34results about How to "Good noise isolation" patented technology

The invention aims to provide an automobile wiring harness protective sleeve convenient for vehicle door wiring harness installation and later period maintenance. The automobile wiring harness protective sleeve comprises a hollow tubular main body (1), tubular fixed parts (2) and (3) are arranged at both ends of the main body (1), an annular groove (21) is arranged on the outer surface of the tubular body of the fixed part (2), and an annular groove (31) is arranged on the inner surface of the tubular body of the fixed part (3). The automobile wiring harness protective sleeve enables the butted point between the vehicle door wiring harness and the main wiring harness in the vehicle body to be transferred to the sheet metal hole from the inside of the vehicle body, thereby greatly simplifying the assembly procedures and facilitating the modular assembly of the vehicle door and the later period maintenance, and the automobile wiring harness protective sleeve has simple structure and low cost and is suitable for being widely popularized.

The invention relates to an air quality regulation method having fresh air exchange and purification functions and belongs to the field of household air conditioners. The air quality regulation method aims to solve the problems existing in indoor air through two function integration modes of an air conditioner and an indoor air purifier. The air quality regulation method comprises the steps that an axial air compressor pumps in and compresses outdoor air; the fresh air is led into a plate heat exchanger through a guide tube; air temperature adjustment and control are performed therein; then, the air flows into an inner cavity of an air transmission unit, enters an eddy current air multiplication humidifier through a hollow shaft of the air transmission unit and is blown into a room under the action of the eddy current air multiplication humidifier; original indoor foul air is extruded out of the room by the continuous clean air, so the purposes of fresh air exchange and air purification are achieved. Meanwhile, the hollow shaft of the air transmission unit drives the eddy current air multiplication humidifier (2) to rotate, the rotation direction comprises two degrees of freedom, and therefore 360-degree air discharge without dead angles is achieved.

The housing for a centrifugal compressor consists of at least two plastic housing parts for accommodating a compressor wheel and for defining a helical compressor duct, an annular space being formed in the housing between the compressor wheel accommodating compartment and the compressor duct, said annular space encircling the compressor wheel and at least one stabilizing element being introduced into it.

The invention relates to an optical fiber sensor which is suitable for a natural gas pipeline leakage detection system. The optical fiber sensor consists of an elastic cylinder (3), a fiber optic interferometer (4) and a tail fiber disk fiber box (5), wherein interference arms of the fiber optic interferometer are uniformly and orderly wound on the periphery of the elastic cylinder (3); an optical fiber and the elastic cylinder are tightly bonded together by using a bonding agent; the fiber optic interferometer left after winding and relevant devices of the fiber optic interferometer are orderly wound in the tail fiber disk fiber box (5); the tail fiber disk fiber box (1) is fixed on the top of the elastic cylinder (3) by using a bonding agent; the elastic cylinder (3) is a steel short cylinder of which the bottom is inwardly depressed and the radian is consistent with that of the outer surface of a pipeline; and during installation of the sensor, the inwardly-depressed end of the elastic cylinder (3) is bonded on the surface of a natural gas pipeline by using a bonding agent. A front end probe with high positioning accuracy and high sensitivity is provided for a quasi-distributed natural gas pipeline leakage detection system.

The application belongs to the technical field of mud treatment, and provides a mobile dehydration drying system for mud. The dehydration drying system adopts integrated and unitized design, an equipment facility is divided into a plurality of unit systems, each unit system equipment is integrated and improved, and the unit systems mainly include an impurity-removing concentration system, a curingagent delivery system, a homogenization stirring system, a press dehydration system, a tail-water treatment system and an automatic control system; and the unit systems are respectively integrated into a vehicle-mounted container, body and tower, and have the advantages of convenient transportation, a small floor space, and convenient disassembly and assembly. The system provided by the inventioncan quickly and deeply dehydrate and dry the mud, and has very strong adaptability for projects where a mud storage location is in a city center, a construction site area is small, and large-scale equipment cannot be installed.

