129results about How to "Space saving location" patented technology

The invention provides a backlight module with a narrow frame of a liquid crystal display device. The backlight module comprises the frame, a back plate, a connection piece and a rubber frame which is arranged on the back plate; the frame comprises a bottom plate opposite to a front panel; the front panel of the frame concaves inwards to form a first tapping hole with an inner thread; the bottom plate of the back plate is provided with a hole part corresponding to the tapping hole; the rubber frame is provided with a through hole corresponding to the hole part; the connection part passes through the through hole; and both ends are respectively in a fit connection with the first tapping hole on the front panel of the frame and the hole part on the bottom plate of the back plate so that the frame is locked with the back plate. According to the backlight module provided by the invention, space positions of the rubber frame and the back plate are saved; meanwhile, material is avoided be cut by the rubber frame in a large area to avoid convex hulls on the frame and the back plate, therefore, the structure intensity of the rubber frame is ensured, and the frame of the backlight module is easy to narrow.

The invention discloses a plant mural device which comprises an open box body. An upper water slot, a plant shelf and a lower water slot are arranged in the open box body from top to bottom. The plant shelf is used for fixing plants; and the plants are planted into a culture medium coated by an ecological bag manufactured by manual cloth. In the plant mural device, fresh and alive flowers and grasses can be combined into a plurality of graphs according to the design thoughts of users according to demands; moreover, the plants are very convenient to replace without taking down an outer box body.

The invention relates to field of atmosphere pollution control and treatment, especially relates to a process of multiple circulate and stable flue gas desulfurization by means of double aluminium subsulfate. It is characterized in that it comprises: desulfurizing absorption liquid internal cycle, external cycle, internal cycle of desulfurizing slag, internal cycle of desulfurizing agent, and external cycle of desulfurizing salg. The invention also relates to the device for said process. THe invention is characateized by stable process, low investment, high desulfurizing rate and low operating cost.

The invention discloses a ship direct current networking system adopting fuel cells and a ship applying the same. The ship direct current networking system adopting fuel cells has the working principle that a fuel cell stack is regarded as a main power device of the ship, and a storage battery is regarded as the auxiliary power supply device, the storage battery and the fuel cell stack form a shipdirect current network; the electric energy generated by a wind generating set is output to an electrolytic tank to produce hydrogen by electrolysis of seawater; the surplus electric energy is storedin the storage battery; the electric energy generated by photovoltaic cells is output to the electrolytic tank to produce the hydrogen by electrolysis of the seawater; and the surplus electric energyis stored in the storage battery, and the wind energy and solar energy are used to convert the electric energy into clean hydrogen energy, so that the power of the power supply of the ship power system is all from new energy, and the problem of wind and light abandonment is solved to a certain extent, the utilization efficiency of new energy is improved, and the operation cost of the ship is reduced. According to the ship direct current networking system adopting fuel cells and the ship applying the same, wind power generation and photovoltaic power generation are linked through hydrogen production from electrolyzed water, so that the grid connection control of wind power generation and photovoltaic power generation is omitted, and the grid connection consumption of ship power grid for new energy generation does not need to be considered.

The invention discloses a generator control system of a range-extended electric car, which comprises an engine of which an ignition circuit is connected to a car controller, and is characterized in that a left crank shaft and a right crank shaft are connected to a left rotor and a right rotor of the engine respectively; the stator of the engine is connected with an output control module of the generator, which is further connected with the car controller; the car controller is connected with a mode-I key and a mode-II key; and the direct output end of the output control module of the generator is connected with an electric motor controller, and the output end of the electric motor controller is connected to the electric motor. The invention has the following beneficial effects: the generator is smaller in spatial dimensions, so as to facilitate the layout of a small electric car and reduce the manufacturing cost; the generator control system is favor of balancing the crank shafts of the engine, reduces the vibration of the engine and improves the overall comfort of the car; and the generator control system is suitable for requirements of various automobile models and makes effective and reasonable use of electric energy resources.

