21results about How to "Noise isolation" patented technology

The utility model relates to a mute test box, comprising a test box body which is internally provided with a separator plate which divides the interior of the test box body into a first cavity and a second cavity; one side edge of the test box door plate is hinged to the test box body through a hinge, the test box door plate covers the doorway position of the test box body, and the test box door plate and the test box body are locked together through a locking assembly; the motor is installed in the first cavity, a rotating shaft of the motor penetrates through the partition plate and extends into the second cavity, the end, extending into the second cavity, of the rotating shaft of the motor is connected with a transmission shaft, the transmission shaft is connected to the testing tool, the transmission shaft is sleeved with a silencing part, and the space between the silencing part and the transmission shaft is filled with a silencing material layer. According to the mute test box, the stability during testing can be improved, the problem that an existing mute test box is not ideal in noise reduction effect is solved, and the mute test box has good sound insulation performance and sound insulation effect, so that the accuracy of a test result can be effectively improved.

The utility model relates to a concave sound insulation groove floor heating module which comprises a base, a heat conduction layer is arranged on the upper side of the base, a sound insulation and heat preservation layer is arranged at the bottom of the heat conduction layer, grooves are formed in the heat conduction layer at intervals, floor heating pipes are arranged in the middles of the grooves, and inner grooves are symmetrically formed in the grooves. A stop block is movably arranged in the inner groove, and a stop spring is connected between the end, away from the floor heating pipe, of the stop block and the inner groove. The device has the advantages of efficient heat conduction, excellent sound insulation and heat preservation, convenient installation and maintenance, reliable anti-falling performance and the like, and the performance and reliability of a floor heating system are jointly improved.

This utility model discloses a bottom structure for a dishwasher and the dishwasher itself. The bottom structure is adapted to be arranged on the lower side of the inner tub. The bottom structure includes a base, a flow guide, and a sound insulation plate. A hinge seat is provided on the base. At least a portion of the flow guide is located on the upper side of the base. The sound insulation plate is located on the upper side of the base and is connected to at least one of the flow guide and the hinge seat. According to the bottom structure of the dishwasher of this utility model, by setting a sound insulation plate that cooperates with the flow guide, the noise generated by the water flow impacting the bottom of the inner tub and the motor pump is effectively isolated, making the dishwasher quieter during operation and reducing the impact of operating noise on the user. The sound insulation plate is connected to the flow guide and / or the hinge seat, realizing the integrated design of the sound insulation plate, the flow guide, and / or the hinge seat, which facilitates modular assembly, improves production assembly efficiency, and has a compact overall structure and small space volume.

The utility model relates to the technical field of composite boards, in particular to a multi-layer composite insulating board which comprises a board body, the board body comprises two insulating layers, two connecting layers and a base layer, a vacuum cavity is formed in the base layer and has a sound insulation function, and a plurality of reinforcing boards are evenly arranged in the vacuum cavity and have a sound insulation function. A triangular columnar cavity is formed between every two adjacent reinforcing plates, stability is achieved, the structural strength of the plate body is enhanced, the service life of the plate body is prolonged, the insulating layers are fixedly installed on the two sides of the base layer through the connecting layers, and the insulating layers are made of asbestos materials and have good insulating performance. The surface layer made of rubber is adhered to the side, away from the connecting layer, of the insulating layer, the rubber has an insulating effect, the insulating performance of the plate body is enhanced, the four corners of the insulating layer, the connecting layer and the base layer are fixedly connected through screws, further reinforcement is achieved, it is guaranteed that all the layers are connected tightly, and falling and falling apart are prevented.

The utility model discloses a double-layer shell high-strength corrosion-resistant valve which comprises a valve body, a valve shell is arranged outside the valve body, a valve element is arranged in the valve shell, and the two ends of the valve shell are fixedly connected with pipelines communicated with the valve shell. The two pipelines are slidably connected with protective shells matched with the valve shell in a sleeving mode, the opposite ends of the two protective shells are open, sound insulation cotton is fixedly connected to the inner walls of the protective shells, and the two pipelines are fixedly connected with fixing plates in a sleeving mode. The valve is reasonable in structure, the protective shell is arranged outside the valve shell, noise generated when the valve body works can be effectively isolated through the sound insulation cotton arranged in the protective shell, the mute effect of the valve body can be greatly improved, meanwhile, the valve shell can be protected, and the service life of the valve body is prolonged. And external collision and dust pollution are avoided.

