40results about How to "Realize exhaust function" patented technology

The invention relates to a vacuum high speed blender which comprises a main cover composed of a cup cover and a bottom cover. The main cover is provided with an exhaust suction nozzle and an exhaust hole. The vacuum high speed blender further comprises an auxiliary cover, a vacuum nozzle is arranged on the auxiliary cover, and the bottom cover and the auxiliary cover are detachably assembled through a positive and negative turn-lock clasp; the exhaust suction nozzle is arranged on the bottom cover through an elastic device in a vertically stretchable and movable mode, an upper coupling portion is arranged on the exhaust suction nozzle, and a lower coupling portion is arranged on the vacuum nozzle; an air cavity is formed between the auxiliary cover and the bottom cover, the exhaust suction nozzle, the exhaust hole and the vacuum nozzle stretch into the air cavity, and the auxiliary cover or the bottom cover is provided with a ventilation groove communicating the air cavity with the external world. When the vacuum high speed blender is in use, no food residue is splashed to the main cover, only the auxiliary cover needs to be disassembled and washed, the main cover does not need to be flushed, and the service life of the air pump is prolonged. The main cover and the auxiliary cover are detachably assembled through the positive and negative turn-lock clasp, and in the assembling and disassembling process, coupling and separation of the exhaust suction nozzle and the vacuum nozzle are achieved. During vacuumizing of the cup body, the ventilation groove achieves the exhaust function, and the air leakage function is achieved during air return of the cup body.

The invention discloses an integrated electro-hydraulic servo driver hydraulic system which comprises a drive motor, a hydraulic pump, a first check valve, a second check valve, an electromagnetic reversing valve, an overflow valve, a servo valve, a hydraulic cylinder, a sealed boosting oil tank and a first throttling valve. The drive motor is connected with the hydraulic pump. The oil outlet of the hydraulic pump is connected with the first check valve. The first check valve is divided into three liquid ways at the same time. The first liquid way is connected with the port P of the electromagnetic reversing valve. The port T of the electromagnetic reversing valve is connected with the second check valve. The second liquid way is connected with the port P of the overflow valve. The port T of the overflow valve is connected with the second check valve. The third liquid way is connected with the port P of the servo valve. The port T of the servo valve is connected with the second check valve. The port A and the port B of the servo valve are communicated with the port A and the port B of the hydraulic cylinder respectively. The second check valve is sequentially connected with the sealed boosting oil tank and the port P of the first throttling valve. The port T of the first throttling valve is connected with the oil sucking opening of the hydraulic pump. The hydraulic system is not prone to heating and can stand by for a long time.

The invention provides a micro-fluidic chip for chemiluminescence detection, and a using method and a reagent cleaning method thereof, and belongs to the field of biochemical testing devices. The micro-fluidic chip comprises a substrate and a cover plate which form a sealing environment and are used for a micro-fluid to flow, the substrate is covered with the cover plate, and the substrate comprises: a sample adding hole and a diluted solution adding hole at the first layer; a sample quantification groove, a sample overflow groove, a diluted solution quantification groove and a dilution overflow groove at the second layer; an incubation groove at the third layer, solution storage grooves at the fourth layer, a detection groove at the fifth layer and a waste liquid groove at the sixth layer, wherein the sample quantification groove is communicated with the incubation groove, the diluted solution quantification groove is communicated with the incubation groove, the incubation groove is communicated with the detection groove, and the detection groove is communicated with the waste liquid groove through a hydrophobic flow channel. The separation, mixing and detection of a liquid is realized without repeatedly adding a sample, and the whole process is automatically completed, so the efficiency is increased, and the cost is realized; and the cleaning of a reaction reagent is realized, so the working efficiency is increased.

