214results about How to "With noise reduction function" patented technology

The invention relates to temperature adjusting humidity adjusting coating and a preparation method thereof. The temperature adjusting and humidity adjusting coating comprises thermal insulation undercoat, phase transition energy storage intermediate coat and heat conduction humidity adjusting finish. The undercoat insulates heat, and the phase transition energy storage intermediate coat transmits indoor energy through the finish and stores energy through the phase transition, and thereby effectively adjusting indoor temperature. The phase transition energy storage intermediate coat and the humidity adjusting function of the finish impart the whole coating temperature adjusting and humidity adjusting function. In addition, the temperature adjusting and humidity adjusting coating has the advantages of being fireproof, waterproof, antifouling, mechanical, capable of eliminating peculiar smell, sterilizing, insulating heat, removing sound, protecting environment and the like. The temperature adjusting and humidity adjusting coating is applicable to various kinds of constructional coating.

The invention discloses an intelligent noise elimination system with a directional noise reduction function and belongs to the noise reduction field. The intelligent noise elimination system includes an audio sensor, a noise elimination subsystem, an adaptive filter, a sound generation system and an intelligent cloud platform, wherein the audio sensor, the noise elimination subsystem, the adaptive filter and the sound generation system are embedded in equipment, and the intelligent cloud platform is arranged on a cloud end and wirelessly communicates with the noise elimination subsystem; the intelligent cloud platform collects and stores the audios of various sound sources online or offline, fill an audio library with the audios, carries out library construction and training so as to generate identification parameters corresponding to various kinds of noises, and determines the offset factor of a noise source; the noise elimination subsystem collects a sound source at a specified direction through the audio sensor, preprocesses sound waves, and then compares the sound waves with noise samples on the intelligent cloud platform, carries out identification and classification, obtains the offset factor of the noise source, and transfers corresponding data to the adaptive filter; the adaptive filter generates a reverse waveform signal sequence of noise sound waves; the sound generation system generates reverse sound wave interference waveforms of the noises; and the noise sound waves and the reverse sound wave interference waveforms offset each other, so that noise reduction is achieved.

The invention discloses an engine cold-start preheating device. A heat storing heat exchanger (3) is in a parallel connection with an exhaust pipe (2) of an engine (1), the heat storing heat exchanger (3) is used for storing exhaust air waste heat of the engine (1), the heat storing heat exchanger (3) is in a columnar structure, a plurality of heat storing units are distributed in the heat storing heat exchanger (3), each heat storing unit is a concentric casing pipe (7) which comprises an inner pipe and an outer pipe, a phase change thermal storage material (8) is encapsulated in annular space between the inner pipe and the outer pipe, two ends of the inner pipe are welded on two flow guide plates (9) respectively, a hollow cavity for enabling cooling water of the engine (1) to flow through is formed by the two flow guide plates (9) and inner walls of the heat storing heat exchanger (3), and the inner walls of the heat storing heat exchanger (3) are located between the two flow guide plates (9). The engine cold-start preheating device has the advantages of being low in costs, small in size, efficient, energy-saving and convenient to popularize and use in a wide range.

The invention discloses an infrared remote sensing image super-resolution reconstruction method based on TGV regularization. The method comprises the steps that a remote sensing infrared image super-resolution reconstruction model based on TGV regularization is obtained; a Huber function is utilized to perform semi-quadratic regularization to split the remote sensing infrared image super-resolution reconstruction model based on TGV regularization, so that a split image super-resolution reconstruction model is obtained; and an alternate direction multiplier method is utilized to perform value solving on the split image super-resolution reconstruction model to generate a super-resolution reconstruction image. Through the method, a noise reduction function can be achieved, good detail maintaining capability is obtained, and a peak signal-to-noise ratio, a signal-to-noise ratio and evaluation index values of an average structure similarity, information entropy, etc. can be effectively increased.

