69results about How to "Increase intake speed" patented technology

The invention discloses an inflation valve element. The inflation valve element comprises a fixing part, a compression spring, an inflation piston and a rubber seal, one end of the inflation piston isconnected to the fixing part through the compression spring, and the other end of the inflation piston is connected to the rubber seal. The inflation valve element is arranged on an explosion-proof valve, inflation is carried out from the inflation valve element, compared with a mode that inflation is carried out from an air-permeable membrane of the explosion-proof valve, the inflation valve element has the advantages that the air inlet speed is high, the used time is short, the detection efficiency is high, and in addition, the phenomena that the air-permeable membrane is damaged, and the explosion-proof valve is invalid can be avoided; and the air tightness detection inflation valve element and the explosion-proof valve are integrated into a whole, an inflation hole for air tightness detection does not need to be additionally formed in the sealed box body, after the detection is finished, the inflating piston is driven to automatically reset through the spring, the sealed state isrestored, a bolt does not need to be additionally arranged to seal the inflation hole, and therefore the risks that secondary seal is poor, and the protection grade requirement cannot be met can be avoided.

An eddy current ramjet engine comprises a case, a fuel system and an igniting system. The cross section of the inner chamber of the case is of circular shape. And a combustion chamber and a blowing chamber are installed inside the case. An air intake and an air outtake are installed in the combustion chamber of which the air outtake is connected with the blowing chamber. The cross section area of the combustion air outtake is smaller than the largest cross section area of the combustion chamber. The inner chamber of the blowing chamber is opened and extended towards the blowing direction. The air intake of the combustion chamber is connected to the air intake chamber and the fuel system and the igniting system are arranged correspondingly to the combustion chamber. The engine can be started in a static state by this brand new air admission method. The eddy current is formed by full utilization of circular motion and fluid motion and rotates with increasing speed from the periphery to the center. The eddy current enables fully combust fuel and prevents the combustion chamber from being burned. A spiral jet stream which rotates with increasing speed from the periphery to the center is also formed. The stream can unlimitedly increase the aircraft speed and can help the aircraft reach super speed which can not be reached by current jet engines; and the aircraft speed can be increased by hundreds, thousands or tens of thousands of times than the current aircraft speed.

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 provides a low-pressure exhaust gas recirculation (EGR) system of a vehicle engine and relates to an EGR system. The low-pressure EGR system of the vehicle engine passes through the engine, wherein a gas inlet and a gas outlet are formed in the engine, and the system comprises a gas inlet pipeline, a gas outlet pipeline, an EGR pipeline and an electronic supercharger. The gas inlet pipeline is arranged in front of the gas inlet and used for gas inflowing of the engine. The gas outlet pipeline is arranged behind the gas outlet and used for exhaust gas discharging of the engine. The EGR pipeline is connected between the gas inlet pipeline and the gas outlet pipeline. The electronic supercharger is arranged on one side of the gas inlet pipeline through a pipeline. According to the low-pressure EGR system of the vehicle engine, the electronic supercharger is additionally arranged on a gas inlet system, and response characteristics of the engine are improved under the working conditions such as cold starting, rapid accelerating, a low rotating speed and a low load accordingly. After the electronic supercharger is applied to the engine, natural aspirated working conditions, such as cold starting, the low rotating speed and the low load, of the engine are made up, the gas inlet speed of the engine is increased, and the response speed is reduced.

The present invention relates to an organo-silicon fluidized-bed reactor. It includes fluidized-bed body formed from conical cylinder and upper portion cylinder body. In the top portion of bed body an upper shell cover is fixed and in the bottom portion of conical cylinder a lower shell cover is fixed, in the bed body interior a finger-shaped heat exchange tube is hung, the upper portion of said finger-shaped heat extrange tube is connected with a heat-conducting oil distributor, said heat-conducting oil distributor is tubular double-layer structure, its lower layer tube is oil-feeding cavity and its upper layer tube is oil-returning cavity, two ends of said oil-feeding cavity are communicated with inlet of heat-conducting oil, and two ends of said oil-returning cavity are communicated with outlet of heat-conducting oil, the oil-feeding sleeve of finger-shaped heat exchange tube is communicated with lower layer oil-feeding cavity, and the central oil tube is communicated with upper layer oil-returning cavity.

