191 results about "Noise polution" patented technology

The utility model relates to the field of power transformation engineering sound barriers, in particular to a power transformation engineering movable noise reduction barrier capable of being patrolled externally, which comprises a plurality of steel columns, a steel bottom beam positioned at the lower sections of the steel columns and a steel top beam positioned at the upper sections of the steel columns, and the plurality of steel columns, the steel bottom beam and the steel top beam form a sound barrier frame. A sound barrier plate is arranged between every two adjacent steel columns, and the sound barrier frame and the sound barrier plates form a noise reduction barrier. The sound barrier construction period of the transformer substation and the converter station is shortened. According to the utility model, on-site material, machine tool and personnel investment is reduced, construction waste emission is reduced, noise pollution is reduced, and carbon emission is reduced. Daily patrol of operators is facilitated, the device can be quickly moved when the device needs to be carried during maintenance, a channel is reserved for carrying the device, the power failure time is effectively saved, and the working efficiency is improved. The technical problems that the construction period is long, resources are wasted, pollution is serious, and replacement and carrying are inconvenient can be solved.

The utility model discloses an air source heat pump unit with noise reduction and sound insulation, which relates to the technical field of air source heat pump units and comprises a front cover component and an air source heat pump body, the air source heat pump body is mounted in the front cover component, one side of the front cover component is connected with a movable plate, and a base component is mounted at the bottom of the front cover component. The back side of the front cover assembly is connected with a back plate assembly, and wall hanging pieces are symmetrically installed on the side, away from the front cover assembly, of the back plate assembly up and down. According to the air source heat pump unit with the noise reduction and sound insulation functions, the noise reduction pad and the damping plate are arranged on the inner wall of the front cover body, meanwhile, the noise reduction net rack is installed on the surface of one side of the back plate main body, and the movable plate is matched for combined use, so that the noise reduction and sound insulation functions can be provided for operation of the air source heat pump main body as much as possible, and noise pollution caused by device operation is reduced; in addition, through the use of the base assembly and the wall hanging piece, the whole device can be selectively fixed to the wall or the ground according to use requirements.

The utility model relates to the technical field of environmental protection engineering, construction engineering waste treatment and resource recovery, and discloses an environment-friendly concrete waste recovery device which comprises a base, a crushing box is fixedly arranged at the top of the base through a fixing frame, a conveying belt is rotationally arranged on one side of the crushing box, and the other end of the conveying belt is rotationally arranged on one side of a screening box. According to the environment-friendly concrete waste recycling device, the crushing box, the screening box, the dust removal box and the sound insulation plate are arranged, aggregate crushed through the crushing box enters the screening box to be screened, the aggregate of different sizes is collected, dust generated in the screening process is removed through the dust removal box, and the dust removal effect is good. And meanwhile, noise generated in the recycling process can be reduced to a certain degree by a sound insulation plate, and the effects that dust generated in the treatment process can be effectively reduced, aggregate of different sizes can be screened and recycled respectively, and noise pollution generated in the recycling process can be effectively reduced are achieved.

The invention relates to the field of liquid level meters, and discloses an anti-explosion low-temperature liquid level meter which comprises a liquid level meter pipe, a flange plate and a transparent protection plate, the flange plate is arranged at one end of the liquid level meter pipe, the transparent protection plate is installed at a dial on the liquid level meter pipe, and a moving structure is arranged on the right side face of the liquid level meter pipe. The anti-frosting structure is arranged at the other end of the liquid level meter pipe, under the action of the anti-frosting structure, the moving structure and the cleaning structure, purging and wiping work of the transparent protection plate can be achieved, in cooperation with the transmission structure, the moving wiping work of wiping cotton of the purging and cleaning structure can be achieved only under the action of the same electric telescopic rod, and the wiping efficiency is improved. Not only is the working energy consumption lower, but also the noise pollution is reduced; and by arranging the driving structure, when the wiping cotton moves back and forth in the length direction of the liquid level meter pipe, the wiping cotton is driven to move back and forth in the width direction of the liquid level meter pipe, and the wiping effect on the transparent protection plate is improved.