The invention provides a built-in earplug type noise reduction earmuff, which relates to the field of technical audio equipment, and solves the technical problem of improving a noise isolation effect. The earmuff comprises an earmuff shell, and an audio noise reduction circuit board and an in-earmuff loudspeaker installed inside the earmuff shell; an audio port of the in-earmuff loudspeaker is connected to an audio output port of the audio noise reduction circuit board; the earmuff is characterized by further comprising an earplug capable of being placed inside the earmuff shell; the earplug is internally provided with an in-earplug loudspeaker; an audio port of the in-earplug loudspeaker is connected to an audio plug through an audio cable, and an outer wall of the earmuff shell is equipped with an audio socket; and the audio socket is connected to the audio output port of the audio noise reduction circuit board. The earmuff provided by the invention can effectively isolate harsh noises.

The invention relates to a mixing barrel, and specifically relates to a mixing barrel with an adjustable radiation effect, comprising a barrel, wherein the barrel comprises a cylindrical lateral wall consisting of an inner wall and an outer wall sleeved on the inner wall; a cavity is formed between the inner wall and the outer wall; the cavity is provided with a plurality of first blades distributed circumferentially along the lateral wall; one end of the cavity is provided with an air inlet, while the other end is provided with an air outlet; the air inlet is provided with an openable ventilation door; the first blades are connected on a drive ring which is coaxial with the lateral wall. The invention provides a mixing barrel with an adjustable radiation effect which can conveniently change the radiation effect of the barrel based on requirements, thereby solving the problem of poor universality caused by that existing mixing barrels can only be in the state of heat insulating or heat conducting.

The invention discloses a novel heat-preservation energy-saving aluminum alloy door and window. The novel heat-preservation energy-saving aluminum alloy door and window comprises an aluminum alloy door and window frame, a fixed window structure, two sets of movable window structures and at least four sets of fixing assemblies. The novel heat-preservation energy-saving aluminum alloy door and window is attractive and beautiful in overall appearance, especially suitable for being mounted on a balcony, good in lighting, capable of making the interior of a room transparent and bright, creating anopen environment atmosphere, easily making indoor people keep a good mood which is beneficial to physical and psychological health of the indoor people, quite convenient to mount, especially suitablefor being mounted after decoration of a built house is completed, and capable of avoiding the problem that during house decoration, the novel heat-preservation energy-saving aluminum alloy door and window is polluted and needs to be cleaned again, and consequently manpower and material resources are consumed; and assembling is convenient, the assembling efficiency can be effectively improved, theheat-preservation energy-saving effect is good, the noise isolation effect is also good, especially a quiet, warm and comfortable environment can be provided for the indoor people in winter, and the physical and is beneficial to psychological health of the indoor people.

The invention relates to an electric power engineering transformer electromechanical installation platform. The platform comprises a base used for placing a transformer and supporting columns locatedon the periphery of the base; the supporting columns are circumferentially distributed around the central axis of the base at equal angles; fixed pulleys are arranged at the top ends of the supportingcolumns and provided with connecting ropes in a striding mode; one end of each connecting ropes are connected with the base, and the other end of the connecting rope is connected with multiple balancing weights; locking pieces abutting against the connecting ropes are arranged on the supporting columns. With the above technical schemes adopted, the base and the transformer are lifted through thebalancing weights, the transformer is separated from the ground, the base and the transformer are in a dynamic balance state by adjusting the balancing weights, and the sliding friction force of the connecting ropes is reduced through the fixed pulleys. Compared with a mode of directly placing the transformer on the ground, the flexible connection mode greatly reduces vibration and noise, therebyfacilitating the improvement of the living comfort of surrounding dwellings. The locking pieces play a role in facilitating adjustment and installation.

The invention provides an intelligent ecological safety window. A window frame is fixed to a wall face, the window frame is connected with a glass window body and a side baffle through a telescopic rod, one end of the telescopic rod is fixed to the glass window body, the middle of the telescopic rod is fixed to the side baffle, and the other end of the telescopic rod is fixed to the window frame.An intelligent controller is arranged at one end of the telescopic rod at the bottom of the window frame, bottom baffles are arranged at the two ends of the bottom of the window frame, and an escape ladder is mounted between the bottom baffles. The intelligent ecological safety window has the advantages that the window body is a piece of multi-layer tempered glass, and the intelligent ecological safety window is designed in a packaging mode, and has the good functions of theft prevention, dust prevention, noise insulation, heat preservation and mosquito and insect prevention. The intelligent ecological safety window is provided with an intelligent escape device, an escape device can be started up manually or automatically under emergency situations such as fires, and personnel can evacuaterapidly and conveniently.

