30results about How to "Effective noise isolation" patented technology

The invention discloses a family sound isolation decoration board, which comprises a damp-proof material layer, a wood material base layer, a sound isolation material layer, a density board surface layer and a wear-resistance material layer, wherein the damp-proof material layer is arranged under the wood material base layer, the sound isolation material layer is arranged above the wood material base layer, the density board surface layer is arranged above the sound isolation material layer, the wear-resistance material layer is arranged above the density board surface layer, and the sound isolation material layer is formed by connecting a non-woven fabric layer and a fibrilia felt layer. Through adopting the mode, the family sound isolation decoration board has the advantages that the noise can be effectively isolated, the structure is simple, the cost is low, and practicability and safety are realized.

The invention provides a noise insulation box of a lathe. The noise insulation box comprises a box body for covering the lathe; a feeding opening and a discharging opening are respectively arranged at one group of opposite sides of the box body; an operation window which can be rotatably opened is arranged at an operation side; the box wall of the box body consists of an iron skin layer, a sponge layer, a corrugated paper layer, a noise insulation cotton layer, a corrugated paper layer, a sponge layer and an iron skin layer from inner side to outer side; the operation window comprises a window frame which is fixedly sealed on the box body; a window door is arranged inside the window frame; a hinge capable of enabling the window door to rotate around the hinge is arranged at the horizontal side of the window door; a rubber gasket is arranged around the window door; a locking buckle is arranged on the window door at the opposite side of the hinge; and a locking ring assorted with the locking buckle is arranged on the window frame. When the window door is closed, the locking buckle and the locking ring can be locked together. With the adoption of the noise insulation box provided by the invention, the noise volume of a workshop can be effectively reduced; and the working condition of the workshop is improved.

The invention relates to soundproof and insulation materials used in the filed of buildings such as a lift way, an equipment room, garage ceilings, karaoke bars and floor boards, and also relates to a soundproof and insulation layer comprising the material, and a preparation method and application thereof. The soundproof and insulation material comprises a sound-absorbing material main body and a surface coating layer, and the surface coating layer is arranged on the surface of the sound-absorbing material main body and integrated with the sound-absorbing material main body by using adhesives. The soundproof and insulation material can be used for effectively isolating various noises and absorbing various noises conducted through a wall body, the soundproof and insulation material also has a good insulation function, and the application scope is very wide.

The invention provides an elution and oxidative degradation integrated organic contaminated soil remediation device and method. The remediation device comprises a tank body and a top plate; the tank body is provided with an overflow port, a water outlet and a soil outlet; the top plate is provided with a hole duct for allowing a liquid feeding pipe to be guided in, one side of the liquid feeding pipe is connected with a liquid storage tank, and the other side of the liquid feeding pipe enters the tank body though the hole duct; the top plate is provided with a soil feeding inlet, and a soil screen is arranged below the soil feeding inlet; the top plate is provided with a stirring motor, the stirring motor is connected with a stirring shaft, and the stirring shaft is provided with stirringpaddles; and the bottom of the tank body is provided with an ultrasonic generator. According to the elution and oxidative degradation integrated organic contaminated soil remediation device and method, the elution efficiency of organic pollutants in soil is improved through the cavitation effect of ultrasonic waves, the organic pollutants are decomposed and absorbed into liquid phases, and meanwhile, the ultrasonic waves serve as an activation factor to active persulfate so that high-oxidbillity SO4- can be generated; and the organic pollutants entering the liquid phases are subjected to efficient oxidative degradation, and through the degradation effect of the ultrasonic waves, the purpose of effectively removing the pollutants in the soil is achieved.

The invention relates to a horizontal solid wood board slicing sawing machine, which comprises a stand, a hood, a dust collection device, a pipeline, conveying devices and a cutting device, wherein the hood is fixedly arranged at the upper end of the middle part of the stand; the conveying devices are transversely and coaxially arranged on the inner upper part of the stand; the cutting device is arranged on the hood and the stand between the conveying devices, is connected with a driving device, and is structured in a way that a plurality of blades are fixedly arranged in a cutter frame at an equal interval; a plurality of pressure rollers are arranged at intervals in the hood on the two sides of the cutting device; a dust hood is arranged at the top of the hood above the cutting device; the dust collection device is connected to and arranged at the upper end of the dust hood; the pipeline is connected to the dust collection device. The horizontal solid wood board slicing sawing machine is simple in structure, scientific in design, uniform in pressure and high in machining efficiency and machining accuracy, the smoothness of a product is improved, the labor intensity of a worker is effectively reduced, and the production efficiency is improved.

