46 results about "Reed valve" patented technology

A dust container for a vacuum cleaner comprises a vessel, a reed valve, and a filter. The vessel has a longitudinal axis and an annular cross section transverse to the longitudinal axis. The vessel has a first end and a second end, a tangential inlet near the first end, and an axial outlet at the first end. The second end is closed, and the vessel is impervious except for the inlet and the outlet. A vacuum actuated valve biased toward a closed position is positioned to seal the inlet of the vessel, and a filter is positioned in covering relationship with the outlet of the vessel. Dust is trapped within the vessel which can be disposed of as a unit together with the valve and filter and can be replaced with a fresh unit.

The rail vehicle integrity check device 20 comprises a first connector 21 adapted to form an airtight connection with the brake pipe 22 mounted on the rear wagon of a rail vehicle, and a second connector 23 adapted to form an airtight connection with a main reserve pipe 24 mounted on the rear wagon of the rail vehicle. A one-way valve 25, adapted to be in fluid communication with the brake pipe and the main reserve pipe of the rear wagon of the rail vehicle, is mounted between the first 21 and second 23 connectors. This may be done by providing elbow joints 26, 27 between each of the connectors 21, 23 respectively and the one-way valve 24. For convenience, the one-way valve 24 and any elbow joints 26, 27 provided may be housed within an external casing 28 in order to prevent the ingress of dirt whilst in use. The pipe connectors 21, 23 may be connectors used widely within the railway industry, such as angle cocks or gladhand couplers, or screw thread connectors, push and turn locking mechanisms or push fit connectors. Suitable flexible closure element one-way valves 25 include, but are not limited to, diaphragm check valves, duckbill valves or reed valves. Suitable hinged closure element one-way valves include, but are not limited to, swing check valves, butterfly check valves or tilting flap check valves. The one-way valve 25 comprises a chamber 29 and a pressure-sensitive closure element 30 abutting a closure surface 31 within the chamber 29.

The invention relates to a variable exhaust high-power two-stroke industrial engine, and belongs to the technical field of internal combustion engines. The engine comprises an engine body, an exhaust assembly and an air inlet control unit. The air inlet control unit is composed of a reed valve, an air filter, an electronic control unit and a reed pipe. The reed valves are hinged through an adjustable pin shaft, and a closed-loop feedback control loop is formed by combining non-contact detection of the reed pipes; the electronic control unit dynamically adjusts the opening angle and frequency of the reed valve through a fuzzy algorithm based on the rotating speed signal and the accelerator opening degree, and the scavenging efficiency is optimized; a rotatable baffle driven by a stepping motor is arranged in a three-way catalytic assembly of the exhaust assembly, the opening degree of the rotatable baffle is linked with an air inflow signal, and dynamic matching of exhaust back pressure and catalytic temperature is achieved. The problems that a reed valve of a traditional two-stroke engine is prone to fatigue, the catalytic efficiency is low, and emission exceeds the standard are solved, and the combustion efficiency and the environmental protection performance are remarkably improved.

The present application relates to a reed valve capable of suppressing occurrence of action failure caused by foreign matter. The reed valve (1) is provided with a valve element (4), a valve seat (6) having a valve hole (3) through which a fluid (J) can flow, a housing (8) that houses the valve element (4), and a reed (10) including an arm portion (18) and a valve element support portion (20), an end portion (22) of the arm portion (18) being fixed to the housing (8), the valve element support portion (20) being connected to the other end portion (24) of the arm portion (18) and supporting the valve element (4) in a manner to open and close the valve hole (3), if a direction of flow of the fluid (J) in the valve hole (3) is defined as a first direction (D1), and a surface of an inner surface of the housing (8) toward a downstream side of the first direction (D1) is defined as a first surface (21), then the first surface (21) includes a recessed portion (27) that opposes the arm portion (18).

The application relates to the field of aeroengines, in particular to a two-stroke aero-piston engine air intake system and an air intake flow control method. The system comprises an air filter, a throttle body, an oil injector, a reed valve and a fuel supply unit for supplying oil to the oil injector which are communicated through a connecting pipeline, and further comprises a cooling control subsystem, the cooling control subsystem comprising a cooling injector which is arranged on the connecting pipeline downstream of the throttle body and upstream of the oil injector; the inner wall surface of the connecting pipeline is provided with a non-uniform protruding structure to improve the proportion of the air intake along the resistance. The scheme can solve the technical problem that the air intake flow of the two-stroke aero-piston engine has large discreteness under low load, and realizes the technical effect of improving the consistency of the air intake flow under the low load of the engine.