A wall hanging type microwave oven comprises: a body disposed on a building wall, in which a cooking chamber and an electric component chamber separated with each other are provided; an exhaust path for discharging the gas generated from a gas oven range installed below the body, separating from the cooking chamber and making a lower section of the body communicate with an upper section of the body; a cooling path for cooling the electric component chamber and communicating front section of the body with the upper section of the body via the exterior electric chamber; a ventilation path for ventilating a cooking chamber and communicating front section of the body with the upper section of the body via the exterior cooking chamber; an exhaust fan installed in the upper portion of the body to make air flow through the ventilation path, cooling path, and the exhaust path. The wall hanging type microwave oven is provided to perform exhaustion of the gas oven range, cooling of the electric component chamber, and ventilation of the cooking chamber through the exhaust fan in the rear upper portion, thus, the air circulation construction is improved.

The invention discloses a roller-type hydraulic rocking arm component. The structure is as follows: one end of a rocking arm is provided with a short shaft, a bearing is embedded outside the short shaft and into the roller, and the roller and a camshaft form a transmission pair; an oil duct is arranged in the rocking arm, the middle part of the rocking arm is provided with a rocking arm shaft, the other end of the rocking arm is provided with a plunger bushing, and a plunger, a check valve and a return spring are sequentially arranged in the plunger bushing; the upper end of the plunger bushing is provided with a plunger cover plate, and the plunger cover plate is provided with an oil return channel; and the plunger bushing is connected with a slider through a cutting sleeve, the slider closely contacts a valve bridge, and the valve bridge contacts a valve push rod mechanism. The invention is suitable for an overhead camshaft mechanism, and the structure is simplified since the valve support column, the push rod and other parts connected with the cam are reduced. The rocking arm forms a zero-clearance fit with the camshaft and the valve push rod, thereby lowering the noise. On the premise of enhancing the strength of the engine block, cylinder head and the like, the volume of the engine is reduced, so that the structure is more compact reasonable, and the economical efficiency and power performance of the engine are enhanced.

The position and the compositor project on the infusion apparatus for a universal exhaust case and a flux adjuster, are characterized by including an exhaust filter (1), a universal exhaust case (2), a flux adjuster (3) and a gravity type transfusion pipeline (5), wherein the exhaust filter (1), the universal exhaust case (2) and the flux adjuster (3) are in series mounted on the gravity type transfusion pipeline (5) according to the special position and sequence. The exhaust filter (1) and the universal exhaust case (2) are mounted on the upstream direction of the flux adjuster (3), and the exhaust filter (1) is provided on the upstream of the universal exhaust case (2). A plurality of tubes composed of a transfusion slot (17) and a capillary exhaust film (11) are arranged in the universal exhaust case (2) and in parallel. The V-shape exhaust hole on the exhaust filter (1) are in V-shape, and the central extruding surface points to the gas gathering discharge chamber (20) in the exhaust filter (1). The invention prevents the pumping back air permeating the exhaust film from entering the transfusion pipeline, meanwhile realizing the reliable exhaust function at each angle of each posture, finally overcomes the problem of dead angle pneumatosis.

The invention belongs to the technical field of buffer material building block preparation, and particularly relates to an exhaust method used for buffer material building block preparation and capable of ensuring the building block pressing quality. An exhaust device for buffer material building block preparation comprises exhaust holes (1), a male die (2), a female die (3), bentonite powder (4),a press machine pressure-bearing plate (5), a screw rod (6), a filter rod (7) and a sealing ring (8). The exhaust method comprises the following steps: 1, exhaust hole forming; 2, exhaust device machining; 3, exhaust hole mounting; and 4, exhaust and maintenance. The exhaust method for buffer material building block preparation has the beneficial effects that (1) discharge of the bentonite powdercan be effectively blocked while the exhaust function is achieved, and the pressing quality and efficiency are improved; and (2) the exhaust device is consistent with the pressing dies in material, potential corrosion of metal is effectively prevented, and the service life is prolonged.

