62results about How to "Large service area" patented technology

A broadcasting base station device transmits broadcast signals modulated by a hierarchical modulation scheme to a mobile terminal device. A hierarchical modulation setup section compares the reception quality of the broadcast signals at the location of the mobile terminal device to predetermined reference quality. Based on the result of the comparison, the hierarchical modulation setup section specifies a hierarchical modulation scheme. For example, the constellation in each quadrant is reduced or enlarged. Accordingly, the broadcasting base station device can transmit optimal broadcast signals that match with actual reception quality to each mobile terminal device.

A smart home system based on a cloud computing includes: a home gateway connecting a home network device to an external network, the home network device being connected to a home network at each home. The system further includes and a cloud server, connected to the home gateway, for collecting contents information stored in the home network device and resource information of the home network information and performing a unified management of the contents information and the resource information at the each home.

A plurality of frequency-channels are provided, each composed of an OFDM multi-carrier. The OFDM sub-carrier of each channel is orthogonal to the sub-carrier of any other channel, so that two or more channels may be considered to transmit the same OFDM signal. Further, a sub-area that uses two or more channels is provided in each service area in which a base station is located at the center and assigned with a basic-frequency channel.

The invention discloses a jet aeration reactor for industrial or urban sewage treatment, which comprises a nozzle, a top nozzle member, a self-induced vibration mixing chamber, a lower nozzle member and short tube, wherein the air intake duct is arranged on the top nozzle member and is in communication with the induction chamber in the top nozzle member, the nozzle through-hole, the induction chamber in the top nozzle member, the self-oscillation mixing chamber, the lower nozzle member and the short tube are in communication.

The present invention discloses a power transmission device, including a revolution shaft, a power transmission frame wheel rotatably and coaxially coupled to the revolution shaft, a plurality of spinning shaft symmetrically provided at outside edges of the power transmission frame. A plural of blades rotatably and coaxially coupled to respective spinning shaft, and a blade rotating arrangement connected to respective spinning shaft for managing a rotational direction and speed of the blades, such that when the revolution shaft is powered to rotate driving the power transmission frame into rotation, the spinning shaft provided at outer edges of the power transmission frame are capable of being rotated with a reversed direction with speed ratio of 1:2 for maximizing the wind bearing size of the blade in wind favorable condition and decreasing the wind bearing size in wind undesirable condition.

The invention belongs to the technical field of environmental protection facilities, and discloses a vertical shaft-type double-turbine mixer. The vertical shaft-type double-turbine mixer comprises a parallel gear deceleration motor (1), an elastic fixing base (2), a hollow transmission shaft (4) and a turbine stirring impeller (5). The turbine stirring impeller (5) is in a shape of a concave taper. Long diversion stirring ribs (6) and short diversion stirring ribs (7) are arranged on an inner side of an arc surface of the concave taper and along the periphery. The long diversion stirring ribs (6) and short diversion stirring ribs (7) are arranged in intervals. Compared with common stirring equipment, the vertical shaft-type double-turbine mixer has excellent energy-saving advantages, and has power density of 1.5 to 2.0W/m<3>. Compared with a traditional underwater mixer, the vertical shaft-type double-turbine mixer has an energy saving rate of above 50 to 60% and can protect bods against damage.

The invention discloses a mobile type solar aeration machine which comprises adrifting body(5) and a floating body (1) which is connected with the drifting body (5) for enabling the drifting body (5) todrifton a water surface, wherein the aeration machine is mounted in the middle of the drifting body (5); an impeller (35) on the bottom of the aeration machine is assembled with a mixing plate (36); a plurality of mixing plate output runners (361) which are uniformly distributed are arranged in the mixing plate (36); and each mixing plate output runner (361) is provided with a solenoid valve (4) for controlling the mixing plate output runner (361) to open and close. When the mobile type solar aeration machine normally works, the aeration directions are eight directions which are uniformly distributed, so that the aeration is uniform; by virtue of the motion of the aeration machine, the solenoid valve in certain direction is changed into a closed state from a normally-open state by virtue of the remote controller, so that the whole aeration device can move towards certain direction. The service area of single aeration machine is greater, so that the funds are effectively saved. The aeration machine is convenient to move, and is not needed to be fixed through a rope, so that the landscape is good.

The invention discloses a restoration device of a black and odorous water body. An aerator of the restoration device is mounted in a guide flow cylinder; a garbage filtering mechanism is mounted at a rear end of a support; an outer cover is mounted at an upper end of the support; a high-pressure vortex air pump is mounted in the outer cover; a medicine adding mechanism and a microorganism culturing mechanism are mounted on a lower part of the support; a discharging hole of the microorganism culturing mechanism is communicated with the medicine adding mechanism; a medicine outlet of the medicine adding mechanism is communicated with the flow guide cylinder. According to the restoration device of the black and odorous water body disclosed by the invention, suspended garbage in water can be removed, and the oxygen dissolution efficiency and the self-cleaning capability of the water body are improved; meanwhile, sterilization and algae removal effects on the black and odorous water body can be enhanced, so that the flocculating settling capability of the water body is promoted; in addition, due to the restoration device, domestication and addition of the microorganisms can be realized; additionally, when the high-pressure vortex air pump does not work, the restoration device can play an underwater stirring effect; by utilizing anaerobic microorganisms in the water body, the nitrogen removal capability is improved, and the improvement on a self-cleaning function of the water body such as river channels and lakes can be realized.