The invention discloses a network switch cover. The network switch cover comprises a framework, a casing covering the framework, and a sound abatement side board and an end face door which are oppositely arranged on the framework, wherein the framework, the casing, the sound abatement side board and the end face door form an enclosed space, the network switch is arranged in the enclosed space, the top face of the framework is provided with a top sound abatement channel, the bottom face is provided with a bottom sound abatement channel, one end of the top sound abatement channel is provided with a top air flow outlet communicated with an outer portion of the enclosed space, the other end is provided with a top air flow inlet communicated with an inner portion of the enclosed space, the top air flow inlet is equipped with an air pumping part used for pumping the air flow into the top sound abatement channel, one end of the bottom sound abatement channel is provided with a bottom air flow inlet communicated with the outer portion of the enclosed space, and the other end is provided with a bottom air flow outlet communicated with the inner portion of the enclosed space. The network switch cover is advantaged in that the network switch cover realizes noise reduction, realizes good heat radiation, has a simple structure, is convenient to process and has wide application occasions.

The invention provides damping paint for an engine. The damping paint comprises raw materials in parts by weight as follows: 290-310 parts of plasticizing acrylic emulsion, 35-45 parts of antimony (III) oxide, 35-45 parts of melamine, 18-22 parts of active magnesium hydroxide and 138-162 parts of functional filler. The damping paint for the engine has good flame retardance, noise isolation property and resistance to acid, alkali and salt spray, and meets application demands of the engine.

The invention relates to the technical field of automobile body accessories, in particular to a skylight sunshading plate. The skylight sunshading plate comprises a polyurethane plate, a first glass fiber felt layer, a second glass fiber felt layer, an ultraviolet reflecting layer and a nonwoven fabric layer. The first glass fiber felt layer covers the polyurethane plate; the second glass fiber felt layer covers the bottom of the polyurethane plate; the ultraviolet reflecting layer is arranged on the first glass fiber felt layer; the nonwoven fabric layer is arranged underthe second glass fiber felt layer. The skylight sunshading plate is simple, compact and reasonable in structure, rapid and convenient to assemble and reliable in connection; the hardness of the sunshading plate is increased, and the service life of the sunshading plate is prolonged; the production cost is low, and the sunshading sun-proof effects are good; heat insulation and noise insulation effects are good; the weight is low; the use reliability of the sunshading plate is greatly improved, and the skylight sunshading plate is easy to use and popularize.

The invention discloses a process method for automobile bottom plate powder coating. The process method comprises the following steps: preparing raw materials, uniformly mixing the raw materials, performing melting extrusion by using a double-screw extruder, and finally crushing and grinding so as to obtain a powder coating; performing sand blasting roughening on an automobile bottom plate, performing ejection degreasing cleaning, performing hot water cleaning treatment, and performing drying treatment; preheating the pretreated automobile bottom plate, and performing powder coating operation on the surface of the preheated automobile bottom plate by using an electrostatic spray gun in an electric field environment; and performing high-temperature curing on the coated automobile bottom plate, cooling, performing quality inspection, and packaging after qualification, thereby obtaining a coated automobile bottom plate. The process method disclosed by the invention is simple to operate, mild in curing condition and short in curing time, and an obtained coating film has good properties of corrosion resistance, rusting resistance, collision prevention, noise prevention, wearing resistance, impact resistance and the like, is high in strength, good in dispersibility and good in adhesion property, plays a good protection role on an automobile bottom plate, is capable of effectively prolonging the service life of the automobile bottom plate, and is worthy of popularization.