The invention provides a total-pressure high-speed exhaust valve, which comprises a cylinder, a main valve cavity, an air guide and exhaust barrel, a sealing floating body, a piston spring and a main valve piston. The main valve cavity is arranged on the lower part of the cylinder; the air guide and exhaust barrel is arranged in the main valve cavity; the sealing floating body is arranged in the air guide and exhaust barrel; the main valve piston is provided with a vertical through hole; the main valve piston comprises a piston column, a cylinder piston and a sealing baffle plate, the cylinder piston and the sealing baffle plate are respectively arranged at the upper end and the lower end of the piston column, an air exhaust and supplement opening is formed in the side wall of the lower part of the cylinder, and a main valve port is formed in the cavity wall of the main valve cavity; the piston spring is sleeved on the piston column and is positioned between the cylinder piston and the upper cavity wall of the main valve cavity; and the upper end of the sealing floating body corresponds to a lower port of the vertical through hole of the main valve piston. The total-pressure high-speed exhaust valve has the advantages that the design is scientific, and the valve can be automatically sealed without the aid of a floating ball or a lever when the inside of a pipe has water.

The invention discloses a glue coating method and its application which are beneficial to the bonding and exhausting of plastic films or sheets. distribution, so that the bonding surface forms a glue-free channel, and the glue-free channel has at least one vent. The invention is easy to operate, so that the gas between the plate and the film layer cannot be accumulated and discharged in time, the problem of bubbling is completely solved, and the production is greatly facilitated.

The invention relates to a rotary valve mechanism of an internal combustion engine, which is characterized in that a cylindrical and tubular air inlet (outlet) pipe is arranged on a cylinder cover at the upper part of a combustion chamber and is communicated with the combustion chamber, and a cylindrical and tubular intake (exhaust) valve is arranged in the air inlet (outlet) pipe and is closely attached with the combustion chamber on the cylinder cover so as to achieve the function of sealing an air cylinder; the valve is driven to rotate by a crank shaft through a sprocket wheel, and an opening is arranged at the corresponding part of the valve; when the valve needs to be opened, the opening is rotated to the position that the opening is be communicated with the combustion chamber, and the operations of air intake and exhaust are carried out between the air cylinder and the inner cavity of the valve through the opening; the valve which is arranged in the air inlet (outlet) pipe and is caused to come in contact with the combustion chamber during rotation is not provided with other holes, thereby causing the air to continuously and smoothly flow into (flow out from) the inner cavity of the valve through the air inlet (outlet) pipe and achieving the functions of air intake and exhaust of the mechanism. The rotary valve mechanism of the internal combustion engine has the advantages of smooth air intake and exhaust, high air exchange efficiency and low energy loss.

The present invention provides an antistatic bag, which includes a bag body, a first heat-sealing strip, a second heat-sealing strip and a third heat-sealing strip, the bag body includes a first bag surface and a second bag surface, and the first heat-sealing strip The sealing strip, the second heat-sealing strip and the third heat-sealing strip are connected end-to-end in sequence and are respectively arranged on three sides connecting the first bag surface and the second bag surface, the first heat-sealing strip includes a plurality of first connecting strips arranged at intervals, A first exhaust hole is formed between two adjacent first connecting strips. When the anti-static bag is folded and sealed, the excess gas in the anti-static bag can be discharged from the first vent hole, so as to avoid the decrease in space utilization rate during transportation or storage due to the excessive volume of the anti-static bag after packaging electronic products And other issues.

The invention discloses a fan which comprises a shell, an air gathering barrel, main fan blades and a driving mechanism. The main fan blades are located in the air gathering barrel and driven by the driving mechanism to work. The driving mechanism is located in the shell. The air gathering barrel comprises a fixed barrel and an automatic rotating barrel. The fixed barrel is fixed to one side of the shell. The automatic rotating barrel is in sliding connection with the fixed barrel through multiple steel balls. Auxiliary fan blades are fixed to the inner wall of the automatic rotating barrel. According to the fan, agents or water is vaporized to be sprayed out through an annular vaporization pipe, the vaporized agents or water is blown into a cultivation chamber through rotation of the fanblades, and the function of cooling or disinfecting the cultivation chamber is achieved.

