580results about "Vertical ducts" patented technology

The utility model relates to a lighting, heat-insulating and waterproof window well of a building and belongs to the technical field of window wells. Comprising a basement wall and a lighting assembly, window wells are arranged on the basement wall, the lighting assembly comprises lighting windows and suspended ceilings, the lighting windows and the suspended ceilings are located at the tops and the bottoms of the window wells respectively, the window wells comprise the upper window wells and the lower window wells, and the lower window wells are in a horn shape; a waterproof heat preservation assembly is arranged between the window well and the basement wall, a drainage pipe penetrating through the waterproof heat preservation assembly is arranged in the basement wall, the waterproof heat preservation assembly comprises a waterproof roll layer, a cement mortar smearing layer and a graphite polystyrene board, and the cement mortar smearing layer and the graphite polystyrene board conduct heat preservation on the window well. According to the building daylighting heat-preservation waterproof window well, the daylighting efficiency and uniformity are improved through the design of the outwards-convex-pyramid-shaped daylighting window and the horn-shaped lower window well, the waterproof heat-preservation assembly is combined with the graphite polystyrene board, heat transfer is effectively prevented, the heat-preservation performance is enhanced, and meanwhile the waterproof effect is improved through the waterproof roll layer and the cement mortar smearing layer.

The invention relates to an assembly type integrated fire-fighting smoke exhaust fan room structure which comprises a machine room enclosure bulkhead cylinder body which is provided with a bottom plate, a first side wall and a second side wall, the first side wall and the second side wall are connected with the bottom plate and vertically arranged in parallel, and the two ends of the machine room enclosure bulkhead cylinder body in the horizontal direction are provided with a first opening end and a second opening end which are oppositely arranged correspondingly; the end cover side wall is provided with a first end cover and a second end cover which are respectively arranged at the first opening end and the second opening end; smoke suction and exhaust ports are formed in the first end cover and the second end cover and are used for being connected with a ventilation pipeline; the machine room access door is arranged on the first side wall or the second side wall and can be opened and closed; the fan is arranged in an internal space formed by the machine room enclosure bulkhead cylinder body, the first end cover and the second end cover; the machine room enclosure bulkhead cylinder body, the first end cover, the second end cover and the machine room access door are all of a prefabricated concrete structure. The fabricated integrated design is adopted, the cost is low, the self weight is light, fireproof performance is achieved, and the advantages of being stable, reusable, attractive and the like are achieved.

The utility model discloses construction waste turnover equipment for high-rise building construction, which relates to the technical field of high-rise waste turnover and comprises a waste pipeline. Construction waste is put in from the interior of the feeding hopper, the construction waste slides to the supporting plate on the inner wall of the waste pipeline, then the servo motor is started, the supporting plate drives the construction waste at the top end to descend synchronously, and through descending of the supporting plate, huge impact force generated when the construction waste falls from a high layer can be effectively avoided; when a limiting groove in a fixing shaft is embedded into a limiting block, a supporting plate is rotationally and obliquely opened through a circular shaft under the gravity of the construction waste, then the construction waste better falls into a material receiving vehicle from a waste pipeline, and the function of transferring the high-rise construction waste is achieved; and a construction site can be kept clean and orderly, and construction obstacles caused by garbage accumulation are reduced, so that the construction progress is accelerated, and the overall construction efficiency is improved.

The utility model relates to the technical field of platform household elevators, in particular to a platform household elevator of a modular structure. Comprising a bottom hoistway frame module, a middle hoistway frame module and a top hoistway frame module. The number of the bottom hoistway frame module and the number of the top hoistway frame module are each one. The number of the middle shaft frame modules is set to be larger than or equal to 0 according to the actual elevator running height, and the effects that elevator installation can be rapidly achieved, and therefore the installation efficiency and quality are improved are achieved.

The embodiment of the utility model discloses a prefabricated connecting device for an elevator. The prefabricated connecting device comprises a building body structure, a corridor, an elevator shaft structure and a soft copper cable, the building body structure and the elevator shaft structure are both connected with the corridor; a power circuit is arranged on the outer side of the building structure and used for supplying power to users; the corridor is arranged between the building body structure and the elevator shaft structure and used for connecting channels of different floors; the elevator shaft structure is located on the outer side of the building body structure, vertically extends from the first floor to the top floor and is used as a running channel of an elevator. Path intersection exists between the elevator shaft structure and the power line; the soft copper cable is used for electrical connection at the intersection of the elevator shaft structure and the power line and penetrates through the inner wall of the corridor to be communicated with the power line. According to the embodiment of the utility model, potential safety hazards can be reduced, and the elevator and power lines can be conveniently and independently repaired and maintained.