The invention relates to a PVC (polyvinyl chloride) floor with noise reduction and elastic functions. The PVC floor comprises a base material layer, wherein an insulated waterproof MPPO (modified polyphenylene oxide) layer is embedded inside the underside of the base material layer. three moisture-proof noise-reduction holes are formed inside the base material layer, a middle layer is arranged above the base material layer, an elastic fiber layer is arranged above the middle layer, a fiber stabilized and reinforced layer is arranged above the elastic fiber layer, a PVC layer is arranged above the fiber stabilized and reinforced layer, a UV (ultraviolet) paint layer is arranged above the PVC layer, the elastic fiber layer is a warp and weft woven fiber layer formed by a soybean fiber layer or a linen fiber layer or the soybean fiber layer and the linen fiber layer, and one or two or three of vermiculite, foam glass and expanded perlite is/are arranged in the three moisture-proof noise-reduction holes. The PVC floor has moisture-proof, insulation, noise-reduction and worm damage prevention functions, also has elasticity, is suitable for home use, has comfortable foot feeling, has a simple structure, can be installed conveniently and has no gaps.

The invention provides a GSM digital wireless repeater system, which is a wireless carrier wave frequency selection repeater system; the system comprises an uplink and a downlink; the uplink comprises an MT end duplexer, an uplink low-noise amplifier, a lower frequency conversion module, an uplink baseband processing unit, an upper frequency conversion module, an uplink amplifier and a DT end duplexer which are connected in turn; the downlink comprises a DT end duplexer, a downlink low-noise amplifier, a lower frequency conversion module, a downlink baseband processing unit, an upper frequency conversion module, a downlink amplifier and an MT end duplexer which are connected in turn; the MT end duplexer is connected with a signal of a mobile phone user through a covering/receiving antenna; and the DT end duplexer is connected with a signal of a base station through a retransmitting antenna, wherein the uplink baseband processing unit comprises an A/D convertor, a DDC digital lower frequency conversion channel, an Ec/Io decision circuit, a digital filtering unit, a DUC digital upper frequency conversion channel and a D/A convertor which are connected in turn. The system can effectively inhibit noise and has strong maneuverability and low cost.

The invention provides an SCR (selective catalytic reduction) catalytic converter for diesel engine tail gas treatment. The SCR catalytic converter comprises a shell, a left baffle, a right baffle, a gas inlet tube, a gas return pipe, a gas outlet tube and a catalyst carrier component, wherein the left and right baffles are installed in the shell at intervals and divide the shell into a gas suction cavity, a mixed cavity and a gas exhaust cavity; the left baffle is provided with multiple opening holes which can communicate the gas suction cavity with the mixed cavity; the gas inlet tube is inserted in the shell from the left end face of the shell, penetrates through the left baffle and is closely connected with the right baffle, the gas inlet tube is provided with multiple rows of small holes at the position of the mixed cavity; the gas return pipe is inserted from the left baffle, is closely connected with the right baffle and is provided with multiple rows of small holes; the gas outlet tube is inserted in the shell from the right end face of the shell; and the catalyst carrier component is arranged in the mixed cavity, the axial direction of the catalyst carrier component is inparallel to that of the gas inlet tube and is respectively communicated with the gas suction cavity and the gas exhaust cavity. The SCR catalytic converter provided by the invention has the advantages and characteristics of good flow property, better mixing property of exhausted gas and urea and moderate pressure loss, thus having a certain function of noise elimination.

The invention relates to a replaceable dual-layer shutter with anti-haze and denoising functions. The replaceable dual-layer shutter with the anti-haze and denoising functions comprises a soundproof felt curtain piece, anion curtain pieces, sealing rubber, an aluminum alloy curtain fixing frame, curtain piece rotary shafts, pull ropes, replaceable activated carbon cloth, rotary gears and a soundproof curtain piece alloy outer frame. The replaceable dual-layer shutter with the anti-haze and denoising functions adopts the dual-layer structural mode with the two layers using different materials, such as the soundproof felt curtain piece and the anion curtain pieces and realizes the functions of anti-haze, denoising and the like by the fact that people select and use different curtains, so the life of people is more comfortable.

