210results about How to "Low ventilation resistance" patented technology

The invention discloses a circulating sludge biological fermentation tower which comprises a tower body, an openable tower cover, a storage tank and a plurality of rotatable fermentation devices, wherein the openable tower cover is arranged on the top of the tower body; the storage tank is arranged at the bottom of the tower body; the rotatable fermentation devices are arranged in the tower body in parallel; the fermentation devices divide an inner cavity of the tower body into a plurality of layers of fermentation bins along the axial direction; the lower part of each layer of fermentation device is provided with a ventilating oxygen supply pipeline communicated with a blower; the upper part of each layer of fermentation device is provided with an air outlet pipeline communicated with aninduced draft fan and a monitoring device; the monitoring device is controlled by a control room; and a mechanism for driving the fermentation devices and the tower cover to move, the blower and the induced draft fan are all controlled by the control room. The invention also discloses a circulating sludge biological processing system and a processing method. By the circulating sludge biological fermentation tower, the circulating sludge biological processing system and the processing method, industrial biological fermentation desiccation treatment can be continuously and stably carried out onsludge under the conditions of high efficiency and low energy consumption.

The invention relates to a production process of an environmental-protection plant energy particle fuel, which is characterized by collecting combustible plant materials as raw materials and then sequentially processing the raw materials by the following steps of: (1) pulverizing: the raw materials are pulverized into powdery particle materials with the particle size less than 2 mm; (2) drying: the pulverized materials are dried so that the water content of the materials is 12%-20% by drying; and (3) extrusion molding: extrusion molding is carried out to the dried materials so that the materials form a solid particle fuel with the density of 1.0-1.4 g/cm<3> through extrusion molding. The invention can be used for processing various combustible plant materials comprising agricultural or forestall wastes and the like into high-efficiency combustible solid fuel particles, thereby solving the problem of considerably increased agricultural (forestall) wastes at present, also relieving the current situation of increasing energy shortage at present and being beneficial to environmental protection and energy saving.

The invention discloses a low-temperature circulation dryer for crop seeds, which comprises a dryer body, a hoister, a draught fan, a hot-blast furnace, a heat exchanger, small air inflow angle boxes, air exhaust angle boxes, air inflow angle boxes, a grain discharge device, a delivery machine under the dryer and a grain-moisture and drying-temperature on-line detector. The low-temperature circulation dryer solves the problems of uneven material drying, higher energy consumption, a low annual utilization rate and the like in the prior art effectively, and has the characteristics of simple structure, simplicity in operation, high applicability, high-quality, efficient, safe and energy-saving low-temperature quick drying and the like.

Ventilation apertures are respectively formed circumferentially so as to pass axially through an inner circumferential side of a rotor core, rotor grooves are respectively formed circumferentially on an outer circumferential surface of the rotor core so as to have groove directions in an axial direction, and a centrifugal fan is fixed to the shaft at an end of the rotor core near the front frame, and a cyclic path is formed in which, during operation of the centrifugal fan, cooling air flows into the ventilation apertures from near a rear frame, passes through the ventilation apertures and flows out near the front frame, flows radially outward near the front frame and flows into the rotor grooves, passes through the rotor grooves and flows out near the rear frame, and flows radially inward near the rear frame and flows into the ventilation apertures.

The invention discloses a high-efficiency energy-saving mine multi-stage fan station ventilation monitoring technology system. Intake fan stations (1) are arranged in the intake sections of a mine, return fan stations (2) are arranged in the return air sections, air consumption fan stations (3) are arranged in the air consumption sections, and a ground main mine monitoring room (4) is arranged on the ground surface of the mine. A multi-stage fan station ventilation network calculation program is developed to carry out numerical calculation on the ventilation parameters of the ventilation system, such as ventilation resistance, the blowing rates of fans of the fan stations, wind pressure, efficiency and total power; the number of fan station stages and the locations of the fan stations are determined; fan models are chosen, and the blowing rates are regulated; and a remote centralized multi-stage fan station monitoring system and an underground on-line atmospheric environment monitoring system are constructed. The pressure-equalizing ventilation of each mine ventilation network section can be realized, air leakage is reduced, the starting and stopping of the fans of the intake fan stations, the return fan stations and the air consumption fan stations in the mine can be remotely controlled, the variable-frequency speed regulation of the fans is realized, the system can perform inverted ventilation, parameters, such as the operating states of the fans, the blowing rates and wind pressure of the fans, motor bearing temperatures and power factors, can be monitored in real time, and the underground ventilation environment can be monitored in real time and on line.