The utility model discloses a tube well pipeline assembly type installation structure which comprises a plurality of tube well pipeline assembly units which are sequentially spliced in the vertical direction, and each tube well pipeline assembly unit comprises a supporting plate, a plurality of sleeves arranged on the supporting plate, a pipeline arranged in the sleeves, a pipe joint arranged at the end of the pipeline and a support fixedly arranged on the outer side of the pipeline. The support is fixedly connected with a building wall through a fastener. The tube well is assembled in a prefabricated manufacturing and on-site mounting mode, and is poured synchronously with a building main body, so that the construction period is short, the construction cost is reduced, the structural stability is high, the construction operation is convenient, and the practicability is high.

A drain assembly comprises a shroud, a shank, and a frame. The drain assembly may further comprise a shim with an angled top surface. The frame may have an angled bottom surface. A rotational orientation of the angled top surface of the shim relative to the shank and a rotational orientation of the angled bottom surface of the frame relative to the shank may be independently adjustable, thereby allowing for the top surface of the frame to be both angularly and rotationally adjusted relative to a central axis of the drain assembly independent of the positional height of the shank. The drain assembly may further comprise a cover having bendable tabs. The bendable tabs may be disposed around a periphery of the cover and may be configured to contact an angled inner surface of an upper bowl of the shroud, such that the bendable tabs bend around the frame, thereby locking the cover onto the frame.

This invention relates to the field of deep foundation pit support construction technology, specifically a nested support construction process for deep foundation pit elevator shafts and sump pits. It solves the problem that traditional caisson waterproofing technology is prone to failure due to pit wall collapse in highly permeable gravel strata, making it difficult to create stable construction conditions. The process includes a steel caisson support structure, within which a steel caisson waterproofing structure is nested. This steel caisson waterproofing structure is used in conjunction with the steel caisson support structure for nested construction. This invention, through the nested cooperation of the steel caisson support structure and the steel caisson waterproofing structure, and the injection of a self-compacting concrete filling layer, achieves an integrated support and waterproofing effect during construction. It creates a stable, dry, and enclosed working space in easily collapsible, highly permeable strata, solving the problem of failure of traditional single waterproofing technology and creating safe and reliable conditions for subsequent structural construction.

The utility model relates to the technical field of elevator derricks, in particular to an inward bending steel structure derrick for installing an elevator, which comprises a base, a derrick I and a plurality of derricks II, the derrick I is fixedly arranged at the top of the base, and the plurality of derricks II are fixedly arranged at the top of the derrick I in sequence. A plurality of stand columns and cross beams are arranged in the base, the first derrick and the second derrick, four stand columns distributed in a rectangular shape are arranged in the base, the first derrick and the second derrick, and the cross beams are connected between every two adjacent stand columns through bolts. The stand column is formed by inwards folding a steel plate to form a first bending piece and a second bending piece, the end, away from the second bending piece, of the first bending piece is inwards folded to form a third bending piece, and the end, away from the first bending piece, of the third bending piece is inwards folded to form a first bending connecting piece. According to the utility model, the problems of single structure, insufficient performance and stress concentration of connecting nodes of an elevator derrick upright post additionally arranged in an old community are solved, and the overall strength, stability and safety of the derrick are improved.

The protection structure comprises a main body and a shielding assembly, a first air inlet is formed in the top wall of the main body, the shielding assembly comprises a cover plate and a supporting piece, the cover plate is supported above the top wall through the supporting piece and is provided with a second air inlet staggered with the first air inlet, and the first air inlet is communicated with the second air inlet. And a drainage mechanism is further arranged on the main body, specifically, a drainage ditch surrounding the periphery of the first air inlet is arranged, falling rainwater is shielded by the cover plate, rainwater falling from the second air inlet is collected into the drainage ditch on the upper side of the top wall to be drained, it is avoided that the rainwater falls into the well through the first air inlet, and the rainproof effect of protecting equipment in the well is achieved.

