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

The invention relates to a production process of ultrathin-wall and leakage-free aviation aluminium alloy castings. The production process is characterized by comprising the following steps of: manufacturing a pressure-casting mould, machining a double circular ingate, a pressure-casting inlet and a distribution pouring gate on a right mould of the pressure-casting mould; machining a T-shaped exhaust groove on a left mould of the pressure-casting mould, pouring, lightly pressing, strongly pressing and demoulding; and finally carrying out infiltration process treatment. The special pressure-casting mould of the ultrathin-wall and leakage-free aviation aluminium alloy castings adopts a double circular feeding structure and a T-shaped exhaust groove structure, wherein the double circular feeding structure ensures that aluminium liquid fast enters a cavity in the pressure casting process and the thin wall of a part is partially filled; and the T-shaped exhaust groove structure ensures the exhaust of the cavity during the fast filling of the aluminium liquid and prevents the castings from carrying gas. The infiltration process of the invention improves the air impermeability of the product and enables the part to have an inflaming retarding function in addition, and the infiltration is finished through carrying out the work procedures of cleaning with hot water, drying, infiltrating and baking on the castings.

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 relates to the technical field of pneumatic control of mechanical equipment, in particular to a pneumatic device with a quick exhaust function. The pneumatic device with the quick exhaust function comprises an air conditioning unit, a major loop electromagnetic valve, a first speed control valve, a second speed control valve and a pneumatic element, wherein the air conditioning unit, the first speed control valve and the second speed control valve are all connected with the major loop electromagnetic valve, the first speed control valve and the second speed control valve are connected with a first connecting hole of the pneumatic element and a second connecting hole of the pneumatic element respectively, an exhaust speed control valve is connected between the second connecting hole and the second speed control valve, and the exhaust speed control valve is connected with an exhaust electromagnetic valve. Through the arrangement of the exhaust speed control valve and the exhaust electromagnetic valve, a quick exhaust loop is added on the basis of an exhaust loop, and the exhaust speed of compressed air is largely improved. Due to the arrangement of the major loop electromagnetic valve, the opening and the shut of the additionally arranged quick exhaust loop can be directly controlled, the response speed and the operation speed of the pneumatic element are further improved, and production efficiency of pneumatic equipment is improved.

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 die casting mould special for an ultrathin-wall non-leakage aviation aluminium alloy element, comprising a right mould (1), a left mould (8) and a die casting inlet (4). The die casting mould is characterized in that the right mould (1) mainly comprises a fixed mould frame (10) and a fixed mould insert (11) embedded in the fixed mould frame (10); the die casting inlet (4) is arranged on the fixed mould frame (10); the fixed mould insert (11) is internally provided with a die cavity (112) in which a fixed mould insert body (12) is arranged; and the left mould (8) mainly comprises a movable mould frame (80) and a movable mould insert (81) embedded in the movable mould frame (80). The die casting mould special for the ultrathin-wall non-leakage aviation aluminium alloy element adopts a dual annular feeding structure and a T-shaped vent channel structure; the dual annular feeding structure ensures that aluminium liquid rapidly enters into the die cavity in the die casting process, thereby ensuring that the thin-wall part of the element is filled fully; and the T-shaped vent channel structure ensures the gas exhaust of the die cavity under the condition that the aluminium liquid is rapidly filled, thereby preventing the gasenclosure of a casting.

The invention relates to an expansion-ratio-variable silencing post-processor and a vehicle using the same. The expansion-ratio-variable silencing post-processor comprises a cylinder body with a frontcover and a rear cover, the cylinder body is internally provided with an expansion cavity, the rear cover is provided with exhaust pipes communicating with the expansion cavity, the diameter of the exhaust pipes is smaller than the diameter of the expansion cavity, the two or more exhaust pipes are arranged, the cylinder body is further provided with a control valve for controlling at least one exhaust pipe to be opened or closed so as to adjust the expansion ratio between the exhaust pipes and the expansion cavity, the number of opened and closed exhaust pipes is controlled to enable the silencing post-processor to balance exhaust noise of various rotating speed working conditions, then the exhaust noise under various rotating speed working conditions reaches a lower level, and the purpose of enabling the exhaust noise to be reduced while various rotating speeds are considered is achieved.

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.

A sputter ion pump comprises a metal pump container. In the pump container are arranged a cathode and an anode opposed to each other in the pump container and a permanent magnet situated between the cathode and the inner surface of the pump container. After locating the anode, cathode, and magnetic material in the pump container, the magnetic material is magnetized from outside the pump container, thereby forming the permanent magnet.