The invention discloses a road vibration isolation system for preventing underground spatial structure vibration and a construction method thereof. A steel spring floating plate is arranged between the roof of a building in an underground space and an asphalt pavement as a travelling pavement above the roof, through spring shear stiffness of spring vibration isolators and compression stiffness of flexible water stopping materials at left and right sides of the floating plate, floating plate vertical support and lateral support stiffness is formed, through a shear hinge and the flexible water stopping materials at front and rear ends of the floating plate, floating plate vertical deformation and smooth longitudinal stability without mutation are realized, and the flexible water stopping materials, kerb drainage ditches and longitudinal drainage ditches are arranged so that accumulation of rainwater in gaps between the floating plate and a slope surface layer is avoided and rainwater-caused corrosion damage to the spring vibration isolators is prevented. The road vibration isolation system can prevent road traffic-caused underground spatial structure vibration, has good vibration isolation effects, can reliably work in an outdoor environment for a long time and is convenient for construction.

The invention relates to a projection window structure for a movie theatre. The projection window structure comprises a wall body, a projection window and a protection cover, wherein the protection cover comprises a connecting part and a cover body part, the size of the connecting part is matched with the size of the projection window, the cross section of the cover body part is in a trapezoidal hollow structure, in addition, a sound isolation material layer is arranged on the inner wall of the cover body part, an annular clip is arranged on the inner wall at the narrow opening part of the cover body part, the diameter of the annular clip is slightly greater than a camera lens of a projection machine, and in addition, soft hair is fixedly arranged on an inner ring of the annular clip. The projection window structure has the advantages that projection light beams can reduce the light leakage in the spreading process, the influence of interference light generated by illuminating lamps on projection light rays in a projection room is also reduced, and the noise generated by a theatre hall and the projection room in the projection process can be effectively isolated.

The invention discloses a concrete vibration device. The concrete vibration device comprises a sound-proof shell which comprises an outer layer, a first sound-proof felt layer, a lightgage steel joistlayer, a second sound-proof felt layer and a gypsum board from outside to inside in sequence, a vibration opening is formed in the lower end of the sound-proof shell, a left cylinder and a right cylinder are arranged in the sound-proof shell, and first round holes are formed in the middles of the lower ends of the cylinders. Pistons are arranged in the cylinders, the lower ends of the pistons areconnected with piston rods, an air bag is fixedly installed in the sound-proof shell, and the air bag is communicated into the left and right cylinders. A plate vibrator is installed in the middle inthe sound-proof shell, the vibration output end on the lower side of the plate vibrator is fixedly provided with a vertical column, and the lower end of the vertical column is fixedly provided with apress plate. Oblique rods are arranged between the vertical column and the piston rods respectively, the middles of the oblique rods are hinged to the sound-proof shell, one end of each oblique rod is hinged to the vertical column, the other ends of the oblique rods are hinged to the lower ends of the piston rods, and an observation window is formed in the side wall of the sound-proof shell. Theconcrete vibration device is low in noise and small in shell vibration.

The invention discloses a noise-insulation dustproofing motor end cover. The noise-insulation dustproofing motor end cover comprises an end cover body, a first boss and a second boss are arranged on the left end face and the right end face of the end cover body, a sealing groove is formed in the outer wall of the first boss, and a sealing ring is arranged in the sealing groove, a first counter bore, a second counter bore, a third counter bore, a bearing seat hole and a shaft outlet hole are sequentially and concentrically arranged in the end cover body from left to right, the diameters of thefirst counter bore, the second counter bore, the third counter bore, the bearing seat hole and the shaft outlet hole decrease gradually, the right end face of the end cover body is concentrically provided with a fourth counter bore, a first sound insulation felt is arranged in the third counter bore in a clearance fit mode, a silica gel pad is arranged in the second counter bore in a clearance fitmode, a rubber pad is arranged in the first counter bore in a clearance fit mode, an annular groove is concentrically formed in the bottom surface of the first counter bore, the right end face of therubber pad is provided with a convex ring in interference fit with the annular groove, and a second sound insulation felt and a lip-shaped sealing ring are successively arranged in the fourth counterbore in a clearance fit mode from left to right. The noise can be effectively isolated, the noise pollution is reduced, and the dustproof performance is good.