The utility model relates to the technical field of building construction garbage cleaning devices, in particular to a rotatable garbage chute channel which comprises a supporting structure, a chute channel body and a rotating structure, the supporting structure is formed by building scaffold steel pipes, and the height of the supporting structure can be adjusted according to actual conditions; the sliding groove channel is formed by splicing wood plates, the size of a single wood plate is 1.5 m * 0.8 m, and the wood plates and the scaffold steel pipes are bundled and fixed through steel wires. The rotating structure comprises angle iron and a bearing, the angle iron is cut into a proper length and then manufactured into a rotatable support, the bearing is installed on the rotating portion of the rotatable support, the bearing is connected with a discharging port, and the discharging port is formed above the temporary garbage pool. The building construction efficiency is improved, the construction cost is reduced, and the construction environment quality is improved.

This invention discloses an installation fixture for aluminum alloy wellbore systems, comprising four positioning fixtures respectively clamped and fixed to columns. Each positioning fixture also has two clamping ends, each clamped and fixed to two adjacent crossbeams. A connecting assembly is provided between adjacent positioning fixtures, a measuring assembly for measuring the distance between adjacent positioning fixtures is provided between adjacent positioning fixtures, and a position adjusting assembly for adjusting the position of the positioning fixtures is provided between the multiple positioning fixtures. This invention uses positioning fixtures to connect to the columns and crossbeams respectively, and adjusts the distance between adjacent fixtures through the connecting assembly to ensure that the distance between adjacent columns is consistent, thereby ensuring the fit between each crossbeam and column and avoiding large splicing seams between the crossbeams and columns that would affect stability. Simultaneously, the position adjusting assembly ensures that the center distance between the four columns and the position adjusting assembly is consistent, guaranteeing the strength and stability of the entire wellbore.

The invention belongs to the technical field of building equipment, and particularly relates to an elevator shaft secondary structure concrete pouring tool which comprises a supporting part, a height adjusting part, a placing part, a pouring funnel and a flow guide pipe, the supporting part is detachably installed on the inner wall of a shaft, the height adjusting part is detachably connected with the supporting part, and the placing part is detachably connected with the height adjusting part; the pouring funnel is installed on the supporting part, one end of the flow guide pipe is connected with the bottom end of the pouring funnel, and the other end of the flow guide pipe is placed in the placing part; after being detached, the tool is small in size and convenient to transfer, so that the labor capacity of carrying parts is reduced, the physical output of constructors is remarkably reduced, and the working environment of high-altitude operation is improved; all parts of the tool are detachably connected, the pouring requirements of secondary structures of different floors and different positions are met, and special tools do not need to be customized for specific scenes; and after construction is completed, parts can be cleaned and recycled, repeated use is achieved, waste of consumables is reduced, and the construction cost is reduced.

The invention discloses an external elevator frame structure of an existing building, which comprises a concrete foundation pit and a steel structure main body, each structural column on the wall side of the steel structure main body is connected with a bearing wall of the existing building through a connecting unit, and the connecting unit comprises a first connecting piece, a second connecting piece, a third connecting piece and a fourth connecting piece; the two first connecting pieces penetrate through a bearing wall of an existing building, the outdoor ends of the first connecting pieces are fixedly connected with the structural columns through the second connecting pieces, and the indoor ends of the two first connecting pieces are welded through the third connecting pieces. Each end part of the two fourth connecting pieces is connected through at least two long screw rods; and the fourth connecting piece is welded with the two first connecting pieces. The steel structure body is externally hung on the building through the connecting units, the steel structure body and the building are tied to form an organic whole, the problem that displacement deformation between an existing additional elevator steel structure and the building body is large under the wind load effect is solved, and the problem that an elevator car cannot fall to an elevator foundation pit due to the displacement deformation is further solved.

The utility model discloses an anti-corrosion garbage pipeline baffle device, and relates to the technical field of garbage pipelines. Comprising a mounting pipe frame, a sliding groove is formed in the inner wall of the mounting pipe frame, and a blocking assembly is arranged on the inner wall of the sliding groove. At the moment, the multiple compression springs extend to push the two ethylene propylene rubber plates to move, so that the protruding end of the right ethylene propylene rubber plate abuts against the inner wall of a sealing groove formed in the side wall of the left ethylene propylene rubber plate, and therefore the inner wall of the mounting pipe frame is blocked; secondly, when the two ethylene propylene rubber plates abut against each other, the fluororubber disc is pulled through an oil rope, so that the surface of the fluororubber disc tightly abuts against a conical arc edge formed in the top face of the mounting pipe frame, and the probability that the fluororubber disc is corroded by acid-base components in the garbage pipeline through the two ethylene propylene rubber plates is reduced; and therefore, harmful gas in the garbage pipeline is prevented from polluting air through the fluororubber disc.

