181results about How to "Increase ejection speed" patented technology

The invention discloses a three-level acceleration type spiral plasma propulsion device. The three-level acceleration type spiral wave plasma propulsion device is characterized in that an antenna is connected with an RF (Radio Frequency) power source, the antenna and a discharge chamber are fixedly arranged in a sleeve, and an electromagnetic coil is fixedly arranged on the outer circumferential surface of the sleeve in a surrounding way; the rear part of the discharge chamber is provided with a rotating electric field ion acceleration system, and the rotating electric field ion acceleration system comprises four graphite electrodes which are uniformly and symmetrically arranged on the outer circumferential surface of the sleeve; the tail end of the rotating electric field ion acceleration system is provided with an electromagnetic spray pipe ion acceleration system, and the electromagnetic spray pipe ion acceleration system comprises a conical expanding spray pipe of which one end is connected with the tail part of the discharge chamber, and the electromagnetic coil. According to the three-level acceleration type spiral plasma propulsion device disclosed by the invention, the rotating electric field acceleration system is adopted for carrying out secondary acceleration on a plasma, acceleration is further carried out through the electromagnetic spray pipe, and a three-level acceleration effect is formed, thus the thrust is generated by efficiently accelerating ions, the work of a propulsor under high power can be realized, the reliable performance of high ion ejecting speed and high propulsion capacity can be realized, wide application prospect is obtained, and a high-performance power platform can be provided for future space technology development.

A spraying head assembly has a tubular body, a cap, an upper plug, a lower plug and a spring. The cap is attached to the body and has a spraying channel, a conical cavity and a spraying hole. The conical cavity is defined inside the cap and communicates with the spraying channel and the spraying hole. The upper plug is held in the body and comprises a spraying end, a connecting end, a head and shaft. The head has a recess communicating with the spraying channel having a conical bottom. Multiple passages are defined in the head and communicate with the recess. The lower plug is mounted movably in the chamber in the body and is connected to the upper plug using the spring. In this arrangement, a liquid supplied to the connecting end forms vortexes in the body to reduce particles of liquid nebulization and raise ejection speed and therefore distance.

Disclosed herein are a crustal core sampler, by which a crustal core sample can be cored in a state coated with a flow-able coating material free of any contamination, and a method of coring a core sample using this crustal core sampler. The crustal core sampler comprises a drilling mechanism and a barrel, wherein the barrel is equipped with a flow-able coating material-ejecting mechanism, and a columnar crustal core portion is coated with a flow-able coating material. Alternatively, the crustal core sampler is constructed by a drill pipe and an inner barrel, wherein the inner barrel is equipped with an inner barrel body, a core elevator, a channel-forming member for forming a flow-able coating material-running channel and flow-able coating material-ejecting openings, and a columnar crustal core portion is coated with a flow-able coating material.

The invention discloses an adherence air device for preventing high-temperature corrosion of a water cooling wall of a refuse burning boiler. The adherence air device comprises an adherence air box and an adherence air nozzle, wherein one end of the adherence air box is connected with the adherence air nozzle; the other end of the adherence air box is connected with an air pipe; the adherence air nozzle comprises a nozzle fin, a front baffle, a bottom baffle, a water cooling wall pipe and a water cooling wall fin; the front baffle is composed of an inlet baffle, a reducing baffle and an outlet baffle; a blowing slit is formed on the outlet baffle; and a water cooling wall slit is formed by taking down the water cooling wall fin between two corresponding adjacent water cooling wall pipes. The adherence air nozzle adopts a reducing design, smoke is sprayed out from one side of a main smoke direction, and the adherence air direction is the same as the axial direction of the water cooling wall pipe; and with an injection area, the device realizes stable and reliable formation, little flow resistance, long conveying distance and large protection range. The device does not need multi-layer arrangement, causes little influence on the burning heat transfer of the original boiler, and effectively solves the problem of high-temperature corrosion of the water cooling wall of the refuse burning boiler.

A fluid ejection device, a method and an operation method thereof are disclosed. The fluid ejection device comprises a substrate, a beam and an activation pad. The substrate has an orifice, and the beam comprises a fixed portion and a cantilever portion and is disposed over the substrate, wherein the cantilever portion is disposed over the orifice. Furthermore, the activation pad is disposed between the cantilever portion of the beam and the substrate. Because the fluid ejection device of the present invention is fabricated by using micro-electromechanical technology, and therefore it possible to obtain a fluid ejection device capable of ejecting the fluid from the orifice at a high-speed and also the quantity fluid ejected can be very small.

