14 results about "Centrifugal fan" patented technology

The invention relates to a concrete sample curing room which consists of a laboratory as well as a microcomputer, a temperature sensor, a humidity sensor, a constant temperature and humidity box and an air flue that are arranged in the laboratory, wherein the microcomputer is respectively connected with the temperature sensor, the humidity sensor and the constant temperature and humidity box which is internally provided with a hermetically sealed compressor, an electric heating pipe, an ultrasonic humidifier, a centrifugal fan and an evaporator; an air outlet of the constant temperature and humidity box is connected with the air flue; the temperature sensor monitors the temperature in the constant temperature and humidity box and transmits a temperature signal to the microcomputer; the humidity sensor monitors the humidity in the constant temperature and humidity box and transmits a humidity signal to the microcomputer; the microcomputer controls the ultrasonic high-frequency oscillation, converts the water fog into ultramicrons with the particle size of 1-5 microns, diffuses the water fog into the air through a pneumatic device, and guarantees the even indoor temperature and humidity through setting pipeline fog sending and blowing manners; the air transmitted by the centrifugal fan blows the fog of the ultrasonic humidifier to everywhere of the constant temperature and humidity box through the air flue.

The electronic element and device powder covering machine based on one heating mechanism with wind direction and wind speed control includes one frame, one fluidized bed, one heating mechanism and one powder soaking mechanism. The heating mechanism includes one heating furnace, one heat flow homogenizing mechanism on the heating furnace, and one heating and insulating box. The heating furnace is provided with heating elements and a hot blast circulating passage; the heating and insulating box includes a wind hood, a centrifugal fan, an inner container and a casing. The present invention is used to heat electronic element and device with hot blast in the temperature uniformity within 1 deg.c.

The invention discloses a grains airing koji-adding device. The device comprises a controller and a feeder rack, wherein a feeder hopper is arranged in the feeder rack, the position, corresponding to the feeder hopper, on the lower part of the feeder rack is provided with a feeder chain plate driven by a driving device, a vertical feeder partition plate is arranged between the feeder hopper and the feeder chain plate, one end of the feeder chain plate is connected with an airing machine chain plate on an air airing machine rack, a plurality of round holes are formed on the airing machine chain plate, two sides of the airing machine chain plate are provided with airing machine protective plates, and an air room is formed among the airing machine protective plates, the airing machine rack and the airing machine chain plate; the side of the air room is provided with a centrifugal fan communicated with the internal of the air room. Through the adoption of the grains airng koji-adding device, the mechanical automatic problem of the production equipment in the airing and koji-adding process of the white wine brewing process is solved.

The invention discloses a vehicle overpressure and negative pressure filtering and purifying comprehensive protection system, realizing the overpressure protection of carriage and negative pressure protection of carriage van-type vehicle, which comprises an overpressure protection device, a negative pressure protection device and a protection control device; the overpressure protection device is fixed in a compartment at left-front part of carriage, which comprises a fan, a filter absorber, a collecting tank, a cab blast pipe, a carriage blast pipe and an air volume adjusting valve; the negative pressure protection device is fixed on the floor of the carriage, which comprises a casing, a second high efficient filter, a high efficient filter, a centrifugal fan, an electric butterfly valve, an air exhausting flange, an ultraviolet lamp and a protective gate. The vehicle overpressure and negative pressure filtering and purifying comprehensive protection system has the advantages that the van-type vehicle can safely pass though biologic pollution area, and protect the environment on the way from pollution when biologic pollution sick and wounded or biologic pollutant are conveyed.

The invention discloses a multi-combined heat pipe cooling system with bottom type microchannel heat exchangers. The multi-combined heat pipe cooling system with the bottom type microchannel heat exchanger comprises cabinets, cold air channels, centrifugal fans, microchannel heat exchangers and an empty space, wherein the empty space is arranged under the cabinets; the end parts of the empty spaceare open; one cold air channel is reserved between every two cabinets; each centrifugal fan is arranged under the corresponding cold air channel, cold air is blown into each cold air channel throughan electric air valve, and the centrifugal fans are arranged in the empty space; and each centrifugal fan is further connected with the corresponding microchannel heat exchanger. Compared with a traditional cold channel closed type heat dissipation mode, the multi-combined heat pipe cooling system with the bottom type microchannel heat exchangers provided by the invention is convenient and practical; the microchannel heat exchangers are arranged at the bottom for concentrated heat exchange, compared with a heat exchange method by using each cabinet back plate, the efficiency of concentrated heat exchange is higher, moreover, the heat exchange speed is higher by using the centrifugal fan for heat exchange, and dust in a machine room is filtered through filter screens, little dust is suckedin the cabinets inside the machine room, and the service life is prolonged.