The invention discloses a cyclone type flashing drying machine for oilseed rapes. The cyclone type flashing drying machine comprises a drive mechanism, a high-pressure centrifugal fan, a spiral-plate type hot blast heater, a valve type feeding device, a drying device, a cyclone collection device and a star-type discharging device. An air outlet of the hot blast stove is connected with the lower end of a pipe of the valve type feeding device and an inlet of an annular channel at the bottom end of a drying cylinder. The top of the cyclone collecting device is provided with a spiral airflow inlet pipe and an air guide and outlet pipe which are connected with the drying device and an inlet pipe of a fan. The lower end of the cyclone collection device is connected with the star type discharging device through a trapped pipe on the lower portion of the cyclone collection device. The spiral plate type hot blast stove comprises a spiral plate type heat exchanger which is provided with at least a pair of spiral channels arranged in a spaced manner so that cold fluid and heat fluid can flow helically and flow upwards in two runners respectively. By means of the structure, the heat utilization rate is high, and clean airflow can be obtained; meanwhile the valve type feeding device is adopted, no devices for stirring, chopping and the like are adopted, and the quality and integrity of material particles in the feeding and drying processes when the drying machine operates are guaranteed.

The invention relates to a hydraulic braking system for solving the problem of inconvenience for exhausting in a traditional vehicle hydraulic brake. The vehicle hydraulic braking system comprises a braking gas supply device, a braking valve, an assistor, a hydraulic control one-way valve and a brake set; the assistor is integrated with a hydraulic control switch valve and a second one-way valve; the braking gas supply device is connected with an inlet of the braking valve; the braking valve, the assistor, the hydraulic control one-way valve and a braking liquid inlet of the brake set are serially connected in sequence; a braking liquid outlet of the brake set is connected with a return port of the assistor; and the hydraulic control switch valve integrated on the assistor uses the assistor for braking the braking hydraulic force of a piston front cavity to control connection and disconnection of a braking liquid oil return access port. In the vehicle hydraulic braking system, the braking gas supply device, the braking valve, the assistor braking liquid outlet, the hydraulic control one-way valve, the brake set and the assistor return port are connected in sequence to finish automatic circulation of braking liquid; the exhausting of the brake set is realized in the circulating process; and the temperature of the braking liquid is lowered to a certain extent.

The invention relates to brake systems, and provides a car brake and heat radiation system to solve the problem of inconvenient heat radiation of an existing car hydraulic brake. The car brake and heat radiation system comprises a brake gas supply device, a brake pedal, a brake valve, assistors, hydraulic control one-way valves, brake sets, brake liquid storage boxes, an angle sensor, power sources, controllers, two-position two-way solenoid valves, heat radiation fans, heat radiators, second one-way valves, temperature sensors and pressure sensors. A brake liquid outlet of each assistor is connected with a brake liquid inlet of the corresponding brake set through the corresponding hydraulic control one-way valve, and each heat radiator and the corresponding two-position two-way solenoid valve are sequentially connected between a brake liquid outlet of the corresponding brake set and the corresponding brake liquid storage box in series. A brake liquid supplementary opening of each assistor is connected with the corresponding brake liquid storage box. The control ends of the two-position two-way solenoid valves and the angle sensor are connected with the controllers. In the car brake and heat radiation system, in the process of loosening the brake pedal after brake of every time, after the brake pedal resets to a certain angle, the two-position two-way solenoid valves are connected, part of brake liquid in brakes passes through the heat radiators and the two-position two-way solenoid valves to enter the brake liquid storage boxes, and the heat radiation function of the brakes is achieved.