The invention relates to the technical field of clean energy, and discloses an integrated cleaning device capable of increasing the water spraying speed by using air pressure. The integrated cleaningdevice comprises a base, the upper end of the base is fixedly provided with a driving box, and the inner part of the driving box is rotatably connected with a rotating rod. According to the integratedcleaning device capable of increasing the water spraying speed by using the air pressure, a supporting plate is driven by a connecting pipe to move in a water storage tank, when the supporting platemoves downwards, an air bag is extruded, air in the air bag is extruded out, the air pressure in the water storage tank is increased, water is driven to move towards the supporting plate towards the connecting pipe and enter a water tank body in the supporting plate, the water moves downwards along with the supporting plate, the pressure is larger and larger, a movable block is driven to continuously move relatively, a connecting rod is matched to drive a limiting rod to move downwards, and therefore a connecting pipe opening can be opened, the water enters the inner part of a movable plate through the connecting pipe and can be sprayed out of a spray nozzle, and the effect of cleaning a heat collector body is achieved.

The invention relates to accurate-spraying superfine dry powder extinguishing equipment for an intelligent pipe rack. The accurate-spraying superfine dry powder extinguishing equipment includes a regulating mechanism, a mounting plate, a shell body and two guide mechanisms, the guide mechanisms include rotating mechanisms, guide plates and boosting mechanisms, and the rotating mechanisms include side plates, first motors, first driving shafts, sliding blocks and support rods; and the boosting mechanisms include driving assemblies, driving plates, two telescopic assemblies and a plurality of boosting assemblies, and the boosting assemblies include spray nozzles, air pipes, air cylinders, first pistons and clamping assemblies. According to the accurate-spraying superfine dry powder extinguishing equipment for the intelligent pipe rack, the rotating mechanisms can drive the guide plates to rotate to enable superfine dry powder to be sprayed out along channels formed by two guide plates, thereby reducing the influence of dry powder due to the wind force during fire disasters, not only that, high speed air is sprayed from the boosting mechanisms to accelerate the superfine dry powder, thereby further reducing the influence of the superfine dry powder due to the fire-heating air pressure, the accurate spraying of fire extinguishing equipment can be ensured, and a flame extinguishingability of equipment is enhanced.

The invention belongs to the technical field of carpet yarn processing, and in particular relates to special-shaped hollow PTT (polytrimethylene terephthalate) bulked yarn and a preparation method thereof, wherein the special-shaped hollow PTT bulked yarn comprises a carpet yarn body which is special-shaped hollow bulked yarn formed by PPT fiber after bulked deformation and processing; the linear density of the carpet yarn body is 1000dtex-2000dtex; and the single fiber of the special-shaped hollow bulked yarn has the cross sections of a three-leaf triangular outer ring and a triangular inner hole. The preparation method is that a spinneret plate with special-shaped spinneret holes is adopted, and the preparation is completed on a BCF (bulked continuous filament) spinning machine by a one-step method. The fiber hollow degree is 13%-18%, the carpet yarn with the same effect is prepared, the cost is lowered by more than 13%, and the special-shaped hollow PTT bulked yarn has favorable beneficial effects. By adopting the method, the preparation is completed by one step without increasing the spinning expense by utilizing the original spinning machine under the specific spinning condition, and the preparation method is simple, economic and practical.

A liquid-jet apparatus includes: a driving signal generating unit that generates a ejecting driving signal, which is a periodic signal having a plurality of pulse waveforms; a driving pulse generating unit that generates a driving pulse string for each unit region of a medium to be printed upon, on the basis of gray-scale data for the unit region, the ejecting driving signal, and information on whether the driving pulse string generated for a previous unit region includes a last pulse waveform or a pulse waveform immediately before the last pulse waveform in one cycle of the ejecting driving signal; and a control unit that drives the pressure changing unit on the basis of the driving pulse. In the liquid-jet apparatus, the one cycle of the ejecting driving signal corresponds to one unit region of the medium to be printed upon.

