16results about How to "Lower the decibel" patented technology

The invention discloses a suspended ceiling structure, and relates to the field of suspended ceilings, the suspended ceiling structure comprises a wall top and a wall, the bottom of the wall top is provided with a sound absorption component, the bottom of the wall top is provided with a plurality of suspenders, the bottoms of the suspenders are provided with damping components, and the bottoms of the damping components are connected with light steel keels through fixing screws. The light steel keel is divided into a main keel body and an auxiliary keel body, the main keel body is connected to the top of the auxiliary keel body through fixing screws, a first sound insulation component is arranged between the main keel body and the auxiliary keel body, and a second sound insulation component is arranged at the bottom of the auxiliary keel body. By means of the structure, noise between floors can be reduced, the noise reduction effect is optimal, and residents can have a quiet and comfortable environment when having a rest.

This invention discloses a micro-perforated noise-reducing air outlet structure and a hair dryer with the micro-perforated noise-reducing air outlet structure. The micro-perforated noise-reducing air outlet structure includes a shell with an air outlet; a fan assembly installed inside the shell and axially distributing air towards the air outlet; and a micro-perforated component, which is a box-shaped structure with an inner cavity. The micro-perforated component is installed inside the shell and connected to the air outlet. The circumferential sidewall of the micro-perforated component and the inner sidewall of the air outlet are spaced apart to form an air outlet channel. Several micro-holes are opened on the sidewall of the micro-perforated component facing the fan assembly. The inner cavity is connected to the inside of the shell through the micro-holes, and a sound-absorbing component is placed in the inner cavity. The inner cavity of the micro-perforated component constitutes a sound-absorbing cavity that is not air-permeable, achieving a sound-absorbing effect without increasing wind resistance or reducing the air velocity and air pressure.

The utility model discloses a blast furnace gas pipeline silencer which comprises a shell, a gas inlet is formed in one side of the shell, a gas outlet is formed in the other side of the shell, a silencing assembly is arranged in the shell and comprises a silencing plate, a second silencing cavity is formed in the inner wall of the shell, and a gas outlet is formed in the other side of the shell. The inner wall of the second silencing cavity is connected with a sound absorption plate through bolts, one side of the sound absorption plate is connected with a silencing plate through bolts, the circumferential inner wall of the silencing plate is provided with a first silencing cavity, the circumferential outer wall of the silencing plate is connected with a fixing column through bolts, and one end of the fixing column is connected with the inner wall of the shell through bolts. According to the blast furnace gas pipeline silencer, due to the fact that the silencer is provided with the silencing assembly, the noise reduction effect of the device can be better improved, and due to the fact that the device is provided with the overhauling assembly, the service life of the device can be better maintained.

The utility model discloses a heat-pump water heater, which relates to the technical field of heat pumps, and comprises a shell, a heat exchanger, a water inlet pipe, a water outlet pipe, a water inlet pipe and a water outlet pipe, an evaporator; the fan is positioned above the evaporator in the height direction; the upstream silencing plate is located between the evaporator and an inlet of the fan in the height direction; the downstream silencing plate is positioned above the outlet of the fan in the height direction; and under the action of the fan, gas entering from the air inlet can sequentially flow through the evaporator, the upstream silencing plate, the fan and the downstream silencing plate. The problem that the fan of the heat-pump water heater is high in noise can be solved.

The utility model discloses an air intake and exhaust silencer of a cogeneration unit, which relates to the technical field of cogeneration units and comprises a unit shell, an air intake pipe and an exhaust pipe are arranged on two sides of the unit shell respectively, and silencing cylinders are arranged at the ends of the air intake pipe and the exhaust pipe. Through the arrangement of the lead screw, the guide ring, the threaded block, the torsional spring, the clamping disc, the clamping hook, the gear ring and the gear, when the silencer is installed, a worker inserts the silencing barrel into the air inlet pipe or the exhaust pipe, then the worker rotates the gear ring, and the silencer is installed on the air inlet pipe or the exhaust pipe. The gear ring rotates to enable the gear to rotate, then the lead screw rotates, the threaded block drives the clamping hooks to move downwards, under the action of the guide ring, the multiple sets of clamping hooks can be folded inwards, when the clamping hooks move downwards to a certain degree, the clamping hooks can be tightly connected to the clamping disc in a lap joint mode, and then the silencing cylinder installation work is completed.

