31results about How to "With sound-absorbing function" patented technology

The invention relates to a magnesium silicate fiber blanket belonging to the technical field of fire-proof heat preservation and insulation materials. The magnesium silicate fiber blanket is characterized by comprising the following materials with oxides in percentage by weight: 40%-85% of SiO2, 3%-40% of MgO, 2%-30% of CaO, and the balance of one or the any combination of B2O3, Al2O3, Fe2O3, Na2O and K2O, wherein the total amount of the SiO2, the MgO and the CaO is more than or equal to 85%. The magnesium silicate fiber blanket is processed through the procedures of material melt, centrifugal thread throwing or blowing fiber forming, cotton collection, pinprick, heat treatment, cutting, and the like. The magnesium silicate fiber blanket has functions of non-inflammation, heat insulation, sound absorption and fire prevention and is a fire-resistant heat-preserving heat-insulating fire-proof material which is widely suitable for various heat engineering equipment and pipelines.

The invention relates to a grain collecting vehicle and an operation method thereof, and belongs to the technical field of agricultural mechanical equipment. The equipment comprises a grain separationmechanism arranged on a vehicle chassis, the grain separation mechanism comprises a separation bin, and the lower portion of the grain separation mechanism is connected with a grain pushing mechanismused for pushing grain to one side; the grain pushing mechanism is connected with a grain storing bin, and a closed space is formed among the separation bin, the grain pushing mechanism and the grainstoring bin; and a sealing plate for isolating the separation bin and the grain pushing mechanism is hinged to the inner wall of the lower portion of the separation bin, the upper portion of the sealing plate is provided with a limiting plate, and a stretching spring is mounted between the limiting plate and the sealing plate in a corresponding mode. The grain collecting vehicle solves the problem that in the prior art, grain particles are pressed and damaged by blades of an air-closing device, the particle integrity degree in the food processing process is advantageously ensured, and the situation that the grain in the whole grain storing device is affected due to rapid metamorphism after a part of grain is pressed and damaged is avoided.

The invention provides a PIR foamed cement laminboard for construction. The laminboard comprises a decorative sheet, an acoustical board, a PIR damping sheet and a base board which are sequentially pressed together and bonded through an adhesive, wherein a water-proof coating is arranged between the decorative sheet and the acoustical board, the decorative sheet is a high-strength abrasion resistant composite board, and the lower surface of the base board is rough. The laminboard has a sound absorption function, transmission of vibration can be blocked effectively, and environmental noise pollution is reduced; and the laminboard is firmly connected with the ground after arrangement, and has the advantages of being high in intensity, attractive in appearance, durable, waterproof and moisture-proof.

The invention relates to a composite type brick. The composite type brick comprises a brick body which comprises a base layer and an elastic layer connected with the base layer. According to the composite type brick, the strength of the brick body is ensured through the base layer, elasticity of the brick body is ensured through the elastic layer, the brick is not easy to fracture in the laying process, people can move comfortably on the brick, the good protecting effect can be achieved, and sports health is facilitated; weather-proof performance is better, abrasion resistance is higher, the service life is longer, the strength of a surface layer and the elasticity are adjustable, and personalized products can be provided according to different place demands; and the elastic layer has thesound absorption function, and a floor laid by using the brick has the good mute effect.

The invention relates to an automobile engine compartment internal fuel pump cover and a manufacturing method thereof. The cover is matched with a fuel pump in shape. The cover is characterized in that the fuel pump cover is of a double-layer structure, the outer layer is a hard crust, the inner layer comprises an inner surface layer of a soft crust and a middle layer which is between and connectsthe outer layer and the inner surface layer, and two-step molding is carried out through two molds. Compared with the prior art, the outer layer hard crust has the sound insulation property, the inner layer has the sound absorption function, and meanwhile has the characteristics of high temperature resistance, aging resistance and flame retardancy, and the fuel pump cover can achieve the effect of reducing noise.