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 discloses a vortex pump with a separation net for enhancing self-absorption. The vortex pump comprises a vortex pump body and the separation net. The separation net is arranged in a gas-liquid separation chamber with the set angle A and the set area S. The separation net conducts effective gas-liquid separation on gas and liquid two-phase flow, flowing back to the area near an impeller, in the gas-liquid separation chamber, and meanwhile rectification, deceleration and pressurization are conducted on backflow fluid. The separation net in the vortex pump can enhance gas-liquid separation in the gas-liquid separation chamber, bubble floating is accelerated, descending of bubbles along with downward fluid is relieved, and the exhaust efficiency and the exhaust speed of limited space of the gas-liquid separation chamber are greatly improved; through isolation and separation of bubbles at the upper position in the gas-liquid separation chamber, it is ensured that the gas content of fluid flowing back to a water absorbing chamber along with rotation of the impeller is lower, higher momentum and pressure potential energy are achieved, and the mixing volume rate and the mixing speed for gas in a pipeline at an inlet section of the pump in the water absorbing chamber are improved.

The invention discloses an electromagnetic valve. The electromagnetic valve comprises a valve body, valve seats and coil assemblies, wherein valve cavities are arranged in the valve body; air inlets and control ports are formed in the valve seats; first through holes for communicating the air inlets with the valve cavities and second through holes for communicating the valve cavities with outside are formed in the valve body; each coil assembly comprises a movable iron core, a sealing plug is inlaid to the movable iron core, the upper end surface of the sealing plug is in tight fit with the corresponding first through hole under the driving of the movable iron core, the lower end surface of the sealing plug is in tight fit with the corresponding second through hole under the driving of the movable iron core, non-return diaphragms matched with the corresponding first through holes are arranged in the corresponding valve cavities, and when sudden dropping disturbance of air pressure in the air inlets occurs relative to air pressure in the valve cavities, the non-return diaphragms are tightly attached to the corresponding first through holes under the action of pressure difference, so that air pressure stability of the control ports is guaranteed. The electromagnetic valve has the characteristics as follows: pressure of output work gas is stable, gas pressure attenuation is lower, intake and exhaust speeds are high, a terminal is simple to process and manufacture, and the protective performance is good.

The invention discloses a jetting type centrifugal pump with a separation mesh for enhancing self sucking. The jetting type centrifugal pump with the separation mesh for enhancing self sucking comprises a jetting type centrifugal pump body and the separation mesh; the separation mesh is arranged in a gas-liquid separation chamber and located between an inlet of a backflow flow channel and an outlet of a centrifugal vortex chamber; at a certain relative spatial attitude and a certain flow intercepting area, gas-liquid two phase flow flowing back to the inlet of the backflow flow channel from the interior of the gas-liquid separation chamber is subjected to effective gas-liquid separation; meanwhile, the separation mesh is used for rectifying fluid, with very high kinetic energy, jetted outof an original centrifugal outlet in the gas-liquid separation chamber; and speed reducing and pressurizing are performed, the pressure potential energy of the backflow fluid and the overall uniformity of flowing in the separation chamber are improved, the gas containing rate of the backflow fluid flowing back to a nozzle of a jetting device through the backflow flow channel is remarkably reduced,the speeds of gas-liquid mixing and gas-liquid separation are increased at the same time, and the self-sucking capacity of the jetting type self-sucking centrifugal pump body is remarkably improved.

The invention relates to an air inlet and outlet structure of a food processor. The air inlet and outlet structure of the food processor comprises a main machine assembly. The main machine assembly comprises a housing component and a motor. The outer top of the housing component is provided with a first transmission connector. The motor is installed in the housing component, and is in the transmission connection with the first transmission connector. The motor is further in the transmission connection with a fan. The housing component is internally provided with an air channel. The motor and the fan are installed in the air channel. The air channel is provided with an air inlet cavity and an air outlet cavity which are mutually communicated. The periphery of the lower part of the housing component is provided with an air inlet and an air outlet. The air inlet is communicated with the air inlet cavity, and the air outlet is communicated with the air outlet cavity. The air inlet and theair outlet of the air inlet and outlet structure of the food processor are installed at the periphery of the lower end of the housing component, so the air exhausting speed is increased, the area of an airflow channel is reduced, the air flow of the whole machine is reinforced, and the heat dissipation effect is improved. The noise of the motor is greatly reduced because the air exhausting speed is rapid.