The invention provides a structural design proposal for a novel healthy energy-saving building. The structural design proposal ensures that the building has good ventilation effect and has functions of energy conservation, sun shading, insect prevention, dust prevention and noise reduction at the same time, and also ensures that the indoor temperature is not lower than 15 DEG C in winter and not higher than 24 DEG C in summer under the condition of no use of any energy and the relative humidity is between 40 and 50 percent and the indoor oxygen content is improved by more than two times, is favorable for the health of human bodies and the energy conservation, and greatly reduces the using amount of air conditioners, namely reduces the using amount of Freon, thereby having unneglectable effect on the protection of an ozone layer in the atmosphere. The design on a window abandons the design of the prior window, adopts a multifunctional window, does not need an opening sash, and also has a multilayer glass structure, so the structural design proposal has high sound insulation property, and can achieve no insects, no dust and high anti-theft performance indoors.

The invention relates to the technical field of water pumps, and discloses a water pump with a noise reducing function. The water pump with the noise reducing function comprises a supporting seat; the middle of the inner cavity of the supporting seat is clamped with a sound insulating plate; the two sides of the supporting seat are both fixedly connected with supporting frames; the bottoms of the two supporting frames are respectively and fixedly connected with the two sides of the top of a base; the top of the base is fixedly connected with three air pressure cylinders equidistantly; the tops of the three air pressure cylinders are all fixedly connected with air pressure rods; each of the tops of the three air pressure rods is fixedly connected with a connecting plate; the top of each connecting plate is fixedly connected to the bottom of the supporting seat; a motor is fixedly mounted at one side of the top of the supporting seat; one side of an output shaft of the motor penetrates through a torque sensor to fixedly connect one side of a shaft coupling; the other side of the shaft coupling is fixedly connected with one side of the water pump. According to the water pump with the noise reducing function, shock absorbing and buffering effects can be achieved when the supporting seat is shocked through cooperative use of the air pressure cylinders, the air pressure rods and the connecting plate, so that the production of noises can be greatly reduced.

The invention discloses a lightweight denoising polybutylene terephthalate material. The material is prepared from the following components by weight: 60 to 70 parts of polybutylene terephthalate, 10 to 20 parts of glass beads, 10 to 30 parts of glass fibers, 0.2 to 0.5 part of a lubricant, 0.5 to 0.8 part of an antioxidant and 0.5 to 0.9 part of a coupling agent. The preparation method comprises the following steps: subjecting 60 to 70 parts of the polybutylene terephthalate, 10 to 20 parts of the glass beads, 10 to 30 parts of the glass fibers, 0.2 to 0.5 part of the lubricant, 0.5 to 0.8 part of the antioxidant and 0.5 to 0.9 part of the coupling agent to uniform mixing at a high speed via a high-speed mixer; then pouring the mixed materials into a screw extruder; and carrying out stranding pelletizing via the screw extruder so as to obtain the lightweight denoising polybutylene terephthalate material. According to the invention, since the glass beads are added in formulation of the material, mechanical properties of the material are improved while low density of the material is kept; meanwhile, due to the special structure of the hollow particles of the glass beads, the material has a certain denoising function, and thus, the material has high application values in vibration reduction, denoising and cost reduction in the fields like automobiles, airplanes and electronic components.

The invention provides a lawnmower with a noise reduction function, and relates to the technical field of lawnmowers. The lawnmower with the noise reduction function comprises a base, wherein the bottom of the base is fixedly provided with a fixing plate, the bottom of the fixing plate is fixedly provided with damping legs, the bottoms of the fixing legs are fixedly provided with universal wheels,one side of the base is fixedly provided with a fulcrum bar, and the top of the fulcrum bar is fixedly provided with a handle. According to the lawnmower with the noise reduction function, a frame plate is arranged to support the lawnmower overhead, the frame plate is put up through a damping spring, the side wall of the frame plate is provided with a rubber ring, the rubber ring is in contact with side plates, so that the lawnmower is more stable, the damping spring and the rubber ring have a good damping effect, can buffer vibration, the vibration can be transferred to other parts through amotor, thus the noise emission is effectively reduced, a sound proof box is arranged to isolate and absorb the noise generated by the motor, an acoustic panel is arranged to absorb the noise generated by cutting blades, and thereby the effect of the noise on surroundings when mowing is effectively reduced.