The invention relates to the technical field of building construction, in particular to a kitchen flue hole-lifting-free integrated construction method which comprises the following steps: S1, optimizing a flue hole; s2, the flue formwork is reinforced; s3, concrete pouring; s4, a flue is installed; s5, node sealing treatment is carried out; and S6, performing a closed water test. According to the method, the size of the reserved flue hole is optimized to be matched with the inner overall size of the finished flue, the finished flue can be directly placed on a building structure floor when being installed, and compared with traditional hole hanging method construction, the construction step of filling the fit clearance between the finished flue and the reserved flue hole with concrete is omitted, the construction efficiency is improved, and the construction cost is reduced. Therefore, the forming quality of concrete at the butt joint part of the reserved flue hole and the finished flue is higher, and the risk of leakage of a building floor is reduced.

The utility model discloses an assembly type pipe sealing structure of an indoor pipeline, which comprises a C-shaped steel groove fixedly arranged on the ground, a cement pressure plate, a water inlet pipe, a water outlet pipe, a water inlet pipe, a water outlet pipe, a water outlet pipe, a water outlet pipe and a water outlet pipe, wherein one end of the C-shaped steel groove is propped against a civil engineering wall body and the bottom of the cement pressure plate is inserted into a top opening of the C-shaped steel groove; the bottom of the base plate is placed on the C-shaped steel groove; the veneer is fixedly installed on the C-shaped steel groove, and the side wall of the C-shaped steel groove makes contact with the back face of the veneer; wherein a plurality of supporting blocks which are arranged along a straight line are arranged on the civil engineering wall body, and one side of each supporting block is in contact with the surface of the cement pressure plate. Compared with the prior art, the problems that an existing pipeline wrapping and building technology is complex, and efficiency is low are solved.

The vertical shaft derrick plastic energy dissipation protection beam structure disclosed by the application comprises a plastic energy dissipation component, a support component is fixed to the upper side of the plastic energy dissipation component through a plurality of bolts, a soft steel energy dissipation support is fixed to the two sides of the support component, the other sides of the two soft steel energy dissipation supports are fixed to steel columns, a plurality of buffer supports are further arranged, the buffer supports are fixed to the lower side of a steel beam, the steel beam is arranged above the support component, and the buffer supports correspond to the support component. The energy dissipation protection beam has the advantages of simple structure, convenient installation, wide application in the technical field of impact resistance protection in civil engineering and mechanical engineering, effective absorption and dissipation of impact energy, cooperation of multiple dissipation components and protection components, greatly improved energy dissipation capacity of the protection component, easy installation and replacement of the plastic energy dissipation components, low cost, and high protection efficiency.

The utility model belongs to the technical field of cavity floor system application, and particularly discloses an air exhaust and smoke exhaust integrated assembly type cavity floor system. Comprising a head end assembly type cavity floor system, a plurality of middle assembly type cavity floor systems, a tail end assembly type cavity floor system, a lower through groove, a first transverse through groove, a second transverse through groove, a third through groove, a fourth transverse through groove, a fifth through groove, a first air guide pipe, a second air guide pipe, an external air guide pipe and the like. The air exhaust and smoke exhaust integrated assembly type cavity floor system has the advantages that the function of the assembly type cavity floor system is expanded, a traditional air exhaust and smoke exhaust pipeline is replaced, on one hand, the construction period is shortened, and on the other hand, the building construction cost is correspondingly reduced; and 2, a plurality of first inclined baffles, a plurality of second inclined baffles and a plurality of third inclined baffles which are respectively matched with the first gas guide pipe, the second gas guide pipe and the external gas guide pipe for use play a role in preventing the flue gas from flowing backwards.

The utility model relates to the technical field of construction waste treatment, in particular to a conveying device convenient for high-rise construction waste treatment, which comprises a conveying mechanism, the conveying mechanism comprises a conveying pipeline, and two inner side walls of the conveying pipeline are fixedly connected with a plurality of rotating seats at equal intervals. And the interiors of the multiple rotating seats are rotationally connected with material supporting plates. According to the automatic stacking and falling device, the material supporting plates are rotationally connected to the two inner side walls of the conveying pipeline, the fixing bases are arranged below the material supporting plates, the first reset springs are fixedly connected between the fixing bases and the material supporting plates, and the two material supporting plates located on the same horizontal line are in a V shape, so that automatic stacking and falling of garbage are achieved, frequent manual operation is not needed, and the labor intensity of workers is relieved. And the processing efficiency is improved. Through cooperative arrangement of a material supporting plate, a connecting ring, a first rope, an outer shell, a movable plate, a sliding block, a second reset spring and a winding unit, the material supporting plate can be manually controlled to turn over, and the problem that garbage is accumulated too much and cannot automatically fall is solved.

