34results about How to "Noise reduction function" patented technology

A low-noise humanoid robot head system comprises a neck action drive component, a lower jaw action drive component, a plurality of drive ropes and an action drive system. According to the human structural position, the lower jaw action drive component is arranged above the neck drive component; and the action control system is connected with and controls the neck action drive component and the lower jaw action drive component through corresponding drive ropes. The system has the motion of four degrees of freedom, i.e. the neck motion of three degrees of freedom and mouth motion of one degree of freedom. The motion noise of the system does not exceed 30dB(A).

The invention provides a high-carbon and environment-friendly friction material for automobiles and a preparation method of the high-carbon and environment-friendly friction material, belongs to the field of friction composite material preparation, and relates to a friction material. Composition of steel cotton fiber and zinc powder is used for replacing copper to achieve functions of copper in the original formula, and is synergistic with modified resin, aramid fiber, synthetic graphite, mica and other raw materials, and stability of the friction material is improved, and environment pollution due to heavy metal copper entering the environment along with friction dust is prevented. Defects of replacement of copper with zinc are complemented by addition of the steel cotton fiber, the composition of the steel cotton fiber and the zinc powder plays a role similar to that of copper in the material, and accordingly, by addition of the steel cotton fiber, performance of the high-carbon material is more superior, and braking performance is more stable.

The invention discloses a multifunctional diatom mud putty powder for indoor use. Its components include: Maya blue, ultrafine diatom mud, nano titanium dioxide, silver ionic liquid, ultrafine volcanic stone powder, ultrafine perlite powder, ultrafine Ground calcium carbonate, hydroxypropyl methylcellulose, acrylates, glycol, cellulose thickener, wetting and dispersing agent. The invention also discloses a preparation method of the indoor multifunctional diatom mud putty powder. The raw materials used in the present invention are all environmentally friendly, non-toxic and non-polluting materials. By combining Maya blue, nano-titanium dioxide and diatom mud, silver ionic liquid and nano-titanium dioxide are used in conjunction with each other, ultra-fine diatom mud, ultra-fine volcanic stone powder and The combination of superfine perlite powder and the like enables the present invention to have multiple functions such as anti-formaldehyde, antibacterial, water and moisture resistance, heat insulation, fire retardant, sound insulation and anti-noise.

The invention relates to a greening guardrail pier capable of cultivating planets and a manufacture method of the greening guardrail pier. The greening guardrail pier mainly consists of a pier body and a cultivating groove. The greening guardrail pier and the manufacture method are characterized in that the cultivating groove is arranged on the pier body, the cultivating groove is internally provided with a water outlet pipe, and the lower end of the water outlet pipe is opened at the bottom of the pier body. The greening guardrail pier can be in cooperation with an existing fence guardrail, and is arranged in the middle of a road to separate a backward lane from a forward lane, or to separate a motor way, a bicycle lane from a sidewalk, and flowers and plants can be cultivated in the guardrail pier, so that the environment can be beautified, the halation caused by the joined lamplight of vehicles in the night can be further avoided, and the vehicle running safety can be improved.

The invention discloses multifunctional environmentally-friendly water-based paint. The multifunctional environmentally-friendly water-based paint comprises main materials, additives and deionized water, wherein the main materials include diatom ooze, maya blue, tourmaline, nanometer titania, ultra-fine aluminum silicate, sepiolite, silicon carbide and zinc fluosilicate; the additives include acrylate polymer emulsion, silver ion solution, fluoro-silicone emulsion, wetting dispersant, preservative, polyvinyl alcohol, a thickener, hydroxypropyl methyl cellulose, a buffering agent, a defoaming agent, an anticracking agent and inorganic pigment. The invention also discloses a preparation method of the multifunctional environmentally-friendly water-based paint. According to the multifunctional environmentally-friendly water-based paint, the raw materials are environmentally-friendly, nontoxic and pollution-free materials; maya blue, nanometer titania and diatom ooze are used in match to enable efficient function of resisting formaldehyde, ammonia and benzene; the silver ion solution and nanometer titania are used in match to enable effective antibacterial effect and long-lasting antibacterial effect; tourmaline and silicon carbide are added, so that the functions of health care, smell removing and fireproofing are realized.

