8 results about "Noise pollution" patented technology

The invention discloses an automatic control dispersing valve which comprises a shell. A feeding end is arranged at the top of the shell. One end of the feeding end is in interference connection with an end cover. A feeding pipe is connected below the feeding end. The feeding pipe extends out of the outer wall of the shell. A valve element is connected to the inner wall of the feeding pipe. The valve element is a cylinder, and a through hole is formed in the axis of the valve element. According to the automatic control dispersing valve, an air pump is used for inflating an air cylinder to serve as power, the linear reciprocating movement of the air cylinder is converted into one-direction intermittent rotation of a pawl, the pawl pushes a ratchet wheel to rotate, the ratchet wheel is connected with the valve element, and therefore the position of the through hole in the valve element is adjusted to achieve feeding and feeding closing. According to the design, the structure is reasonable and simple, noise pollution is lowered, meanwhile, electric power serves as cleaning energy, secondary pollution caused by using a diesel engine and a gasoline engine is avoided, a pressure sensor and a control panel are matched with an air pump, automatic control can be achieved through the arrangement of the control panel, operation is simple and convenient, the manufacturing cost is greatly lowered, great practicability is achieved, and popularization is easy.

The invention provides a silent generator set which comprises a first cavity, a second cavity and a third cavity. The first cavity is of a non-seal structure and is provided with an air inlet, and an air filter is mounted in the first cavity. The second cavity is of a full-seal structure, and an engine, an air blower and a first-stage silencer are arranged in the second cavity. The third cavity is of a non-seal structure and is provided with a gas inlet and an air outlet, and a water tank, a cooling fan and a second-stage silencer are mounted in the third cavity. When a generator works, the sound generated during work of the generator set can be effectively lowered, and noise pollution of the generator set can be effectively reduced; by means of efficient water circulation, the temperature of the generator set can be reduced, and the use efficiency of the generator set can be improved; and by means of air circulation, heat generated by the generator set can flow fast, the temperature in a generator cavity can be reduced, and a protection function can be achieved on the generator set.

The invention discloses a mobile vehicle horn system. The mobile vehicle horn system comprises a car horn module, a navigation positioning module, an information processing unit, a horn control unit and a vehicle-mounted terminal. The car horn module and the navigation positioning module are connected with the information processing unit. The information processing unit is connected with the horncontrol unit. The horn control unit is connected with the vehicle-mounted terminal. The invention further discloses a working method of the mobile vehicle horn system. According to the mobile vehiclehorn system, different vehicle driving hinting strategies can be made according to whistling requirements of road sections, noise pollution of a city can be reduced, the life quality of citizens is improved, regulation violation whistling of vehicles at the horn prohibiting road sections can be prevented effectively, and the unnecessary loss of drivers is avoided.

The invention discloses an energy-saving environment-friendly low-noise desulfurization, denitrification and dust removal device and a treatment method. According to the invention, a fixed frame is arranged in and fixedly connected with a furnace body, and the top of the furnace body is connected with a flue gas drainage pipe and a return pipe; the fixed frame is connected with a spraying circularring body; a urea solution injector is connected with a urea solution distribution pipe; the urea solution distribution pipe is connected with the spraying circular ring body; a lime slurry injectoris connected with a lime slurry injection pipe; a sodium hydroxide injector and an activated carbon injector are respectively connected with an injector head I and an injector head II; a second connecting pipe is coated with a sound insulation material; the inner wall of an SCR reaction tower is coated with a catalyst, the right side wall of the SCR reaction tower is provided with a discharge pipe, a liquid ammonia ejector is arranged outside the SCR reaction tower and connected with a liquid ammonia ejector head; the flue gas drainage pipe is coated with a sound insulation material, the otherend of the flue gas drainage pipe is connected with a flue gas injection pipe, and the flue gas injection pipe is connected with a heating pipe; and the heating pipe is connected with the return pipe. According to the invention, noise pollution can be reduced while a purification effect is achieved. The device and the method of the invention are suitable for being widely applied to flue gas treatment.

The invention discloses a sound-proof electric control cabinet, which comprises a main body of the electric control cabinet, sound-proof cotton, sound-absorbing wedges, rubber sealing strips, perspective windows and vacuum glass. The sound-proof cotton is fitted and fixed on the inner wall of the main body of the electric control cabinet. The sound-absorbing wedge is arranged on the inner wall of the electric control cabinet body, the rubber sealing strip is arranged on the edge of the door of the electric control cabinet, the see-through window is set on the surface of the door of the electric control cabinet, and the vacuum glass is embedded in the see-through window. Through the above method, the present invention provides a sound-proof electrical control cabinet. Compared with the disadvantage of high noise of electrical modules in other electrical control cabinets, the present invention uses sound-proof cotton and sound-absorbing wedges to eliminate the noise in the electrical control cabinet and improve the environmental protection performance of the electrical control cabinet. , reduce noise pollution.

The invention belongs to the technical field of mechanical and electrical products, and particularly provides a percussion drill with an MP3 (moving picture experts group audio layer-3) player and an ear protector. The percussion drill with the MP3 player and the ear protector comprises a percussion drill shell, an internal power supply and an internal charger; and the MP3 player is arranged on the left upper portion of the percussion drill shell and is connected with a pair of built-in protection earphones through earphone connecting lines. The problem that the existing percussion drill does not have the ear protector and the MP3 player is solved. The MP3 player can be well used with the percussion drill, noise pollution generated during working of the percussion drill is shielded effectively, the MP3 player can be used for playing music and audio learning materials, an operator can listen to the music and the audio learning materials during working, the percussion drill with the MP3 player and the ear protector is beneficial to physical and psychological health of the operator, and the work efficiency is improved.

The invention discloses a main drive for a double-servo numerical-control turret punch press. The main drive comprises a driving servo motor and an auxiliary servo motor. A speed reducer is fixedly connected to the driving servo motor. An output shaft of the driving servo motor is fixedly connected with a connecting shaft of the speed reducer. A joint seat is fixedly connected to the surface of the speed reducer. A crank is fixedly connected to one end of the speed reducer and located in the joint seat. The crank is sleeved with a connecting rod. An upper sliding block is movably connected to the bottom end of the connecting rod through a connecting pin. A nut is fixedly connected to the bottom of the upper sliding block. According to the main drive, a lower sliding block is driven by the auxiliary servo motor to move downwards, so that the stroke from the dead point to the pre-pressing point is reduced, the eccentricity of the crank is reduced, the power of the servo motors is reduced, the energy consumption is lowered, the rated stamping force can be reached, the high stamping frequency can be reached, and the precision is improved to a certain degree due to the short moving distance; and in work, due to the fact that the motion stroke is short, the generated noise pollution is small.