cabin, which comprises a track assembly and a plate surface, the track assembly comprises a first mounting rail and a second mounting rail, the front and rear ends of the first mounting rail are rotatably provided with rotating parts, the left and right sides of the first mounting rail are fixedly provided with fixing plates, and the front and rear ends of the second mounting rail are rotatably provided with rotating parts. A fixing plate is fixedly mounted on the second mounting rail, the first mounting rail and the second mounting rail are fixedly mounted through a cross beam and are parallel and symmetrical, the width of the bottom plate is larger than that of the cross beam, an auxiliary sound insulation plate is arranged at the position, protruding out of the cross beam, of the bottom plate, and the side plate and the front plate are mounted in an attached and buckled mode after rotating along with the rotating piece. By means of the modular design and the extensible structure, the cabin body can be rapidly installed and detached, and meanwhile the sound insulation performance and the expansibility of the cabin body are enhanced.

The utility model discloses multilayer hollow sealed sound insulation aluminum alloy door and window, specifically related to aluminum alloy door and window technical field, including window frame, the inside hinged setting of window frame has the window sash, the inside embedding setting of window sash has fixed glass, the inside setting of fixed glass has sound insulation mechanism, and sound insulation mechanism includes the first glass fixed embedding setting in the inside of window sash, and the second glass is arranged between fixed glass and first glass, and the first hollow cavity is arranged between fixed glass and second glass, and the second hollow cavity is arranged between first glass and second glass. The utility model discloses through multilayer hollow glass filling argon, cooperate with the first sound insulation board of medium density fiber, weaken noise, realize efficient sound insulation, and form multiple strict defense lines, effectively prevent noise, rainwater, dust etc. through the gap and intrude indoor, improve door and window sound insulation, waterproof and dustproof performance greatly, guarantee door and window long -term keep good sealed state.

The utility model relates to a mute type gas water heater which comprises a face shell and a bottom shell. The integrated combustor is formed by integrating a combustion device and a heat exchanger, the fuel gas input device is used for providing fuel gas for the combustion device, the water path system passes through the heat exchanger, the fan is arranged at the upper end of the integrated combustor and is used for sucking and discharging combustion waste gas, and a gas inlet part is arranged at the rear end of the bottom shell; the inner side of the air inlet part is provided with a multi-layer sound insulation plate capable of prolonging the length of an air inlet path, the multi-layer sound insulation plate is provided with a plurality of air inlets, the fan is a horizontal direct-current fan, the air inlets of the multi-layer sound insulation plate at least cover part of the fan, external air can naturally flow into the combustion chamber through negative-pressure combustion, the stability of the combustion process is guaranteed, and the combustion efficiency is improved. Meanwhile, the horizontal direct-current fan is adopted, the air inlet amount is increased under the condition of the same rotating speed, and the running noise of the whole machine is reduced.