64results about How to "Exhaust stable" patented technology

The invention provides an airway pressure relief valve. The valve comprises a valve body, a damping cavity connected to the valve body, a piston and an elastic piece, wherein the valve body is provided with a first vent hole communicated with an airway of a patient and a second vent hole communicated with atmospheric environment; the damping cavity is internally provided with a damping air chamber communicated with the atmosphere; the piston passes through the damping cavity, the damping air chamber is formed in a chamber of the damping cavity through a first end of the piston, and the first end can move along the chamber of the damping cavity; the second end of the piston is positioned in the chamber of the damping cavity and seals up or opens the first vent hole along with the movement of the piston; and the elastic piece is arranged in the chamber of the valve body and presses the second end of the piston eccentrically. The airway pressure relief valve adopts a mode of mechanical control, has simple structure, and can control and maintain the safety pressure of the airway steadily. When pressure reaches the opening pressure of the relief valve, the relief valve can exhaust steadily without generating obvious and vigorous pressure fluctuation.

The invention relates to the technical field of energy storage, in particular to a compressed air energy storage system and method.The compressed air energy storage system comprises an air cavity and an inflation and deflation pipe orifice, a piston capable of moving up and down is arranged in the air cavity and divides the air cavity into an upper low-pressure cavity and a lower high-pressure cavity, and the low-pressure cavity is provided with a low-pressure communication opening capable of communicating with the outside. The piston is provided with a high-pressure communicating opening capable of communicating the low-pressure cavity with the high-pressure cavity, the inflation and deflation pipe orifice communicates with the bottom of the high-pressure cavity, and the inflation and deflation pipe orifice is externally connected with a cooling compression device used for inflation and a heating expansion device used for deflation. According to the compressed air energy storage system and method, the problems that in the compressed air energy storage system, the air inlet pressure of the expansion machine is unstable, and throttling losses exist can be solved.

The invention discloses a device for treating household garbage. The device comprises an outer shell, an inner shell, a box, a first connecting pipe, a first baffle plate, a first moving piece, a second moving piece, a second baffle plate, a forward magnetostrictive film, a reverse magnetostrictive film, a coil, a first one-way film, a second one-way film and multiple cooling pipes; the inner shell is positioned on the inner side of the outer shell; a combustion cavity is formed in the inner shell; a feeding port is formed in the top wall of the inner shell; a first exhaust hole is formed in the side wall of the inner shell; the feeding port and the first exhaust hole are both communicated with the combustion cavity; the box is positioned on the outer side of the outer shell; an accommodating cavity is formed in the box; an intake hole and a second exhaust hole are formed in the side wall of the box; a first end of the first connecting pipe is connected with the first exhaust hole, and a second end of the first connecting pipe is connected with the intake hole; the first baffle plate is positioned in the accommodating cavity for dividing the accommodating cavity into a first abdominal cavity and a second abdominal cavity; and an exhaust hole is formed in the first baffle plate. The device is excellent in garbage treatment effect.

Provided are a tire vulcanization mold, which can secure stable exhausting while embedding blades securely in the tire mold surface, and a manufacturing method therefor. In addition to providing protruding sections (9) that protrude in the thickness direction midway in the vertical direction of a blade (8), a communicating section (12), which extends from below the protruding sections (9) to above the protruding sections (9) and which passes through the blade (8) in the thickness direction, is provided. The initial thickness (t3) of the exhaust grooves (7) provided in the tire mold surface (5) is formed to be thinner than the thickness (T) of the protruding section (9). By inserting and positioning the lower end of a blade (8) in an exhaust groove (7) and pressing the positioned blade (8) in the depth direction of the exhaust groove (7) to embed same while spreading the exhaust groove (7) in the thickness direction using the protruding sections (9), minute gaps (g) are formed between the portions (10) above the protruding sections (9) of the embedded blade (8) and the exhaust groove (7), and the minute gaps (g) and the exhaust hole (13) communicate through the communicating section (12).