This invention relates to a fan frame noise reduction structure, comprising a frame having a top and a bottom, and an airflow channel in the middle of the frame extending from the top to the bottom. The airflow channel forms an air inlet and an air outlet at the top and bottom, respectively. A noise reduction zone is provided between the airflow channel and an outer edge of the frame in at least one area of ​​the frame. At least one noise reduction unit is provided on the noise reduction zone, located between the top and the bottom and not connected to the airflow channel. The at least one noise reduction unit has a cavity that is sealed between the top and the bottom and does not extend through the top and bottom, thereby isolating airflow noise and absorbing frame vibration and its noise.

The utility model discloses centrifugal preparation equipment, and relates to the technical field of preparation equipment. The centrifugal preparation equipment comprises a supporting frame, a separation barrel is fixedly connected to the interior of the supporting frame, and a sealing cover is arranged on the separation barrel; a supporting ring is fixedly connected to the interior of the separation cylinder, and a separation inner container is rotationally connected to the interior of the supporting ring; a first discharging pipe is fixedly connected to the supporting frame, a second discharging pipe is rotationally connected to the bottom of the separating cylinder, and the second discharging pipe and the separating inner container are fixedly connected and communicate with each other; and a buffer mechanism is arranged on the inner wall of the separation cylinder. According to the centrifugal separation equipment, a buffer pad shrinks, a buffer plate is stressed, meanwhile, a buffer rod slides towards the interior of a buffer groove, a buffer spring is extruded, and therefore impact force is buffered through the elasticity of the buffer spring, and the situation that ores are directly thrown out to impact the interior of a separation barrel is avoided; meanwhile, noise is prevented from being generated in the separation process, so that the service life of equipment is prolonged.

This application discloses a thermally broken aluminum alloy casement window, belonging to the field of doors and windows. It includes an outer frame, an inner frame installed inside the outer frame via a thermally broken strip, a side frame mounted on the inner wall of the inner frame via two hinges, a sash frame fixedly installed on one side of the side frame, and a glass assembly installed inside the sash frame. Both the inner frame and the sash frame are equipped with Helmholtz resonators. The sound insulation layer filled inside the sash frame effectively isolates external noise and reduces the impact of internal noise. At the same time, some sound energy can be absorbed by the outer tempered glass and the intermediate PVB film, while the air layer of the inner double-glazed glass can further block the transmission of sound waves. Furthermore, the Helmholtz resonator can be used to specifically absorb noise of a certain frequency.

This utility model relates to the technical field of reinforced plastic steel door and window structures, and discloses a corner reinforcement structure for plastic steel doors and windows, including a base plate, which is inserted into and fitted with side plates. A fixing block is provided at the junction of the side plates, and a limiting rod is provided inside the fixing block. A spring is sleeved on the outside of the limiting rod. The limiting rod is rotatably connected to a pressure block, and the pressure block is fixedly connected to a fixing plate. A double-sided sealing gasket is provided on one side of the fixing plate. The double-sided sealing gasket is made of a highly elastic and weather-resistant material, which can tightly fit the gaps of the door and window frame, effectively isolating external wind, rain, dust and noise, and improving the comfort of the living environment.

The utility model relates to the technical field of spherical sunlight rooms, in particular to a door of a spherical sunlight room, which comprises a spherical sunlight room main body, a honeycomb frame is fixedly mounted on the upper side of the spherical sunlight room main body, a glass window is fixedly arranged on one side of the honeycomb frame, and two arc grooves are symmetrically arranged at two ends of the spherical sunlight room main body. According to the anti-theft door disclosed by the utility model, rainwater can be better intercepted by enabling the glass baffle plate which is adjusted by rotating downwards, so that the situation that the rainwater is in contact with the door is reduced, and the door can be protected; and then the glass baffle can further adjust the rain shielding angle to improve the rain shielding effect of the room door, the overall service life of the spherical sunlight room is prolonged, and a U-shaped rubber strip on the first glass door can be embedded into a U-shaped groove in the room door, so that the U-shaped rubber strip can play a role in sealing and heat preservation.

This utility model provides a noise reduction structure for an air conditioning ventilation system, belonging to the field of air conditioning system noise reduction technology. It includes a ventilation duct with sound-insulating cotton installed inside, and a filter assembly at the front end of the ventilation duct. The filter assembly includes a fixed frame, which is fixedly installed inside the ventilation duct. The sound-insulating cotton effectively isolates noise from inside the ventilation duct, achieving noise reduction. With the positioning component, when the filter screen has little dust and needs cleaning, the filter screen, movable frame, and fixed frame can be easily rotated out. At this time, the filter screen is not detached from the ventilation duct, allowing workers to clean it directly without disassembly, making operation convenient. With the limiting component, when deep cleaning of the filter screen is required, it can be directly removed from inside the movable frame for deep cleaning, also making operation convenient.