A first surface (51) comprises: a valve seat surface (58) that comes into contact with a tip part (72) of a reed valve (70) in a closed state; and a groove (59) that is formed around the valve seat surface (58) and overlaps an outer edge (72a) of the tip part (72) when viewed in a second direction. The first surface (51) includes a contact surface (75) that comes into contact with a movable portion (73) of the reed valve (70) in the closed state.

The invention belongs to the technical field of piston engines, and discloses a special-shaped air inlet channel two-stroke piston engine reed valve which comprises a valve body, a valve plate, a pressing plate and a screw. The whole valve body is wedge-shaped, the cross section is a non-isosceles acute triangle, a multi-window hard framework is arranged in the valve body, and the surface of the valve body is covered with a vulcanized rubber layer. The valve plate is made of a carbon fiber composite material and comprises a plurality of blades, the bending area of each blade is of a contraction structure with a wide upper part and a narrow lower part, and the tip corner is wrapped by a fillet; the screw is a half-round head fine thread screw, and the threaded end of the screw is exposed out of the inner side of the valve body by 3-5 mm to serve as a The valve plates on the two sides are different in length, and the screw holes in the two sides are asymmetrically staggered. The surface heat dissipation coefficient of the pressing plate is smaller than that of the screw, and the contact surface of the screw head and the pressing plate is coated with thread glue. Heat of the valve plate and cold air flow are subjected to convective heat exchange through heat conduction of the screws, heat balance is achieved, the service life of the reed is prolonged, opening and closing stability and sealing performance are improved, impact resistance and torsion resistance are enhanced, and the valve plate is suitable for high-rotating-speed aero-engines.

An integrated reversing engine crankcase assembly comprises a crankcase and a transmission case, a cylinder block mounting plane is arranged on the large head side of the crankcase assembly, and engine suspension mounting points are arranged on the periphery of the cylinder block mounting plane; a shaft hole of an output shaft and a mounting plane of a propeller are arranged on the small end side of the crankcase assembly; a piston type air supply pump is arranged on the left side of the crankcase assembly and takes air from the crankcase assembly. A reed valve air inlet is formed in the rear side of the crankcase assembly. The transmission case is connected with the crankcase, and a reversing structure is formed through gear meshing connection. The crankcase assembly is compact in structural design, the radial size of an engine is reduced, and the output direction is changed through gear transmission.

A variable camshaft timing (VCT) control valve assembly includes a control valve having one or more valve faces and a valve cavity, one or more cavity vent ports in the control valve configured to communicate fluid between an outer surface of the control valve and the valve cavity, a valve sleeve having a sleeve cavity to receive the control valve and a plurality of holes, at least one of the holes configured to be in fluid communication with an advance fluid chamber of a VCT device and another one of the holes configured to be in fluid communication with a retard fluid chamber, the control valve axially slidable relative to the valve sleeve, and one or more reed valves attached to an outer surface of the valve sleeve configured to control fluid flow between one of the advance fluid chamber or the retard fluid chamber and the other of the advance fluid chamber or the retard fluid chamber.

The one-way valve assembly can be arranged on the micro water pump, the one-way valve assembly comprises a base and a reed valve, the base is provided with a fluid channel and is provided with a base body and a boss protruding outwards relative to the base body, and a contact face inclining relative to the base body is formed on the boss. A through hole is formed in the contact surface of the fluid channel; the reed valve is provided with a mounting part and a tongue piece capable of swinging relative to the mounting part, the mounting part is fixedly arranged on the seat body, and when the reed valve is in a closed state, the tongue piece is in contact with the contact surface and covers the through opening. The miniature water pump is provided with at least one one-way valve assembly and further comprises a cover assembly provided with a water pumping cavity and a water pumping component movably arranged at the water pumping cavity, the cover assembly is provided with a fluid path for fluid to enter and leave the miniature water pump, and the one-way valve assemblies are arranged on the fluid path. The water pumping cavity and the fluid channel form a part of a fluid path.