The utility model provides a residual pressure noise reduction and efficiency improvement device for ceramic membrane equipment, which belongs to the technical field of noise reduction of the ceramic membrane equipment and comprises a residual pressure exhaust pipeline, a first electric valve is arranged on the residual pressure exhaust pipeline, a pressure dividing cylinder is arranged at the air outlet end of the residual pressure exhaust pipeline, and a bypass pipeline is arranged between the pressure dividing cylinder and the first electric valve. The bypass pipeline is communicated with the excess pressure exhaust pipeline, the two sides of the pressure dividing cylinder are respectively provided with a first pressure relief pipe, and the air outlet end of each first pressure relief pipe is communicated with a noise reduction device. Pressure gas is exhausted into the pressure dividing cylinder through the excess pressure exhaust pipeline, pressure is guided into the first pressure relief pipes on the two sides through the pressure dividing cylinder, and the noise reduction device is arranged at the air outlet end of each first pressure relief pipe; the first pressure relief pipe extends into the noise reduction cylinder in the noise reduction device, so that pressure impact is reduced through a water body, noise is counteracted, then pressure relief and noise reduction operation is completed, the decibel of the noise is effectively reduced, the ceramic membrane equipment can be remotely matched for frequent operation, and a good working environment is provided for workers.

The invention discloses a rotary type mute air outlet device which comprises a butt joint pipe installed at an air outlet of a fresh air system, a limiting buffer mechanism located on one side of the butt joint pipe, a noise reduction channel installed at one end of the butt joint pipe and arranged between the butt joint pipe and the noise reduction channel, and an exhaust mechanism. The exhaust mechanism is arranged on one side of the noise reduction channel, and the flow dividing pipe is arranged in the noise reduction channel and used for guiding out part of airflow; compared with the prior art, when airflow enters the interior of the noise reduction channel, under the blocking effect of the air blocking ring, the airflow can be guided into a gap of the air blocking ring in cooperation with a buffer plate, part of the airflow is guided out along an exhaust hole, and the airflow can be exhausted from the sub airflow channels; the noise generated by airflow speed change due to the fact that internal airflow enters a narrow pipeline can be reduced, and therefore it is guaranteed that the decibel of the air outlet device is low in the using process.

The utility model discloses a novel Roots vacuum pump exhaust port noise reduction and noise elimination maze chamber for a paper machine net part, which comprises a noise reduction and noise elimination maze chamber main body, maze chamber walls are arranged on the periphery of the noise reduction and noise elimination maze chamber main body, and a noise reduction and noise elimination maze chamber channel is arranged on the outer side of the noise reduction and noise elimination maze chamber main body. The noise-reduction and noise-elimination labyrinth chamber comprises a noise-reduction and noise-elimination labyrinth chamber body, labyrinth chamber walls are built on the two sides of the noise-reduction and noise-elimination labyrinth chamber body, the interior of the noise-reduction and noise-elimination labyrinth chamber body is communicated with a roots vacuum pump exhaust port pipeline, an exhaust outlet is formed in an outlet of the noise-reduction and noise-elimination labyrinth chamber body, and a labyrinth chamber top is built on the tops of the labyrinth chamber walls and the labyrinth chamber walls. The novel Roots vacuum pump exhaust port noise reduction and elimination labyrinth chamber for the paper machine net part is composed of the labyrinth chamber in the middle and the labyrinth chamber channel on the outer ring, the Roots vacuum pump directly discharges gas into the labyrinth chamber, the noise decibel is gradually reduced through sound absorption and noise reduction, and the problem that exhaust noise affects life, work and rest of surrounding residents is solved.

