30results about How to "Fast air flow" patented technology

The invention discloses a double-tangential-circle two-section-type dry pulverized coal gasifying furnace and a gasifying method thereof. A plurality of first section burners are uniformly arranged onthe wall surface of a first section reaction chamber, the first section burners are communicated with the first section reaction chamber, the center of the first section reaction chamber is correspondingly provided with a first imaginary circle, the central lines of all of the first section burners are tangent to the first imaginary circle, and first imaginary circles which are formed by the jetted out air flows of the first section burners are rotated in the same direction; a plurality of second section burners are uniformly arranged on the wall surface of a second section reaction chamber,the second section burners are communicated with the second section reaction chamber, the center of the second section reaction chamber is correspondingly provided with a second imaginary circle, thecentral lines of all of the second section burners are tangent to the second imaginary circle, and the rotary directions of second imaginary circles which are formed by the jetted out air flows of thesecond section burners are opposite to the rotary directions of the first imaginary circles. By means of the furnace and the method, a more uniform furnace inner flow field and higher slag capturingrate and carbon converting rate can be obtained.

The invention provides an unmanned aerial vehicle for pesticide spraying and relates to the technical field of air vehicles. The unmanned aerial vehicle for pesticide spraying aims to solve the problems that existing unmanned aerial vehicles for pesticide spraying are poor in bearing capacity, poor in stability and the like. The unmanned aerial vehicle for pesticide spraying comprises an airframe,a main rotor arranged on the top of the airframe, and an undercarriage arranged at the bottom of the airframe. Frames of the undercarriage are provided with pesticide boxes and spraying devices. A first lifting wing is arranged between the two frames, the first lifting wing is in the shape of a dish raised towards the direction of the airframe, and buffer damping elements are connected between the first lifting wing and the airframe. According to the unmanned aerial vehicle for pesticide spraying, due to the facts that both the pesticide boxes and the spraying devices are arranged on the undercarriage and the buffer damping elements are arranged between the undercarriage and the airframe, influences of shock of the airframe on the pesticide boxes can be effectively reduced, and the stability can be improved; by the adoption of the first lifting wing, the bearing capacity of the unmanned aerial vehicle can be greatly improved, and the spraying efficiency of the unmanned aerial vehiclecan be improved..

The invention relates to a ventilation circulation system of a comprehensive sealed machine room, which includes a wiring compartment, a battery compartment and an equipment compartment. The airflow in the cabinet is self-circulating, which has the advantage of energy saving. The three exhaust fans set respectively realize the air convection inside and outside the cabinet, and the air convection between the compartments in the cabinet. The equipment is realized through the partition A and partition B. The isolation of warehouse, battery warehouse and wiring warehouse has the advantages of good ventilation effect and energy saving; the present invention adopts a ventilation and circulation system of a comprehensive sealed machine room composed of internal circulation of temperature adjustment device, external ventilation fan and internal air circulation fan, which has the advantages of It has the advantages of energy saving, good ventilation effect, low cost, reliable performance and stable work.

The invention provides a preparation method and a growth device of an N-type silicon carbide crystal. The method comprises the following steps: (1) placing a raw material in a high-temperature area of a crucible, placing a seed crystal in a low-temperature area of the crucible, recessing the outer wall of the top of the crucible inwards to form an annular gas groove, placing the assembled crucible in a furnace body of a crystal growth furnace, and enabling the annular air groove to be close to a vent hole of the furnace body; and (2) in a crystal growth stage, introducing nitrogen source gas into the furnace body through the vent hole, controlling crystal growth temperature and crystal growth pressure, and enabling the N-type silicon carbide crystal to grow on the seed crystal. The annular gas groove is close to the vent hole of the furnace body, the introduced gas can flow along the annular gas groove, a gas flow speed is high, the gas is diffused into the crucible, heat transmission away from the central axis in the crucible is accelerated, the radial temperature gradient of the crucible is reduced, and crystal growth quality is improved.