The invention relates to variable air volume type air intake branch pipe. Air intake ports communicated with air exhaust pipes are made directly on an intermediate plate in a pressure stabilizing cavity in a way of corresponding to the air exhaust pipes; exchange-over valves are sealed and arranged on the air intake ports; the valve plates of the exchange-over valves are jointly arranged on the same transmission shaft which is driven by a vacuum valve arranged at the input end on the lateral side of the air intake branch pipe to swing; and the vacuum valve is controlled to act by an electromagnetic valve arranged on the lateral side of the intermediate plate of the air intake branch pipe. The electrical control mode adopted in the invention is quick in response, ensures that the most proper air amount is supplied under a corresponding working condition in time, achieves high air volume control accuracy and stability, improves the dynamic property of an engine and increases the air flow rate in a cylinder by improving the air intake speed of the engine at a high rotation speed, so a sub-combustion process is improved and the economy of low-speed fuel oil in the engine is improved.

An efficient and energy-saving gas mixing device of an internal combustion engine comprises a vertical pipe. First through holes are symmetrically formed in the left side and the right side of the vertical pipe. Transverse pipes are arranged at the outer ends of the first through holes. One end of each transverse pipe is fixedly connected with the outer end of the corresponding first through hole.Second through holes are formed in the other ends of the transverse pipe. Connecting pipes are fixedly mounted at the outer ends of the second through holes and are coaxial with the transverse pipes.A round sealing plate is arranged on the upper sides of the inner ends of the first through holes. The efficient and energy-saving gas mixing device is simple in structure and ingenuous in concept; the mixing speed and supply speed of gas fuel can be increased; efficient acting of the internal combustion engine can be guaranteed; and under drive of spiral blades, the inlet efficiency of gas and air in a gas mixing cavity can be improved, and efficiency work of the internal combustion engine can be guaranteed. The efficient and energy-saving gas mixing device can be mounted and used without carrying out structure modification on a traditional internal combustion engine, is low in manufacturing cost and can be mounted on an automobile, a driver controls stretching and contracting of a hydraulic rod through an accelerator pedal to control the speed of the gas fuel entering the internal combustion engine, and therefore the rotating speed of the internal combustion engine is controlled.

The present invention provides a vehicle that can achieve miniaturization in the front-rear direction of the vehicle. A vehicle (10) includes an engine (19), a generator (20), and a motor (22). The engine (19) burns a gaseous mixture in a cylinder to output a drive force. The generator (20) generates electricity by being rotated by the drive force outputted from the engine (19). The motor (22) drives by utilizing electric power (20) generated by the generator or electric power that has accumulated in a battery charged with electric power generated by the generator, and the motor (20) thereby outputs a vehicle-running drive force. A case (61) covering the motor (22) is of larger diameter than a case (65) covering a differential. The motor (22) has an output shaft outputting the vehicle-running drive force, and has the output shaft disposed parallel to a vehicle width direction. The generator (20) is disposed such that part of the generator overlaps an upper section (65a) of the case covering the differential.

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 provides a quick lime hydrator, which belongs to the technical field of slaked lime preparation equipment. In order to solve the problem of mixing nonuniformity caused by inappropriate mixing ratio of quick lime and water in an existing quick lime hydrator, the hydrator comprises a stock bin for placing the quick lime, a metering screw conveyer for conveying the quick lime and accomplishing metering work, a metering water pump connected with an external water source, a primary spiral stirrer and a secondary spiral stirrer for mixing the quick lime and the water, and a dust collection device for absorbing dust and water vapor generated during hydration reaction of the quick lime and the water, wherein the metering screw conveyer is communicated with the stock bin; the primary spiral stirrer and the secondary spiral stirrer are arranged up and down in parallel; the primary spiral stirrer is respectively communicated with the metering screw conveyer and the secondary spiral stirrer; the water spray end of the metering water pump stretches into the primary spiral stirrer and relatively gets close to the metering screw conveyer; the metering water pump starts to spray water when the quick lime enters the primary spiral stirrer; the dust collection device is communicated with the primary spiral stirrer.