The utility model relates to the technical field of drainage pipe fittings, in particular to a waterproof hammer drainage pipe fitting which comprises an inner pipe and an outer pipe, one end of the inner pipe is a closed end, and a water outlet is formed in the side wall of the inner pipe; the outer pipe is arranged outside the inner pipe in a sleeving manner and is connected with the inner pipe; and the water outlet is communicated with the outer pipe. The closed end is arranged to bear the impact of water flow, after the flow speed of the water flow is reduced, the water flow is guided through the water outlet and the appearance inner wall, the water flow speed is further reduced, and therefore pipeline vibration and noise pollution are avoided.

The invention discloses a noise reduction type disrotatory fog gun, and relates to the technical field of environmental protection. The noise reduction type contra-rotating fog gun comprises an air guide barrel, a first sound absorption barrel, a contra-rotating air outlet device and a spraying device. The first sound absorption cylinder is arranged in the air guide cylinder, a first sound absorption cavity is formed between the first sound absorption cylinder and the air guide cylinder, a plurality of first sound absorption holes are densely formed in the first sound absorption cylinder, the first sound absorption holes communicate with the first sound absorption cavity, the contra-rotating air outlet device is installed in the first sound absorption cylinder, and the spraying device is installed at the air outlet end of the air guide cylinder; the contra-rotating air outlet device comprises a driving part, a first impeller, a reverse transmission assembly and a second impeller, the driving part is connected with the first impeller, the reverse transmission assembly is connected between the first impeller and the second impeller, and the first impeller and the second impeller are coaxially arranged. According to the noise reduction type disrotatory fog gun, long-distance water mist blowing can be achieved, the operation requirements of different scenes are met, noise can be effectively reduced, and noise pollution is relieved.

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.

The utility model relates to the technical field of magnetic core processing, in particular to a material pushing mechanism for magnetic core processing. The magnetic core machining pushing mechanism comprises a base, a connecting frame, a conveying belt, fixing plates, guide rods, springs, a pushing plate and the like, the connecting frame is slidably connected into the base, the fixing plates distributed front and back are fixedly connected to the top of the connecting frame, the conveying belt is rotatably connected to the outer portion of the connecting frame, and the pushing plate is slidably placed between the two fixing plates. The right side of the push plate is fixedly connected with symmetrically-distributed guide rods, the fixing plate is in sliding connection with the transversely-aligned guide rods, the guide rods are sleeved with springs used for assisting resetting, and the two ends of the springs are connected with the fixing plate and the guide rods respectively. The conveying belt is arranged to place the magnetic core, the magnetic core is pushed into the positioning mechanism of the machining equipment, the magnetic core can be prevented from being directly contacted with the base to be abraded, the integrity of the surface of the magnetic core is protected, noise can be prevented, and noise pollution in the working environment is reduced.

The utility model relates to the technical field of lubricating oil pumps, and discloses a lubricating oil pump for a gearbox, which comprises a shell, the top end of the shell is connected with a top cover through a magnetic component, the inner wall of the shell is fixedly connected with a sound insulation pad, the inner wall of the shell is fixedly connected with a pump body, and the left end of the pump body is provided with a driving shaft. A first oil inlet pipe is fixedly connected to the right end of the pump body, a first fixing ring is fixedly connected to the outer wall of the first oil inlet pipe, a second fixing ring is arranged at the right end of the first fixing ring, a second oil inlet pipe is fixedly connected to the inner wall of the second fixing ring, and first clamping rings are arranged on the outer walls of the first fixing ring and the second fixing ring. According to the lubricating oil pump, when the filter plate needs to be maintained and replaced, operation is easy and convenient, complex tools and professional skills are not needed, the maintenance time and cost can be saved, the maintenance efficiency of equipment is improved, the sound insulation pad is arranged on the inner wall of the shell, noise generated when the pump body operates is effectively absorbed, and noise pollution generated when the lubricating oil pump works is reduced.

