64results about How to "Increase exhaust velocity" patented technology

The invention relates to a petrol engine with turbo charging, which comprises a cylinder body, a cylinder sleeve, an intake valve, a spark plug hole, an exhaust valve, a combustion chamber, a crankshaft, a connecting rod, a piston, an intake manifold, an exhaust manifold and a turbo charging device. The petrol engine also comprises a twin cam shaft valve timing adjusting structure arranged above a cylinder head; the twin cam shaft valve timing adjusting structure ensures that an admission cam shaft and an exhaust cam shaft is in transmission connection with the crankshaft through a timing chain; and the twin cam shaft valve timing adjusting structure is used for continuously and changeably adjusting the opening times of the intake valve and the exhaust valve of the combustion chamber, therefore, the fuel utilization and the rotation speed and the output power of the engine can be improved. The turbo charging device can increase the intake pressure of the engine, and quicken the combustion of the fuel of the engine, so as to enable the combustion to be more sufficient, therefore, the output power of the engine is improved, and the exhaust emissions are reduced. A three-way catalysis device is arranged on the exhaust manifold, therefore, the harmful gas emissions can be reduced.

The invention discloses an asynchronous air-sweeping type flexible bionic retractable standing grain moving device. According to the device, a machine frame is located outside, bionic standing grain moving mechanisms are evenly distributed outside the machine frame in the radial direction, a fan mechanism is located inside the machine frame, a transmission mechanism is located at the left end of the machine frame, threaded holes are distributed in a base of the machine frame, each bionic standing grain moving mechanism is formed by a positioning bolt, a spring and a bionic standing grain moving plate, stretching and retracting of the bionic standing grain moving mechanisms are achieved through the springs, an air inlet is formed in front of a fan cover, an air outlet is formed behind the fan cover, a fan belt wheel is fixed on the left half axle through a flat key, a standing grain moving belt wheel is mounted on the outer ring of a bearing and is connected with a left baffle through a long bolt, and then the bionic standing grain moving mechanisms and the fan mechanism can rotate coaxially at different speeds. The device has the advantages that stand grain moving contact impact is small, the stand grain moving height and feeding depth are continuously adjustable, loss of grains of crops is small during stand grain moving, damage to the surfaces of the grains of crops is small, the structure is simple and compact, and overall efficiency of stand grain moving operation is high.

The invention discloses a preparation method of a nanometer microporous thermal insulation material. A component of the nanometer microporous thermal insulation material comprises nano silica, an infrared opacifying agent, a refractory body, and ceramic fiber; average particle size of the component ranges from 15 to 50nm; and bulk density ranges from 40 to 60kg/m<3>. According to the preparation method, the raw materials above are mixed uniformly, and are subjected to dry-pressing moulding; in moulding processes, through small holes arranged on the bottom of a die and the plane of a puncher pin are used for air exhaust, and a screen mesh is used for covering the through small holes so as to avoid escaping of nano powder; the puncher pin and the bottom plate of the die are moved downward and upward respectively at a same speed so as to avoid density nonuniformity caused by frictional force when powder compression ratio is too high; double-surface pressing and moderate overpressure are adopted so as to avoid bounce error and control product thickness; and sheet material obtained via dry-pressing is subjected to sintering at a temperature of 800 DEG C, and furnace cooling.

The invention provides an oil-electricity hybrid multi-energy horizontally-opposed inner air cooling direct-axis high-speed engine which comprises transmission assemblies. The transmission assemblies are mounted in a spindle box. Gas cylinder assemblies are mounted on the two sides of the spindle box. The gas cylinder assemblies are mounted on the spindle box in a horizontally-opposed manner. The gas cylinder assemblies serve as power components of the transmission assemblies to be connected with the transmission assemblies. A left-and-right spindle is arranged in the middle of the spindle box. The spindle is connected with split shafts through an output gear. Each split shaft is connected with a clutch through a transmission chain. A speed change device is mounted at the rear end of each clutch. The rear ends of the speed change devices are connected with the transmission assemblies. Through advanced timing of the engine, gas distribution and oil supply can be controlled at the same time, and the advanced timing ignition time can be automatically adjusted according to the rotating speed of the engine; and secondary supercharging oil inlet and secondary exhaust are adopted in the engine, the gas cylinder cooling and exhaust speed is increased, and the engine can adapt to multiple kinds of new energy without any modification.