The invention relates to the technical field of agricultural machines, in particular to a micro-tiller convenient to clean. Compared with the prior art, the micro-tiller is provided with an extruding-type air injection device controlled by a cam, an air transmission pipe of the air injection device is divided into two secondary air transmission pipes inside a convertor, the secondary air transmission pipes penetrate out of the two sides of the convertor respectively, one ends, far away from the convertor, of the two secondary air transmission pipes are located in two second cavities respectively, rotary tilling wheels are fixedly connected on a first driving rod and a second driving rod, and a plurality of rotary tilling blades are arranged on the rotary tilling wheels, third cavities communicated with the second cavities are formed inside the rotary tilling wheels, fourth cavities communicated with the third cavities are formed inside the rotary tilling blades, and a plurality of air injection holes communicated with the fourth cavities are formed in the surfaces of the rotary tilling blades. By means of the micro-tiller convenient to clean, the problems that rotary tilling blades and rotary tilling wheels of an existing micro-tiller are easy to allow soil to drop out to pollute road surfaces and a conveying device in the conveying process, and cleaning is inconvenient are solved.

The invention relates to a movable unmanned aerial vehicle gas-liquid power ejection system, and relates to the technical field of unmanned aerial vehicle launching. According to the system, an ejection mode of an unmanned aerial vehicle is changed, reverse thrust generated from high-pressure water jetting is directly used as ejection power, an ejection speed is increased by means of pulleys, theenergy secondary conversion is avoided, the energy efficiency is high, the system structural composition is simple, the speed increasing ratio is large, the maneuvering flexibility is good, the problems of electromagnetic interference and the like are avoided, and the system can be widely applied to catapult-assisted take-off of -fixed-wing unmanned aerial vehicles of various types.

The invention provides a method for preparing a superfine spherical aluminum powder by high-pressure atomization. Firstly, under the protection of the mixed gas of nitrogen and helium, aluminum ingotsare heated and melted in a melting furnace to become aluminum liquid and warm is kept; then the obtained aluminum liquid is transported through an aluminum liquid catheter to an atomization chamber where the above mixed gas is used as the ambient gas, and meanwhile, the mixed gas is sprayed out through a tightly coupled gas atomization nozzle to atomize the aluminum liquid to form mist-like aluminum liquid droplets; then the liquid aluminum droplets are cooled and rapidly solidified under the cooling and protection of the ambient gas to form atomized aluminum powder; and then the mixed gas isused as a transmission medium, and the atomized aluminum powder is sent to a grading system for graded screening treatment to obtain the superfine spherical aluminum powders of different particle sizes. The method for preparing the superfine spherical aluminum powder by high-pressure atomization provided by the invention uses the mixed gas of nitrogen and helium as the atomization medium, and hasthe advantages of high atomization efficiency, high fine powder yield, uniform particle size distribution, good aluminum powder sphericity and uniform size.

The burning system of spark plug ignition room is used in igniting engine capable of burning several kinds of fuel. The burning system has one ignition room with one spark plug mounted, one fuel jet to jet the fuel beam directly into the ignition room to form thick inflammable mixed gas around the electrode of the spark plug for easy ignition and thin inflammable mixed gas outside the ignition room, so as to make the burning system ignited reliably and burnt completely. The engine has raised efficiency, improved exhaust performance, and lowered fuel consumption. Under high load, the fast flame jetting avoids detonation and decreases noise.

The invention discloses a steam catapult with parallel, series and separation functions. The steam catapult comprises a shell, an air storage tank and an ejection unit. The ejection unit comprises a desk, a sliding block tunnel, a sliding block, a low-pressure cavity shell, a tunnel pipe, a cylinder, piston sleeves, a tapered frame and stamping water cylinders. The in-out flow of the front and rear single-double three stamping water cylinders are controlled by three step control valves separately, one-way valves and a switch valve are installed in pistons, the pistons are divided into two parts including pistons I and pistons II, the pistons I and the pistons II are fastened by bolts separately, and sliding ways and piston sleeves, corresponding to the sides of the pistons I, are composedof sleeve fame beams and are connected with tapered frame hollow columns and penetrate out of front covers to be connected with bearing beams. When the weight of a carrier is specified, the steam catapult can calculate the exact movement value of corresponding parts, pull rods are arranged at the centers the end faces of the pistons II, and the pistons II are internally provided with shaft cores and shaft core pistons for common use of ejection and back stroke. The steam catapult with the parallel, series and separation functions has flexible operation, reliable performance, high speed, high efficiency and good air tightness, and the heat utilization rate is improved.