The utility model provides an atomizing core which comprises a porous base body and a heating body arranged on the surface of the porous base body, and the heating body comprises a plurality of heating parts arranged at intervals. A protruding part is arranged on the surface of the side, close to the heating body, of the porous base body and fixedly connected with the porous base body, and the protruding part protrudes outwards towards the side, away from the porous base body, of the heating body compared with the side, away from the porous base body, of the heating body. The protruding part comprises a partition part, the partition part is located between every two adjacent heating parts, and every two adjacent heating parts are separated by the partition part. According to the atomizing core, by arranging the protruding parts, mutual interference of the adjacent heating parts in the working process can be reduced, and therefore condensate is reduced; and the bulge part can reflect and absorb the atomization noise, so that the decibel of the atomization noise is reduced. The utility model further provides an electronic atomizer.

The utility model relates to an aluminum-wood composite out-opening window, which belongs to the technical field of composite out-opening windows and comprises a window frame, two window sashes are mounted in the window frame, a vertical rod is fixedly connected to the middle of the window frame, the two window sashes are respectively arranged on two sides of the vertical rod, glass bodies are mounted in the window sashes, and battens are fixedly connected in the window sashes. According to the utility model, the section bar III, the glass plates and the battens are matched for use, and the section bar III is made of an aluminum wood material, so that the hollow section bar III can better block the propagation of noise, and the three layers of glass plates can further block the propagation of noise and can reduce the harm of ultraviolet rays to indoor personnel; the wood strips are made of wood, and the wood contains certain holes, so that the wood can absorb more noise, the decibel of the noise transmitted into a room through the out-opening window is reduced, a good and comfortable environment is provided for indoor personnel, and the attractiveness of the out-opening window can be improved.

The present invention discloses a modular sound insulation wall panel, comprising an exterior wall panel, one side of the exterior wall panel is fixedly connected to a left wall panel, the other side of the exterior wall panel is fixedly connected to a right wall panel, the top and bottom ends of the exterior wall panel are fixedly connected to a bottom panel, the rear surface of the bottom panel is fixedly connected to a rear wall panel, the upper surface of the bottom panel is fixedly connected to a honeycomb sound absorbing panel, the upper surface of the bottom panel is fixedly connected to a first partition panel, the upper surface of the bottom panel is fixedly connected to a second partition panel, and nine slide grooves are evenly arranged on the front surface of the second partition panel; the honeycomb sound absorbing layer can absorb high-decibel noise, convert vibration into deformation energy of its core material, cause vibration of air and material, and due to friction and viscous resistance, part of the sound energy of the noise is converted into heat energy, which can reduce decibels and stabilize the noise frequency band; after the stabilized noise frequency band, ultrasonic waves will be absorbed by the ultrasonic sound absorbing panel, and infrasound waves will be absorbed by the infrasound sound absorbing panel.

The utility model belongs to the technical field of silencers, and discloses a silencer structure which comprises an air inlet pipe, the outer side of the air inlet pipe is sleeved with a sealing cover, a partition plate is fixedly connected to the interior of the sealing cover, a connecting rod is slidably connected to the interior of the partition plate, one end of the connecting rod is fixedly connected with a positioning block, and the other end of the connecting rod is fixedly connected with a connecting rod. A shell is attached to the interior of the sealing cover, a first spring is embedded in the shell, one end of the first spring is fixedly connected with a top ring, and a limiting groove is formed in the shell. By means of the technical scheme, the problems that in the prior art, when a silencer needs to be maintained, the silencer cannot be rapidly disassembled and assembled, and the service life of the silencer is prolonged are solved. The problems that workers are difficult to maintain, the working efficiency of the workers is reduced, and the practicability of the silencer is not high are solved.