The utility model provides a vibration grinding and polishing device, and relates to the technical field of polishing equipment, the vibration grinding and polishing device comprises a soundproof box provided with a box cover, a grinding and polishing box with a top opening is arranged in the soundproof box, the grinding and polishing box is fixed in the soundproof box through a plurality of vibration springs, and a vibration motor is arranged at the bottom of the grinding and polishing box; compared with the prior art, due to the fact that the sound insulation box is provided with the box cover, and the sound absorption cotton is arranged on the inner wall of the sound insulation box, the inner wall of the box cover and the outer wall of the grinding and polishing box, when the device runs, noise generated in the device is difficult to diffuse outwards directly, and the grinding and polishing efficiency is improved. Noise pollution to surrounding environments such as workshops and the like is greatly reduced, a relatively quiet working atmosphere is created for operators and surrounding areas, and hearing health of the operators is protected.

The invention discloses a double-layer learner integrated model for predicting the porosity of mixed shale, and relates to the technical field of mixed shale porosity evaluation. According to the technical scheme, the method comprises the following steps that S1, logging data with high correlation with the actually-measured porosity are selected; s2, constructing an optimal learning device; and S3, constructing a double-layer learner integration model. According to the method, the logging data with high correlation with the porosity are preferably selected through a principal component analysis method, so that noise pollution caused by input of a large amount of logging data is avoided; the optimal hyper-parameter value of the machine learning model is searched by using a particle swarm optimization (PSO) algorithm, so that the learning ability of a base learner is improved to the greatest extent; the base learner is used as the first layer learner of the integrated model, and the meta learner of the second layer is combined, so that the integrated model of the double-layer learner is constructed, the purposes of improving the model prediction precision and evaluating the vertical heterogeneity of the pores of the mixed shale reservoir are achieved, and the purpose of guiding unconventional oil-gas exploration and development of the mixed shale is achieved.

The invention relates to the related field of a wireless communication technology, in particular to a directional sound propagation method for an interphone loudspeaker, which realizes directional sound propagation, reduces noise pollution, has stronger confidentiality due to the fact that sound cannot be diffused all around, and realizes directional sound propagation of the interphone loudspeaker through an ultrasonic carrier modulation technology. According to the invention, sound directional propagation is realized on the basis of original hardware of a common interphone, the whole machine does not need to be reconstructed, the limitation that a traditional directional loudspeaker needs special hardware is broken through, the technical path is novel, and the realization cost of a directional propagation function is greatly reduced; and large-scale popularization and application of common interphones are facilitated.

The utility model relates to the technical field of noise pollution prevention and control, in particular to a sound insulation screen for preventing and controlling noise pollution, which comprises a sound insulation mechanism for preventing and controlling noise pollution, and a fixing mechanism for fixing rotating equipment is arranged above the sound insulation mechanism. By arranging the sound insulation mechanism and the fixing mechanism, when a certain sound insulation plate is damaged and needs to be disassembled, a knob is rotated, the knob drives a bidirectional threaded rod to rotate, the bidirectional threaded rod rotates to drive two movable blocks to get away from each other, the movable blocks drive movable rods to move, and the left movable rod and the right movable rod also get away from each other; the movable rods move to be separated from the limiting assemblies, then the inserting rods are detached from the limiting assemblies, limiting of the sound insulation plates is relieved through the limiting assemblies, finally, the damaged sound insulation plates are detached, all the sound insulation plates in the device can be detached independently, the detaching process is convenient and rapid, and the using effect of the device is effectively improved.

The utility model relates to the technical field of metal product processing waste treatment, in particular to a metal product processing waste collecting device with a protective structure, which comprises a bottom plate. A protective shell, a sound insulation door, a repair door, a mounting part, a sound absorption plate and a pressing plate are further included, the protective shell is fixedly arranged on the upper end face of the bottom plate, sound insulation cotton is filled in the protective shell, and a top plate is fixedly arranged on the upper end face of the protective shell; the sound insulation cotton is filled in the protective shell and used for absorbing noise generated during operation of equipment and reducing influences on the external environment, the sound insulation door has a sound insulation effect and brings convenience to material taking and feeding work of operators, the repair door brings convenience to replacement of the sound absorption plate by workers, the repair door also has a sound insulation function, and the sound absorption plate is arranged, so that the sound insulation effect is good. The noise is further absorbed, the overall sound insulation performance of the equipment is improved, and through the multi-layer sound insulation materials and the structural design, noise pollution generated when the equipment operates is effectively reduced.