The invention provides a shoe drying rack changing drying state based on wind speed. The shoe drying rack comprises a vertical support frame and a shoe frame, the right side of the vertical support frame is fixedly connected with a coil spring, The right side of the vertical support frame is movably connected with a transverse frame, the transverse frame is positioned above the coil spring, the bottom of the transverse frame is fixedly connected with a T-shaped swing bar, the transverse part of the T-shaped swing bar extends to the inside of the coil spring, and the right end of the bottom ofthe transverse frame is fixedly connected with the upright frame. The shoe drying rack changing the drying state based on the wind speed, As that cross frame is subject to an external force, the crossbar swings, the horizontal frame drives the T-shaped swing bar to swing inside the coil spring, The T-shaped swing lever is periodically swung, and the helical spring supports the T-shaped swing lever, which limits the displacement of the T-shaped swing lever, and the T-shaped swing lever drives the horizontal frame to swing, and the horizontal frame drives the shoe frame to swing, so that the airvelocity around the shoe inside the shoe frame is fast, thereby facilitating the drying of the shoe.

The invention discloses a cutting machine having the dust removal function. The cutting machine comprises a table body. A motor box is fixedly mounted inside the table body. A motor is fixedly mountedinside the motor box. An output shaft of the motor penetrates the motor box. A cutting blade is fixedly connected to the end, exposed out of the motor box, of the output shaft of the motor and is intransmission connection with a fan inside a dust suction box through a transmission device. The dust suction box is connected to one side of the table body in a clamped manner, and a filter pipe is arranged at the other side of the dust suction box. The cutting machine is provided with the fan, and air with dust can move into a dust collection box in the cutting process; by means of a filter screen, particles floating in the air can be filtered out; by means of conducting wires and conducting plates, metal chippings mixed with the air can be adsorbed; by means of a filter tip, tiny dust in theair can be filtered out, and the dust removal effect is achieved; and the problem that the dust and the metal chippings entering the air are harmful to health of human bodies is solved.

The invention relates to the technical field of medical equipment, in particular to subtle link observation equipment for X-ray image examination for the neurology department, which comprises a wearable component, the wearable component comprises a head hoop, binding strips are uniformly fixed at the edge of the top of the head hoop at equal intervals, and a cylinder is fixedly mounted at one end of the top of each binding strip. A storage battery is fixedly installed on the outer wall of the cylinder, a control panel is fixedly installed on the outer wall of the side face of the cylinder, a supporting assembly is installed on the outer wall of the right side of the head hoop, and the supporting assembly comprises a fixing rod. Through arrangement of the wearing assembly and connection of the supporting assembly, the backlight assembly can be directly worn on the head of a doctor through the wearing assembly, the doctor can conveniently observe a film anytime and anywhere, and through arrangement of threaded engagement driving between a threaded sleeve and a threaded rod, the device is convenient to adjust; and the use convenience and flexibility of the device are greatly improved.

The invention relates to a high efficiency hardening furnace for resin grinding wheels. The high efficiency hardening furnace is provided with a hardening furnace body; an electric heating wire is arranged on the inner wall of the hardening furnace body; a two-side-opening furnace door is arranged on the front side wall of the hardening furnace body; a controller is arranged on the outer wall of the hardening furnace body; a track is arranged at the bottom in the hardening furnace body; the track is convenient for transporting the grinding wheels in and out; the top of the hardening furnace body is vertically provided with two upright exhaust pipelines side by side, and a horizontal exhaust pipeline is connected with the two upright exhaust pipelines; the horizontal exhaust pipeline is separately connected with the two upright exhaust pipelines by means of a circular arc-shaped pipe; the middle part of the horizontal exhaust pipeline is provided with a gas filtering device; an air guiding duct is connected with the position, which is at the outer side of the gas filtering device, of the horizontal exhaust pipeline; the air guiding duct is connected with an induced draft fan. The high efficiency hardening furnace for the resin grinding wheels is simple and practical in structural improvement, good in treatment effect of exhausted gas and rapid in hardening speed, thus having very good actual use and popularization values.