The invention belongs to the technical field of pipeline interlayers, and discloses a construction method of an electromechanical pipeline interlayer free of formwork removal and an electromechanical pipeline interlayer structure. The construction method comprises the following steps that S1, a plurality of pipeline supports are fixed into a plurality of interlayer formworks correspondingly; s2, the electromechanical pipeline is divided into pipeline sections corresponding to the multiple pipeline supports, and the multiple pipeline sections are installed on the corresponding pipeline supports; s3, a plurality of interlayer formworks are hoisted to the to-be-constructed position of the pipeline interlayer on the floor slab; s4, forming a sandwich structure body; and S5, every two adjacent pipeline sections communicate with each other. According to the construction method, the interlayer formwork and the pipeline support are prefabricated, the electromechanical pipeline is installed in advance, then the interlayer formwork is installed in a sectional type hoisting mode, and finally the interlayer structural body is constructed, so that construction of the interlayer of the electromechanical pipeline can be completed, and the novel construction mode avoids the problem that workers repeatedly enter and exit a narrow interlayer space for construction; the construction is convenient, and the construction efficiency is improved.

The ceiling structure comprises a ceiling frame formed by four side plates in a surrounding mode in sequence, a cover plate is arranged at the upper end of the ceiling frame, openings are formed in the side plates, shutters are arranged in the openings, hinge seats are arranged on the front sides of the side plates, hinge shafts are arranged at the upper ends of the shutters, and the shutters are arranged on the hinge seats. The hinge shaft is rotationally installed on the hinge seat, and a driving mechanism used for driving the shutter to swing with the hinge shaft as the axis is arranged on the inner side of the side plate. Firstly, the shutters are not fixedly arranged on the side plates and are hinged to the hinge seats through hinge shafts at the upper ends, however, when the shutters cannot achieve good ventilation and heat dissipation, heat in the hoistway is hot, at the moment, the shutters can be driven by the driving mechanism to swing outwards, the openings in the side plates are exposed, and then the shutters are driven by the driving mechanism to swing outwards. Therefore, the ventilation and heat dissipation effects in the hoistway are greatly improved, the comfort during elevator taking is improved, and the requirements of users are met.

The invention relates to a multi-industry integrated factory building which comprises an industrial factory building body, a production line is arranged in the industrial factory building body, a greenhouse and a touring and entertainment area are arranged on the roof of the industrial factory building body, a first visiting channel is arranged between the greenhouse and the touring and entertainment area, and a second visiting channel is arranged in the industrial factory building body. An elevator is arranged between the first visiting channel and the second visiting channel, a draught fan is arranged on the periphery of the carbon dioxide generating area of the industrial factory building body and connected with an air flue, the air flue is connected to an outer layer vertical channel arranged between the ground and the roof of the industrial factory building body, and an inner layer vertical channel is arranged in the outer layer vertical channel. The inner-layer vertical channel is communicated with the inner space of the outer-layer vertical channel on the periphery of the inner-layer vertical channel through a gas inlet in the bottom, the inner-layer vertical channel is provided with a filtering mechanism, the top end of the inner-layer vertical channel is connected to a gas tank through a gas pipeline, the gas tank is located in the greenhouse, a valve is arranged at a gas outlet of the gas tank, and the plant integrates three industries.

The utility model relates to the technical field of abandoned cave dwelling reconstruction, and discloses a structure reinforcing device for abandoned cave dwelling reconstruction, which comprises a cave dwelling support frame, reinforcing components are uniformly distributed in the cave dwelling support frame, and a handheld rod is fixed at the top end of a sealing plate. The ventilation pipes are assembled on the two sides and the top of the outer wall of the outer heat preservation plate and used for follow-up ventilation work, the filter box is arranged on the right side of the cave dwelling supporting frame, the filter plate is installed in the filter box, and meanwhile the positioning base can be fixed to the bottom in the filter box. The filter cartridge is filled with needed activated carbon or bamboo charcoal, then a worker holds the handheld rod and rotates the handheld rod, and at the moment, the threaded connection block is matched with the internal threads on the inner wall face of the filter cartridge to complete threaded locking, so that after the fan is started to work and supply air, airflow can be filtered and deodorized through the positions of the filter plate and the filter cartridge; in this way, the overall airflow circulation effect is well improved in the working process, and the ventilation convenience is improved.