The invention provides a plenum chamber with the purification function, the disinfection function and the sound absorption function. The plenum chamber comprises a plenum chamber body, a purification and disinfection device and sound absorption materials, wherein the plenum chamber body is a cuboid, any one side of the plenum chamber body can be connected with an air duct as needed, the mode of connection between the plenum chamber body and the air duct is the same as the mode of connection between a common air supply and discharge plenum chamber and the air duct, the purification and disinfection device is firmly installed in the plenum chamber body and between an air inlet and an air outlet, and the sound absorption materials are evenly attached to the outer wall of the plenum chamber body. The plenum chamber with the purification function, the disinfection function and the sound absorption function has the advantages that the plenum chamber with the purification function, the disinfection function and the sound absorption function is used for replacing the section with the purification function, the section with the disinfection function and the section with the sound absorption function in a combined air treatment unit, the length of the combined air treatment unit is reduced, the height of a machine room is sufficiently used, and the purification and disinfection device and the sound absorption materials are reasonably combined and arranged in the plenum chamber body. When the plenum chamber with the purification function, the disinfection function and the sound absorption function is applied, the size of the combined air treatment unit can be reduced, and the airflow stabilizing function, the sound absorption and noise reduction function, the disinfection function and the air purification function are achieved.

The invention belongs to the technical field of water pumps, and particularly relates to a water pump with a noise reduction function. The water pump comprises a mounting plate, a rubber pad is fixedly arranged at the top of the mounting plate, the top of the rubber pad is movably connected with a base, the water pump is welded to the top of the base, the input end of the water pump is electrically connected with an alternating current circuit, a supporting rod is fixedly connected to one side of the top of the mounting plate, the top of the supporting rod is fixedly provided with a movable shaft, the outer part of the movable shaft is fixedly connected with a pressing plate in a sleeved mode, the bottom of the pressing plate is movably connected with the top of the base, a through grooveis formed in the pressing plate, and a fixing pin is movably sleeved in the through groove. The water pump with the noise reduction function is characterized in that the mounting plate, a movable spring and a mounting frame are arranged, buffering and damping effect on the water pump is realized during the working process of the water pump, so that the problem of collision between the water pump and the mounting plate is avoided, the noise reduction function is achieved for the water pump, and the working environment around the water pump is protected.

A fluid distributor body and an associated sanitary shower device containing the fluid distributor body have a cylindrical boundary forming a fluid inlet on an axial input side, and a distributor structure disposed downstream of the fluid inlet for fluid distributing flow conductance of a fluid supplied via the fluid inlet. The distributor structure is provided by at least one perforated distributor plate held on the boundary and having a plurality of passage openings conically tapering in the flow direction. The fluid distributor body and sanitary shower device are useful for sanitary overhead showers, for example.

The invention discloses a multifunctional guardrail capable of adsorbing and treating PM2.5 haze. The multifunctional guardrail capable of adsorbing and treating the PM2.5 haze comprises a guardrail bracket shell. An air inlet cavity, a purifying cavity, an air exhaust cavity, a purifying cavity and an air inlet cavity are formed in the guardrail bracket shell from right to left, an air inlet fanis arranged in the air inlet cavity, and an air inlet corresponding to the inlet end of the air inlet fan is arranged on the front end surface of the guardrail bracket shell; and an air exhaust fan isinstalled in the air exhaust cavity, an air exhaust opening corresponding to the outlet end of the air exhaust fan is formed in the rear end surface of the guardrail bracket shell, the air inlet endof the purifying cavity communicates with the air inlet cavity, the air outlet end of the purifying cavity communicates with the air exhaust cavity, and a purifying filtering device for purifying thepolluted air is installed in the purifying cavity. The multifunctional guardrail capable of adsorbing and treating the PM2.5 haze has all the functions of an ordinary guardrail, has the ability to prevent and treat the PM2.5 haze, and has wide application range, and is further applicable to air pollution of industrial and mining enterprises.

The invention relates to a modified zeolite powder inorganic environment-friendly building coating and a preparation method thereof. The modified zeolite powder inorganic environment-friendly building coating comprises the following components in percentage by weight: 15%-20% of light calcined magnesia powder, 5%-10% of magnesium sulfate heptahydrate, 35%-45% of modified zeolite powder, 20%-25% of water, 10%-15% of heavy calcium carbonate, 0.5%-1.0% of an additive, 0.3%-0.5% of fibers, 0.3%-0.5% of hydroxypropyl methyl cellulose and 0.3%-0.5% of redispersible rubber powder. The modified zeolite powder and the low-quality light calcined magnesia are adopted as main raw materials to prepare the inorganic environment-friendly building coating, a base material is an inorganic cementing material, and the inorganic environment-friendly building coating does not contain an organic solvent, does not contain formaldehyde, does not mildew and does not pollute the environment and has the advantages of being good in construction performance, high in bonding strength, fireproof, capable of adsorbing formaldehyde and capable of adjusting indoor humidity.