The invention discloses a high-temperature aerobic fermentation process for sludge with low energy consumption and no pollution, and relates to the technology for aerobic fermentation treatment on dewatered sludge. The process is used for decontamination, stabilization and reduction treatment of town sewage sludge, sewage sludge, organic industrial wastewater sludge and organic sludge. In the process, the dewatered sludge and auxiliary materials are mixed, the mixture is crushed into composting particles with the diameter less than or equal to 20mm, the composting particles are evenly distributed into a pile with the height of 2m by a spreader, and the pile is covered by fermented decaying products to effectively reduce the odor emitted by the composting. A fermentation bin with two combined or separated bins is provided with a ventilation and oxygen supply system which is detachable, is easy to clear, prevents blockage and has even gas distribution, and a pile turning device inside; and the oxygen concentration, fermentation temperature, water ratio of the pile in the fermentation bin are controlled, so that sludge fermented products meet national standard. The process facilitates air supply and aerobic fermentation of the pile due to small diameter of the composting particles and the loose pile, has thorough fermentation of the particles of the sludge mixture, improves the quality of the sludge fermented products, makes the sludge fermented products meet the decontamination, stabilization and reduction index requirements specified by the national standard, and greatly saves electric energy consumption and reduces operating cost.

The invention provides an environmental-friendly coal-saving agent for a cement shaft kiln, comprising the following raw materials by weight portion: 3-7 portions of a coal combusting low-temperature modifying agent, 2-6 portions of a compound sulphur-fixing agent, 0.5-0.96 portion of a combusting inductive agent, 3-7 portions of a raising agent, 56-96 portions of a combusting poising agent, and 5-15 portions of a highly-efficient sulphur-fixing agent. The coal combusting low-temperature modifying agent can be potassium permanganate, potassium chlorate, potassium perchlorate, sodium chlorate, sodium nitrate and the like; the compound sulphur-fixing agent can be sodium carbonate, calcium oxide and the like; the raising agent can be waste liquor of paper mill containing Na or/and Ca sulphonate and the like; and the combusting poising agent can be a chemical waste reducing substance containing sodium chloride and the like. The method solves the problems of environmental pollution and resource waste in the prior art, uses compatibility of multiple chemical raw material of 6-10 percent and chemical waste to prepare the coal-saving agent with small dosage and fast effect to be added to the production of the cement shaft kiln in trace quantity, and has the advantages of resource conservation by using waste, coal conservation and consumption reduction, and reduction of dust and SO2 discharge and environmental pollution.

To provide a small blowing device of high reliability, simple in constitution and capable of switching to air supply and exhaust. The blowing device 20 is provided with a blower section 50 and an air course switching device 40 for switching to an air course for supplying outdoor air into a room, and to an air course for exhausting indoor air to the outdoors. The blower section 50 is provided with a centrifugal blower 33 for sucking air from an axial direction and blowing off air in a circumferential direction, a suction chamber 31 formed larger than a suction port of the blower 33, and a blowoff chamber 32 formed on the blowoff side of the blower 33. The air course switching device 40 is provided with an outer shell 46 having a plurality of openings, an air course switching body 41 turnably arranged in the outer shell 46 and having a partition wall for dividing the inside into a plurality of air courses, and a driving device 47 for turning the air course switching body 41 to switch communication between the plurality of air courses of the air course switching body 41 and the plurality of openings of the outer shell 46. The air course switching device 47 is juxtaposed to overlap the suction chamber 31 of the blower section 50.