The invention provides a plate turning-over type sorting device which comprises a rack (8) and transmission devices (7) arranged on the two sides of the rack (8). The transmission devices (7) drive a guide rail of a guide rail pair (4) to move. The guide rail of the guide rail pair (4) is connected with a support (3). A material plate (1) is hinged to the support (3). A switch device (6) is fixed to each sorting port in the rack (8). An expansion bolt (5) is arranged on a sliding block of the guide rail pair (4). The sliding block of the guide rail pair (4) is hinged to the material plate (1) through a hinged connecting rod (2). The expansion bolt (5) is fixed on the sliding block of the guide rail pair (4). Each switch device (6) is composed of a main track (9), a branch track I (10), a branch track II (11) and a reversing block (12), wherein the branch track I (10) and the branch track II (11) are located on the two sides of the main track (9) respectively and provided with open angles. One reversing block (12) is arranged between every two main tracks (9). The plate turning type sorting device is designed for small irregular articles not prone to breaking, and has the advantages of being low in manufacturing cost, convenient to maintain and suitable for application and popularization, energy sources are saved, and the spatial arrangement is flexible.

The present invention relates to massage device, and is especially one massage device with massage mechanism and walking mechanism for massage back and waist of human body. The massage device capable of completing several massage actions is provided with kneading motor, kneading transmission mechanism, gearbox, fixed shaft, crank-block mechanism and massage wheels. It simulates hand to massage mechanically, and has the advantages of less noise, small size, simple structure, great kneading force, etc.

The invention discloses an oppositely penetrating steel bar and oppositely penetrating vertical insert plate type beam column two-way rigid joint. Insert plates and horizontal steel bars are inserted into a concrete-filled steel tube column in the two mutual vertical directions. The two ends, penetrating through the concrete-filled steel tube column, of each insert plate are both connected with corresponding insert plate brackets which are in butt joint with steel beams fixedly through connecting plates. The two ends, penetrating through the corresponding insert plate and the concrete-filled steel tube column, of each steel bar are in butt joint with the steel beams fixedly through end plates or steel bar brackets. In the insert plate brackets, the insert plates are connected to the middle of one end of an upper insert plate bracket flange and one end of a lower insert plate bracket flange in an inserting mode. Insert plate bracket webs are connected between the other ends of the two insert plate bracket flanges and butt joint with the insert plates on the same plane. The steel bars are welded to steel bar bracket flanges at the four corners of steel bar bracket webs. The oppositely penetrating steel bar and the oppositely penetrating vertical insert plate type beam column two-way rigid joint can meet the force transmission requirement for the beam column rigid joint and be widely applied to rigid connection of the H-shaped steel beams with the concrete-filled steel tube column; the structure is simple, force transmission is clear and definite, machining is convenient and rapid, and concrete pouring is easy.

The invention relates to an electric automobile automatic charging system and method based on an automatic mechanical arm. The system comprises a stall detection device arranged under the ground of a parking space, a charging device arranged beside the parking space, the automobile-mounted mechanical arm installed on an electric automobile, a region control device which is in wireless communication connection with the charging device and the stall detection device and is used for acquiring real-time state information of the charging device and the stall detection device and controlling the charging device and the stall detection device, an automobile-mounted control device connected with the electric automobile and the automobile-mounted mechanical arm and used for acquiring real-time state data of the electric automobile and controlling the mechanical action and electrical performance of the automobile-mounted mechanical arm, and a backstage management center which is in wireless communication connection with the automobile-mounted control device and the region control device and is used for acquiring data acquired by the automobile-mounted control device and the region control device and issuing control commands. Compared with the prior art, the electric automobile automatic charging system and method have the beneficial effects that a domestic gap is filled in, and the system and method have the important significance in promotion of electric automobile technology development.

The invention discloses a 3D scanning, printing and laser engraving integrated machine. The integrated machine comprises three stand columns, an upper tripod, a lower tripod, a scanner, a printing head and a laser head, wherein the upper tripod is arranged at the top ends of the stand columns, and the lower tripod is arranged at the bottoms of the stand columns; the scanner is installed in the middles of the stand columns which are provided with guide rails, a slider is installed on the guide rails in a sliding mode, a wire feeding motor and a stepping motor are installed on the upper tripod, and the stepping motor drives the slider to move on the guide rails in the vertical direction; the slider is connected with a carbon fiber tube, the other end of the carbon fiber tube is connected to a fixing block, and the printing head and the laser head are fixed to the lower portion of the fixing block; a control panel is arranged on the lower tripod, a rotating platform is installed on the upper portion of the lower tripod and rotates forwards and reversely through a rotating platform driving motor. The integrated machine integrates 3D scanning, printing and laser engraving, and spatial position is saved while multiple functions are achieved; operation is convenient, and more operation time is saved.