The utility model relates to the technical field of centrifugal fans, and discloses a low-noise centrifugal fan which comprises a base, a shell is fixedly connected to the outer wall of the base, a rotor is installed in the shell, a motor is installed on the outer wall of the top of the base, and the tail end of an output shaft of the motor extends into the shell and is fixedly connected with the rotor. The rotor comprises a hub and a plurality of blades evenly distributed on the outer wall of the hub, the front edges of the blades are provided with arc-shaped flow guide edges, the rear edges of the blades are provided with sawtooth grooves, a damping mechanism is installed between the base and the motor, and the base is connected with the motor through the damping mechanism. And starting from the key part of the interaction of the airflow and the impeller, the pneumatic noise and the vortex noise are greatly reduced, and the noise pollution condition during the operation of the fan is effectively improved.

The noise reduction type vacuum pump comprises a vacuum pump main body and a driving motor, a mounting groove is formed in the side wall of the vacuum pump main body, a damping and noise reduction mechanism is mounted on the vacuum pump main body, and the damping and noise reduction mechanism comprises a plurality of damping grooves symmetrically formed in the vacuum pump main body; the inner walls of the multiple damping grooves are in sealed sliding connection with multiple damping rods, the other ends of the multiple damping rods penetrate through the inner wall of the mounting groove and are fixedly connected with the side wall of the driving motor, the side wall of the driving motor is fixedly connected with multiple damping springs, and the multiple damping springs are arranged on the side walls of the multiple damping rods in a sleeving mode correspondingly; a plurality of first cavities are formed in the vacuum pump body. Vibration generated in the operation process of the driving motor can be buffered and consumed, so that the vibration is relieved, noise is indirectly reduced, the first sound receiving groove and the second sound receiving groove can also absorb the noise, the noise is further reduced, and noise pollution is avoided.

The utility model discloses a low-noise cross-flow cooling tower which comprises a tower body, a controller fixedly connected to the upper portion of the tower body, fan blades rotationally connected to the upper end of the controller, a shell fixedly installed at the outer ends of the fan blades, and a sound insulation cover fixedly connected to the outer end of the shell. A fixing plate is fixedly mounted on the outer side of the sound insulation cover, and a buffer spring is fixedly connected to the lower end of the fixing plate; the mounting plate is fixedly connected to the inner wall of the tower body, a groove is fixedly formed in the upper end of the mounting plate, a buffer plate is fixedly connected to the front end of the mounting plate, and sound-absorbing cotton is fixedly mounted in the buffer plate, so that the problems that impact noise is generated by impact force of flow on the inner wall of the tower body in the background technology, and noise is caused are solved; and the fan rotates to exhaust hot air in the cooling tower, and when the fan is started, the fan vibrates to generate a large amount of noise, so that eardrums of workers are damaged subsequently.

The utility model discloses a structure and decoration integrated precast concrete slab applied to elevated station transformation, the precast concrete slab is composed of a steel bar group and concrete wrapping the steel bar group, the steel bar group comprises an inverted U-shaped steel bar group, an inverted trapezoidal steel bar group and an inclined reinforcing steel bar group, the inverted U-shaped reinforcing steel bar group is composed of two vertical reinforcing steel bar groups and a first transverse reinforcing steel bar group, the inverted trapezoidal reinforcing steel bar group is composed of a second transverse reinforcing steel bar group, a third transverse reinforcing steel bar group and two inclined reinforcing steel bar groups, and the number of the inclined reinforcing steel bar groups is two; the upper portion of the prefabricated concrete plate is provided with a shutter installation groove used for installing the ventilation and smoke exhaust shutter, and the middle portion and the lower portion of the prefabricated concrete plate are each provided with a glass installation groove used for installing the double-layer laminated glass. The prefabricated concrete slab has the advantages that the adverse factors of long construction period, many potential safety hazards, dust raising, serious noise pollution, limited construction working surface and the like of the traditional integral cast-in-place can be effectively avoided by using the prefabricated concrete slab.