The invention relates to a scroll compressor. A main discharge port is formed in the center of the fixed substrate. A sub-discharge port is formed in a position different from the main discharge port in the fixed substrate. A main recess that opens toward the main reed valve such that the cross-sectional area of the flow path of the fluid increases is formed in the main discharge port. The auxiliary discharge port is formed with an auxiliary recess that opens toward the auxiliary reed valve such that the cross-sectional area of the fluid flow path becomes large. A sealing area for sealing the sub-recess by contact between the fixed substrate and the sub-reed valve is larger than a sealing area for sealing the main recess by contact between the fixed substrate and the main reed valve.

The application provides an engine, comprising a body provided with a containing cavity and an exhaust passage communicated with the containing cavity; a reed valve installed at an opening of the containing cavity; a gland installed on the body and blocking the opening of the containing cavity; and a fireproof member arranged in the containing cavity, wherein the fireproof member comprises a bottom plate and two side plates respectively arranged at opposite sides of the bottom plate, the two side plates are arranged at a side of the bottom plate facing the reed valve, and a plurality of through holes are formed in the bottom plate; wherein one end of the exhaust passage communicated with the containing cavity and the reed valve are respectively arranged at opposite sides of the bottom plate, a protruding portion is arranged on an outer side of at least one of the two side plates, and the maximum width of the fireproof member is greater than or equal to the width of the part of the containing cavity containing the fireproof member. When the high-temperature exhaust gas in the engine flows reversely in the exhaust passage, the mesh structure formed by the plurality of through holes in the bottom plate can cut and distribute the high-temperature exhaust gas, reduce the damage of the exhaust gas to the reed valve, and improve the service life of the reed valve.

The utility model provides a kind of explosion-proof V-type piston open-type compressor unit of coal mine underground integrated air conditioner, it is constituted by V-type piston open-type compressor, explosion-proof motor, elastic pin coupling and vertical and horizontal dual-purpose base, compressor is equipped with multiple groups of air inlet and air outlet and reed valve structure air inlet and air outlet valve, valve piece is stainless steel material, explosion-proof motor is equipped with explosion-proof terminal box and mesh explosion-proof structure cooling fan cover, coupling pin covers antistatic rubber layer, exposed part has protective cover.The compressor unit explosion-proof safety, stable and efficient operation, adapt to underground environment and be convenient for maintenance.

In a process, an inlet valve is opens from a hot plenum, and injects a working volume with hot fluid, and then closes. The hot fluid expands as a piston moves down. As the piston approaches the BDC, uniflow ports at a bottom uncover, and timed valves at a top open, flooding the fluid with cooled pressurized fluid from a cold plenum, and supercooling the expanded fluid into the working chamber where the fluid was prepared and cooled during a previous cycle. The working fluid is compressed back into the cold plenum, wherein heat is removed, and the timed valves close. The fluid remaining in the working volume is compressed into a remaining upstroke volume before being pressed into the hot plenum. The compressed fluid in the working volume is displaced by the piston motion through a one-way exhaust reed valve to the hot plenum, where it is reheated.

The iodine working medium high-pressure electromagnetic valve of the reed structure comprises an inlet assembly, a coil assembly, a valve element assembly and a valve seat which are sequentially connected from left to right in the axial direction, and the coil assembly is arranged to be capable of controlling the valve element assembly to do reciprocating motion through power on and off so that the valve element assembly can control on and off of a valve runner; wherein the valve element assembly comprises an outer armature, an inner armature, a reed, a valve element, an inner backing ring, an outer backing ring and a pressing ring, the inner armature, the valve element and the pressing ring are coaxially arranged in sequence from left to right, and the outer backing ring and the outer armature are arranged outside the inner armature in sequence from inside to outside; the inner armature is connected and clamped by reeds arranged at the two ends of the inner armature, so that the inner armature does not have a sliding fit surface during axial movement; the valve element is made of polytrifluorochloroethylene, and it is guaranteed that the valve element is not corroded in the iodine working medium state. The electromagnetic valve is reasonable in structure, convenient to machine and assemble, high in corrosion resistance and long in service life, and the production qualification rate is increased while miniaturization and light weight are achieved.

