31results about How to "Improve noise pollution" patented technology

The automatic control method for steel ball coal mill in thermal power plant adopts a double-layer control structure, including an upper layer of self optimizing algorithm and a lower layer of multidimensional fuzzy control algorithm. The self optimizing algorithm finds out the optimal inside coal storage quantity inside the coal mill, the optimal outlet temperature of the coal mill and the optimal inlet negative pressure value of the coal mill as the controlling set values; and the multidimensional fuzzy control algorithm realizes the automatic regulation of the coal feed quantity, the hot air valve opening, and the recirculating air valve opening or the cold air valve opening, so as to ensure the safe and reliable running of the steel ball coal mill system in optimal mode.

The present disclosure provides a system for the synthesis of external sound of a vehicle, the system comprising a hazard analysis unit configured to detect a collision hazard between the vehicle and at least one further road user, in particular an outside traffic participant; at least one electroacoustic transducer; and a sound processing unit configured to generate an audio signal representing an, in particular vehicle dependent, synthetic noise signal and to control the at least one electroacoustic transducer to output a synthetic external sound based on the audio signal, wherein the sound processing unit is configured to modify the audio signal to enhance the perceptibility of the synthetic external sound by the further road user upon detection of the collision hazard.

The invention discloses an optimized control method for the milling process in cement plant, which realizes the automatic control of the charge level and the distribution thereof, the automatic control of cycling load and the automatic control of ventilation quantity through collecting the milling process signal with the based on advanced control. The invention also realizes the optimizations of each charge level into the mill, the material flow rate, the cycling load and the ventilation quantity, thereby outputting and controlling the feeding quantity, the rotation speed of the power concentrator and the rotation speed of fan. The invention makes an integral optimization for the milling process and realizes the running when the milling process lies in the maximum state or the running under the minimum milling consumption. Meanwhile, the invention can diagnose the fault of the milling process, evaluate the safety of the milling process, value and analyze the running of the milling process and propose reasonable suggestions for the operation of milling process, thereby guaranteeing constant, stable, safe and economic running for the milling process. The invention can be widely applied to the milling process in cement plant or to the milling processes of other industries with similar techniques.

The invention belongs to the technical control field of water collection and drainage, rainwater filtration, purification, regulation and storage, and particularly relates to a regulation and storage system with functions of rainwater filtration, purification and collection. Lawns, storage tanks, municipal pipe networks, and both sides of motor vehicle roads are respectively provided with curbstones in the shape of rectangular troughs. Below the non-slip surface layer, there is a double-layer sidewalk rainwater collection temporary storage layer to collect rainwater, and a graded gravel layer, activated carbon core filter layer, water purification layer and non-woven geotextile layer to filter seepage water. Through the collection, purification, storage, sewage interception and discharge of rainwater on the road surface, the present invention realizes the goals of peak shaving and storage, lawn conservation and water ecological restoration, and has important reference significance for the construction of "sponge city".

A waste heat recovery system of a vacuum damping machine comprises a condenser and a circulation water tank. A steam inlet, a condensate water outlet, a circulation water inlet and a circulation water outlet are formed in the lower portion of the condenser, the condensate water outlet and the circulation water outlet are connected with the circulation water tank through pipelines, the circulation water inlet is connected with the circulation water tank through a circulating pump, heat radiating tubes are arranged in the circulation water tank, and the condensate water outlet is connected with the heat radiating tubes through pipelines. The waste heat recovery system of the vacuum damping machine aims to reduce heat exchanger tube resistance and improve heat exchange efficiency, and meets the fact that the surplus steam of steam inject exhausting of the ejecting type vacuum damping machine has the characteristics of being instant, intermittent and mass-flow. A heat radiator is used as a condenser of the surplus steam to carry out structural design, and the waste heat recovery system of the vacuum damping machine can be used as auxiliary products for the vacuum damping machines of the mentioned type.

The invention provides a seeping rainwater pollutant intercepting treatment system for residences, comprising a pavement, rainwater collection wells, a guide pipe, a pollutant intercepting well, a filter well, a rainwater storage module, a drain pipe, a municipal network, a lawn, a regulation and storage reservoir, a water pump and a water pumping pipe. The seeping rainwater pollutant interceptingtreatment system for residences has the advantages that the structure is simple, the stress bearing performance is good, the system is capable of recycling, storing, filtering and purifying rainwater, the water ponding problem is effectively solved for residences, the rainwater regulation and storage function is achieved, climate conditions are improved for the residences, the hot island effect is relieved, the system can also improve noise pollution for residences, the problems, for instance, an existing urban drainage network system is unable to solve inner waterlogging due to storm runoffscan be solved before a storm, automatic control is provided for rain collection, pollutant interception, storage, discharging, peak-weakening regulation and storage, inner waterlogging relief and thelike, and the system is ecological and environmentally friendly and helps improve underground water resources, the ecology and other environments.