The invention relates to the technical field of thermal compensation of magnetic suspension compressors, and discloses a shell thermal compensation sealing mechanism and method of a magnetic suspension two-stage compressor, which solve the problem of poor sealing performance, the shell thermal compensation sealing mechanism comprises a two-stage compressor outer shell, and a two-stage compressor inner shell is arranged in the two-stage compressor outer shell; a permanent magnet motor is arranged in the second-stage compressor inner shell, radial magnetic suspension bearings are arranged at the left end and the right end of the permanent magnet motor correspondingly, a sensor assembly is arranged on the outer side of each radial magnetic suspension bearing, an axial magnetic suspension bearing stator is arranged on the outer side of the sensor assembly at the right end, and a rotor is arranged in the permanent magnet motor. A protection bearing is arranged outside each rotor, and impellers are arranged at the left end and the right end of each rotor. According to the device, the high-temperature-resistant elastomer is used for reducing noise while reducing vibration, so that noise pollution is prevented, meanwhile, the temperature of the inner shell of the second-stage compressor can be conveniently reduced under the action of the cooling pipe, and the stability of the inner shell of the second-stage compressor is guaranteed.

The utility model relates to the technical field of wake flow breaking and noise reducing devices, and discloses a wake flow breaking and noise reducing device which comprises a barrel body, a first connecting piece and a second connecting piece, one side of the inner wall of the barrel body is provided with an internal thread, the outer side of the end face of one side of the barrel body is fixedly connected with annular teeth at equal intervals, and the outer wall of the barrel body is provided with windows at equal intervals. A plurality of windows are formed in the barrel body, strip-shaped teeth are arranged on the two sides of the interiors of the windows, every two strip-shaped teeth are oppositely arranged, a cylindrical through hole is formed in the barrel body, the side, provided with the internal threads, of the barrel body is an inlet of the barrel body, and the side, provided with the annular teeth, of the barrel body is an outlet of the barrel body. According to the utility model, through the design of the annular teeth at the outlet and the strip-shaped teeth at the window of the barrel body, the fluid is effectively shunted and gently adjusted, and turbulent flow and vortex are obviously reduced, so that the noise is reduced, the environmental comfort is improved, the noise pollution control standard is met, and a quiet and harmonious environment is created for a user.

The pneumatic device of the heat preservation three-way valve comprises a triangular supporting plate, a pneumatic valve body is arranged at the position, close to the bottom, of the front surface of the triangular supporting plate, a valve seat is fixedly arranged at the top of the pneumatic valve body, and energy absorption pads are fixedly arranged at the positions, close to the triangle, of the front surface of the triangular supporting plate. A cavity is formed in the energy absorption pad, a supporting pad is arranged at the position, close to the middle, in the energy absorption pad, and a damping spring is fixedly arranged on the rear surface of the supporting pad. According to the pneumatic device of the heat preservation three-way valve, by arranging an energy absorption pad, a sound absorption cotton strip, a supporting pad, a damping spring and a damping spring, when the pneumatic device is used, the vibration sense generated by the pneumatic device and noise generated by resonance can be absorbed and reduced, the stability of the pneumatic device during operation is improved, noise pollution is reduced, convenience is brought to a user, and the pneumatic device is worthy of popularization and application. The practicability of the device is improved, and the use requirements of users are met.

The utility model relates to the technical field of heat pumps, and provides a low-noise heat pump which comprises a shell, a fan, a condenser, a compressor and an evaporator. The partition plates divide the shell into a plurality of sound insulation cavities; the sound insulation chamber comprises a first sound insulation cavity, a second sound insulation cavity and a third sound insulation cavity; the first sound insulation cavity is formed in the back side of the shell, the fan is arranged in the first sound insulation cavity, and air ports communicating with the outside are formed in multiple side faces of the first sound insulation cavity; the second sound-proof cavity is arranged on the surface side of the shell, the first sound-proof cavity and the second sound-proof cavity are communicated through an air duct, an opening is formed in the surface side of the shell, the condenser is arranged on the second sound-proof cavity and close to the opening, and the second sound-proof cavity is communicated with the outside through the condenser; one side of the third sound insulation cavity is connected with the second sound insulation cavity, the back side of the third sound insulation cavity is connected with the first sound insulation cavity, and the compressor and the evaporator are arranged in the third sound insulation cavity; the condenser is connected with the compressor and the evaporator. The utility model has the advantages of reducing heat pump noise and avoiding noise pollution.