The application relates to a variable exhaust two-stroke industrial engine, belonging to the technical field of internal combustion engines; the engine comprises an engine main body, an exhaust assembly and an air intake control unit; the air intake control unit is composed of a reed valve, an air cleaner, an electronic control unit and a dry reed; the reed valve is hinged through an adjustable pin shaft, and a closed-loop feedback control loop is formed by combining non-contact detection of the dry reed; the electronic control unit dynamically adjusts the opening angle and frequency of the reed valve through a fuzzy algorithm based on a rotating speed signal and a throttle opening degree, so that scavenging efficiency is optimized; a rotatable baffle driven by a stepping motor is arranged in a three-way catalytic assembly of the exhaust assembly, the opening degree of the rotatable baffle is linked with an air intake signal, and dynamic matching of exhaust back pressure and catalytic temperature is realized. The application solves the problems of fatigue of a reed valve of a traditional two-stroke engine, low catalytic efficiency and excessive emission, and significantly improves combustion efficiency and environmental protection performance.

The invention provides an engine which comprises an engine body provided with a containing cavity and an exhaust passage communicating with the containing cavity. The reed valve is mounted at the opening of the accommodating cavity; the gland is mounted on the machine body and blocks the opening of the accommodating cavity; the flame-retardant part is arranged in the containing cavity, the flame-retardant part comprises a bottom plate and two side plates located on the two opposite sides of the bottom plate respectively, the two side plates are located on the side, facing the reed valve, of the bottom plate, and a plurality of through holes are formed in the bottom plate; wherein the end, communicated with the containing cavity, of the exhaust passage and the reed valve are located on the two opposite sides of the bottom plate respectively, a protruding part is arranged on the outer side of at least one of the two side plates in a protruding mode, and the maximum width of the flame-retardant part is larger than or equal to the width of the part, containing the flame-retardant part, of the containing cavity. When high-temperature waste gas in an engine flows reversely in the exhaust passage, the mesh structure formed by the through holes in the bottom plate can cut and divide the high-temperature waste gas, damage of the waste gas to the reed valve is reduced, and the service life of the reed valve is prolonged.

The invention provides an air inlet device of a two-stroke heavy oil engine, and belongs to the field of engine air inlet system design. In order to solve the problems that an existing multi-cylinder two-stroke heavy oil engine is large in number of throttle valves, large in control difficulty and low in air inlet efficiency, the device is formed by sequentially connecting an air filter, the throttle valves, an air inlet pipe, a reed valve upper seat, a reed valve, a reed valve mounting seat and a reed valve lower seat, the air inlet pipe comprises a pressure stabilizing cavity and an air inlet manifold, and the reed valve is a one-way valve. When an engine sucks air, the reed valve is opened, and fresh air enters the air cylinder through the pressure stabilizing cavity of the air inlet pipe, the air inlet manifold and the reed valve after being filtered and regulated by the throttle valve; when the gas inlet is closed, the reed valve prevents gas backflow, and the pressure stabilizing cavity can reduce gas inlet pressure wave reflection so as to reduce resistance. According to the device, the number of throttle valves is reduced, the air inlet stability and the air inlet efficiency are improved, the scavenging efficiency and the control efficiency of an engine controller are improved, and the device is suitable for performance optimization of the two-stroke heavy oil engine.

Provided herein is a valve stopper positionable within a barrel of an injection device. The valve stopper includes a membrane comprising a proximal face and a distal face and that separates a first chamber and a second chamber of the barrel. A lateral wall is joined to the membrane that defines at least one cavity and provides a circumferential sealing surface that sealingly engages an inner surface of the barrel. The membrane comprises a reed valve thereon that may be actuated to selectively create a fluid path through the membrane from the proximal face to the distal face. The reed valve includes a block formed integrally with the membrane and that includes one or more openings therein, and one or more flaps configured to deflect to uncover the openings to create a fluid path through the reed valve for transferring fluid only from the second chamber to the first chamber.

