66results about How to "Simple and scientific design" patented technology

The invention discloses a fabrication method for a flexible printed circuit (FPC) fine circuit. The fabrication method comprises the steps of substrate opening, laser drilling, black hole processing, full-board electroplating, slight etching combination processing of volcanic ash and a chemical medicine, dry film lamination in vacuum, laser direct imaging (LDI), dry film developing, dry film photocuring, circuit etching, automatic optical detection, and finished product package. The fabrication method for the FPC fine circuit is simple and scientific in design, copper particles are fine and uniform in surfaces after slight etching combination processing of the volcanic ash and the chemical medicine, a copper surface is good in roughness, and the binding force between a dry film and the copper surface is improved; the dry film is photocured, the binding force between the dry film and the copper surface is improved, etching of the FPC fine circuit is facilitated, and the reject ratio such as dry film dropping and circuit opening is reduced.

The invention belongs to the technical field of liquid crystal display, and specifically relates to a liquid crystal display module capable of adjusting display brightness. The liquid crystal display module comprises a backboard, a liquid crystal panel and an iron frame. The liquid crystal panel 2 internally comprises a pressure sensor, a photoresistor and a single chip microcomputer control chip. The pressure sensor and the photoresistor are connected with the single chip microcomputer control chip. The single chip microcomputer control chip is connected with a drive circuit in a main control panel. The single chip microcomputer control chip is also connected with a power supply. Through the design of adding the pressure sensor and the photoresistor, the function of automatically adjusting the display screen brightness is fulfilled. Through the design of adding fixing positions and clamping edges to a light guide plate, installation positioning is good and light guide is uniform during the liquid crystal display module assembly process. Accordingly, the liquid crystal display module capable of adjusting the display brightness has the function of automatically adjusting the display screen brightness, and has good application prospect and market value, the installation positioning is good, the light guide is uniform, and the design is scientific and simple.

The invention relates to a magnetic inductive composite puffing device suitable for electronic cigarettes and low-temperature cigarettes. The magnetic inductive composite puffing device comprises a power supply control part, an atomizing part and a puffing part which are sequentially connected, wherein the atomizing part comprises a hollow outer shell; a base is arranged at one end of the outer shell; a first magnetic induction coil is arranged in the outer shell; a solid smoke forming substance is arranged in a cavity surrounded by the first magnetic induction coil; a first heating element isarranged in a part of the solid smoke forming substance corresponding to the first magnetic induction coil; the magnetic inductive composite puffing device also comprises a tobacco juice atomizing mechanism; and the tobacco juice atomizing mechanism is arranged inside or outside the cavity surrounded by the first magnetic induction coil. The magnetic inductive composite puffing device provided bythe invention can heat the solid smoke forming substances of the low-temperature cigarettes and the tobacco juice of the electronic cigarettes to form smoke at the same time, can effectively combinethe advantages of the low-temperature cigarettes and the electronic cigarettes, overcomes a defect that the low-temperature cigarettes need to wait for more than ten seconds or even longer to form thesmoke, and can be adopted to guarantee a puff number and consistency before and after puffing to the greatest extent.

The invention relates to high-performance lead-carbon negative electrode lead paste and a preparation method thereof, and belongs to the technical field of lead-carbon batteries. The high-performancelead-carbon negative electrode lead plaster is obtained by compounding a carbon material, a conductive polymer and other assistants by using a method of dissolving sodium lignosulphonate and then separating out sodium lignosulphonate. According to the high-performance lead-carbon negative electrode lead paste, the formula design is simple and scientific, and the prepared product is good in conductivity, high in power characteristic and small in hydrogen evolution amount. The invention also provides a simple and feasible preparation method which is beneficial to industrial production.