The invention discloses a high sound absorption CMT reinforced polyurethane foam composite material for vehicles. The composite material structurally comprises a polyurethane foam composite layer anda CMT reinforced composite layer, wherein the polyurethane foam composite layer comprises a hydrophobic oil-repellent layer, a gas permeable and sound-absorbing adhesive layer and a polyurethane foamsound-absorbing layer; the CMT reinforced composite layer comprises a bonding layer, a reinforcing layer and a bonding layer. For the situation that the polyurethane foam composite material has a higher aperture ratio and poor mechanical properties and is usually taken as an interior material of roofs of the vehicles, a CMT material with the characteristics of high strength and high modulus is taken as a surface reinforcing layer, and the polyurethane foam composite layer and the CMT reinforced composite layer cooperatively act, so that the mechanical properties of the material are improved under the premise of ensuring high sound absorption, heat resistance and good dimensional stability of the material, and the material can be applied to automotive bottom protection.

The invention relates to a wall protection plate, in particular to a multi-layer composite wall protection plate. The multi-layer composite wall protection plate comprises a wall plate and further comprises a clamping plate and a correction plate, the wall plate is provided with a step groove, the clamping plate is matched with the step groove and is fixed to the wall plate through a fastener, a vertical plate is fixed to the clamping plate, a clamping block is fixed to the side face of the top of the vertical plate, the correction plate is provided with a sliding groove matched with the clamping block, a mounting plate is fixed into one side of the bottom of the wall plate, a first transverse plate is fixed to the side face of the mounting plate, a sliding rail is fixed to the position, above the first transverse plate, of the side face of the mounting plate, the sliding rail is slidably connected with a sliding block, the sliding block is fixed to a second transverse plate, a springis connected between the first transverse plate and the second transverse plate, limiting blocks are fixed to the bottom of the first transverse plate and the top of the second transverse plate correspondingly, and an accommodating cavity matched with the first transverse plate and the second transverse plate is formed in the other side of the bottom of the wall plate. According to the technical scheme, the defects that in the prior art, the flame retardant performance and the heat insulation performance are poor, and the mounting efficiency is low can be effectively overcome.

The invention discloses a three-dimensional noise reduction integrated stove, and relates to the field of integrated stoves. At present, in order to improve the smoke suction effect, an integrated stove generally adopts a fan with large air volume, the noise of the fan is large, and a poor experience feeling is brought about to consumers. The three-dimensional noise reduction integrated stove comprises a volute, an impeller arranged in the volute and a motor used for driving the impeller. The volute comprises a volute front plate, a volute rear plate and a volute side plate arranged between the volute front plate and the volute rear plate. The inner side contour line of the volute side plate forms a volute molded line, a plurality of first through holes are formed in the volute side plate, and a first sound absorption layer opposite to the first through holes is arranged on the periphery of the volute side plate. An air inlet is formed in the volute rear plate. The distances between the adjacent first through holes are larger than or equal to two kinds, and thus multiple through hole rates of the volute side plate are formed. Moreover, the noise reduction assembly forms a semi-encirclement ring, and noise reduction treatment is conducted on the three side walls except the rear side wall of a fan box. And the fan assembly is enveloped in multiple directions, so that the noise of the fan assembly is effectively reduced.

The invention relates to the technical field of building materials, and in particular, relates to a nanoscale sound insulation glass material and a preparation method thereof, wherein the nanoscale sound insulation glass material comprises the following raw materials: nano silicon dioxide, a Fe-BTC-TiO nano material, aluminum hydroxide, calcium oxide, zinc oxide, sound insulation particles, medical stone, vermiculite powder, anhydrous sodium carbonate, an ultraviolet light absorber, a cosolvent, a defoaming agent and a flatting agent. The nanoscale sound insulation glass material is high in strength, good in sound insulation effect and capable of effectively preventing noise pollution, the adopted raw materials are all existing low-cost materials in the market, the manufacturing cost is low, and the preparation process is simple and easy to operate; the sound insulation particles are added into the raw materials and mixed with other materials, and then various materials are jointly added into a kiln, so that the dispersion uniformity of the sound insulation particles in the glass can be effectively improved, the sound insulation effect of the glass is further improved, and the glass has good sound insulation performance and obvious sound insulation effect.

The invention provides a diesel generator noise reduction outer shell, which comprises a ceramic layer, an acrylic fiber layer and a plastic layer, wherein the ceramic layer is attached to one surfaceof the acrylic fiber layer, the plastic layer is attached to the other surface of the acrylic fiber layer, and the ceramic layer, the acrylic fiber layer and the plastic layer are integrally adhered.According to the present invention, through the combined design of the material, the material with significant noise reduction effect is obtained by optimizing the structure based on the combinationof the respective characteristics of ceramics, acrylic fibers and plastics, and the diesel generator outer shell prepared from the material can effectively isolate noise and reduce the noise pollutionduring the use; and the outstanding technical effect is achieved through the creative technical idea, and the advantages of low cost, easy realization and great industrialization potential are achieved.