A device with a griddle and a process for generating power by efficiently recycling sinter waste heat relate to the technical field of waste heat power generation. The device comprises a sinter cooling system, a waste heat power generation system and a smoke system. The sinter cooling system and the waste heat circulation power generation system are connected through the smoke system to form a loop. The process includes 1) sinter cooling, 2) the smoke system and 3) waste heat power generation. The device and the technological process for waste heat power generation have the advantages of completely utilizing waste heat discharged in the sinter cooling process, obviously increasing power generation quantity, obviously reducing system self power utilization rate and being remarkable in energy-saving effect.

This invention relates to new double-slope wave trickle fillings of a cooling tower, in which two adjacent sets of main cooling wave bands are arranged reversely in stagger with a pitch of waves in between, the distance of the internal binding points is 2-3 times that of the exterior one, a secondary stagnant wave groove is set on the wave band and the cross section is a sine wave, the angle between the stagnant wave groove and the length edge is 15deg, a shunt bank is set between the peak of a main wave band and the valley of the adjacent main wave band to transit smoothly and the highest point of the shunt bank is 4/1-2/1 of the peak.

The present invention provides a tridimensional distributed materials throughflow method and ventilated synthetic energy-saving method, applied to physical or chemical reaction field of biomass fermentation, thermal decomposition, drying, fluid and materials thermal transmission transfer of mass beween fluid and materials. Fluid inlet duct and outlet duct having throughflow holes bestrewed are arranged in materials, fluid passes through the materials layer through the throughflow in short distance to implement low resistance ventilation of materials, and uncontrolled ventilation without draught fan is implemented. Wind column can be added to use rotation stream inside the column and an optothermal increase system ventilation ability, and superabundance dynamic force can be used for power generation, and circumferential wind of the wind column can be used for power generation. the invention comprises methods of using warm air produced by discharged turbine tail steam condensation heat of thermal power generating plant to generate power or to be as uncontrolled ventilation smoke discharging dynamic force for boiler, and methods of uncontrolled ventilation fermentation type ecological urinal and polyporous material tridimensional arrangement throughflow thermal transmission transfer of mass employing polyporous material such as foam copper or the like.

An air conditioning apparatus includes a casing and a dividing cosmetic panel. The casing has a suction port and a discharge port. The dividing cosmetic panel has a plurality of dividing panels and an opening/closing moveable mechanism for varying the positions of the dividing panels relative to the suction port. The opening/closing moveable mechanism switches between a state in which the dividing panels are disposed in proximity to each other, thereby blocking air flow through the suction port, and a state in which the dividing panels are separated from each other to allow ventilation through the suction port.

The invention discloses a porous-medium gas hot water heater, relating to a heater in which a pipe is wound into a spiral form to separate the continuous flows of water and a heating medium; the heater is structurally characterized in that: fine-pore porous medium materials are filled in an anti-backfire channel and a groove of a water cooling sleeve; macropore porous medium materials, which are metal fibers or foamed ceramics, are filled in a combustion chamber; heat exchanging tubes exchange heat directly with the macropore porous medium materials in the combustion chamber to conduct radiation or or heat exchange with the form of heat conduction, and high temperature fume realizes strong heat exchange between the peripheral dense heat exchanging tubes and the macropore porous-medium materials and leads the fume to be cooled rapidly and steam to condense directly on the tube walls; therefore, the heat conduction of the combustion chamber is strengthened and the heat released by the combustion can be rapidly and effectively transferred to water so that the steam in the fume condenses to recycle the condensation heat of water, thus realizing the goal of ultimately absorbing the heat released by the combustion. The hot water heater has simple structure and heat efficiency of over 96 percent, meeting the Grade-I energy efficiency standard for household rapid water heaters.