The utility model relates to the technical field of dense phase static pressure type pneumatic conveying, and discloses a dense phase static pressure type pneumatic conveying noise reduction structure which comprises an upper shell, a lower shell is hinged to one side of the upper shell through a hinge, and a plurality of buffer assemblies are fixedly connected to the inner wall of the upper shell and the inner wall of the lower shell. A clamping plate is fixedly connected to the bottom end of the buffering assembly, connecting strips are fixedly connected to one side of the upper shell and one side of the lower shell correspondingly, a plurality of mounting assemblies are rotationally connected into the connecting strips, and two lifting assemblies are fixedly connected to the bottom of the lower shell; the buffer assembly comprises damping hydraulic rods fixedly connected to the inner walls of the upper shell and the lower shell. According to the noise reduction structure for dense-phase static pressure type pneumatic conveying, by arranging the buffer assembly and the clamping plate, the effect of reducing noise of the conveying pipeline is achieved, noise is prevented from being spread to the surrounding environment to cause noise pollution, and the noise reduction capacity of the noise reduction structure for dense-phase static pressure type pneumatic conveying is improved.

The utility model discloses a plastic pipe assembly flat grinding machine, which comprises a flat grinding bottom plate, two steel structure supports and a flat grinding motor, one side of the top end of the flat grinding bottom plate is fixedly connected with the flat grinding motor through the supports, the output end of the flat grinding motor is fixedly provided with a transmission connecting shaft, and one end of the transmission connecting shaft is fixedly provided with a port flat grinding disc. A square connecting frame is mounted on the other side of the top end of the flat grinding bottom plate, a sliding connecting groove is formed in the inner side wall of the square connecting frame, and a scrap suction and noise reduction assembly is slidably mounted in the sliding connecting groove; due to the fact that the scrap absorbing and sound reducing assembly is arranged in the square connecting frame in the sliding mode, and the scrap absorbing and sound reducing assembly is composed of the right dust adhering screen cloth, the foam absorbing plate and the porous sound absorbing inner plate, scraps generated in the plastic pipe flat grinding process can be collected, noise generated in the flat grinding process can be reduced, the overall noise pollution is low, and the working environment can be optimized conveniently.

The utility model discloses a quick exhaust device, which relates to the technical field of exhaust devices and comprises a reaction kettle, first exhaust pipes and second exhaust pipes are arranged on two sides of the reaction kettle, two first exhaust pipes are arranged on each side and are distributed on the front side and the rear side of the reaction kettle, and one second exhaust pipe is arranged on each side. One end of the first exhaust pipe is connected with the reaction kettle, and the other end of the first exhaust pipe is connected with the second exhaust pipe; the electric ball valves are arranged on the two sides of the reaction kettle, and compared with pneumatic valves, the electric ball valves have the advantages of high response speed, high exhaust speed and the like; and by arranging the sound insulation layer, noise pollution generated in the exhaust process is reduced.

According to the dust fall and noise reduction type drilling device for one-time forming of the wall decoration holes, a combined drill bit is arranged outside the left end face of an electric drill body, the combined drill bit is connected with a motor in the electric drill body through a transmission assembly, and the motor drives the combined drill bit to rotate through the transmission assembly; the left end of the electric drill body is provided with a dust collection and noise reduction device which covers the combined drill bit and is always attached to the wall face to collect dust in the drilling process of the combined drill bit, and the exposed length of the combined drill bit is adjusted by adjusting the length of the dust collection and noise reduction device. A laser sensing device used for measuring and displaying vertical coordinate and horizontal coordinate data of a wall aiming point position is installed on the top of the electric drill body. The structure of the connecting position of the drill bit of the handheld drill is optimized, one-time forming of the quincunx-shaped decorative hole can be achieved, the effect of reducing dust pollution and noise pollution is achieved, the structure is simple, positioning is accurate, the edge is neat, pollution is reduced, the forming effect is good, quality is high, and secondary repairing is not needed.