The invention provides a scroll type linear tooth head structure of a scroll compressor. The scroll type linear tooth head structure of the scroll compressor is characterized in that gas is exhaustedthrough static scroll plates and a movable scroll plate; when a gas suction chamber is closed, a first clearance is formed between a first center head part section and a second center inner circular arc section, a second clearance is formed between a second center head part section and a first center inner circular arc section, and scroll teeth of the static scroll plates between the gas suction chamber and an intermediate pressure chamber are engaged with scroll teeth of the movable scroll plate; the static scroll plates and the movable scroll plate are capable of sucking air and compressing;and when the gas suction chamber is gradually opened, the scroll teeth of the static scroll plates between the gas suction chamber, the intermediate pressure chamber and the gas exhausting chamber are engaged with the scroll teeth of the movable scroll plate. The invention also provides a correcting method of the scroll type linear tooth head structure of the scroll compressor. According to the scroll type linear tooth head structure of the scroll compressor and the correcting method, the tooth head parts are engaged through gradual clearances, so that the pressure of a compressing chamber and the pressure of a gas exhausting hole are close to each other or equal to each other while the compressing chamber communicates with the gas exhausting hole; the compressing process can be subjectedto smooth transition, the mechanical noise and electromagnetic noise caused by suddenly changed pressure can be reduced, and thus the energy efficiency ratio can be increased.

The invention provides a disposable infusion apparatus with a precise filter capable of exhausting gas automatically, and belongs to the field of medical equipment. The disposable infusion apparatus with the precise filter capable of exhausting gas automatically comprises a cap bag, a bottle inserting plastic needle, a first infusion tube section, a first water stopping valve, a flat-bottom drip chamber, a gas exhausting tube, a second infusion tube section, an adjusting valve, the precise filter capable of exhausting gas automatically, a third infusion tube section, a second water stopping valve, a Luer, a Luer fitting and an intravenous needle, wherein the gas exhausting tube is arranged in the flat-bottom dripping chamber; the cap bag sleeves the bottle inserting plastic needle; the bottle inserting plastic needle is connected with the flat-bottom dripping chamber through the first infusion tube section; the first water stopping valve sleeves the first infusion tube section; the flat-bottom dripping chamber is connected with the precise filter capable of exhausting gas automatically through the second infusion tube section; the adjusting valve is mounted on the second infusion tube section; the precise filter capable of exhausting gas automatically is connected with the Luer through the third infusion tube section; the second water stopping valve sleeves the third infusion tube section; the Luer is connected with the Luer fitting in a clamping mode; and the Luer fitting is connected with the intravenous needle.

The invention discloses an air discharge control device and method for train braking. The control device comprises a train pipe arranged on a train, a controller, a pipeline communicated with the train pipe, a pressure sensor arranged in the pipeline, a pressure feedback control circuit and a flow control body arranged in front of an air exhaust opening of the pipeline; the flow control body comprises a driving circuit and m electric-control switch valves in parallel connection, and m>=2; and the signal input end of the pressure feedback control circuit is electrically connected with the signal output end of the pressure sensor, the pressure feedback control circuit is electrically connected with the controller and a drive circuit, and the driver circuit is connected with the electric-control switch valves. The control device and method are characterized in that the air discharge speed can be controlled stably and adjusted continuously.

The invention provides an environmental-friendly particle food drying and stirring device which comprises a tank, first stirring blades arranged in the tank, and a motor arranged outside the tank. Thetwo first stirring blades are arranged; the motor simultaneously drives the two first stirring blades to rotate through a transmission mechanism; a baffle plate is fixed into the tank and divides aninner cavity of the tank into a left cavity and a right cavity; the cross section of the baffle plate in the vertical direction is in a U shape; an opening part of the baffle plate is arranged rightwards; the two first stirring blades are located in the baffle plate; an installation hole is formed in the right side of the tank in a penetrating way; a discharge pipe is fixedly arranged in the installation hole; the right end of the discharge hole stretches out of the installation hole and is connected with a first hot air blower; an exhaust passage for communicating the right cavity and the outside is formed between the outer side wall of a discharge pipe and the hole wall of the installation hole; a hopper is arranged right above the right end of the discharge pipe and is located between the first hot air blower and the tank; a feeding pipe is vertically fixed between the hopper and the discharge pipe; and two ends of the feeding pipe communicate with the hopper and the feeding pipe. The environmental-friendly particle food drying and stirring device provided by the invention has the advantage of good drying effect.