The invention discloses an inside spin type high-temperature-resisting ultra-quiet drainage pipe and a manufacturing method thereof to solve the problem that existing drainage pipes are high in noise, not resistant to high temperature and high in cost and relates to the technical field of drainage. The inside spin type high-temperature-resisting ultra-quiet drainage pipe comprises a denoising layer, wherein spiral ribs are arranged on the inner wall of the denoising layer, the denoising layer is manufactured from, by weight, 20-35 percent of block co-polypropylene, 5-10 percent of viscous elastic bodies, 50-70 percent of barium sulfate, 2-3 percent of dispersing agents, 1-2 percent of coupling reagents, and 1-2 percent of lubricants, and a high-temperature-resistant polypropylene resin layer is further arranged on the outer surface of the denoising layer. According to the spin type high-temperature-resisting ultra-quiet drainage pipe and the manufacturing method thereof, by means of the denoising layer and the spiral ribs on the inner wall of the denoising layer, water falling noise of a building plastic pipeline system can be reduced to a level below 35 decibel, the heat-resistance temperature of a pipeline can reach 90 DEG C, the manufacturing cost of the drainage pipe is 10% less than that of a flexible cast-iron pipe, the service life of the pipe can reach 50 years, and the drainage pipe is easy to install, low in cost, economical and practical.

The invention discloses a donkey-hide gelatin cake cutting machine. The donkey-hide gelatin cake cutting machine comprises a screw cap, a material pushing bar, a knife dish component, a material holding box, a machine body, foundations, a motor and a control switch, wherein a cover cap and a material pushing cavity are arranged on the screw cap, and an opening at the bottom of the screw cap is communicated with the knife dish component; the material pushing bar can be inserted into a hollow passageway of the material pushing cavity; the knife dish component is installed at the upper part of the machine body, and a cutting blade is horizontally installed in a weld knife dish and can rotate around a rotating shaft; the material holding box is movably arranged on one side of the machine body and is located below a discharge hole of the weld knife dish; the machine body provides installing bases for all the components; the foundations comprise a machine body foundation and an electronic control module installed on the machine body foundation; the motor is installed inside the machine body through a motor support and is connected to the rotating shaft of the cutting blade; the control switch controls start and stop of the motor. According to the donkey-hide gelatin cake cutting machine, quantitative cutting of the decocted donkey-hide gelatin cake barstock can be achieved, blanking is uniform and stable, bonding and damage of donkey-hide gelatin blocks can be avoided, appearance of a donkey-hide gelatin cake slice product is improved, convenience is brought to eating of a client, the situation that a finger accidentally touches the cutting blade from a material feeding opening is prevented, and thus the safety of operating personnel is guaranteed.

The invention discloses a method for upgrading a common tyre to an explosion-proof leakproof tyre. The method comprises the following steps: dismantling an old tyre and removing the tyre from a hub; polishing the internal surface of the tyre with a steel brush, clearing off impurities such as a release agent, wax and the like from the internal surface; melting a polymer synthesis memory rubber material block, and spraying the molten polymer synthesis memory rubber material onto the internal surface of the tyre; cooling the tyre with the internal surface sprayed with the rubber material to be solidified; remounting the dismantled hub onto the tyre sprayed with the memory rubber material; and carrying out dynamic balancing and calibration on the tyre equipped with the hub. The upgraded tyre comprises a tyre main-body, and the bottom of the internal surface of the tyre is coated with a layer of the polymer synthesis memory rubber material. As the polymer synthesis memory rubber material has high strength, high stretchability and high viscosity, it can be guaranteed that the tyre is leakproof and explosion-proof when pierced by a foreign matter and has a noise-reduction function.

A compound cylinder head cover with an integrated air filter comprises a cylinder head base, cylinder head cover, clip, oil filter plate, filter bracket, filter paper, filter ring, seal ring, screw, gasket and metal lining for the screw. The cylinder head base with the filter bracket, filter ring and filter paper and the cylinder head cover occupy enough hexahedron space in the front of mobile engine chamber. The filter bracket is located in diagonal in the hexahedron space. By using engineering plastics to substitute aluminium alloy for the compound cylinder head cover can integrate functions, save the front space of the engine chamber and maximum the filter area.