The invention relates to an egg trolley for a roadway incubation machine, belonging to the poultry cultivating technology; the egg trolley comprises a frame with caster wheels, a turning driving device arranged on the frame, a plurality of groups of egg brackets, a connecting rod, a rotary arm and a rotary arm shaft; each group of the egg brackets are connected on each group of the rotary arms, and the arms are arranged on the connecting rod connected with the turning driving device, each rotary arm is arranged on the rotary arm shaft and swings around the rotary arm shaft, the rotary arm shaft is arranged on the frame and is parallel to the air flowing direction of the incubation machine, when an egg tray on the egg bracket is turned, the egg tray plane is parallel to the air flowing direction of the incubation machine. By changing the egg turning structure of the egg trolley and leading the back and forth egg turning of the egg tray of the existing egg trolley to be changed into left and right egg turning thereof with the same direction with the air supplying, the ventilating resistance is reduced, the ventilation is smooth, the phenomenon that local high temperature and low temperature caused by non-uniform humidity and high temperature difference is eliminated, so as to lead the hatching egg embryonic development time to be consistent, improve the survival rate and increase the hatching rate and healthy chick rate.

The invention relates to a ventilating cushion, comprising a cushion and a back cushion; wherein, a laterally extended main air duct is connected between the cushion and the back cushion, one end of the air duct is closed and the other end of the air duct is connected with the outer gas source, the cushion and the back cushion are respectively provided with a vertically extended air distributing duct communicated with the main air duct, the air distributing duct are arrayed laterally and transversely, the tail end of the air distributing duct is communicate with air, the two lateral faces of the pipeline of the air distributing duct are provided with a plurality of air holes and the grooves between the two adjacent air distributing duct forms the air holes for the passing channel of air. The ventilating cushion has the advantages that: the cushion has favorable unblocked performance of the ventilation circuit for the air outlet is difficult to be blocked and good ventilation and cooling effect.

Cooler (107) provided on the back surface side of a refrigerator, the cooler for generating cool air, defrosting heater (132) provided below cooler (107), and cooler cover (120) having cool air return port (135) are provided. Center of defrosting heater (132) is set on the upper side of a lower surface of a freezing compartment, projection member (136) protruding into the interior side is arranged on the lower surface of the freezing compartment, and a lower end of cool air return port (135) and an upper end of projection member (136) are overlapped with each other in the height direction.

The invention discloses a protective cover and an air-conditioner comprising the same. The protective cover (50) comprises a plurality of annular members (52) disposed coaxially with each other. A plurality of radial members (53) extending in the radial direction are so installed as to span the adjacent annular members (52, 52). The intervals between the adjacent annular members (52, 52) are larger than those between the adjacent radial members (53, 53) positioned between these annular members (52, 52).

The present disclosure provides a photocatalyst filter that can efficiently decompose and eliminate ozone gas or VOC and has a low ventilation resistance. The photocatalyst filter includes a sheet-like filter substrate and a photocatalyst layer supported by the filter substrate. The photocatalyst layer exhibits a photocatalytic action by receiving light having a wavelength of 400 nm or more. The photocatalyst filter has an aperture ratio of 35% or more and 80% or less.

The invention relates to a tunnel fire simulation experiment device under the action of multi-angle canyon wind, which belongs to the technical field of fire safety and comprises an experiment table main body, a canyon wind system and a matched measurement and control system, wherein the experiment table main body comprises a tunnel model movably connected to a bracket; the canyon wind system comprises a draught fan and a rectification box which are movably connected to the bracket, and an air outlet of the draught fan is communicated with the rectification box through a soft connection section. The rectification box comprises a butt joint section, a rectification section and a current stabilization section which are connected in sequence. The device is simple in structure, the device is simple in structure and low in manufacturing cost, makes up the defects that a full-size experiment is high in cost and a numerical simulation tool is not accurate enough, guarantees the repeatabilityof the experiment, and has great application value and important guiding significance for developing laboratory scientific research and the influence of actual canyon wind on bridge tunnel ventilationand tunnel fire in a high-altitude area.