The invention relates to the field of water pollution control, and particularly provides differential double-impeller underwater fine-bubble aeration device and method thereof. The device comprises amotor arranged on a platform and an underwater base, wherein a drive shaft is arranged between the motor and the bearing of the base to be taken as power source of an aeration impeller; a high speed impeller directly connected with the drive shaft and a low speed impeller connected with the drive shaft by a speed reducer are arranged at the bottom of the drive shaft; a spoiler is arranged at the lower part of each of the two impellers, a guide cylinder is arranged at the upper part of each impeller, the impellers rotate to sputter water and gas to the horizontal direction, to form a vacuum state, so that gas and water are sucked into the guide cylinder; and an annular buoy for regulating water-gas ratio is arranged above the guide cylinder. The invention also provides a method for debugging specific parameters of the device. Aiming at the technical problems of large bubbles, short gas-liquid contact time and poor oxygen dissolving efficiency of existing impeller aeration technology, the invention provides a simple and reliable solution.

The invention relates to an anti-clogging aerator which comprises an upper bubble rectifying device, a middle bubble cutting device, a lower bubble cutting device and an air intake component, wherein the upper bubble rectifying device comprises a cowling, a rectifying plate and a funneled cowling transitional connection casing; the middle bubble cutting device comprises a middle casing, a middle cutting plate and a middle funneled transitional connection casing; the lower bubble cutting device comprises a lower casing and a lower cutting plate; the air intake component comprises an air inlet pipe, a cover body and a baffle plate. According to the invention, gas is smashed into bubbles through cutting holes in the gas and liquid mixing process, after being cut at each stage, the bubbles become smaller in size and are increased in number, meanwhile, the gas flow rate is lowered so as to enlarge the service area of the bubbles. Blowdown holes are formed in the lower casing and the lower part of the cover body, the cutting holes are formed in the cutting plates and are not blocked easily or required to be cleaned, and the use is not influenced even the cutting plates scale slightly. The anti-clogging aerator is simple in structure and convenient to operate; procedures for cleaning the aerator frequently are reduced, and the production efficiency is improved.

The invention discloses a water body oxygenation and aeration method and device by utilizing a wind-solar complementary power generation system, and the device comprises a wind power generation device, a photovoltaic power generation device, a storage battery, an inversion device, an air pump, an aeration assembly, a supporting rod and a supporting base, and the surfaces of the supporting base andthe supporting rod of the wind power generation device are thin-film solar cell panels. A photovoltaic power generation storage battery and a wind power generation storage battery are arranged at thelowermost part of the supporting base, the two storage batteries are connected with the inversion device, the inversion device is connected with the air pump, the lower part of the air pump is connected with the aeration device, the aeration device comprises a first aeration pipe and a plurality of second aeration pipes, and the upper end of the first aeration pipe is connected with an air outletof the air pump. With alternate application of solar energy and wind energy, the energy supply self-sufficiency capacity is improved, and meanwhile stable operation of the aeration device in different seasons and different weather conditions is guaranteed.

The invention discloses a plate bar type microporous aerator. The plate bar type microporous aerator comprises an arc-shaped plate bar, a resistance-free check valve, a rubber aeration membrane, a V-shaped pressing bar and an inserting plate type connection bottom plate. The top of the arc-shaped plate bar is an arc-shaped plate. Installing holes of the resistance-free check valve are formed in the arc-shaped plate in the length direction at a certain interval, and an air distribution channel is arranged below the arc-shaped plate. A chassis of the resistance-free check valve is located in the air distributing channel, and the arc-shaped plate is covered with a valve body of the resistance-free check valve. The arc-shaped plate and the valve body of the resistance-free check valve are covered with the rubber aeration membrane. Anti-disengaging bars on the two sides of the rubber aeration membrane are clamped in a V-shaped clamping grooves, with convex points, of the arc-shaped plate bar through the V-shaped pressing bar. The plate bar type microporous aerator can be used for a bottom air blowing aeration device and can also be used for a sewage treatment project of an oxidation ditch process, particularly the defects that the aeration efficiency of a surface aerating machine of the oxidation ditch process is poor, oxygen supply is not sufficient, and the mechanical fault rate is high are overcome, and the plate bar type microporous aerator is multipurpose.

The invention provides a moving mist-curtain type spraying temperature-lowering device. A moving trolley is provided with a vertical post (6) and a transverse rod (13), the vertical post (6) is fixed to a trolley body (1) and is vertical to the trolley body (1), the transverse rod (13) is fixed to the top of the vertical post (6) and is parallel with the trolley body (1), a cross flow fan (30) is fixed to the vertical post (6), a spraying rod (36) is fixed to the transverse rod (13), an atomization nozzle (37) of the spraying rod (36) is arranged downwards and vertically, an air outlet of the spraying rod (36) is parallel with the transverse rod (13), the spraying rod (36) is connected to a water tank (19), a pressure pump (21) is arranged between the spraying rod (36) and the water tank (19), and the water tank (19) and the pressure pump (21) are arranged in a main frame (17) of a spraying mainframe fixed on the trolley body. The device is movable, flexible and large in service area.