The invention discloses a two-section type gradient pitch double-screw compressor rotor. The two-section type gradient pitch double-screw compressor rotor comprises a male rotor, a female rotor, male rotor journals and female rotor journals, wherein the male rotor is connected with bearings on the two sides of a compressor shell through the male rotor journals. the female rotor is connected with the bearings on the two sides of the compressor shell through the female rotor journals; and the male rotor journals are connected with a coupler through male rotor shaft heads. The first section close to the air suction side adopts the equal pitch, and a complete contact line is formed on the section, so that the problem that the working volume is reduced due to the gradient pitch is avoided, and the air volume of a compressor is ensured. The pitch of the second section of screw close to the exhaust side is gradually reduced, so that the internal compression with the changed pitch is increased in the compression process, the area of an exhaust orifice is increased, the flow loss during exhaust is reduced, the exhaust noise is reduced, and the efficiency of the compressor is improved.

The invention relates to a method for setting a low-pressure casting filling-mold air exhaust channel for a sand mold. The method comprises the following steps of: vertically drilling at least one deep hole for communicating the highest point of a cavity and the outside in the sand mold; downwards smearing a section of pasty fire resistant material layer in an orifice at the upper end of the deephole; drilling a small-aperture shallow hole communicated with the deep hole in the fire resistant material layer; and heating and hardening the fire resistant material layer, wherein when aluminum liquid rises steadily, the air in the cavity is exhausted from the small-aperture shallow hole; and when the aluminum liquid continuously rises through the deep hole in the sand mold and overflows fromthe small-aperture shallow hole, the aluminum liquid overflowing the plane of the sand mold is solidified quickly due to the relatively small aperture of the small-aperture shallow hole. Therefore, the air can be exhausted steadily during mold filling; after mold filling, the cavity is closed quickly, so that pressurization, pressure retention and crystallization are realized conveniently, and a reliable guarantee is supplied for improving the quality of a product. Furthermore, the height of a cover box sand mold is effectively reduced to 100 to 120 millimeters, the sand using amount of a cover box is reduced greatly, and the cost is saved.

The invention discloses a self-ventilation traction motor. The motor comprises a shell, a driving shaft and a rotor; the rotor is connected with one side of the interior of the shell, the driving shaft is connected with one end of the rotor, an air inlet cover is connected with one side of the exterior of the shell, an air outlet cover is embedded into the top end of one side of the outer wall ofthe shell, and liquid storage hoppers are arranged on the two sides of the outer wall of the rotor respectively. Blades are connected to the top end of the exterior of the driving shaft in a sleevingmode, air inlet pipes are installed at the top ends of one sides of the outer walls of the liquid storage hoppers in an embedded mode, and pressure balancing pipes are installed on one sides of the outer walls of the two liquid storage hoppers. The blades are driven by the driving shaft to rotate, so that external gas is fed into the shell from the air inlet cover; and heat generated in the shellis absorbed. Meanwhile, lubricating oil liquid is injected into the rotary connecting position of the driving shaft from the liquid inlet pipe through the pressure balancing pipes, so that the ventilation and heat dissipation performance of the interior of the traction motor is achieved, and automatic lubrication of the connecting position of the driving shaft is achieved.

The invention provides an overpressure exhaust device which comprises a hand wheel, a lead screw stepping motor, a valve body, a sealing ring, a valve element, a position switch, a supporting plate, a circular ring nut and an electric connector. Wherein the valve body, the circular ring nut and the electric connector form a valve body assembly, and the valve element, the supporting plate, the lead screw stepping motor and the position switch form a valve element assembly. Through the threaded fit of the lead screw and the circular ring nut fixed on the valve body, the rotating motion of the lead screw is changed into the linear motion of the valve element assembly in the cavity of the valve body assembly, and the adjustment of the overpressure value in the sealed cabin is realized by adjusting the opening degree of the exhaust windows in the valve element assembly and the valve body assembly.