The present invention discloses a novel material distribution mechanism for a pipette tip loading machine, which is suitable for tips and includes a bottom plate, on which a roller, a hopper and a conveying assembly are arranged, the roller is connected to a roller motor control, the roller is connected and communicated with the hopper, a bearing structure is evenly distributed on the inner wall of the inner circumference of the roller, and an opening is arranged on the top of the hopper; one end of the conveying assembly passes through the hopper and extends into the roller, and the other end of the conveying assembly is arranged outside the hopper, and a guide nozzle is arranged below the conveying assembly arranged outside the hopper, and a through hole is arranged in the guide nozzle. The present invention realizes automation, improves the compatibility of the present invention with general tips on the market, reduces the failure rate, reduces the production cost, reduces the decibel, improves the stability of the whole machine, and saves the volume of the whole machine after assembly, is easy to repair and maintain, reduces the difficulty of repair, and improves work efficiency.

The utility model relates to direct current speed reduction motor technical field, specifically disclose a kind of noise reduction device for direct current speed reduction motor, including motor cover, the one end of motor cover evenly fixed installation has several support strips, the other end of support strip is fixedly installed with fixed ring, the lateral wall of fixed ring is evenly fixed installation with several ear plates, the utility model will motor cover sleeve connection in the one side of direct current speed reduction motor with heat dissipation fan, and through ear plate fixed on the outer wall of direct current speed reduction motor, soundproofing cotton one covers heat dissipation fan, the noise generated when working is absorbed to heat dissipation fan, simultaneously, direct current speed reduction motor when working, vibration force is transmitted to support seat, support seat transmits vibration force to buffer component, spring and damper are compressed or stretched, while rotating block one rotates in rotating block two, offset the vibration force generated by direct current speed reduction motor, reduce the decibel of noise generated, and can let motor stable operation simultaneously.

The utility model provides a flexible connecting structure of a wall body and a side keel, and relates to the field of side keels. The flexible connecting structure of the wall body and the side keel comprises an elastic blocking structure, the elastic blocking structure comprises a self-adhesive glue layer, the top of the self-adhesive glue layer is fixedly connected with the bottom of a fireproof gypsum layer, the top of the fireproof gypsum layer is fixedly connected with the bottom of an anti-extrusion aluminum frame, and a sound insulation sponge layer is arranged in the anti-extrusion aluminum frame. According to the flexible connecting structure for the wall body and the side keel, through the arrangement of the self-adhesive glue layer, the fireproof gypsum layer, the anti-extrusion aluminum frame, the sound insulation sponge layer, the waterproof gypsum layer, the glass fiber grid layer, the reinforced connecting layer and the external mortar layer, the decibel of sound spread along a solid can be effectively weakened, and therefore the probability of disturbing others is reduced; and meanwhile, the problem of cracking at the joint of the wall body and the keel is solved.

The invention relates to the technical field of automobile exhaust pipe structures, in particular to an exhaust pipe and a control method. Comprising a silencing pot, two groups of first tail pipes, a second tail pipe, a sound acquisition unit and a sound playing unit, the silencing pot is a hollow cavity communicated with an air inlet pipe, and a plurality of partition plates are arranged in the silencing pot to divide the internal space of the silencing pot into a plurality of silencing chambers which are communicated with one another; the two tail pipes are arranged on the two axial sides of the silencing pot respectively, the inlet end of the first tail pipe extends into a silencing cavity in the silencing pot, and the outlet end of the first tail pipe is located on one axial side of the silencing pot. The inlet end of the first tail pipe extends into a silencing cavity in the silencing pot, the outlet end of the first tail pipe is located on one side of the silencing pot in the axial direction, and a control valve for controlling the second tail pipe to be connected and disconnected is arranged on the second tail pipe. The sound acquisition unit is arranged on one side of the silencing pot; the sound playing unit is arranged on the other side of the silencing pot. The exhaust pipe is simple in structure, the exhaust sound effect can be actively controlled, and individual requirements are met.