The invention discloses an assembled height-adjustable distribution box, which comprises a box body and a rain shield plate, wherein both sides of the front surface of the box body are movably connected with a box door, the front surface of the box door is fixedly connected with a handle, the front surface of the box door is provided with a heat dissipation window, the bottom of the rain shield plate is fixedly connected with a fixing rod, and the bottom of the fixing rod is fixedly connected with the box body. As that box body, windshield, door, handles, cooling windows, fixed rod, heat dissipation mechanism, adjusting mechanism, suction pump, temperature sensor, exhaust pipe, suction pipe, the utility model relates to a heat collecting cover, a central processing unit, a housing, a double output shaft motor, a threaded rod, a threaded sleeve, a connecting block, a movable rod, a dovetail block, a dovetail slot, an opening and a connecting rod are used together to solve the problem that the height of the existing assembled distribution box cannot be adjusted. The assembled distribution box with adjustable height has the advantages of height adjustable and is worth popularizing.

The invention discloses an air way for a buffer air column. The air way comprises a first air way and multiple second air ways. The first air way is used for allowing external air to be inflated in and transversely flow. The second air ways communicate with the first air way and are used for allowing the air to flow to an air storage chamber to form the air column. Any second air way comprises anair guide passageway and an air guide opening for allowing the air in the first air way to flow to the air guide passageway, wherein the air guide opening and the air guide passageway can adjust the speed and the pressure of airflow in order to avoid air leakage. The invention further discloses an air column bag with the air way for the buffer air column. By means of the air way for the buffer aircolumn, the air retaining time can be greatly prolonged, the air inflow speed and the reflux speed of the air in the air column can be reduced, impact force of the air for an external film is reduced, thus, the quality of products can be more reliable, and the air closing effect is better.

The invention relates to a multipoint centralized dedusting desulphurization denitration apparatus. According to the invention, a cylindrical shell is arranged, a cover plate is arranged at the top of the cylindrical shell, a dust discharging port is arranged at the bottom of the cylindrical shell, a loop of air inlets is arranged on the upper part of the cylindrical shell, an air inlet pipe which is tangent to the cylinder wall of the cylindrical shell is arranged at the air inlets, the air inlet pipe is connected with a tail gas discharge pipe through a bend pipe arranged towards, a spray nozzle I for sprinkling desulphurization denitration liquid is arranged on the upper part of the bend pipe, a guide shell is arranged at the bottom of the cover plate, a lower end of the guide shell is arranged in the cylindrical shell which keeps 40-60 cm from the lower part of the air inlet to the air inlet, several air outlets communicated to the guide shell are arranged on the cover plate, and the caliber of the air outlet is greater than the caliber of the air inlet. According to the invention, the bend pipe is arranged at the outboard of the air inlet of the cylindrical shell, desulphurization and denitration are carried out in the bend pipe, waste water after desulphurization and denitration is discharged from the dust discharging port along the side wall of the cylindrical shell, then desulphurization and denitration are carried out on the tail gas, dust accumulated on the inner wall of the cylindrical shell is cleaned, several air inlets and air outlets are arranged, spraying resistance is overcome, and the air inlet speed is accelerated.

The invention belongs to the technical field of energy saving and emission reduction, and specifically relates to a thermoelectric power generation system employing high-temperature exhaust gas. The system comprises a forced-draft gas inflowing device, a heat transfer device, a thermoelectric power generation module, and a cooling water circulation module. The other end of a gas inlet pipe is communicated with a gas inflowing end of a housing gas tank, and a gas discharge end of the housing gas tank is communicated with a gas discharge pipe. The thermoelectric power generation module is made of thermoelectric material which is arranged on the external surface of the housing gas tank regularly. One end of the thermoelectric material contacts with the external surface of the housing gas tank, and the other end of the thermoelectric material contacts with the external surface of a water cooling tank. The cooling water circulation module consists of a water storage tank, a water pump, a first water pipe, a second water pipe, a condenser, and the water cooling tank. The system can make the most of heat of high-temperature exhaust gas for power generation, saves a large amount of energy, and improves the utilization rate of energy.