The invention discloses a server cabinet. The server cabinet comprises a frame type underframe and a frame type upperframe. The underframe and the upperframe are fixedly connected through four vertical guide rails, and the guide rails are provided with a row of equipment installation holes for fixation server equipment; guide rail installation holes are distributed in the underframe and the upperframe, the four guide rails are fixed on the underframe and the upperframe by use of screws, and front and rear positions of the guide rails are adjusted according to the dimensions of the fixation server equipment; and a front door, a rear door, a left-side plate and a right-side plate are respectively installed at front, rear, left and right positions of the server cabinet, and the top portion of the server cabinet is covered by a top cover. According to the invention, the server cabinet has high rigidity and strength and excellent performance including electromagnetic isolation, grounding, noise isolation, ventilation, heat dissipation and the like, and the guide rails themselves can be repositioned in the cabinet according to the depth of equipment and are adjusted to be at the proper front and rear fixation positions.

The invention discloses a piece of vacuum glass. The vacuum glass comprises outer layer glass, inner layer glass, safety layers and an upholder, wherein the safety layers are respectively arranged inside the outer layer glass and the inner layer glass, the upholder is arranged between the inner layer glass and the outer layer glass, and the outer layer glass and the inner layer glass are sealed at the periphery. Due to the adoption of the technical scheme, the vacuum glass has high reliability, good heat insulation effect, good sound insulation effect and good safety performance, and has wide market prospect in the field of glass.

The invention discloses a fresh air ventilator. The fresh air ventilator comprises a right side plate, a left side plate, a bottom plate, a back plate, a door sheet assembly, a right inner side plateassembly, a left lower inner side plate assembly, a left middle inner side plate assembly, a silencing mesh plate, a top filtration supporting seat, a fan mounting plate assembly, a heating mesh frame, a middle cross beam, a control panel box assembly, an air volume meter supporting column, a Shengjiu hinge, a door pull rod, a middle cover plate, a hanging frame, a top plate assembly and a lower wind shield, the right side plate and the left side plate are fixed on the corresponding two sides of the bottom of the bottom plate through bolts correspondingly, the back plate is fixed on one side of the right side plate and one side of the left side plate through bolts, the top plate assembly is fixed at the bottom of the right side plate, the bottom of the left side plate and the bottom of theback plate through bolts, one side of the right side plate is connected with the door sheet assembly through the Shengjiu hinge, the door sheet assembly is connected with the top plate assembly through the door pull rod. According to the fresh air ventilator, the sound insulation performance is good, the service life of the fan is prolonged, and the indoor environment sanitation and the body health of people can be protected.

A two-channel air-cooled small gasoline generator, comprising a case (1), an engine assembly (2), a silencer (3) and a magneto assembly (4) with a fan, wherein the engine assembly (2), the silencer (3) and the magneto assembly (4) are arranged in the case. The gasoline generator further comprises: a first air guiding hood (21), arranged on the engine assembly (2) in a coating mode; an air duct (32), one end of the air duct being connected to the first air guiding hood (21), and the other opposite end of the air duct being communicated with the outside; a second air guiding hood (31), arranged on the silencer (3) in a coating mode and provided with an air outlet (311) communicated with the outside; and a third air guiding hood (41), arranged on the magneto assembly (4) in a coating mode and further communicated with the second air guiding hood (31). In the generator, the engine is cooled at high efficiency, thermal power attenuation of the engine is effectively reduced, and the output of the magneto is efficient; accordingly, high-efficiency operation of the generator is guaranteed, and a good noise isolation effect is achieved with the sealed air duct.

The present invention relates to a floor impact noise isolator for construction and a method for constructing a floor using the same. The present invention provides a floor impact noise isolator for construction, including a noise isolating body; and a reinforcing member formed with an inflow hole which is filled with mortar. In addition, the present invention provides a method for constructing a floor of a building, comprising the steps of installing the floor impact noise isolator according to the present invention; and introducing mortar into the inflow hole formed in the reinforcing member of the noise isolator. According to the present invention, the noise isolating body is supported by the reinforcing member and the inflow hole formed in the reinforcing member is filled with mortar to thereby have excellent strength and prevent a crack from occurring in the mortar layer. Further, a local load distribution is transformed into a surface load distribution, thereby improving a noise isolation property.