The application discloses a motor driving circuit of a soybean milk machine or a cell disruptor and a control method thereof, and relates to the technical field of the soybean milk machine or the cell disruptor. The motor driving circuit comprises a power supply circuit, a heating disc driving circuit and a motor driving circuit, and the heating disc driving circuit and the motor driving circuit are in communication with the power supply circuit. The motor driving circuit comprises a first thyristor, a second thyristor and a first relay which are connected in series. The control electrode of the first thyristor is connected with the collector of a first triode. The control electrode of the second thyristor is connected with the input end of a first chip. The output end of the first relay is connected with the collector of a second triode. The emitter of the first triode, the output end of the first chip and the emitter of the second triode are connected with a magnetron dry reed valve in series. The magnetron dry reed valve is grounded. The application can fully meet the new national standard opening cover safety requirements, greatly reduce the product modification cost, avoid major changes to the existing structure, improve the reliability of safety protection and design flexibility.

The invention discloses a reed valve suitable for an air inlet system of a rotor engine, and belongs to the technical field of engine accessories. The problems that a traditional reed valve is prone to fatigue fracture, fast in abrasion and poor in sealing performance under the high-frequency vibration working condition of a rotor engine, and then the air inlet efficiency is low, and the service life is short are solved. The movable end of the carbon fiber diaphragm movably covers a valve port of the valve seat, the silica gel coating is coated on a sealing surface, in contact with the valve seat, of the carbon fiber diaphragm, the lift limiter is arranged on the outer side of the carbon fiber diaphragm, and the fixed end of the lift limiter covers the fixed end of the carbon fiber diaphragm. The lift limiter and the carbon fiber diaphragm are fixed on the valve seat through bolts, the cantilever end of the lift limiter is an arc-shaped surface which is gradually far away from the carbon fiber diaphragm, and a gap between the other end of the lift limiter and the valve seat is the lift of the carbon fiber diaphragm. The high-frequency vibration fatigue resistance can be improved. The silica gel coating reduces high-frequency impact abrasion, improves the sealing performance, reduces the sealing leakage rate and improves the air inlet efficiency.

A main discharge port is formed at a center of a fixed base plate. An auxiliary discharge port is formed in a portion of the fixed base plate that is different from the main discharge port. The main discharge port includes a main recess that opens toward a main reed valve so as to increase a cross-sectional area of a flow passage for the fluid. The auxiliary discharge port includes an auxiliary recess that opens toward an auxiliary reed valve so as to increase a cross-sectional area of a flow passage for the fluid. A sealing surface area, with which the fixed base plate and the auxiliary reed valve are in contact with each other to seal the auxiliary recess, is larger than a sealing surface area with which the fixed base plate and the main reed valve are in contact with each other to seal the main recess.

In one embodiment, a reed valve includes a first valve body portion including one or more inlet apertures fluidly coupled to a tapered second valve body portion including one or more outlet apertures. The reed valve includes at least one sealing surface disposed proximate to the one or more outlet apertures and at least one flap continuously, reversibly movable between an open position in which the one or more outlet apertures are open and a closed position in which the one or more outlet apertures are closed. The reed valve has an open position allowing forward flow through the reed valve when fluid pressure proximate the at least one inlet orifice exceeds fluid pressure proximate the at least one outlet orifice, and an open position allowing forward flow through the reed valve when fluid pressure proximate the at least one outlet orifice exceeds fluid pressure proximate the at least one inlet orifice. The closed position prevents reverse flow through the reed valve. The reed valve may be installed in an air tank assembly for use with a turbocharged engine to reduce the occurrence of turbo lag during acceleration.

An end plate includes a plurality of connection portions coupling a center portion and an outer peripheral portion, and a plurality of through holes formed between the connection portions. The center portion includes a recess portion having a discharge hole, and a fixing hole through which a fixing member for fixing a reed valve to the end plate passes. In a fan-shaped region surrounded by a first half line starting from a center of a shaft hole and passing through a center of the discharge hole, a second half line starting from the center of the shaft hole and passing through a center of the fixing hole, and an outer peripheral surface, the through hole is formed to be continuous in a circumferential direction of the fan-shaped region, and both ends of the through hole in the circumferential direction of the fan-shaped region are located outside the fan-shaped region.

The reed valve core comprises a reed cage, a reed, and a securing band. The reed cage has a top wall and two or more sidewalls defining an interior space. A fluid inlet and a fluid outlet are positioned in the top wall and one of the sidewalls, respectively. The reed is positioned over and is configured to seal the fluid outlet to occlude a flow of fluid from the fluid outlet. The securing band is positioned over the reed and the reed cage to fasten a top portion of the reed to a top portion of the sidewall in which the fluid outlet is positioned. The positioning of the securing band defines a bending axis for the reed to articulate and to displace the reed from the reed cage upon a fluid pressure differential being exerted on the reed.