The invention relates to a medical trachea interface and an installing method thereof. The medical trachea interface comprises an air inlet tube, an air outlet tube arranged outside the air inlet tube in a sleeving mode, a first module which is detachably arranged at one end of the air outlet tube and connected with the air inlet tube and can be designed modularly, and a second module which is detachably arranged at the other end of the air outlet tube and connected with the other end of the air inlet tube and can be designed modularly. The medical trachea interface can simultaneously achieve an air intake and air exhausting functions and is good in air impermeability. In addition, the modular design enables the medical trachea interface to be simple in structure, enables each module to be separately replaced and facilitates the configuration and deformation design of the medical trachea interface.

The invention belongs to the technical field of buffer material block preparation, and in particular relates to an exhaust method for buffer material block preparation that ensures the pressing quality of the block; the exhaust device for buffer material block preparation includes an air vent (1), a punch (2), die (3), bentonite powder (4), press bearing plate (5); screw rod (6), filter rod (7) and sealing ring (8), wherein, described method comprises the following steps Step 1, exhaust hole layout; Step 2, exhaust device processing; Step 3, exhaust hole installation; Step 4, exhaust and maintenance; the beneficial effects of the present invention are: (1) a buffer provided by the present invention The exhaust method for the preparation of material blocks can effectively block the discharge of bentonite powder while realizing the exhaust function, and improve the pressing quality and efficiency; (2) the exhaust method for the preparation of a buffer material block provided by the invention, which The material of the exhaust device is the same as that of the pressing mold, which can effectively prevent the potential corrosion of the metal and increase the service life.

The invention relates to brake systems, and provides a car brake and heat radiation system to solve the problem of inconvenient heat radiation of an existing car hydraulic brake. The car brake and heat radiation system comprises a brake gas supply device, a brake pedal, a brake valve, assistors, hydraulic control one-way valves, brake sets, brake liquid storage boxes, an angle sensor, power sources, controllers, two-position two-way solenoid valves, heat radiation fans, heat radiators, second one-way valves, temperature sensors and pressure sensors. A brake liquid outlet of each assistor is connected with a brake liquid inlet of the corresponding brake set through the corresponding hydraulic control one-way valve, and each heat radiator and the corresponding two-position two-way solenoid valve are sequentially connected between a brake liquid outlet of the corresponding brake set and the corresponding brake liquid storage box in series. A brake liquid supplementary opening of each assistor is connected with the corresponding brake liquid storage box. The control ends of the two-position two-way solenoid valves and the angle sensor are connected with the controllers. In the car brake and heat radiation system, in the process of loosening the brake pedal after brake of every time, after the brake pedal resets to a certain angle, the two-position two-way solenoid valves are connected, part of brake liquid in brakes passes through the heat radiators and the two-position two-way solenoid valves to enter the brake liquid storage boxes, and the heat radiation function of the brakes is achieved.

The invention discloses a saliva collector with an exhaust function and an injection molding process thereof; a collection funnel is composed of a funnel and a connecting sleeve provided with an internal thread, a collection tube is provided with an external thread corresponding to the internal thread, and the internal thread and the external thread are non-sealing tube threads; the upper end opening of the connecting sleeve is fixedly connected to the periphery of the outer wall of the lower portion of the funnel in the circumferential direction, a plurality of annularly-distributed limiting blocks are arranged around the periphery of the outer wall of the lower portion of the funnel, and a notch is formed between every two adjacent limiting blocks; the limiting block is located between the upper end opening of the connecting sleeve and the top of the internal thread, and the position of the lower edge of the limiting block is higher than the position of the funnel outlet, so that the funnel outlet extends downwards to the position below the notch. The notch and the internal and external threads form an exhaust channel, so that unsmooth exhaust cannot be caused. The liquid is effectively prevented from being discharged along with the gas while the gas is exhausted, and the production cost is hardly increased. And the production rejection rate is not higher than one hundred thousandth through a specific injection molding process parameter system.