The invention relates to a folding automatic charging mechanical arm and an electric vehicle vehicleried with the mechanical arm. The mechanical arm is arranged at the bottom of the electric vehicle, and charging of the electric vehicle is achieved by plugging the mechanical arm into a socket. The mechanical arm comprises a swing arm fixing plate, a head joint, a connection plate, a parallel joint unit, a plug and a camera, wherein one end of the swing arm fixing plate is fixed to the bottom of the electric vehicle; one end of the head joint is connected with the other end of the swing arm fixing plate so that the mechanical arm can rotate around the head joint; the connection plate is an inverted U-shaped strip slot, and is connected with the head joint; the parallel joint unit is connected with the connection plate in a sliding mode; the parallel joint unit is located in the connection plate when the electric vehicle is not charged, and extends out of the connection plate and rotates around parallel joints when the electric vehicle needs to be charged; the plug is mounted at the tail end of the parallel joint unit; and the camera is mounted on one side face of the plug. Compared with the prior art, automatic charging is realized, a charging device is small in size, and using is convenient. The vehicle-mounted automatic charging mechanical arm fills up the blank in China and is of great significance on promoting the technological development of electric vehicles.

The invention discloses a telescopic water pipe with an air inflation device. The telescopic water pipe comprises an elastic inner pipe and a protection outer sleeve. The elastic inner pipe is sleevedand connected with the protection outer sleeve, and an inner-outer dual pipe structure is formed. An airtight space is formed between the elastic inner pipe and the protection outer sleeve. The telescopic water pipe is provided with the air inflation device. The air inflation device is used for inflating air to the airtight space. Since the elastic inner pipe is likely to be damaged due to friction constantly produced between the elastic inner pipe and the protection outer sleeve, the service life of the telescopic water pipe is greatly shortened. According to the main design thought, the telescopic water pipe is provided with the air inflation device, the air inflation device can inflate air into the airtight space, the elastic inner pipe and the protection outer sleeve make no contact in the using process of the air-inflated telescopic water pipe, accordingly, constant telescopic friction between the elastic inner pipe and the protection outer sleeve is avoided, friction force between the elastic inner pipe and the protection outer sleeve is reduced to the minimum as far as possible, accordingly, thinning and damage of the elastic inner pipe are greatly avoided, and the servicelife of the telescopic water pipe is ensured and prolonged.

The invention belongs to impact equipment and particularly relates to an impactor of an acoustic noise online monitoring system for mounting of loose parts and dropping parts on reactor equipment in a nuclear power station. The impactor comprises a handle end cap, a control rod, a cylinder-beating spring, a return spring, a rotation shaft, a contact head and other parts, can be used for generating four types of impact energy of 4.68J, 2.74J, 1.48J and 0.17J, positioning the impact energy accurately and adjustably and simulating the acoustic noises generated by the loose parts and the dropping parts in a pressure vessel, a return pipeline, a heat exchanger, a steam generator and other equipment in the nuclear power station under the fluid impact, can meet the requirements of a service environment for high environment temperature, small spatial location and high radioactivity level in the nuclear power station, and is favorable for solving the problems of on-site testing and calibration of a loose part monitoring system of the nuclear power station. The impactor provided by the invention can also be applied to the non-nuclear field.

The invention discloses an automatic kettle body and upper connector assembly machine which comprises a kettle body pre-positioning mechanism for rotating kettle bodies to preset positions, a kettle body transfer mechanism for transferring the pre-positioned kettle bodies to different assembly lines, a kettle body feed mechanism for transferring the pre-positioned kettle bodies to the kettle body transfer mechanism, a kettle bottom dispensing mechanism for dispensing heat conduction silicone grease to kettle bottoms, an upper connector conveying mechanism for conveying and positioning upper connectors to upper connector assembly positions on the kettle bodies, a screw locking mechanism for assembling and fixing the upper connectors on the kettle bottoms, a lock floating detection mechanism for detecting if screws have a lock floating phenomenon, and a blanking and conveying mechanism for removing assembled qualified products and unqualified products from the assembly lines. The automatic assembly machine raises an automation degree of the kettle manufacturing industry, improves production efficiency and product quality, and also lowers labor cost.