The invention relates to the field of air purifiers, in particular to a mobile air virus disinfection purifier. The mobile air virus disinfection purifier is characterized by comprising a base, an outer shell, a filtering disinfection device, a turbofan device and moving devices, wherein the turbofan device comprises an inner shell, a rotating shaft and a turbofan motor; the inner shell is coaxially and fixedly arranged in the interior of the outer shell; the rotating shaft is coaxially pivoted in the inner shell and the outer shell; the turbofan motor drives the rotating shaft to rotate; andintake turbofans, pressurization turbofans and exhaust turbofans are sequentially arranged on the rotating shaft from top to bottom. According to the mobile air virus disinfection purifier, bacteria,viruses and dust are filtered and eliminated through a plurality of layers of composite filter screens; the mobile air purification can be carried out, and the coverage range of the purification is large; and air purified by the filter screens is divided into two parts, one part of the air enters an inner flow guide channel to be subjected to pressurizing and heating, the other part of the air enters an outer flow guide channel to be subjected to atomizing and humidifying, and the two parts of the air are mixed in an exhaust annular channel, so that the particle size of atomized water molecules is reduced, and the energy consumption is reduced.

The invention discloses an air valve for an inflatable bag. The air valve comprises a locking screw, a lock catch, a spring, a body, a cylinder core pressing sheet, a sealing gasket and a cylinder core, wherein the cylinder core comprises a cylinder core disk and a cylinder core tube; the cylinder core tube is positioned in the middle of the cylinder core disk and is integrally formed with the cylinder core disk; the cylinder core pressing sheet comprises a pressing sheet and a casing pipe; the casing pipe is positioned in the middle of the pressing sheet and is integrally formed with the pressing sheet; the sealing gasket is of a disk shape and a cylinder core hole is formed in the middle of the sealing gasket; the cylinder core tube penetrates through the cylinder core hole and then is inserted into the casing pipe; a supporting frame is arranged in the middle of the body; he casing pipe penetrates through the middle of the supporting frame, then is inserted into the spring, and is fixed by the lock catch; and the locking screw is inserted into the cylinder core tube for locking. According to the air valve disclosed by the invention, the air feeding speed of the air valve is improved, the airtightness of the air valve is enhanced, and a production process is simplified; and meanwhile, the problems that a sealing film is easily turned up and a dustproof cover easily falls off are also thoroughly solved.

The invention relates to the field of garbage treatment, and concretely relates to an efficient garbage composting barrel. The barrel comprises a barrel body used for containing garbage, a barrel cover connected to the top of the barrel body in an openable mode and used for garbage compost feeding, a discharging bin located at the bottom of the barrel body and used for compost discharging, a liquid outlet formed in the position, close to the bottom, below the barrel body and used for leachate discharging, an air inlet valve and an air outlet valve which are arranged on the barrel body, and a temperature sensor arranged on the barrel body and stretching into the barrel body; and the barrel further comprises a water filtering plate embedded in the barrel body and a plurality of drainage ventpipes installed on the water filtering plate, the interior of the barrel body is divided into a solid garbage composting area and a leachate collecting area by the water filtering plate, the liquid outlet and the air inlet valve are arranged in the leachate collecting area, and the air outlet valve is arranged in the solid garbage composting area. The temperature stability can be maintained, thefertilizer quality is high, and the composting efficiency is high.

The invention relates to an exhaust structure for a cooking device and an oven with the exhaust structure. The exhaust structure comprises an inner container and an exhaust channel which is arranged above the inner container and provided with an exhaust fan. The inner container is provided with a first exhaust port, and the exhaust channel is provided with a first air inlet. The first exhaust portis in fluid communication with the first air inlet. A second exhaust port is further formed in the inner container, and a second air inlet in fluid communication with the second exhaust port is formed in the exhaust channel. The exhaust structure further comprises a control assembly used for controlling the opening and closing of the second exhaust port and the exhaust speed. The control assemblycomprises a driving device and a control piece, the driving device can drive the control piece to act according to the feedback of inner pressure of the inner container and has at least two states, and therefore, control over opening and closing of the second exhaust port and the exhaust speed is achieved. Compared with the prior art, the exhaust speed of the inner container can be controlled according to cooking requirements, and therefore the cooking effect is improved.