The utility model discloses a roller shutter door slideway guide wheel which comprises a guide rail, limiting strips are arranged on the two side walls of an inner cavity of the guide rail, a mounting frame is arranged at the top of the guide rail, a fixing plate is arranged at the bottom of the mounting frame, a plurality of screw holes are formed in the side wall of the fixing plate, clamping grooves are formed in the two side walls of the mounting frame, and containing grooves are formed in the side walls of the two clamping grooves. A containing groove is formed in the side wall of the installation frame, a plurality of springs are arranged on the side wall of the containing groove, an abutting block is arranged at the other end of each spring, a guide wheel is arranged at the top of the side wall of an inner cavity of the installation frame, and a sound insulation assembly is arranged on the side wall of the guide rail. The resilience force of the spring drives the abutting block to reset and extrude the guide rail, so that installation is more stable, the stability of the installation frame is improved by screwing the bolt into the screw hole, then part of noise is absorbed through the foam plate, the sound absorption cotton column is installed through the installation hole, and the noise is isolated through the sound insulation plate and the sound absorption cotton column.

The utility model relates to the technical field of refrigeration vending machines, and discloses a refrigeration vending machine with a heating function, which comprises a vending machine body with a refrigeration system, a heating box body is arranged on one side of the vending machine body, a heating device is embedded on the front side wall of the heating box body, a mounting chamber is arranged in the heating box body, and the heating device is arranged in the mounting chamber. The heating device is located in the installation cavity, an isolation structure is arranged on the side wall, close to the side of the vending machine body, of the installation cavity, the isolation structure covers the side wall, close to the side of the vending machine body, of the installation cavity, and the isolation structure isolates heat, noise and electromagnetic radiation generated when the heating device works; according to the vending machine, the heating box body is arranged on one side of the vending machine body, the heating device is arranged in the heating box body, the installation cavity is formed in the heating box body, and the isolation structure is arranged on the side wall, close to the side of the vending machine body, of the installation cavity; the device has the advantages of reducing the energy consumption of the refrigerated vending machine, prolonging the service life of the refrigerated vending machine and ensuring the normal sales and operation of the refrigerated vending machine.

The application discloses a motor cover for a refrigeration compressor motor, which comprises a base, a front cover and a rear cover, one side of the top of the base is provided with the front cover, the surface of the front cover is provided with a fixed block a, the surface of the fixed block a is provided with a threaded hole, the inside of the threaded hole is provided with a threaded rod in a threaded mode, the surface of the threaded rod is provided with a fixed block b in a threaded mode, the inner side wall of the front cover is provided with an oil storage disc, one side of the top of the base is provided with a support frame, the top of the support frame is provided with an oil storage box, and the top of the support base is provided with an oil supply pump. Through the arrangement of the front cover, the oil storage disc, the oil storage box, the oil supply pump, the electromagnetic valve, the brush, the oil delivery pipe, the touch switch, the ball valve and the alarm, the output end of the motor is lubricated through the collocation of the oil supply pump, the electromagnetic valve, the brush and the oil storage disc, so that the abrasion caused by long-time use is prevented, and the service life is reduced.

The utility model discloses a host computer's host computer improved structure, including host computer shell, be provided with motor and deceleration transmission subassembly in host computer shell, and the host computer shell periphery has opened host computer air inlet and host computer air outlet, and the motor has opened motor air inlet and motor air outlet, its characterized is, still including motor cover, and the motor cover includes air inlet chamber, air outlet chamber and sound attenuation chamber, and the air outlet chamber is located one side of air inlet chamber and the sound attenuation chamber is located the top of air inlet chamber and air outlet chamber, and the air inlet chamber is wrapped motor periphery and the motor air inlet is located the lower part of air inlet chamber, and the lower part opening of air inlet chamber is connected with host computer air inlet, and the upper part of air inlet chamber is connected with the upper part of air outlet chamber and the motor air outlet is located the upper part of air inlet chamber, and the lower part opening periphery of air outlet chamber is in contact with the inner wall of host computer shell, and the lower part opening of air outlet chamber is connected with host computer air outlet, this kind of food processing machine, add motor cover, shorten the exhaust path of motor, can also play certain sound insulation and sound attenuation effect simultaneously.