The invention relates to the technical field of cold chain transportation and more particularly relates to a goods shelf moving type vehicle-mounted multi-temperature automatic co-delivery refrigerating cabinet. According to the technical scheme, the goods shelf moving type vehicle-mounted multi-temperature automatic co-delivery refrigerating cabinet is characterized by comprising a cabinet body with one side opened; two separation bars are vertically arranged at the opening part of the cabinet body, and an inner cavity of the cabinet body is divided into two first containing grooves and a second containing groove through the two separation bars; the second containing groove is located between the two first containing grooves, and a first guide rail groove is formed in the middle portion of the groove bottom of each first containing groove in the length direction; second guide rail grooves are formed in the two sides of the bottom face of the second containing groove in the length direction; outer goods shelves are connected to the first guide rail grooves in a sliding manner, and the bottom walls of the outer goods shelves are connected with bearing wheels which extend out of theouter sides of the first containing grooves; and a movable goods shelf mechanism is connected to the second guide rail grooves in a sliding manner, and heat insulation partition plates are arranged between the outer goods shelves and the movable goods shelf mechanism. The goods shelf moving type vehicle-mounted multi-temperature automatic co-delivery refrigerating cabinet has the beneficial effects that during multi-temperature-area goods storing and goods delivering, heat insulation effectiveness is good, storage integration is achieved, and automatic goods taking is achieved.

The invention discloses a narrow space bolt positioning and installing robot and a control method. The narrow space bolt positioning and installing robot comprises an installing platform, a fixing plate, a tool fixture, an industrial robot, a movement module and a controller. The control method comprises the steps of firstly moving a bolt and a washer to an axis position of a driven gear, supporting the bolt and the washer through a spring force, then downwards moving a connecting block, installing the bolt onto the driven gear, and resetting a spring to fix the bolt; then vision guiding for avoiding obstacles through a camera, and sending the fixture to a preset position capable of shooting a thread hole through a robot arm; and adopting the robot for automatically positioning a target thread hole, sending the position of the thread hole to the robot arm and locking the position, rotating the fixture to enable the bolt to align at the thread hole, starting to move downwards under the drive of the gear, stopping the assembling of the first bolt when a sensor touches a bottom plate, automatically carrying the robot to a preset position of a next thread hole through a module motor, and carrying out the next round of assembling until all assembling is finished.

The invention discloses a device and a method for realizing aircraft flow control based on a plasma exciter. The device comprises a dielectric barrier discharge exciter, a plasma synthetic jet exciter, an insulating medium and a high-voltage power supply, the dielectric barrier discharge exciter comprises a high-voltage electrode block and a grounding electrode block; the plasma synthetic jet exciter comprises a first electrode bar and a second electrode bar, the insulating medium is penetrated by the first hole and the second hole, the high-voltage electrode block is located on the upper surface of the insulating medium, the grounding electrode block is located in the insulating medium, an internal cavity of the second hole forms an exciter cavity, and the first electrode bar and the second electrode bar respectively extend into the exciter cavity from the insulating medium. Jet flow generated by the dielectric barrier discharge exciter can be used for controlling separation of a flowfield on the surface of an aircraft, reducing flight resistance and improving lift force; jet flow generated by the plasma synthetic jet flow exciter can be used for changing the flight attitude of the aircraft and providing thrust required by flight.

The invention discloses a hydraulic integral-type tensioning ring of a water separation tube. The hydraulic integral-type tensioning ring comprises a carrying body. An inner circle footstep is arranged at the upper end of the carrying body, the carrying body is concentrically connected with an outer casing of a well drilling splitter through a connection lockpin assembly, an outer circle of the carrying body is provided with an upper outer circle footstep and a lower outer circle footstep, a pressure-bearing ring is sleeved on the biggest periphery of the carrying body, an upper end footstep and a lower end footstep are arranged on the inner surface of the pressure-bearing ring, and a wearing ring and a rotation seal II are arranged between the pressure-bearing ring and the biggest periphery of the carrying body. A detachable pressing cover is arranged in the upper end footstep, and the pressing cover simultaneously covers on the upper outer circle footstep of the carrying body. A pressure-bearing gasket is arranged on the upper surface of the lower end footstep, a rotation seal I is installed between an inner peripheral surface of the lower end footstep and the carrying body, and a hydraulic channel is arranged inside the carrying body. The hydraulic integral-type tensioning ring is applicable to operation in deepwater and ultra-deepwater environments, and is big in carrying force, convenient and rapid to install, simple in operation, safe and reliable.