The invention provides a nanometer air filter for an engine, and relates to the technical field of an automobile engine. The nanometer air filter comprises a first combustion supporting ring, a second combustion supporting ring and a central ventilation column, wherein the first combustion supporting ring and the second combustion supporting ring are coaxially arranged, and the centers of the first combustion supporting ring, the second combustion supporting ring and the central ventilation column coincide; the first combustion supporting ring and the second combustion supporting ring are connected with the central ventilation column through air separation plates, and the air separation plates are dispersed between the first combustion supporting ring and the central ventilation column or between the second combustion supporting ring and the central ventilation column. The nanometer air filter arranged at the front end of the engine is composed of the first combustion supporting ring, the second combustion supporting ring and the central ventilation column. Air molecules enter the inner part of the engine after being fully dispersed by the nanometer air filter, thus the combustion ratio of fuel in the engine is increased, and further the power of the engine is improved.

The invention discloses an engine transient air-intake control system. The engine transient intake control system comprises a fan (3) and a control device, wherein the fan (3) is arranged above an air-intake pipeline (11) between an air inlet and an air-intake manifold and is used for adjusting the air flow strength of intake air and converting the air flow into vortex; and the control device is used for acquiring the state information of a vehicle and controlling the running speed of the fan (3) based on the state information of the vehicle. The invention also discloses a method for controlling such engine transient air-intake control system. The method comprises the steps of acquiring and processing the running state information of the vehicle through the control system, and sending out a command to control and adjust the rotating speed of the fan based on the current running state of the vehicle. With the adoption of the method provided by the invention, the air intake speed of an engine is increased, the vortex strength in a cylinder is improved, and the effect of mixing the oil and gas is improved; on the other hand, the air quality in the air-intake pipeline is regulated, the air supply of the engine under different working conditions is controlled, and the air-fuel ratio of the engine under different working conditions is precisely controlled, therefore, the combustion process is improved; and moreover, the fuel consumption and the exhaust emission are reduced while improving the power of the engine.

The invention relates to a retractable door, in particular to a bidirectional anti-explosion folding pneumatic retractable door. The bidirectional anti-explosion folding pneumatic retractable door comprises two groups of retractable door structures; each group of retractable door structures comprises a door box and a plurality of doorframes; each retractable door structure also comprises a rubber airbag and an electric air pump; an air port of each rubber airbag is communicated with an air port of the corresponding electric air pump; the rubber airbag is of a wave shape in the length direction of the rubber airbag; a soft steel wire which is distributed in a ring shape along the bag wall and extends along the length direction of the rubber airbag is embedded into the bag wall of each rubber airbag; the plurality of doorframes are fixed on the corresponding rubber airbags and are arranged at intervals in the length direction of the rubber airbags; each doorframe comprises a first doorframe and a second doorframe which are symmetrically arranged and are respectively fixed at both sides of the rubber airbag; a strip roller is arranged between the bottom end of each first doorframe and the bottom end of the corresponding second doorframe.

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 present invention relates to an organo-silicon fluidized-bed reactor. It includes fluidized-bed body formed from conical cylinder and upper portion cylinder body. In the top portion of bed body an upper shell cover is fixed and in the bottom portion of conical cylinder a lower shell cover is fixed, in the bed body interior a finger-shaped heat exchange tube is hung, the upper portion of said finger-shaped heat extrange tube is connected with a heat-conducting oil distributor, said heat-conducting oil distributor is tubular double-layer structure, its lower layer tube is oil-feeding cavity and its upper layer tube is oil-returning cavity, two ends of said oil-feeding cavity are communicated with inlet of heat-conducting oil, and two ends of said oil-returning cavity are communicated with outlet of heat-conducting oil, the oil-feeding sleeve of finger-shaped heat exchange tube is communicated with lower layer oil-feeding cavity, and the central oil tube is communicated with upper layer oil-returning cavity.

The invention relates to tooling equipment and particularly relates to an automatic feeding type screw driving machine. The automatic feeding type screw driving machine comprises a rack, wherein a feeding system and a lifting system are arranged on the rack, the feeding system comprises guide rails horizontally arranged, a frame plate used for supporting workpieces and a driving cylinder used for pushing the frame plate, the frame plate is in sliding connection with the guide rails, a motor is arranged at the top end of an upper lifting frame, a first coupling is connected to a driving shaft of the motor, the lower end of the first coupling is connected with a telescopic shaft, the lower end of the telescopic shaft is connected with a connecting shaft, the lower end of the connecting shaft is connected with a second coupling, and the lower end of the second coupling is connected with a screw driver; and the telescopic shaft comprises a sliding shaft connected with the first coupling and a fixed shaft arranged on the outer side of the sliding shaft in a sleeving manner, and the end, far from the sliding shaft, of the fixed shaft, is coaxially fixed with the connecting shaft. The automatic feeding type screw driving machine has the advantages that a plurality of screws can be simultaneously driven, the same driving torque can be ensured, the assembly efficiency is improved, the assembly time is saved, and the like.