The utility model relates to the technical field of punching aluminum plates, in particular to a punching aluminum plate with a noise reduction interlayer, which comprises a first plate body and a second plate body, a containing groove is arranged on the inner side of the back face of the first plate body, and a hole is arranged on the front face of the first plate body and communicated with the containing groove on the back face of the first plate body. A fixing assembly is arranged between the edge of the first plate body and the edge of the second plate body. In the using process of the aluminum plate structure, noise generated indoors can be conducted into the containing groove through the holes in the front face of the first plate body, so that the sound absorption cotton piece in the containing groove can absorb the generated noise, the noise is prevented from being conducted into an indoor wall, and the aluminum plate structure has the good noise reduction and sound insulation effects; the hollow sound insulation cavity can further reduce the noise transmitted to the wall on the back side of the second plate body through the second plate body, so that the structure can effectively prevent the indoor noise from being transmitted to the indoor wall, the indoor noise is absorbed, and the indoor and outdoor noise pollution is reduced.

Embodiments of the application disclose a highway acoustic control method, a layout method, an edge controller and a system. The highway acoustic control system adopts a "cloud-edge-end" architecture, various types of acoustic devices and information collection devices are deployed along the highway, the edge controller is deployed at the edge, and the server is deployed in the highway command center. The edge controller dynamically analyzes the noise information collected by the information collection device through the acoustic control algorithm and the acoustic recognition algorithm, and adjusts the output volume of the acoustic device. The server can uniformly schedule and control all acoustic devices in the road network through multiple edge controllers. The edge controller of the application can ensure that the driver and passenger can clearly and completely obtain the warning information, avoid damage caused by the acoustic device playing at high volume all the time, and reduce noise pollution to residential areas by implementing the highway acoustic control method and the layout method.

The utility model belongs to the technical field of swing check valves, and particularly relates to a swing check valve capable of buffering water flow and reducing noise, which comprises a valve body, a valve cover is arranged at the top of the valve body, four screws are in threaded connection with the top of the valve cover, the valve cover is fixedly connected to the top of the valve body through the four screws, a barrel is fixedly connected to the valve cover, and a valve rod is arranged on the barrel. A lifting plate is arranged in the cylinder in a sliding mode, and a deflection angle adjusting mechanism is arranged between the lifting plate and the cylinder. The swing check valve is reasonable in structural design, the deflection angle of the valve clack is conveniently adjusted by adjusting the height of the buffer ball, the practicability of the device is improved, the valve clack can be buffered and protected by arranging the buffer ball and the buffer spring, damage caused by collision between the valve clack and the valve body is avoided, the service life of the swing check valve is prolonged, and the service life of the swing check valve is prolonged. And through the sound insulation layer and the sound absorption layer, the valve body has the sound insulation, sound absorption and noise reduction effects, and noise pollution is avoided.

The utility model relates to the technical field of wire and cable processing, and provides a tubular strander for wires and cables, which comprises a base, a main frame and an auxiliary frame, the main frame and the auxiliary frame are arranged on the base, telescopic cylinders are arranged on two sides of the base, a noise reduction assembly is arranged on the base and the telescopic cylinders, and a cabling assembly is arranged on the main frame and the auxiliary frame. The driving motor is installed on the side surface of the main frame, a rotating frame is arranged at the output end of the driving motor, and a bundling disc is arranged at one end of the rotating frame and rotationally connected into the auxiliary frame. By means of the technical scheme, the problems that in the related technology, when a machine rotates for a long time, a large amount of heat is generated by a rotating part, but the generated heat cannot be dissipated, the internal rotating part is damaged due to high temperature, the construction progress is seriously affected, a large amount of noise is generated, noise pollution is caused, the device is prone to being damaged, and the cost is low are solved. And the construction mood of constructors can be influenced.