The invention is suitable for the field of remote education equipment, and provides a remote education training management device based on the Internet of Things, which comprises a mainframe box with a mainboard mounted on one side in the mainframe box; a heat dissipation ventilation opening on the same side of the mainboard is formed in the mainframe box; the first moving part is arranged on the mainframe box; the first moving part is used for adjusting the position of the movable seat; the second moving part is arranged on the mainframe box; the second moving part is used for adjusting the position of the movable seat; a cooling fan is arranged on the movable seat through a damping shaft in a supporting manner, and a linkage through hole is formed in the movable seat; a first gear linked with the damping shaft is also arranged in the movable seat; the second moving part comprises a telescopic rack matched with the linkage through hole, and the telescopic rack stretching into the linkage through hole is meshed with the first gear. According to the remote education device, the mainboard can be effectively cooled, and the problem that excessive heat is accumulated on the mainboard in the remote education device due to long-time working of remote education management is solved.

The invention belongs to the field of coal mill equipment, particularly relates to a pulverized coal conveying quantity control system for a steel ball mill, and the pulverized coal conveying quantity control system is used for controlling the pulverized coal flow rate in a plurality of pulverized coal conveying pipelines connected to a pulverized coal mother pipe. The steel ball mill coal quantity conveying control system comprises a plurality of connection seats, a plurality of fixing covers and rotating shafts; the plurality of connection seats are symmetrically and fixedly connected to the side wall of the pulverized coal mother pipe, one end of each connection seat communicates with the inner side of the pulverized coal mother pipe, and an opening in the other end of each connection seat is provided with a connection edge; the end of each fixing cover is connected with the connection edge on the opening of the corresponding connection seat; two rotating shafts are rotatably assembled between the two sides walls of each fixing cover, the rotating shafts are perpendicular to the axis of the pulverized coal mother pipe, the rotating shafts are fixedly connected with baffles, at least one ends of the rotating shafts stretch out of the outer sides of the side walls of the fixing covers, and the stretching-out ends of the rotating shafts are fixedly connected with shifting pieces. The pulverized coal conveying quantity control system is simple in structure, convenient to operate and capable of reducing the deviation of the pulverized coal conveying quantity of all the pulverized coal conveying pipes and reducing the deviation of heat provided by all combustors.

The invention relates to an air-blowing dehumidification breathable sole which comprises a sole base and a sole plate stacked on the sole base, a groove is formed in the middle of the upper end of the sole base, a plurality of drainage grooves are distributed around the groove, the drainage grooves obliquely extend downwards from the shoe edge to be communicated with the groove, and a plurality of draining holes are formed in the bottom of the groove. Containing cavities are formed in the foot sole portion and the heel portion of the shoe sole base, air bags are installed in the containing cavities, and each air bag is provided with an air inlet pipe communicated with the outside and a plurality of exhaust pipes communicated with the grooves. According to the breathable shoe, the groove is formed in the middle of the upper end of the sole base, the drainage grooves are distributed around the groove, the air bags are arranged in the foot sole part and the heel part of the sole base, the air bags of the foot sole part and the air bags of the heel part blow air to the groove alternately, and blown air flow is aligned to the sole plate along the drainage grooves for dehumidification; the double air bags blow air alternately, so that air in the shoe sole flows fast, the draining efficiency is high, and the blowing dehumidification effect is good.