The embodiment of the invention provides a mobile device and a robot. The moving device comprises a chassis, a driving wheel mechanism and a steering control mechanism, the driving wheel mechanism comprises a driving wheel mounting bracket, and the driving wheel mounting bracket is rotatably mounted on the chassis. The steering control mechanism comprises a steering support and a support driving assembly, and the steering support is slidably mounted on the chassis and connected with the driving wheel mounting support. The steering support comprises a rack, the support driving assembly comprises a driving motor and a driving gear, the driving motor drives the driving gear to rotate, and the driving gear is meshed with the rack. The driving gear rotates to drive the rack to move so as to drive the steering support to slide relative to the chassis, and the steering support slides relative to the chassis to drive the driving wheel mounting support to rotate relative to the chassis, so thatpivot steering of the driving wheel mechanism can be achieved, the minimum turning radius of the moving device is zero, and transverse movement of the moving device is facilitated.

The invention provides a high-temperature-pressure-resistant double-direction rigidity seal rotary ball valve with a pretension compensation movable valve seat, and the rotary ball valve comprises a valve body, a valve rod, a jacking rod and a valve clack. It is presumed that the center line of the valve body is arranged in the horizontal direction from left to right, the valve rod stretches into the valve body from top to bottom, and the valve rod is rotatably connected with the valve body through a sealing assembly; the jacking rod stretches into the valve body from bottom to top in the radial direction of the valve body, and the jacking rod is fixedly connected with the valve body; the lower end of the valve body is provided with a bottom cover and a sealing gasket, wherein the bottom cover and the sealing gasket are used for blocking the jacking rod; the center line of the valve rod and the center line of the jacking rod are overlapped; and the valve clack is arranged inside the valve body, the lower end of the valve rod is fixedly connected with the upper portion of the left side of the valve clack, the lower portion of the left side of the valve clack is rotatably connected on the jacking rod through a shaft sleeve, and a movable valve seat sealing structure is arranged between the right side portion of the valve clack and the circumferential inner wall of the right side of the valve body. According to the high-temperature-pressure-resistant double-direction rigidity seal rotary ball valve with the pretension compensation movable valve seat, the structure process is easy to achieve, the design is reasonable, the sealing effect is good, the adjustment is easy, the maintaining and changing are convenient, the rotary ball valve is of a novel structure, advantages of flap valves and advantages of ball valves are integrated, and the rotary ball valve is a pioneering and innovative novel valve.

The invention discloses a constant temperature adjusting method for an air conditioning type constant temperature hydraulic oil tank. According to the constant temperature adjusting method for the airconditioning type constant temperature hydraulic oil tank, an evaporator coil pipe of an air conditioning system is connected into a water tank; the temperature of the cooling water in the water is controlled through heating or refrigerating; the cooling water is introduced into a red copper pipe of a heat exchanger to perform heat exchange with high-temperature hydraulic oil in a heat exchanger,so that precise control of oil temperature is realized. The air conditioning system and the water tank of the air conditioning type constant temperature hydraulic oil tank are arranged at the upper part of an oil tank, and the heat exchanger is arranged on the side surface of the oil tank, so that the space position is greatly reduced. The refrigerating efficiency of the air conditioning type constant temperature hydraulic oil tank is much higher than that of the existing conventional hydraulic station; the hydraulic oil temperature is controlled between 32 and 34 DEG C, so that the power performance of the hydraulic oil is improved; the hydraulic oil is prevented from being emulsified at high temperature; the service life of the hydraulic oil is prolonged; the using amount of the hydraulic oil is reduced; the heat exchange efficiency is high; the hydraulic oil in the oil tank is ensured to be in a constant temperature state; and therefore, the constant temperature adjusting method for the air conditioning type constant temperature hydraulic oil tank has great advantages.

The invention discloses a friend-or-foe identification and laser warning device for an individual soldier, which is composed of an inquiry component installed on a weapon carried by an individual soldier and a response component equipped on the soldier. The interrogation component can transmit coded and modulated laser beams to unknown soldiers through coding and modulation circuits and infrared lasers; receive radio frequency response signals from friendly soldiers through the radio frequency receiving unit and give instructions through the indicating unit; at the same time, the infrared laser can also be used alone as a portable inquiry at night Component soldiers indicate target location. The response component identifies the laser radiation emitted by friendly or enemy troops through the laser detection unit, and responds to the friendly army’s inquiry signal through the radio frequency transmitting unit, and gives an audible and visual azimuth alarm to the enemy’s laser radiation. The main advantages of the invention are high sensitivity, good concealment, simple structure, small volume, light weight and low cost.