The utility model provides a valve group assembly, a cylinder head assembly and a compressor. The valve group assembly comprises a valve plate and a valve plate, the valve block is installed on the valve plate, at least three exhaust holes are formed in the valve plate, at least a first reed valve, a second reed valve and a third reed valve are arranged on the valve block, and the first reed valve, the second reed valve and the third reed valve cover the corresponding exhaust holes respectively; the end face of the valve plate serves as a projection plane, the first reed valve and the third reed valve are arranged in the same direction in the first direction, the second reed valve is arranged between the first reed valve and the third reed valve, and the second reed valve is arranged in the opposite direction in the first direction. The second reed valve is arranged in the reverse direction in the first direction, so that the limited space on the valve plate can be fully utilized.

The utility model provides an engine lubrication assembly which is fixed with an engine, the engine comprises a casing, a reed valve mounting seat fixed on the casing and a connecting pipe fixed on the reed valve mounting seat, the engine lubrication assembly comprises a support, an electronic lubricating oil pump, an oil conveying pipe and an engine oil nozzle, the support is fixed on the side edge of the reed valve mounting seat, and the electronic lubricating oil pump is arranged on the support. The electronic lubricating oil pump is installed in the support, the engine oil nozzle is fixed to the connecting pipe, one end of the oil conveying pipe is connected with the electronic lubricating oil pump, the other end of the oil conveying pipe is connected with the engine oil nozzle, and the support comprises an arc-shaped locking section and fixing sections which are located at the two ends of the locking section and can be attached to each other. The electronic lubricating oil pump is simple in structure, small in occupied space and high in lubricating efficiency, the design concepts of miniaturization and light weight of an engine are met, and compared with traditional constant-pressure and quantitative forced lubrication, the electronic lubricating oil pump is used, so that the lubricating oil utilization rate is increased, and the oil injection quantity is controlled more accurately.

Systems and methods disclosed herein include a portable air pump including an electric air compressor and a compressor housing surrounding the electric air compressor. The electric air compressor comprises a motor, a piston cylinder, a piston and a reed valve. The piston has a piston head located within a piston cylinder and a piston rod attached to the motor. The piston head includes a piston valve that allows air to enter the piston cylinder. The reed valve is configured to allow air to flow from the piston cylinder to the air outlet when the portable air pump and inflator system is operated. The piston head also includes a pressure relief passage defining an opening through the piston head to allow air pressure to escape from within the piston cylinder.

The compressor exhaust structure comprises a flange, a first groove is formed in the flange, a through hole is formed in the groove bottom of the first groove, the through hole communicates with an exhaust hole of the compressor, a valve body is arranged in the first groove, an exhaust channel is formed in the first groove, and the valve body communicates with the exhaust channel. The valve body is used for opening or closing the through hole so that the exhaust channel can be communicated with or disconnected from the through hole, the flange is further provided with a valve deck, the valve deck and the valve body are oppositely arranged, the valve deck is provided with a backpressure hole, a limiting structure is arranged in the first groove, and the limiting structure is arranged in the axial direction of the flange. And the limiting structure is used for limiting the valve body. According to the reed valve, the technical problem that in the prior art, a reed valve of a rotor compressor is prone to concave bending deformation, stress concentration and the like, and consequently the valve plate is broken can be solved.

The reed valve includes a first valve body portion that includes one or more inlet holes fluidly coupled to a tapered second valve body portion that includes one or more outlet holes. The reed valve includes at least one sealing surface disposed adjacent to the one or more outlet holes and at least one flap that is continuously and reversibly movable between an open position and a closed position, the open position allowing forward flow through the reed valve when the fluid pressure adjacent to the at least one inlet hole exceeds the fluid pressure adjacent to the at least one outlet hole, and the closed position preventing reverse flow through the reed valve when the fluid pressure adjacent to the at least one outlet hole exceeds the fluid pressure adjacent to the at least one inlet hole. The reed valve can be installed in an air box assembly for use with a turbocharged engine to reduce the occurrence of turbo lag during acceleration.