The invention discloses an AI interaction robot with a built-in emergency power supply, and relates to the technical field of robots. The AI interaction robot with the built-in emergency power supplyspecifically comprises a base and an outer shell, wherein motors are arranged in the middle of the base, moreover, driving wheels are connected to the outer sides of the motors, wheel grooves are formed in the lower portions of the driving wheels, and bottom plates are arranged on the outer sides of the wheel grooves; sleeve rings are arranged in the middles of the bottom plates, and the inner sides of the sleeve rings are provided with steering wheels; the outer side of the base is provided with a rubber sleeve, the left side and the right side of the outer shell are correspondingly providedwith solar cell panels, and the outer shell is located above the base; and a main machine box is arranged in the middle of the outer shell, moreover, a maintenance port is formed in the front side ofthe main machine box, and a charging seat is arranged on the left side of the maintenance port. According to the AI interaction robot with the built-in emergency power supply, moving is achieved through the driving wheels, the two driving wheels are symmetrically mounted on the left side and the right side of the base, the robot can move integrally through the driving wheels, the robot can freelymove or follow people to move, and then the service area of the robot can be expanded conveniently.

The invention discloses an integral propeller for a submersible water impeller. The integral propeller is great in utilization effect, long in service life and convenient and quick in mounting and demounting and comprises a hub, blades, a shaft hole and a metal insert. The blades are connected with the outer periphery of the hub, the middle of the hub is provided with the shaft hole, and the metal insert is arranged between the hub and the blades. The hub and the blades are made from glass reinforced plastic materials by integral pressure casting, an inlet side of each blade is axially inclined forwards while an outlet side of each blade is axially inclined forwards from the hub to a gravity center line of the corresponding blade, and each blade is axially swept back from the gravity center line of the corresponding blade to a maximum-external-diameter position. The front end face of the hub is drum shaped while the rear end face of the hub is round, the hub is conical integrally, a planar projection of each blade is in a banana shape, and a wrap angle range is 130-160 degrees. The integral propeller is applicable to the submersible water impeller.

Provided is an apparatus and method for controlling a transmission output of a radio device using a television (TV) band based on a frequency band, the apparatus including a frequency band selecting unit to select frequency bands to be compared, a radio wave attenuation calculation unit to calculate a radio wave attenuation for each of the selected frequency bands, and a transmission output control unit to automatically control the transmission output of the radio device using a TV band based on a difference value among the calculated attenuation values. According to an example embodiment, it is possible to extend a service area while sufficiently protecting a service being provided in the TV band, thereby realizing an efficient use of frequency resources.

The invention discloses an efficient dynamic aeration device, and belongs to the technical field of environmental protection equipment. The efficient dynamic aeration device is characterized in that: an aeration branch pipe is communicated with a plurality of aerators; a tooth form baffle is arranged in the upper space of an air distribution plate of each aerator; floatable division small balls are arranged on the tooth form baffle in each aerator. The efficient dynamic aeration device has the following benefits: the service area is large; the oxygenation capacity is good; the oxygen utilization rate is high; the device is less prone to block; after the device is used, small ball bodies float to block a grid, and sludge cannot enter an aeration barrel body; the device is uniform in aeration, fine in bubbles, high in oxygen utilization rate and dynamic efficiency, long in service life and semi-permanently useable; the system is convenient to maintain and repair; the efficient dynamic aeration device is high in adaptability and wide in application range; the aerators are low in height, and generally, the mounting height from the tank bottom to the top plane of the aerators is not larger than 400 millimeters, so that tank volume is effectively saved, oxygenation at the tank bottom is guaranteed, and mud accumulation at the bottom is avoided.

The invention provides column-type multifunctional spray equipment. The column-type multifunctional spray equipment comprises a column-type equipment shell, a spray cooling system and a control main machine, wherein the spray cooling system is arranged in the column-type equipment shell and the control main machine is connected with the column-type equipment shell; an illuminating lamp bracket is installed at the top of the equipment shell and an illuminating lamp is installed on the illuminating lamp bracket; the column-type equipment shell comprises a supporting base, a hollow shell pipe body is fixedly arranged on the supporting base, a holder base, a liner bracket, a liner and a liner extension shaft are sequentially and fixedly arranged in the shell pipe body from the bottom to the top; the spray cooling system comprises a cross-flow fan, a fan mounting plate, a holder, a spray rod, an air guide nozzle, a spray nozzle, a water pipe and a spray main machine. The column-type multifunctional spray equipment has a spray cooling function, is integrated with functions of cooling, dust falling, illumination, landscaping, decoration, sterilization, epidemic prevention, disinfection and the like, and is applicable to outdoor open spaces such as squares, gardens, municipal roads, bridges, buildings and ports.