The invention relates to a bearing device (10) for a drive unit (1), wherein the drive unit (1) has a drive motor (11) which interacts with a transmission element (15) via a drive shaft (12) with multiple bearings, having a first bearing (18) which is arranged on the opposite side of the drive motor (11) with respect to the transmission element (15), a second bearing (19) which is arranged between the drive motor (11) and the transmission element (15), and a third bearing (20; 20a; 20b; 20c) which is arranged on the side of the transmission element (15) which faces away from the drive motor (11), wherein the third bearing (20; 20a; 20b; 20c) is arranged so as to be movable in a direction perpendicular to the longitudinal axis of the drive shaft (12). According to the invention there is provision that the third bearing (20; 20a; 20b; 20c) is embodied as a single-piece component which both accommodates the drive shaft (12) at its end region (30) and is accommodated in a receptacle (24) of a positionally fixed element, in particular a housing element.

The invention discloses a transformer partial discharge ultrahigh frequency locating analyzer and a locating analyzing method thereof. The transformer partial discharge ultrahigh frequency locating analyzer comprises a signal conditioning unit (1), a signal processing unit (3), a precise time-delay unit (2), wherein the signal conditioning unit (1) is used for receiving the discharge signals collected by a probe and carrying out conditioning on the received discharge signals, the signal processing unit (3) is used for calculating a discharge distance, the precise time-delay unit (2) is used for carrying out time delay on the conditioned discharge signals, and the refined time-delay unit (2) is further connected with the signal processing unit (3), sends the delayed signals to the signal processing unit (3), and receives the time-delay control signals of the signal processing unit (3). According to the transformer partial discharge ultrahigh frequency locating analyzer and the locating analyzing method thereof, a normal sampling circuit can carry out sampling analysis on high-frequency discharge signals through the time-delay technology, and the transformer partial discharge ultrahigh frequency locating analyzer and the locating analyzing method thereof have the advantages of being low in circuit manufacturing cost, good in stability coefficient, convenient to control and the like.

The invention provides damping paint for an engine. The damping paint comprises raw materials in parts by weight as follows: 290-310 parts of plasticizing acrylic emulsion, 35-45 parts of antimony (III) oxide, 35-45 parts of melamine, 18-22 parts of active magnesium hydroxide and 138-162 parts of functional filler. The damping paint for the engine has good flame retardance, noise isolation property and resistance to acid, alkali and salt spray, and meets application demands of the engine.

The invention relates to an air quality regulation method having fresh air exchange and purification functions and belongs to the field of household air conditioners. The air quality regulation method aims to solve the problems existing in indoor air through two function integration modes of an air conditioner and an indoor air purifier. The air quality regulation method comprises the steps that an axial air compressor pumps in and compresses outdoor air; the fresh air is led into a plate heat exchanger through a guide tube; air temperature adjustment and control are performed therein; then, the air flows into an inner cavity of an air transmission unit, enters an eddy current air multiplication humidifier through a hollow shaft of the air transmission unit and is blown into a room under the action of the eddy current air multiplication humidifier; original indoor foul air is extruded out of the room by the continuous clean air, so the purposes of fresh air exchange and air purification are achieved. Meanwhile, the hollow shaft of the air transmission unit drives the eddy current air multiplication humidifier (2) to rotate, the rotation direction comprises two degrees of freedom, and therefore 360-degree air discharge without dead angles is achieved.

The invention discloses a heavy-load road waterproof coiled material. The material comprises a waterproof coiled material body, the waterproof coiled material body is composed of a wear-resistant material layer, a high-temperature-resistant material layer, a buffer material layer, a sound insulation material layer, a waterproof material layer and a self-adhesive layer, the bottom end of the waterproof material layer is connected with the self-adhesive layer in an adhesive mode, and the top end of the waterproof material layer is connected with the sound insulation material layer in an adhesivemode. The top end of the sound insulation material layer is connected with the buffer material layer in an adhesive mode, the abrasion resistance of the waterproof roll body is improved through the abrasion-resistant material layer composed of vulcanized rubber and natural rubber, and the situation that the waterproof roll body cannot be normally used due to serious abrasion in the using processis avoided; by arranging the high-temperature-resistant material layer composed of the inorganic zinc silicate high-temperature-resistant layer and the organic silicon high-temperature-resistant layer, the high-temperature-resistant performance of the waterproof coiled material body is improved, the phenomena of shrinkage deformation or wrinkling and the like of the waterproof coiled material in hot weather are avoided, the use performance of the waterproof coiled material body is guaranteed, and the adaptability to the high-temperature environment is good.