A cleaning system for controlling indoor harmful substances comprising a housing containing a controlling device to operate the cleaning system; an atomization device atomizing the cleaning liquid; and an air circulation device generating vortex flow to carry the atomized cleaning liquid for indoor circulation, wherein the counterforce of the vortex flow is sent to the inlet of the air circulation device. The cleaning system for controlling harmful substance in the present invention provides multiple advantages which can effectively incorporate large-areal disinfection, sterilization and sterilization by comprehensively transferring the atomized leaning liquid to every corner of the space through the air circulation device and improve the cleaning effectiveness. Meanwhile, the cleaning system in the present invention can be arranged with a remote controlling device so that users can focus on cleaning the local infected area without directly contacting the infected areas so as to reduce the risk of exposing users to the infected space.

The invention relates to the technical field of lost foam casting, in particular to duplex method lost foam aluminum casting equipment which comprises a base; a supporting plate is fixedly connected to the position, close to the left end, of the outer surface of the upper end of the base; a supporting table is fixedly connected to the position, close to the upper end, of the outer surface of the right end of the supporting plate; and the outer surface of the lower end of the supporting table is fixedly connected with a driving mechanism. The device structure can press and flatten quartz sand, so that the quartz sand makes contact with a casting model more tightly, and the quality of a casting finished product is improved; and besides, a better sealing effect can be provided for a sand box, the sand box is matched with a vacuumizing pipe to work, a good vacuum effect can be achieved in the sand box, the mold filling capacity is improved, and carbon black defects on the surface of a casting can be reduced; quartz sand and the casting in the sand box can be automatically poured out, so that the working efficiency is greatly improved; and multiple functions of casting, pouring out, filtering and collecting can be achieved, so that a large amount of manpower and material resources are saved; and the structure is simple and practicability is high.

The invention discloses a mold core with an ultrasonic vibration device. The mold core is characterized in that the mold core comprises a mold core mechanism, an exhaust mechanism, a transducer cooling mechanism and a channel mechanism; according to the mold core mechanism, the mold core is provided with a mold core hole, a mold core head and a mold core rod are arranged in the mold core hole, hole channels for measuring temperature wire are arranged in the mold core head and the mold core rod, thermocouples for measuring temperature is arranged in the top end of the hole channel, the exhaustmechanism is arranged on the opposite side of the mold core head and on the outer surface of the mold core rod, the transducer cooling mechanism is arranged on the lower part of the mold core rod; andan ultrasonic transducer is arranged on the lower end of the mold core rod. According to the mold core with the ultrasonic vibration device, the ultrasonic vibration device fixed in the lower mold ofa metal mold is adopted so that aluminum liquid being injected is subjected ultrasonic vibration, so that the filling and forming are accelerated, the orderly exhaust speed is accelerated at the sametime, the forming quality of products is improved, the mold core is cooled automatically and rapidly, the air cooling process of manual operation is omitted, and the product quality and output are improved.

The invention relates to a reciprocating compressor which comprises an air cylinder and pistons. The air cylinder comprises a cylinder body, an air cylinder inner cavity is formed in the cylinder body, and the pistons are located in the air cylinder inner cavity and can slide along the cavity wall of the air cylinder inner cavity. The pistons comprise the first piston and the second piston, and the first piston and the second piston can slide in the direction close to each other and the direction far away from each other in a reciprocating manner at the same time. According to the reciprocating compressor, the two pistons are arranged on the single air cylinder, and the two pistons move oppositely or reversely at the same time, so that the stroke of the pistons can be effectively enlarged under the condition of guaranteeing certain motion frequency of the piston. Therefore, on the basis of a certain clearance volume, the effective air suction volume can be increased, so that the volume efficiency of the air cylinder is increased, and adverse effects of the clearance volume are reduced.

The invention discloses a compressive sealing device for piston and cylinder sealing. The compressive sealing device is formed by combination of inner bushings, outer bushings, a sealing gas ring anda sealing oil ring; the inner bushings and the outer bushings are embedded each other to form sealing bushings; each sealing bushing is a cylinder with holes in the middle; the sealing gas ring and the sealing oil ring are installed in a cavity of the cylinder; by means of an inward compressive force, inner diameters of the sealing rings are tightly attached to the outer diameter of a piston to achieve sealing; two sides of the cylinder are each provided with a piston sliding sleeve; when the piston does reciprocating motion, the outer diameter of the piston only slides in inner diameters of the piston sliding sleeves; with the coordinated use of the two sealing bushings, a gas inlet unit can be arranged on the piston to complete gas intake alone, and exhaust is completed separately from acylinder head, and thus, the gas intake velocity and the exhaust velocity are accelerated and directions of gas flowing are consistent, and the gas flowing is more smooth.