The invention discloses a magneto-rheological brake exhauster and an application method thereof. The magneto-rheological brake exhauster comprises a connecting device, a bolt, a nut, a stop washer, and an O-shaped seal ring. The nut and the stop washer are mounted outside a shell, and the O-shaped seal ring is mounted inside. The magneto-rheological brake exhauster is simple in structure and allows gas in a magneto-rheological brake cavity to be effectively discharged; the process of filling the magneto-rheological brake cavity with magneto-rheological fluid is easier, and braking efficiency of a magneto-rheological brake is improved.

The invention provides an intake and exhaust rotary valve of an internal combustion engine. The rotary valve comprises a valve cover, a valve body and a shaft, wherein the valve cover seals and coversthe valve body, a second through groove of the valve cover is matched with a first through groove of the valve body to form a shaft placing channel, the shaft is arranged in the shaft placing channelin a matched mode and can rotate, when the shaft rotates by a certain angle, two ends of an air inlet channel of the shaft are communicated with a second air inlet hole of the valve cover and a firstair inlet hole of the valve body in an aligned mode respectively, or two ends of an air outlet channel of the shaft are communicated with a second air outlet hole of the valve cover and a first air outlet hole of the valve body in an aligned mode respectively. The rotary valve is simple in structure and convenient to use, and air intake and air exhaust are conducted independently.

The invention relates to a hydraulic braking system for solving the problem of inconvenience for exhausting in a traditional vehicle hydraulic brake. The vehicle hydraulic braking system comprises a braking gas supply device, a braking valve, an assistor, a hydraulic control one-way valve and a brake set; the assistor is integrated with a hydraulic control switch valve and a second one-way valve; the braking gas supply device is connected with an inlet of the braking valve; the braking valve, the assistor, the hydraulic control one-way valve and a braking liquid inlet of the brake set are serially connected in sequence; a braking liquid outlet of the brake set is connected with a return port of the assistor; and the hydraulic control switch valve integrated on the assistor uses the assistor for braking the braking hydraulic force of a piston front cavity to control connection and disconnection of a braking liquid oil return access port. In the vehicle hydraulic braking system, the braking gas supply device, the braking valve, the assistor braking liquid outlet, the hydraulic control one-way valve, the brake set and the assistor return port are connected in sequence to finish automatic circulation of braking liquid; the exhausting of the brake set is realized in the circulating process; and the temperature of the braking liquid is lowered to a certain extent.

A wall hanging type microwave oven comprises: a body disposed on a building wall, in which a cooking chamber and an electric component chamber separated with each other are provided; an exhaust path for discharging the gas generated from a gas oven range installed below the body, separating from the cooking chamber and the electric component chamber, and making a lower section of the body communicate with an upper section of the body; a cooling ventilation path for cooling the electric component chamber and ventilating the cooking chamber, communicating a front section of the body with the upper section of the body via the exterior electric chamber and the exterior cooking chamber; an exhaust fan installed in the upper portion of the body to make air flow through the ventilation path, and the cooling exhaust path. The wall hanging type microwave oven is provided to perform exhaustion of the gas oven range, cooling of the electric component chamber, and ventilation of the cooking chamber through the exhaust fan in the rear upper portion, thus, the air circulation construction is improved.

The invention provides a total-pressure high-speed exhaust valve, which comprises a cylinder, a main valve cavity, an air guide and exhaust barrel, a sealing floating body, a piston spring and a main valve piston. The main valve cavity is arranged on the lower part of the cylinder; the air guide and exhaust barrel is arranged in the main valve cavity; the sealing floating body is arranged in the air guide and exhaust barrel; the main valve piston is provided with a vertical through hole; the main valve piston comprises a piston column, a cylinder piston and a sealing baffle plate, the cylinder piston and the sealing baffle plate are respectively arranged at the upper end and the lower end of the piston column, an air exhaust and supplement opening is formed in the side wall of the lower part of the cylinder, and a main valve port is formed in the cavity wall of the main valve cavity; the piston spring is sleeved on the piston column and is positioned between the cylinder piston and the upper cavity wall of the main valve cavity; and the upper end of the sealing floating body corresponds to a lower port of the vertical through hole of the main valve piston. The total-pressure high-speed exhaust valve has the advantages that the design is scientific, and the valve can be automatically sealed without the aid of a floating ball or a lever when the inside of a pipe has water.