The heat sink module with sound silencing function includes one separated finned heat dissipating assembly and one centrifugal fan. The centrifugal fan to output airflow to the finned heat dissipating assembly for removing its heat includes centrifugal vanes fixed onto the rotor of one motor, and one shell for the motor and centrifugal vanes to be fixed inside it. The finned heat dissipating assembly includes one finned block near the heat dissipating target and one head dissipating flow channel casing with the finned heat dissipating block and the heat dissipating target inside it, and the inner wall of the flow channel has sound silencing uneven structure.

The invention discloses a plant allocation method used for hollowed fence inner side greening. Key points of a technical scheme of the method are that plant combination allocation is divided into A, B, and C layers according to different height levels; B-layer planting stocks are close to a fence D; A-layer planting stocks are planted on the outer side of the B-layer planting stocks; and C-layer planting stocks are fully planted on a lower layer of the A-layer planting stocks. Plant allocated on the same A layer is any one selected from phyllostachys iridescens, phyllostachys bumbusoides, phyllostachys propinqua, phyllostachys violascens, phyllostachys aureosulcata, and phyllostachys heteroclada. Plant allocated on the same B layer is any one selected from euonymus japonicus column, euonymus japonicus column, viburnum odoratissimum column, and photinia fraseri column. Plant allocated on the same C layer is any one selected from fatsia japonica, aucuba japonica, and nandina domestica. With the application of the plant allocation, resident privacy requirements can be satisfied, and an ecological living space with senses of belonging and comfort can be built. The plant allocation also has a noise-reducing function. With the method, a high-efficiency energy-saving city residential area noise-reducing plant mode can be created.

The invention discloses an adjustable pre-air treatment system device for a medical atomizer, and solves the technical problems in the prior art that the structural design is not reasonable, the entering mode of compressed air is not adjustable, the waste of a medicine liquid and weakening of the medicine effect are caused, the prepared compressed air contains condensed water, bacteria are easy tobreed in an atomizing cup body pipeline, and the safety is low. The adjustable pre-air treatment system device for the medical atomizer comprises a control system, a gas pipeline and a pre-air treatment adjustment device arranged on the gas pipeline, the two ends of the gas pipeline are provided with an air inlet and an air outlet nozzle respectively, and the air outlet nozzle is connected with an atomizing cup body through the pipeline; the pre-air treatment adjustment device comprises a pressure control device and a flow control device, and the pressure control device and the flow control device are electrically connected with the control system respectively. The adjustable pre-air treatment system device for the medical atomizer can be widely applied to the technical field of medical equipment.

The invention provides a traction machine fixer with a noise reduction function and an application method thereof. The traction machine fixer comprises a lifting device, wherein the lifting device comprises a connecting rod, rotating shafts, pneumatic rod main bodies, a power air pipe, a lifting device main body, first supporting columns, telescopic pneumatic rods, an air pump, bearings and secondsupporting columns, the air pump is fixedly mounted in the lifting device main body, the pneumatic rod main bodies are fixedly connected to one side of the inner wall of the lifting device main body,the telescopic pneumatic rods are slidably sleeved inside the pneumatic rod main bodies, and the telescopic pneumatic rods and the connecting rod are rotatably connected through the rotating shafts;and the two ends of the connecting rod are fixedly connected with the bearings, the second supporting columns and the first supporting columns are rotatably connected through the bearings, one ends ofthe second supporting columns and one ends of the first supporting columns are rotationally connected with the bottom of the traction machine fixer, the other ends of the second supporting columns and the other ends of the first supporting columns are rotationally connected to the inner wall of the lifting device main body, and the bottom four corners of the lifting device are fixedly installed with cushion foot pads. According to the traction machine fixer, noise during working of a traction machine is effectively reduced, the applicability of the traction machine is improved at the same time, and maintenance and repair of the traction machine are more convenient.