The invention relates to the technical field of machining, and discloses lifting equipment with high safety coefficient for high-precision machining. The lifting equipment comprises an equipment shell and a lifting workbench, wherein a mounting shell is fixedly connected to the interior of the equipment shell, a limiting plate is fixedly connected to the interior of the mounting shell, and a rotating main shaft is movably connected to the interior of the limiting plate; and the outer side of the rotating main shaft is fixedly connected with a movable induction mechanism. According to the lifting equipment with the high safety coefficient for high-precision machining, when the moving speed of a movable support is increased due to stall in the lifting process of the lifting workbench, the rotating speed of the rotating main shaft is increased, a flexible plate is closer, and after the corresponding area between a positive plate and a negative plate is increased to reach the working voltage of a piezoresistor, a circuit is communicated to enable an alarm to give alarm prompt, meanwhile, an external electric field is connected, a magnetostriction shaft extends, and the magnetostriction shaft is inserted between connecting supporting rods after extending, so that the lifting workbench is assisted to stop, and the safety coefficient is improved.

The invention relates to the technical field of alloy steel machining, in particular to a hot rolled alloy steel flaw detection device which comprises a base and a supersonic flaw detector. A first supporting plate, a second supporting plate and a supporting rod are arranged on the upper end surface of the base, the first supporting plate and the second supporting plate are positioned on the sameplane, the supporting rod is arranged between the first supporting plate and the second supporting plate, two first hollow driving discs are arranged on the first supporting plate, a gap is formed between the first driving discs, first through holes are uniformly distributed on the side walls of the first driving discs, and first through hole adjusting mechanisms are arranged in the first drivingdiscs. When the device is used, impurities on the alloy steel can be effectively removed, and the alloy steel is conveniently detected by the supersonic flaw detector.

The invention proposes a novel motor cooling fan blade structure, which includes a main body and a circular shaft, the main body is installed on the circular shaft, and a circular hole and a grille are arranged on the main body. The invention has the characteristics of simple structure, material saving, good use effect, etc., and has broad use value.

The invention provides a solar dryer hood device of a high-speed reverse-net multi-roll drying special paper-making machine. The solar dryer hood device comprises a dryer hood 351, a solar heating assembly 352, a hot water storage tank 353 and a temperature-controlled electrically-auxiliary self-heating assembly 354. According to the solar dryer hood device, a blanket drying baby dryer 337 is used for discharging condensated water at the temperature of about 65 DEG C, the solar heating assembly 352 is used for heating the condensated water, after being heated to about 90 DEG C by the solar power assembly, the water is injected into the hot water storage tank 353, the hot water storage tank 353 injects the hot water into the interlayer of the dryer hood 351, when the temperature of the hot water is below 70 DEG C, the temperature-controlled electrically-auxiliary self-heating assembly 354 automatically heats the hot water in the interlayer of the dryer hood 351, because the temperature difference is small, the heating speed is rapid, the energy consumption is extremely low, and the power consumption is quite small even in overcast and rainy weather; and fresh steam is not used in the dryer hood 351, the safety problem is solved, and the safety of life and property of operating personnel can be greatly protected.

The invention discloses an instrument for exploring the relationship between pressure and a flow rate. The instrument for exploring the relationship between the pressure and the flow rate is characterized by being a plastic pipe with the length of 1m to 3m. A mesh bag is bound at the tail end of the plastic pipe. A balancing weight is further bound at the tail end of the plastic pipe. A pulling rope is tied on the balancing block. After the structure is adopted, one side of the plastic pipe is held by one hand so as to enable an opening of the plastic pipe to be close to light and small objects such as paper scraps and unaerated balloons which are arranged on a tabletop, the other hand holds the other side of the plastic pipe and rapidly shakes the plastic pipe, and due to the facts that the air flow rate at the position of the opening of the plastic pipe is high and the pressure at the position of the opening of the plastic pipe is small, the light and small objects are sucked into the pipe, move and are collected to the mesh bag. The instrument for exploring the relationship between the pressure and the flow rate has the advantages that visibility is large by shaking the plastic pipe for a test, and interests of students are high; due to the facts that the pipe is longer and the balancing weight is further arranged, shaking is fast, an effect is good, and a test success rate is high; even if the superficial area of one unaerated balloon is larger than the cross-sectional area of the pipe, the balloon can successfully enter the mesh bag; the instrument is simple in structure, low in cost, remarkable in effect and easy to popularize.