A dual-radiating structure of an electric oven comprises an oven lining and an oven housing; the oven housing covers the oven lining; the oven lining is in spaced fit with the oven housing, and a radiating gap is formed between the oven lining and the oven housing; an insulation layer is arranged between the oven lining and the oven housing; the radiating gap is divided into a high-temperature zone and a low-temperature zone through the insulation layer; a cooling fan is arranged in the radiating gap; the back, side and / or top and / or top of the oven housing are provided with a plurality of vent holes communicated with the radiating gap; the high-temperature zone and the low-temperature zone are communicated with the vent holes in the back of the oven housing. When the cooling fan operates,external air is sucked into the radiating gap via corresponding vent holes in the oven housing; wind generated by the cooling fan is divided by the insulation layer to flow respectively into the high-temperature zone and the low-temperature zone, and the wind is discharged at least via the vent holes in the back of the oven housing. The dual-radiating structure is simple and reasonable in structure, low in manufacture cost and good in heat-radiating and cooling effect, enables oven core temperature to be ensured to ensure cooking effect, and has good market competitiveness.

The invention discloses a primary air system pipeline device convenient to mount. The device comprises an exhaust assembly and an air inlet assembly; the exhaust assembly comprises an exhaust pipeline, a first-stage exhaust fan, a noise reduction air guide cylinder A and an exhaust rough obstruction net; the air inlet assembly comprises an air inlet pipeline, a first-stage exhaust fan, a noise reduction air guide cylinder B and an air inlet fine obstruction net; according to the beneficial effects, a passing opening is formed in the building wall, the first-stage exhaust fan, the noise reduction air guide cylinder A and the exhaust rough obstruction net are assembled to the exhaust pipeline, the first-stage exhaust fan, the noise reduction air guide cylinder B and the air inlet fine obstruction net are assembled to the air inlet pipeline, the exhaust pipeline is inserted into the building wall passing opening, the air inlet pipeline is inserted into the building wall passing opening, the device is rapid and convenient to mount, the noise reduction air guide cylinder A and the noise reduction air guide cylinder B have a certain rain sheltering effect, the noise reduction effect andthe air guide effect, flying birds can be effectively prevented from inhabiting, objects like fallen leaves outside the building wall can be effectively obstructed from floating in, and the device ishigh in practicability and good in use effect.

The invention relates to the technical field of distillation kettles, in particular to a toluene distillation kettle. The toluene distillation kettle comprises a panel body, mounting blocks, light source plates, heat dissipation devices, fixing devices and clamping mechanisms. The mounting blocks are inserted into the two sides of the panel body, the heat dissipation devices are arranged in the mounting blocks, the light source plates are mounted in the mounting blocks, the light source plates correspond to the two sides of the panel body, the upper ends of the mounting blocks are positioned through the fixing devices, and the clamping mechanisms are arranged on the two sides of the fixing devices. By arranging the mounting blocks, the panel body is mounted in a mounting groove through guide grooves in the mounting blocks, the panel body is fixed through the fixing devices and the clamping mechanisms, so that the panel body is convenient to install, the panel body is prevented from being damaged during installation, and the panel body is protected better through pressing springs in the fixing devices when the panel body is impacted.

The invention relates to wafer heat treatment equipment which comprises a loading chamber and an air supply pipe. The air supply pipe is connected with the loading chamber to supply the loading chamber for air; the wafer heat treatment equipment also comprises at least two exhaust pipes connected with the loading chamber, which exhausts air in the loading chamber. The air exhaust speed of the wafer heat treatment equipment is quicker and comparatively little air is left.

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 an engine air intake and exhaust system and method. The engine air intake and exhaust system comprises an air intake unit and an exhaust unit. The air intake unit comprises airintake pipes. Air intake spoilers are arranged in the air intake pipes. The exhaust unit comprises an exhaust pipe. Exhaust spoilers are arranged in the exhaust pipe. The air intake spoilers and theexhaust spoilers can enable passing air flow to form rotary air flow. In the engine air intake and exhaust system, the speed of an engine can be increased under the non-refueling condition.

The invention discloses a precise liquid medicine filter, which belongs to medical instruments and structurally comprises an upper cover, a lower cover, a liquid inlet nozzle and a liquid outlet nozzle. The upper cover is fastened with the lower cover, an upper cover ring is arranged on the inner side of the upper cover, a water flowing hole is arranged on the upper cover ring, the liquid inlet nozzle and the liquid outlet nozzle are respectively arranged at two ends of the lower cover, a plurality of exhaust holes are arranged on the upper cover, a liquid collecting groove is arranged in the middle of the lower cover, the liquid outlet nozzle is communicated with the liquid collecting groove, the liquid collecting groove is a U-shaped groove, and a plurality of bumps which are arrayed like a tree are disposed on the lower cover at two ends of the liquid collecting groove. The precise liquid medicine filter has the advantages that bubbles generated in a transfusion process are discharged so as to realize safety transfusion, a space between the upper cover and the lower cover is enlarged, the difficult problem that the bubbles are detained on a liquid inlet level and a liquid outlet level of the precise liquid medicine filter during usage is resolved, liquid medicine guiding is fast, exhaust speed is increased, and the like.