The invention discloses a bridge expansion joint dustproof seepage-proof adhesive which comprises a modified asphalt cement, a base cloth, a high-temperature-resistant polyethylene (PE) film and a high-temperature-resistant PET silicone oil film, the modified asphalt cement is dip-dyed on the base cloth, the high-temperature-resistant polyethylene film is located on the lower surface of the base cloth, and the high-temperature-resistant silicone oil film is located on the upper surface of the base cloth. The modified asphalt cementing material is prepared from the following raw materials in parts by weight: 50 to 60 parts of matrix asphalt, 4 to 10 parts of SBS (Styrene Butadiene Styrene), 15 to 25 parts of rubber powder, 2 to 5 parts of petroleum resin, 13 to 18 parts of extract oil and 0.05 to 0.15 part of stabilizer, the rubber powder is 20-40-mesh desulfurized rubber powder, the stabilizer is a sulfur-containing stabilizer, the extract oil is furfural extract oil, and the petroleum resin is C9 petroleum resin.

The invention belongs to the field of building materials, and particularly relates to a wall-sprayed building material and an application method thereof. The wall-sprayed building material is prepared from the following materials in parts by weight: 25 parts of lead-zinc iron tailings micro powder or steel slag, 20 parts of cement, 20 parts of polyphenyl granule or vitrified beads, 20 parts of industrial waste lye, 10 parts of activated Al2O3 and 5 parts of crystal nuclein. According to the wall-sprayed building material and the application method thereof, a green building material with thermal insulation, fire protection, moisture absorption and noise reduction is prepared by raw material selection and proportion determination and is applied to a wall building, the production process is green and environmental-friendly, the production line occupies less land, loading, producing and packaging are all automatically controlled, employed people are less, production efficiency is high, a prepared wall structure has the performances such as integrality, shock resistance, crack resistance, sound insulation, flexibility and the like which current wall materials like building blocks, ribbon boards and the like do not have, and the wall-sprayed building material belongs to a multi-functional composite integrated wall material.

The invention provides shower door assembly having frame reinforcing and noise reducing functions. The shower door assembly comprises: a first frame and a second frame sleeved outside the first frame; the first frame comprises a bottom wall and two parallel side walls extending from the bottom wall, and the bottom wall and the two parallel side wall together define a first hollow cavity with an opening; the second frame comprises a bottom wall and two parallel side walls extending from the bottom wall, and the bottom wall and the two parallel side wall together define a second hollow cavity with an opening; the opening of the first hollow cavity faces the opening of the second hollow cavity; and the shower door assembly further comprises at least one connecting element, the connecting elements are elastic, and the dimension of each connecting element in at least one direction is greater than the distance of the two side walls of the first frame. The elastic connecting elements can enable the two side walls of the first frame to expand outward under the action of elastic forces, so the two side walls of the first fame abut against the two side walls of the second frame, and then fixation and noise reduction are achieved.

The invention relates to the technical field of ball mills, and discloses ball mill equipment with classification treatment and noise reduction functions. The lower part of a pushing block is movablyconnected with a bottom plate, the front end of the bottom plate is movably connected with a rotating roller, and the bottom of the rotating roller is movably connected with a mounting seat. Accordingto the ball mill equipment with the classification treatment and noise reduction functions, an axis seat is electrified to start rotating, acts on materials and drives a rotating disc to synchronously operate, the rotating disc rotates to act on a supporting rod to move downwards, the pushing block moves downwards along with the supporting rod, the pushing block pushes the rotating roller to rotate, the rotating roller rotates at a constant speed to enable the internal materials with the specifications reaching the standard to flow out downwards and directly fall into a base, ventilation holes are used for ventilating, a certain length allowance can be formed when the rotating roller rotates, the materials with different specifications are treated and ground again, so that the classification treatment effect is achieved, the uniformity is improved, and the working efficiency and quality are improved.