The invention discloses an aluminum plate device with a sound absorbing function. The aluminum plate device comprises an upper aluminum plate layer, a supporting aluminum plate and a foundation aluminum plate. The upper aluminum plate layer is arranged at the top end of the foundation aluminum plate. The upper aluminum plate layer is connected with the foundation aluminum plate through the supporting aluminum plate. The position between the upper aluminum plate layer and the supporting aluminum plate is filled with sound absorbing cotton, and the part between the foundation aluminum plate andthe supporting aluminum plate is filled with sound absorbing cotton. An antiskid layer is further arranged on the outer side of the upper aluminum plate layer. The antiskid layer is connected with theupper aluminum plate layer in a sticking manner. A fixed connector is arranged at the bottom end of the foundation aluminum plate, and one end of the fixed connector is connected with the bottom faceof the foundation aluminum plate. By means of the aluminum plate device with the sound absorbing function, many improvements are added on the design of sound absorbing, an aluminum plate can have a sound absorbing function, and therefore the noise problem is effectively solved; the aluminum plate device has a waterproof function, and the service life of the aluminum plate can be effectively prolonged; installation is convenient, and the installation efficiency of the aluminum plate can be effectively improved; and the aluminum plate device is simple in structure, convenient to use, capable offacilitating later-period repairing or maintaining, easy to manufacture and easy to popularize.

The invention discloses a blanket fabric comprising a fabric body. The fabric body is divided into three layers, the internal layer is made of pure cotton, the external layer is woven by using cotton and silk, the layer between the internal layer and the external layer is made of wool, the periphery of the fabric body is provided with a lace, and the periphery of the lace is provided with a cloth strip. The blanket fabric is suitably used as a carpet and a bedding in domestic life, has good warming performance, longer service life and an attractive shape and has the function of sound absorption; the production process and the manufacture method are simple, and the labor intensity of workers is relieved; and the blanket fabric is a novel healthful environment-friendly fabric so as to be beneficially popularized and used.

The invention provides a building assembly type steel structure building external hanging formwork which comprises a first wallboard. A reinforcing frame is fixed to one side of the first wallboard, asecond wallboard is fixed to the side, away from the first wallboard, of the reinforcing frame, and connecting grooves are formed in the two sides, away from the reinforcing frame, of the first wallboard and the second wallboard, wherein splicing plates are arranged in the connecting grooves. According to the building assembly type steel structure building external hanging formwork, when concreteis poured, a vibrating bar penetrates through vibrating bar inserting holes and a communicating opening to enter the position between the first wallboard and the second wallboard, then the position between the first wallboard and the second wallboard is filled with the concrete, meanwhile, the vibrating bar vibrates, and the vibrating bar drives the concrete to flow, so that the concrete is compactly combined; and through the multiple vibrating bar inserting holes, the vibrating bar can be inserted between the first wallboard and the second wallboard of different layers, bubbles between the concrete are discharged, and the strength of the concrete can be effectively improved.

The invention provides a noise-reduction and fire-resistant brick and a preparation method thereof. The noise-reduction and fire-resistant brick is prepared from the following raw materials in parts by mass: 50 to 60 parts of electrically melted magnesia granules, 5 to 15 parts of andalusite powder, 10 to 20 parts of white carbon black, 2 to 6 parts of phenolic resin and 0.69 to 1.275 parts of noise-reduction agent. The noise-reduction and fire-resistant brick provided by the invention has long service cycle and noise-reduction function; the raw materials cost is low, the prepared noise-reduction and fire-resistant brick has excellent heat-resistant performance and heat shock stabling performance; the preparation process is simple, the operation period is short and the production efficiency is high.

