6results about How to "Effectively absorb noise" patented technology

The utility model provides a kind of low-noise flywheel shell structure, including flywheel shell shell body, flywheel shell shell body center is equipped with main shaft hole, the edge of flywheel shell shell body two sides is uniformly provided with multiple edge mounting holes, the end face in flywheel shell shell body is provided with multiple end face stiffeners that are circumferentially distributed, the sidewall in flywheel shell shell body is provided with multiple sidewall stiffeners that are connected with end face stiffener one-to-one, every two end face stiffeners are provided with end face sound insulation cotton, every two sidewall stiffeners are provided with sidewall sound insulation cotton, all end face stiffeners are connected with the end face mesh plate that covers every end face stiffener, end face mesh plate is connected with sidewall mesh cylinder to one side, sidewall mesh cylinder is connected with every sidewall stiffener and covers every sidewall sound insulation cotton.The utility model can effectively suppress the noise generated in the process of flywheel running, avoid the influence of noise on the NVH performance of whole vehicle.

The utility model relates to the technical field of stainless steel pipes, in particular to a stably-installed stainless steel pipe for a high-pressure boiler, and aims to solve the problems that a steel pipe is easy to shake, gaps are generated at the installation joint under severe conditions, and potential safety hazards of leakage are caused. Therefore, the use efficiency and effect of the stainless steel pipe are enhanced; comprising a stainless steel pipe body, a flange plate and screws, the flange plate is arranged at the bottom end of the stainless steel pipe body, the flange plate and a corresponding high-pressure boiler are fixedly installed through multiple sets of screws, and a stable supporting mechanism is arranged in the middle area of the stainless steel pipe body; the stable supporting mechanism further comprises fixing rings, fixing seats, supporting rods and a supporting plate, the middle of the stainless steel pipe body is fixedly connected with the corresponding fixing rings, the fixing seats are fixedly installed on the fixing rings, and the fixing seats are fixedly installed on the supporting plate.

The utility model discloses a base stabilizing structure for a low-speed centrifugal machine, which relates to the technical field of low-speed centrifugal machines, and comprises a low-speed centrifugal machine shell, a stabilizing assembly is arranged on the bottom surface of the low-speed centrifugal machine shell, the stabilizing assembly comprises a bearing seat, one side of the bearing seat is fixedly connected with a side position connecting plate, and the side position connecting plate is fixedly connected with the side position connecting plate. A vertical damping rod is fixedly connected to the bottom face, close to one end, of the side connecting plate, a supporting sliding plate is fixedly connected to the bottom face of the vertical damping rod, and a rubber rolling wheel is rotationally connected to the bottom face of the supporting sliding plate. Through the synergistic effect of the vertical damping rods, the vertical buffer springs, the transverse damping rods, the inclined buffer springs, the side buffer springs and the rubber rolling wheels, vibration generated during operation of the low-speed centrifugal machine can be buffered in an all-around mode, vibration and noise are effectively absorbed, interference to surrounding equipment and personnel is reduced to a great extent, and the service life of the low-speed centrifugal machine is prolonged. And the service life of the centrifugal machine can be prolonged.

The utility model relates to the field of automobile parts discloses a kind of automobile panoramic sunroof roof, including several supporting blocks, several The supporting block is fixed in the top surface of roof body, the top surface of roof body is provided with several positioning holes, the front side of supporting block is provided with accommodating slot, the inside bottom surface of accommodating slot is provided with threaded hole, the threaded hole is corresponding with positioning hole, the inner wall of positioning hole is inserted with hand screw bolt, the hand screw bolt is connected in threaded hole with screw thread, the end of hand screw bolt is fixed with limit block.In the utility model, through the collaborative action of supporting block, hand screw bolt, limit block, limit column and tension spring, the convenient operation of roof body can be realized, the precise cooperation of screw transmission and elastic reset is carried out, the structural integrity of roof body is maintained in the process of multiple assembly and disassembly, the damage of roof body and roof connecting part caused by disassembly is avoided, and fatigue failure caused by repeated stress of connecting piece is prevented.

The utility model belongs to PD door closer technical field, concretely relates to plastic steel composite type closer, including the fixed part and the sliding part of mutual sliding buckle connection, the fixed part and the sliding part are arranged on the door frame and the door leaf respectively, one side of fixed part and sliding part all is provided with injection molding sliding slot, is provided with telescopic baffle on the injection molding sliding slot of fixed part, the front end of corresponding telescopic baffle on the sliding part is provided with the jamb, the surface of injection molding sliding slot has the reinforcing steel rail spare, the front end of jamb and telescopic baffle contact one side is provided with buffer soft rubber part. The utility model utilizes the composite design to reduce the weight of closer, guarantees the firm performance of pulley track at the same time, and is relatively quiet when opening and closing operation, can promote the use experience of PD door.

The utility model relates to the field of vacuum pump, concretely relates to a cabinet type silencer for magnetic suspension turbine vacuum pump outlet, including silencing cabinet, the both ends of silencing cabinet are symmetrically linked with air inlet pipe and air outlet pipe, and the coaxial fixed setting of silencing cabinet has the silencer, and the axis of silencer coincides with the central axis of air inlet pipe and air outlet pipe, the coaxial fixed setting of silencer in has spiral silencer board, and the airflow contact surface on spiral silencer board is provided with a plurality of first silencing hole of array distribution and fills sound absorption material in its inside, the annular silencing cavity that the outer wall of silencer and the inner wall of silencing cabinet surround forms, fills sound absorption material in annular silencing cavity, the second silencing hole of a plurality of of communicating silencer inner chamber and annular silencing cavity is evenly penetrated and set up on the cylinder wall of silencer, the utility model can optimize airflow path, strengthen the interaction of sound wave and silencing structure, improve noise absorption efficiency, and simultaneously avoid the adverse effect caused to the pumping performance of pump.