The invention relates to a fully-integrated nucleic acid detection microfluidic chip and a use method thereof. The fully-integrated nucleic acid detection microfluidic chip comprises a cover plate, a substrate, a bottom plate, a sample box and bubble caps, wherein the cover plate and the bottom plate are respectively stuck to two sides of the substrate; the substrate is provided with a sample outlet, a channel, a sample box groove, at least one bubble cap groove and at least one reaction tank, wherein the channel is communicated with the sample box groove, all the bubble cap grooves and all the reaction tanks, and all the reaction tanks are respectively connected with the sample outlet; the sample box is arranged on the sample box groove; the sample box groove is connected with the at least one reaction tank; the bubble caps are arranged on the bubble cap grooves; the bubble caps are internally filled with a reagent; the bubble cap grooves are respectively connected with the sample box groove and the at least one reaction tank. The invention also provides the use method of the fully-integrated nucleic acid detection microfluidic chip. The fully-integrated nucleic acid detection microfluidic chip can be used for treating a complex sample in an integrated way, and is good in airtight property and simple in structure.

The self-locking folder includes one main folding body and one subsidiary folding body hinged mutually, as well as two semi-conic bolts with semi-circular hole separately in the main folding body and the subsidiary folding body and capable of being closed to form one conic bolt with one circular hole, one guide rod capable of matching the circular hole, one conic sleeve on the guide rod capable of clamping the conic bolt under the action of an elastic mechanism, and one clutch mechanism on the main folding body for separating the conic sleeve from the conic bolt. The main folding body and the subsidiary folding body after being closed are self-locked safely and smoothly. The self-locking folder may be folded fast easily, and is suitable for use in bicycle, tricycle, motorcycle, electric bicycle, etc.

The invention relates to a rack of a self-propelled sprayer. The rack comprises a right side frame assembly, a left side frame assembly, a front wheel distance adjusting cylinder sleeve, a rear wheel distance adjusting cylinder sleeve, a right front wheel upright post, a left front wheel upright post, a right rear wheel upright post, a left rear wheel upright post, a front steering oil cylinder and a rear steering oil cylinder, wherein two ends of the right side frame assembly and the left side frame assembly are connected through the front wheel distance adjusting cylinder sleeve and the rear wheel distance adjusting cylinder sleeve; the front and rear ends of the right side frame assembly and the left side frame assembly are respectively connected with the right front wheel upright post, the left front wheel upright post, the right rear wheel upright post and the left rear wheel upright post; the front steering oil cylinder and the rear steering oil cylinder are mounted on the front and rear ends of the left side frame assembly and the right side frame assembly, and are connected with the left front wheel upright post and the right front wheel upright post as well as the left rear wheel upright post and the right rear wheel upright post which are provided with damping oil cylinders. The rack of the self-propelled sprayer has the beneficial effects that the structure is simple, the layout is compact, the manufacturing and processing are simple and convenient, the flexibility of direction conversion of the rack is improved, the damping function is excellent, and the operation is steadier.

The invention relates to a conversion valve used for a fuel gas generator employing multiple kinds of fuel, and specifically relates to a dual gas source fuel gas conversion valve apparatus. The apparatus comprises a valve body, a gas inlet and a gas outlet through which double gas sources can go in and get out, and a valve core provided with a handle. One end of the valve body is provided with a valve core hole, and the other end of the valve body is provided with the gas outlet. The gas inlet is located on the side wall of the valve body, and is vertically communicated with the gas outlet and the valve core hole. A gas passage is arranged between the gas inlet and the gas outlet. The valve core passes through the valve core hole and the gas inlet sequentially, and opens or closes a part of gas vents in the gas passage. The apparatus is designed in a manner that the fuel gas is switched through the gas inlet and the gas outlet which are equal in size, the unique valve core and the gas passage, so that shortcomings that a conventional conversion valve in the same industry at abroad is complex in structure and inconvenient to operate can be overcome. The apparatus is small in size, is light in weight, and saves the space. The gas passage has a gas output fine tuning function, the adjusting manner is high in accuracy, and the gas supply amount can be well controlled. Furthermore, the gas inlet and the gas outlet of the apparatus can be mutually replaced, so that the apparatus is more convenient to use.