The invention relates to the technical field of light guide well forming, and discloses a light guide well pouring forming structure which comprises an annular inner formwork and an outer formwork arranged on the periphery of the inner formwork in a sleeving mode, the outer formwork is arranged around the periphery of the inner formwork, and an inner cavity is defined by the inner formwork. An annular area for pouring concrete to form the light guide well is formed between the inner template and the outer template; the inner formwork comprises a plurality of curved plates bent transversely, the curved plates are sequentially arranged in a surrounding mode, a top connecting structure is arranged between every two adjacent curved plates, and the tops of the adjacent curved plates are relatively fixed through the top connecting structures. An inner supporting structure is arranged in the inner cavity, the inner supporting structure is provided with a plurality of inner supporting rods swinging inwards or outwards, and the multiple inner supporting rods correspondingly abut against the multiple curved plates from inside to outside to limit the bottoms of the curved plates to be folded inwards; and through the arrangement of the inner formwork, the outer formwork and the inner supporting structure, the forming effect of the light guide well can be effectively improved, and the requirement for high-quality forming of the light guide well in modern building engineering is met.

The utility model discloses an aluminum alloy hoistway bearing fixing piece which comprises a base, a supporting plate and reinforcing ribs. The connecting structure is characterized in that the base comprises a first transverse connecting part, a second transverse connecting part and a corner post connecting part; one end of the first transverse connecting part is bent at a preset angle to form the second transverse connecting part, and the vertical extension part of the bent part between the first transverse connecting part and the second transverse connecting part forms a corner post connecting part; the corner post connecting part is fixedly connected with the first transverse connecting part and the second transverse connecting part respectively; the supporting plate is fixedly connected with the first transverse connecting part, the second transverse connecting part and the corner column connecting part. When the aluminum alloy hoistway is used, the aluminum alloy hoistway has the advantages that the structural stress is improved, the structural strength is improved, materials are saved, the cost is reduced, and the installation is convenient.

This invention relates to the field of elevator shaft formwork technology, and discloses a rapid formwork structure for elevator shafts and its construction method. The structure includes an elevator shaft body, a mounting base, a lifting assembly, an electric hydraulic cylinder, a fixing plate, and fixing pins. The mounting base is fixedly installed on one side of the elevator shaft body. The lifting assembly is installed inside the mounting base. Electric hydraulic cylinders are symmetrically fixedly installed on the top of the mounting base. Fixing plates are fixedly installed on the tops of both electric hydraulic cylinders. Through the cooperation between the lifting assembly, electric hydraulic cylinders, fixing plates, and fixing pins, the electric hydraulic cylinders can drive the fixing plates downwards, and the fixing plates can drive multiple fixing pins downwards. Inserting the fixing pins into the soil fixes the rapid formwork structure, eliminating the need for manual hammering of the fixing pins. This makes the rapid formwork structure more secure and improves the stability of the elevator shaft's rapid formwork structure.

The utility model belongs to the technical field of noise reduction, and provides an L-shaped noise control structure which surrounds a downpipe and comprises a first flat plate and a second flat plate which are perpendicular to each other, the first flat plate and / or the second flat plate comprises a noise reduction inner layer and a reinforced outer layer, the noise reduction inner layer is formed by a light material, and the reinforced outer layer is formed by curing slurry. A through-hole structure and / or a concave hole structure are / is arranged in the noise reduction inner layer, the through-hole structure or the concave hole structure is filled with slurry of the strengthening outer layer, and the side edges of the first flat plate and the second flat plate are fixed to a building wall or an air duct in a sealed mode. According to the anti-noise structure, the noise reduction inner layer is arranged on the inner side of the L-shaped anti-noise structure, so that the influence of water falling noise on the indoor environment is effectively reduced; and meanwhile, the noise reduction inner layer is provided with a hollow structure and / or a concave hole structure which can be filled with the slurry of the reinforced outer layer, so that the connection between the noise reduction inner layer and the reinforced outer layer is enhanced, the separation between the two layers is effectively prevented, the impact resistance and compression resistance of the L-shaped noise control structure are improved, and the mechanical property of the L-shaped noise control structure is improved.