The invention discloses a medicinal material sorting machine, and belongs to the field of traditional chinese medicine processing. A reciprocating type screen is driven by an eccentric shaft speed reducing motor to move on the upper surface of a support track in a reciprocating mode and the size of the medicinal materials is separated, the large-quality medicinal materials can shake out from an outlet of the screen, air is blown out from an outlet of an fan through the outer rotor centrifugal fan below the screen outlet, and the low-weight large-volume defective medicinal materials are separated by utilizing wind power with the high-quality large medicinal material.

The invention discloses a double-end cutting saw for aluminum alloy profile machining. The double-end cutting saw for aluminum alloy profile machining comprises a platform, guide rail installing plates, sliding platforms, saw heads, supporting legs, gooseneck pipes, sprayer heads, material bracket platforms, a guide rail, a control console, a centrifugal fan, a metal filter screen, a scrap recycling box, a scrap feeding pipe, a transverse plate, water pumps, water tanks, water outlet pipes, a groove, fans, an air outlet joint and an air inlet joint. According to the double-end cutting saw foraluminum alloy profile machining, when an aluminum alloy profile is cut by means of the device, the water pumps of a cutting and lubricating mechanism work, cutting liquid in the water tanks can be sprayed to the cutting portions through the sprayer heads of the gooseneck pipes under the action of the water pumps, therefore, saw blades of the saw heads are lubricated and cooled, generation of burrs on the cut aluminum alloy profile is greatly reduced, and the quality of the cut profile can be guaranteed; and when the profile is cut, aluminum scrap falling to the grooves is sucked into the scrap recycling box under the action of the work of the centrifugal fan, therefore, aluminum scrap recycling is facilitated, and the aluminum resource waste condition is reduced.

The invention relates to the field of forest fire control, in particular to a crawler-type wind fire extinguishing robot with an adjustable wind outlet speed. The crawler-type wind fire extinguishing robot is characterized in that the whole robot is powered by a power system; the power system outputs torque after being started; a part of the torque is transmitted to a driving wheel of a crawler walking mechanism through a belt to provide power for the crawler walking mechanism, so as to drive the crawler walking mechanism to walk to a specific location where a fire breaks out, the other part of torque is transmitted to an intermediate transmission mechanism through a belt, then a clutch assembly is adjusted, the torque is transmitted to a main shaft of a double-fan system through a drive pulley, the main shaft drives two centrifugal fans to rotate, and high-speed and high-pressure airflow is formed in volutes of the two centrifugal fans, and is thrown out through two air pipes to extinguish the fire; a double-air-pipe adjusting mechanism correspondingly adjusts the spatial positions of the left air pipe and the right air pipe and is aligned to a fire point to achieve the optimal fire extinguishing effect. The diffusion condition is changed by adjusting the angle of a baffle, so that the flow velocity sectional area of a fire extinguishing air duct is changed, and the air speed of a fire extinguisher is adjusted.

The invention discloses a closed-cycle recycling method for a solvent in PVC foaming board production. A hot air circulating oven, a surface condenser, a centrifugal fan, a pretreater I, a pretreater II, an adsorber A, an adsorber B, an adsorber C, a compressor, a condenser and a recovered solvent storage tank which are connected in sequence are involved in the method, a filter is arranged at an inlet of the hot air circulating oven, and a heater, a flow guide plate, an air door, an automatic conveying trolley and a main fan are arranged inside the hot air circulating oven. By recycling the organic solvent used in the PVC foaming process and removing the organic solvent remaining in foaming boards, the fire resistance of the foaming boards is guaranteed, and the problem that in present domestic PVC foaming board production processes, organic solvents are difficult to recycle and pollute the environment is solved.

The invention belongs to the technical field of ventilation equipment and discloses a centrifugal fan blade which comprises a centrifugal fan blade body, wherein the centrifugal fan blade body is composed of a diversion ring, an annular blade bottom plate, a hub and a fan blade; the fan blade is arranged between the diversion ring and the annular blade bottom plate; the hub is arranged in the diversion ring; a cylindrical plastic shaft hole sleeve is arranged on the hub; shaft hole sleeve supporting parts are arranged on the periphery of the cylindrical plastic shaft hole sleeve; and the fan blade is composed of an inner arc surface and an outer arc surface. According to the centrifugal fan blade disclosed by the invention, by using renewable polypropylene and polyethylene terephthalate as the main raw materials of the centrifugal fan blade, the centrifugal fan blade has the characteristics of sound absorption, heat and moisture resistance, stability in performance, flame retardance, fire protection and the like, and the using performance is ensured; with the arrangement of the inner arc surface and the outer arc surface of the fan blade, as the set air inlet angle is not larger than 10 degrees, and the set air outlet angle ranges from 25 degrees to 35 degrees, relative noise reduction is ensured when the centrifugal fan blade works; and in addition, the wind power is large, so that ventilation is facilitated.