The invention discloses an air conditioner with fresh air exchange and purification functions, belongs to the field of household air conditioners, and aims at solving the problems existing in a way that an air conditioner and an indoor air purifier are adopted in a function integration mode to improve indoor air. The air conditioner with fresh air exchange and purification functions comprises an indoor unit and an outdoor unit, wherein the indoor unit is designed into a robot shape; a central control unit is arranged inside the head of a robot; indoor air index sensor groups are arranged in ears of the robot; two arms of the robot are turbo air multiplication humidifiers respectively; a humidification system water tank is arranged at the back of the trunk of the robot; an air transmission unit is arranged inside the chest of the trunk of the robot; a plate type heat exchanger is arranged at the lower part of the trunk of the robot; an axial flow compressor, a radiating fan, a compressor and a radiator are arranged in the inner cavity of a shell of the outdoor unit; the axial flow compressor sucks air from bottom to top; pressurized air enters the indoor unit; the temperature of the pressurized air is regulated by the plate type heat exchanger; then the pressurized air is transmitted to the two turbo air multiplication humidifiers by the air transmission unit; and rotation outlet air is formed.

The invention relates to the technical field of diesel generating sets, and discloses a low-noise generating set box which comprises a mute box body, and a main cabin body used for arranging an engineand a generator and an auxiliary cabin body used for arranging a radiator, a silencer and an inverter are arranged on the mute box body. The main cabin body is completely isolated from the outside except for being provided with an air filter air inlet channel used for being connected with an air filter on an engine. The diesel generating set has good heat dissipation performance and good noise isolation performance in a high-temperature environment.

A seal engagement left window frame of a glass window sash is characterized in that an inner seal medium and an inner installation medium are arranged on an inner edge of an inner hollow square pipe;an outer seal medium, a positioning rid and an outer installation medium are arranged on an inner edge of the outer hollow square pipe; the inner hollow square pipe and the outer hollow square pipe are mutually engaged with a first solid concave medium and a second solid concave medium; the first solid concave medium and the second solid concave medium have a good noise insulation effect; and theinner seal medium, the inner installation medium, the outer seal medium, the positioning rib, and the outer installation medium are engaged with corresponding components of the window sash so as to achieve a noise insulation effect. The beneficial effects of the invention are that the seal engagement left window frame of the glass window sash can avoid deformation and cracks and has a good noise insulation function.

The invention discloses a recording device capable of preventing noise in film and television projects. It includes a protective shell, a sound-proof cover assembly, a recording drive body, a leg support assembly and a hand-held rod assembly. A storage cavity is dug in the protective shell, and a recording drive body is slidably connected to the storage cavity. The recording drive body is used for Since the automatic recording piece automatically lifts and slides out of the storage cavity, it is convenient for timely maintenance and convenient use. The top of the protective shell is packaged with a sound insulation component, which is used to protect the recording drive body and play a certain sound insulation effect. Among them, The side of the protective case is provided with a leg support assembly for easy storage. The leg support assembly is convenient to keep the recording state in a fixed position to prevent noise. The bottom of the protective case is fixedly connected with a hand-held rod assembly.

The invention relates to an electric power engineering transformer electromechanical installation platform. The platform comprises a base used for placing a transformer and supporting columns locatedon the periphery of the base; the supporting columns are circumferentially distributed around the central axis of the base at equal angles; fixed pulleys are arranged at the top ends of the supportingcolumns and provided with connecting ropes in a striding mode; one end of each connecting ropes are connected with the base, and the other end of the connecting rope is connected with multiple balancing weights; locking pieces abutting against the connecting ropes are arranged on the supporting columns. With the above technical schemes adopted, the base and the transformer are lifted through thebalancing weights, the transformer is separated from the ground, the base and the transformer are in a dynamic balance state by adjusting the balancing weights, and the sliding friction force of the connecting ropes is reduced through the fixed pulleys. Compared with a mode of directly placing the transformer on the ground, the flexible connection mode greatly reduces vibration and noise, therebyfacilitating the improvement of the living comfort of surrounding dwellings. The locking pieces play a role in facilitating adjustment and installation.