The invention belongs to the technical field of valves, and relates to a silencing micro-resistance slow-closing butterfly check valve. The check valve comprises a check valve body, the two sides of the check valve body are fixedly connected with a first flange plate and a second flange plate, one side of the second flange plate is fixedly connected with a protrusion, and the outer surface of the protrusion is in threaded connection with a connecting pipe. The silencing micro-resistance slow-closing butterfly check valve has the beneficial effects that a first interlayer and a second interlayer are arranged, the interlayers have the sound absorption function, and noise of the check valve and a connecting pipe can be isolated; impurities in water can be filtered through arrangement of a filtering plate, and the situation that the impurities damage the check valve is avoided; through arrangement of a fixing block, a third flange plate, a third threaded hole, a threaded column and a threaded cap, the second flange plate and the connecting pipe can be fixed; and through arrangement of a third bolt and a connecting plate, the filtering plate can be replaced and cleaned.

The invention belongs to the field of sound insulation equipment, and particularly relates to a light double-layer structure sound barrier and a preparation method, the light double-layer structure sound barrier comprises a middle frame, a first hole, a second hole, a first bolt, a second bolt and a barrier unit; first holes are symmetrically formed in the middle frame; second holes are symmetrically formed in the middle frame; the first acoustic board, the second acoustic board, the third acoustic board and the fourth acoustic board are made of acoustic blankets, the two faces of the first board and the two faces of the second board have the acoustic absorption function, the acoustic insulation function can be achieved through the first board and the second board which are made of metal, and the first board and the second board are provided with the first through hole and the second through hole, so that the sound insulation function is achieved. The first plate and the second plate are rotationally connected to the two sides of the middle frame, the first bolt and the second bolt can be loosened to change the angle of the first plate and the angle of the second plate, and therefore the sound insulation device can adapt to different sound insulation areas and angles, and the optimal sound insulation and absorption effect is achieved.

The invention discloses a vibration-absorbing and noise-absorbing light engine suspension. The suspension comprises a housing and an inner core located in the housing, the inner core at least comprises an upper plate body and a lower plate body which are oppositely arranged, the upper and lower plate bodies are connected with an inner top face and an inner bottom face of the housing respectively,the upper plate body comprises a first layer plate, a first interlayer and a second layer plate which are sequentially connected from top to bottom, the first interlayer plate is beehive-shaped, the longitudinal cross section of the first interlayer plate is formed by the sequential connection of multiple rows of regular hexagons, a circle which is connected with three diagonal lines of the regular hexagon is arranged in each regular hexagon, and the diameters of the circles in the hexagons in each layer are gradually increased from top to bottom. The suspension has the advantages that when anengine is in an idle state and the vibration amplitude is larger, vibration generated by the engine is absorbed by the upper plate body by generating larger damping effect, and a gradient vibration absorbing function is achieved; the problem that traditional rubber can only provide a smaller damping effect is solved, and a better vibration reduction effect is achieved.

The invention discloses a movable shutter with a sound absorption function. The movable shutter comprises a fixed frame, a plurality of blades hinged into the fixed frame, a movable frame arranged in the fixed frame and blade connecting rods respectively hinged with the blades and the movable frame, and each blade comprises a blade shell and a sound absorption material arranged in the blade shell. The movable shutter has the beneficial effects that the sound absorption materials are arranged in the blades, so that the blades have a sound absorption function, noise transmitted from the interior of a locomotive to the outside can be reduced, and noise pollution to the environment outside the locomotive is reduced.

The invention discloses a decorative ceramic composite board having sound absorption function, which includes a base layer, a sound absorption layer and a decorative layer. The sound absorption layer is provided with honeycomb-like sound absorption holes. A plurality of long slots are disposed in each sound absorption hole. Two free ends of each long slot are both arc-shaped. Two symmetrical sound insulation parts are arranged in each long slot and are protruded from the bottom surface of the sound absorption hole. The two sound insulation parts divides the long slot into three parts: a first sound absorption slot hole, a second sound absorption slot hole and a third sound absorption slot hole, wherein the second sound absorption slot hole is located between the first and the third sound absorption slot holes and the first and the third sound absorption slot holes are located symmetrically relative to the second sound absorption slot hole. One side of each of the two sound insulation parts is inclined surface. The two inclined surfaces are respectively closed to the first and the second sound absorption slot holes. The sound absorption structure can attenuate sound sources in low-frequency band and high-frequency band, so that the board has good environmental noise reducing function.