The position and the compositor project on the infusion apparatus for a universal exhaust case and a flux adjuster, are characterized by including an exhaust filter (1), a universal exhaust case (2), a flux adjuster (3) and a gravity type transfusion pipeline (5), wherein the exhaust filter (1), the universal exhaust case (2) and the flux adjuster (3) are in series mounted on the gravity type transfusion pipeline (5) according to the special position and sequence. The exhaust filter (1) and the universal exhaust case (2) are mounted on the upstream direction of the flux adjuster (3), and the exhaust filter (1) is provided on the upstream of the universal exhaust case (2). A plurality of tubes composed of a transfusion slot (17) and a capillary exhaust film (11) are arranged in the universal exhaust case (2) and in parallel. The V-shape exhaust hole on the exhaust filter (1) are in V-shape, and the central extruding surface points to the gas gathering discharge chamber (20) in the exhaust filter (1). The invention prevents the pumping back air permeating the exhaust film from entering the transfusion pipeline, meanwhile realizing the reliable exhaust function at each angle of each posture, finally overcomes the problem of dead angle pneumatosis.

The invention discloses an integrated electro-hydraulic servo driver hydraulic system which comprises a drive motor, a hydraulic pump, a first check valve, a second check valve, an electromagnetic reversing valve, an overflow valve, a servo valve, a hydraulic cylinder, a sealed boosting oil tank and a first throttling valve. The drive motor is connected with the hydraulic pump. The oil outlet of the hydraulic pump is connected with the first check valve. The first check valve is divided into three liquid ways at the same time. The first liquid way is connected with the port P of the electromagnetic reversing valve. The port T of the electromagnetic reversing valve is connected with the second check valve. The second liquid way is connected with the port P of the overflow valve. The port T of the overflow valve is connected with the second check valve. The third liquid way is connected with the port P of the servo valve. The port T of the servo valve is connected with the second check valve. The port A and the port B of the servo valve are communicated with the port A and the port B of the hydraulic cylinder respectively. The second check valve is sequentially connected with the sealed boosting oil tank and the port P of the first throttling valve. The port T of the first throttling valve is connected with the oil sucking opening of the hydraulic pump. The hydraulic system is not prone to heating and can stand by for a long time.

The invention discloses a fuel injection mechanism of a vehicle-mounted gas bottle of a liquefied natural gas vehicle. The mechanism comprises a liquefied natural gas charging panel rack with pressure gauge and a liquefied natural gas carrying bottle, wherein the technical key points are that: a vehicle-mounted gas bottle emptying valve, a charging station pipeline emptying valve and a charging valve are connected in series in the liquefied natural gas charging panel rack in turn; an output end of the charging valve is communicated with the liquefied natural gas carrying bottle through a liquid inlet pipeline; the liquefied natural gas carrying bottle is communicated with an input end of the vehicle-mounted gas bottle emptying valve through an emptying pipeline; a gas return pipe for emptying the liquefied natural gas in gas phase is arranged between the vehicle-mounted gas bottle emptying valve and the charging station pipeline emptying valve; and a charging pipe for feeding the liquefied natural gas liquid is arranged between the charging station pipeline emptying valve and the charging valve. The mechanism has the advantages of separately controlling charging and exhausting by means of three valves, completely replacing an injection gun to realize corresponding functions and reducing production cost, along with simple structure, easy manufacturing and easy configuration for the charging station.