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 belongs to the technical field of cement dust removal equipment, and particularly relates to a building material conveying device which comprises a body, a conveying belt and a feeding hopper. The feeding hopper is arranged at the end of the conveying belt, and an opening is formed in the side, close to the conveying belt, of the feeding hopper. A pair of buffer curtains are fixedly connected to the corresponding positions, located on the two sides of the conveying belt, of the inner wall of the feeding hopper, and the tops and the opening sides of the buffer curtains are fixedly connected with the inner wall of the feeding hopper. The inner wall of the feed hopper at the bottom of the buffer curtain is fixedly connected with an elastic air bag through a support plate, and a valve hole communicating with the air bag is formed in the middle of the support plate. The buffering curtains fixedly connected in the feeding hopper are matched with the air bag, when a cement bag falls on the buffering curtains, the air bag is pressed and then exhausts air outwards through the valve hole, meanwhile, the buffering curtains on the two sides wrap the cement bag, the speed of the cement bag approaching the conveying belt is reduced, cement overflowing is reduced, then the impact force between the cement bag and the conveying belt is reduced, and flying dust pollution and cement overflow 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.

The invention discloses a multifunctional intelligent electronic mask comprising a mask body; an intelligent control device is arranged on the mask body; the intelligent control device comprises a first sensor, a control module and an air exhaust mechanism, the first sensor detects the respiratory rate of a human body and feeds back the respiratory rate to the control module, and the control module controls the air exhaust mechanism to be started to exhaust air in the mask body when judging that the air in the mask body reaches the set concentration according to the respiratory rate; in conclusion, the air exhaust mechanism capable of being intelligently controlled is arranged on the mask body, exhaled air in the mask is exhausted in time, the air exhaust amount and the air exhaust speed of the mask are increased, and thus the probability that the mask inhales the smell of the mask is greatly reduced; besides, the air exhaust mechanism is matched, and a specific sensor is further arranged, so that bacteria or chemical components in the air exhaled by a user can be effectively detected, and the physical condition of the user can be fed back in time.

The invention provides a fuel engine and belongs to the technical field of engines. The fuel engine comprises a round first cylinder body and a round second cylinder body; two adjacent first blockingplates and two corresponding adjacent second blocking plates form a sealed waste gas combustion chamber between a first rotary shaft and a second rotary shaft; a main exhaust pipe is connected with the perimeter walls of one sides of the first cylinder body and the second cylinder body and the air outlet direction of the main exhaust pipe is located between the first rotary shaft and the second rotary shaft; a middle exhaust pipe is connected with the perimeter walls of the other sides of the first cylinder body and the second cylinder body and the air outlet direction of the main exhaust pipeis right opposite to the air inlet direction of the middle exhaust pipe; the middle exhaust pipe is connected with a tail exhaust pipe; a first high-pressure electrode is arranged between each two adjacent first blocking plates and a second high-pressure electrode is arranged between each two adjacent second blocking plates; each first high-pressure electrode and the corresponding second high-pressure electrode can form breakdown electric sparks during the rotation of the first rotary shaft and the second rotary shaft. The fuel engine has the advantages of being compact in structure and the like.

The invention relates to the field of material drying equipment, and in particular to a shutter type vertical drying machine and a material drying system adopting the drying machine. The shutter type vertical drying machine comprises a tube body and material blocking rings arranged in the tube body, wherein each material blocking ring consists of more than two annular material blocking blades, and the material blocking blades of the same material blocking ring are fixed together and form a shutter structure. Because each material blocking ring of the shutter type vertical drying machine consists of the more than two annular material blocking blades, the material blocking blades of the same material blocking ring are fixed and form the shutter structure. The area of an air outlet of a hot air passage formed by each material blocking ring is increased through the shutter type material blocking ring, in the use process, on one hand, the hot air quantity introduced into the tube body can be increased, on the other hand, the contact area between materials and hot air can be increased, and the heat exchange efficiency between the materials and the hot air is improved. Therefore, the shutter type vertical drying machine has the advantage that the drying efficiency of the vertical drying machine is improved in a way of increasing the hot air quantity of the vertical drying machine.