The invention relates to a one-way automatic air inlet valve which comprises a valve body and a valve cover, wherein the valve cover is arranged at one end of the valve body, and a sealing cavity is formed between the valve cover and the valve body; the other end of the valve body is provided with an air outlet, the air outlet is used for connecting with a pipeline, and the valve body is hermetically arranged in an air inlet channel communicated with the air; the valve body is provided with an air inlet at one end of the sealing cavity, the air inlet is connected with the air inlet channel, and the air inlet is provided with a floatable sealing assembly; and the sealing assembly comprises a floating pin, a seal ring for sealing the air inlet is arranged on the floating pin, and the sealing cavity is connected with the air outlet through the channel in the valve body. The air inlet valve in the prior art has the technical problem that air inlet sensitivity and air inlet speed can not be guaranteed simultaneously due to the quality of steel balls, and the one-way automatic air inlet valve not only can guarantee air inlet speed but also has better air inlet sensitivity.

The invention provides a three-layer air sealing body. The three-layer air sealing body comprises two outer films, an inner film arranged between the two outer films, a plurality of air chambers, an inflation channel, an intermediate heat-seal line and longitudinal heat-seal lines, wherein heat-resistant blocks coated with a heat-resistant material are alternately arranged on the inner wall of the upper part of the inner film; the intermediate heat-seal line stretches over the heat-resistant blocks and the longitudinal heat-seal lines; the two outer films are adhered to the position, which is not provided with heat-resistant blocks, of the inner film so as to separate the inflation channel and the air chambers; the inflation channel is formed between two outer films on one side of the intermediate heat-seal line; and an air inlet is formed in the heat-resistant block between two adjacent longitudinal heat-seal lines between the inner film and one of the outer film, and enables the inflation channel and the air chambers to be communicated. According to the three-layer air sealing body, a traditional four-layer film structure is replaced by the three-layer film structure, so that materials are saved, the air intake speed is higher, the dead weight is smaller, the folding degree is reduced during air intake, and the air intake is uniform.

The invention relates to a portable pressing type air pump. The air pump comprises an air pump main body, a one-way air inlet valve, an air release assembly, an air pipe and a connecting piece, wherein the air pump main body comprises an air pump upper cover, an air pump lower cover, a supporting hard sheet and a check plug, and the air release assembly comprises a compression spring and an air release button; an air inlet and outlet hole in one end of the air pump lower cover is connected with the air pipe, the other end of the air pipe is connected with the connecting piece, the other end ofthe connecting piece is connected with a to-be-inflated product, and the check plug is installed in a central fixing hole of the supporting hard sheet; and the periphery of a pressing air bag of theair pump upper cover and the edge of the supporting hard sheet are welded and sealed, and the periphery of the air pump upper cover and the periphery of the air pump lower cover are welded and sealed.The air pump is small in size and easy to carry, a TPU material is environmentally friendly and good in resilience, the air pump is integrally fused and is firm in welding, the air inflow, inflationand non-return functions are achieved in the air pump, space is saved, the appearance is attractive, and the air pump is good in air tightness and worthy of popularization.

The invention discloses an internal combustion engine air intake system and a vehicle carrying the same. The internal combustion engine air intake system comprises two air inlets, wherein the air inlets are uniformly distributed on two sides below an internal combustion engine cover; each air inlet is in a flat square shape; the front section of each air inlet is convergent from front to back; airguiding holes are formed in the internal combustion engine cover and a middle net corresponding to the air inlets; the transverse distance of each flat square air inlet accounts for one half of the transverse distance of a headstock; the two air inlets are distributed close to the transverse middle position of the headstock; air inlet directions of the air inlets face the front part of the headstock, and air inlet channels behind the air inlets enter an inner cabin of the internal combustion engine and then deflect downwards. Therefore, the defects of low air intake efficiency and low dirt removal capacity of an air filtering and air intake system of an existing internal combustion engine air intake system vehicle in an internal combustion engine high-power state are overcome.

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.