This application relates to the field of laser marking technology and provides an automatic marking device, which includes a frame, a conveyor belt, a vibratory feeder, a limiting component, a marking machine, and a sensor. The conveyor belt is rotatably connected to the frame. The vibratory feeder is located on one side of the frame and is used to vibrate and feed workpieces. The output end of the vibratory feeder is located above the input end of the conveyor belt. The limiting component is located above the conveyor belt and is used to limit the workpieces on the conveyor belt. The marking machine is located on the conveying path of the conveyor belt and is used to mark the workpieces. The sensor is located on the limiting component and below the marking machine, and is used to detect the position of the workpieces on the conveyor belt. This application has the effect of facilitating the marking of workpieces.

The utility model discloses a device of cooperation children anaesthetized under magnetic resonance examination relates to medical auxiliary technical field. Including split type mattress, this split type mattress is divided into the headrest area of supporting head portion and the main body support area of bearing body, and all are by the upper pad layer and lower pad layer of interconnection composition, head adjustment subassembly is set up above headrest area, is used for adjusting the head of patient is the head -up and holds the state of the chin. The utility model can promote the safety, accuracy and comfort of children nuclear magnetic resonance scanning examination.

The present application provides a gasket automatic feeding device for automatically delivering a gasket in a ball valve assembly process, which comprises a platform device, a vibration device group installed on the platform device, a conveying device group connected to the vibration device group in a conveying manner, a control unit, wherein the vibration device group and the conveying device group are controllably drivenly connected to the control unit.

The application discloses a jet vortex spinning machine, and relates to the technical field of textile equipment, which comprises a machine body, a sound insulation cover, a sound insulation cavity formed in the sound insulation cover, the machine body located in the sound insulation cavity, a sound insulation board arranged in the sound insulation cover, a plurality of buffer water bags arranged on the inner wall of the sound insulation cover, the buffer water bags located in the sound insulation cavity and abutting against the outer wall of the machine body, a noise sensor arranged in the sound insulation cover and located in the sound insulation cavity, and a control system arranged in the sound insulation cover and connected with the noise sensor. When the noise sensor senses that the noise intensity in the sound insulation cavity rises, the control system controls the water pressure in the buffer water bag to be enhanced. When the noise sensor senses that the noise intensity in the sound insulation cavity falls, the control system controls the water pressure in the buffer water bag to be weakened. The application can reduce the noise emitted during the spinning process of the spinning machine.

The utility model relates to the technical field of automobile steering gear, disclose a kind of noise reduction type automobile steering gear, including rack gear, two pull rods and two ball head pins, the outer wall of rack gear is engaged with steering lever by gear, the both sides of rack gear inner wall are fixedly connected with torque bar, the both sides of torque bar outer wall are respectively connected by hinged member hinged connection with the adjacent two sides of pull rod, the side of pull rod far from rack gear middle part is all connected with ball head pin by hinged member hinged connection, the outer wall of ball head pin upper end is all provided with slotted nut. In the utility model, the anaerobic adhesive used in the connecting place of pull rod and rack and torque bar tightening process ensure the firm and reliable connection, the molybdenum disulfide grease filled in ball head pin ensures its rotation smooth and reduces noise, rubber protective cover and the protective sleeve everywhere effectively isolate vibration, impact and external environment, further reduce noise.

The utility model relates to the field of conveyor equipment, in particular to a low-noise carrier roller which comprises a roller shaft, a roller cylinder, a bearing piece and a bearing ring seat, a protective sleeve is installed between the bearing piece and the bearing ring seat in an inserted and sleeved mode, a sealing device is arranged at the outer end of the bearing piece, and the sealing device comprises a first sealing sleeve piece, a second sealing sleeve piece and a sealing ring. A mounting ring groove is formed in the inner wall of the outer end of the second sealing kit, the two sealing rings are symmetrically arranged side by side, the outer ring parts of the two sealing rings are correspondingly inserted into the mounting ring groove, and the two symmetrical outer ends of the inner ring parts of the two sealing rings obliquely extend outwards to form lip edges correspondingly attached to the outer wall of the first sealing kit; an oil storage cavity for externally controlling introduction of lubricating oil is arranged between the sealing device and the bearing part, and a step ring is arranged on the outer wall of the inner end of the protective sleeve, so that a clamping groove communicated with the oil storage cavity is formed between the outer end of the protective sleeve and the bearing ring seat; the low-noise carrier roller can effectively reduce the damage of jumping wear, reduce noise, improve the rotation flexibility and prolong the service life.