The invention discloses a centrifuging-free manufacturing method of a prestressed concrete pipe pile. Compared with the currently used centrifugal forming method, the manufacturing method has the advantages that one operation of inflating an air die is added and brings great affect on the manufacturing of the whole prestressed concrete pipe pile, the investment on plant construction is reduced, and the serious noise pollution of a centrifuging machine is also solved. The manufacturing method is free of residual slurry, so that the problem of pollution of slurry can be completely solved; the quality accident caused by insufficient concrete wall thickness can be avoided, thus the yield of the product is increased, and the production cost can be effectively reduced.

The invention provides a sound absorption wall which comprises an outer layer a, a center layer and an outer layer b. The sound absorption wall has a good sound insulation effect and is simple in structure, light in weight, high in construction speed and wide in application range.

The invention discloses a vibration-reducing and noise-reducing dry-type transformer, which includes a main body, an iron core and a clamping fastener, and a shock-absorbing pad is installed between the iron core and the clamping fastener. The advantage of the present invention is that by installing vibration damping parts with materials and reasonable structures between the solid installations in contact with the iron core of the dry-type transformer, and binding the inner structure of the iron core, the dry-type transformer can maintain the original performance. In addition, it can reduce vibration and transmission noise, improve the performance of dry-type transformers, and at the same time improve the noise pollution of the equipment use environment, especially suitable for places with special requirements for noise or installation conditions.

The invention provides a treatment device of special biological organic garbage for an animal farm, and the device is mainly used for solving the problems of high repeatability and high pollution rate caused by the failure in effective treatment of special biological organic garbage for an animal farm in the prior art. The treatment device comprises a solid-liquid separation mechanism, a cleansing mechanism and a feedback mechanism. The treatment device of the special biological organic garbage for the animal farm has the advantages of good safety, moderate internal cleaning and sterilizing function, low noise pollution, high reliability, convenience in repair, maintenance and use, good environmental suitability, no new pollution to the environment and people, and capability of effectively utilizing methane.

The invention discloses a cutting tool. The cutting tool comprises a base, a driving motor, a cutting blade, a machine shell, noise absorption structures, a shavings treatment box, wherein the drivingmotor is fixedly arranged on the upper end surface of the base, the cutting blade is fixedly connected to the output shaft of the driving motor through a transmission mechanism, the machine shell, fixedly connected on one side of the base, is used for partly storing the cutting blade in the machine shell, the noise absorption structures are arranged in the machine shell in an accommodated mode, the shavings treatment box is fixedly connected with the other side of the base, a suction ventilator is installed at the top of the shavings treatment box, the suction ventilator is connected with a suspended hood through a suction pipe, the suspended hood is in the position of the top of the machine shell and extent into the shell cavity, a shavings removal pipe is arranged on the bottom side wall of the shavings treatment box and communicates with the inner part of the shavings treatment box, and a valve is connected to the shavings removal pipe. According to the noise absorption structures,the noise produced when the cutting blade works is effectively removed, the noise pollution is effectively improved, according to the shavings treatment box, flying chips and raise dust produced during the process of cutting are timely absorbed and removed, and working environment is thus improved.

The invention discloses a biological organic garbage disposal device special for a livestock farm. The device comprises a solid and liquid separation mechanism and a purifying mechanism, wherein the solid and liquid separation mechanism is used for separating water and solids of excrements in the livestock farm; the purifying mechanism is used for separating residual solids, condensing, separating and collecting dried excrements and water freezing points and purifying and exhausting gas; the solid and liquid separation mechanism is connected with the purifying mechanism; the solid and liquid separation mechanism comprises a solid and liquid separation device and a high-temperature drying device which are sequentially communicated; and the purifying mechanism comprises a temperature-controlled self-cooling separation device and a gas purifying device which are sequentially communicated. The biological organic garbage disposal device special for the livestock farm is high in operation safety, and methane can be effectively utilized.