The invention discloses an internal driving method of a three-wheel turning body of a spherical robot. The spherical robot comprises a spherical shell, a detector support, a detector, a circuit module, a supporting plate, a battery compartment and an actuating device, wherein the detector support is provided with a bull-eye wheel, and the actuating device comprises a Mecanum wheel and a drive motor. The internal driving method comprises the first step of obtaining a target parameter, the second step of controlling the orientation of the spherical robot, the third step of controlling three wheels to stop running after the orientation of the spherical robot faces a target position, the fourth step of controlling a number two wheel and a number three wheel to conduct uniform velocity and inverted running, the fifth step of controlling the three wheels to stop running after the circuit module receives a signal that the spherical robot arrives at the target position, and at this time, the spherical robot precisely arrives at the target position. According to the internal driving method of the three-wheel turning body of the spherical robot, the problems that in the prior art, the movement is not flexible and convenient, the movement efficiency is low, and the monitoring capacity is greatly limited by environmental facilities are solved.

The invention provides a cleaning device capable of being installed on a medical assembly line conveying track for use. According to the cleaning device capable of being fixedly installed on the medical assembly line conveying track for use, two supporting columns are connected to each side end of a groove box which has the same width as that of the conveying track, a fastening bolt is arranged on the upper portion of each supporting column at one side end, and a clamping block is arranged on the upper portion of each supporting column at the other side end; and a detachable wiping device is installed in the groove box, and the wiping device is a cotton-cloth wiping block which is fixedly placed in the groove box in a matched mode and internally provided with a sponge. When the cleaning device is used, the cleaning device can be integrally and tightly attached to the conveying track to be fixed through the supporting columns and the fastening bolts at the two side ends, and then continuous cleaning wiping can be conducted on the surface of the track for conveying inspection specimens.

The invention discloses an efficient novel compressed air energy storage system without complementary combustion. The efficient novel compressed air energy storage system comprises an energy storage system, an electric energy release system and a compressed heat storage and heat exchange system. The energy storage system comprises a motor, a plurality of air compressors and compressed air storage tanks, the air compressors are serially connected with one another and are connected with the motor, and the compressed air storage tanks are connected with the air compressors; the electric energy release system is provided with an adjustable pressure matcher, air expanders and a power generator, the adjustable pressure matcher is connected with the corresponding compressed air storage tank, and the corresponding air expander is connected with the adjustable pressure matcher; the compressed heat storage and heat exchange system comprises compressed heat storage heat exchange mechanisms, pressurized water storage tanks and stored heat release heat storage mechanisms, the compressed heat storage heat exchange mechanisms are positioned on the energy storage system and are connected with the pressurized water storage tanks, and the stored heat release heat exchange mechanisms are positioned on the electric energy release system and are connected with the pressurized water storage tanks. The efficient novel compressed air energy storage system without the complementary combustion has the advantages that the efficient novel compressed air energy storage system is scientific and simple in design, compact and reasonable in structure, low in cost and wide in application, power consumption of the efficient novel compressed air energy storage system can be reduced, and the efficiency of the efficient novel compressed air energy storage system can be greatly improved.

The invention discloses a novel compressed air energy storage system comprising an electric energy storage system and an electric energy release system. The electric energy storage system comprises aplurality of air compression units, a plurality of heat exchangers I, a heat storage tank and an air storage space, and the electric energy release system comprises a first expansion unit system, a second expansion unit system and a burner system; and the first expansion unit system comprises a plurality of first expansion units and a back pressure valve, and the second expansion unit system comprises a plurality of second expansion units, a plurality of heat exchangers II, an energy storage system waste heat recycling heat exchanger, a pressure reducing valve, a gas mixing device and a generator. According to the novel compressed air energy storage system, the first expansion unit system is provided with the back pressure valve so that the first expansion unit system has the ability of sliding pressure operation; an external burner is provided for proper afterburning through the second expansion units by using pressurized exhaust as supply air, and the performance ability of compressed air flow is improved; the gas mixing device is provided, so that reutilization of waste pressure and waste heat of burner flue gas is achieved; and the system efficiency is improved greatly.

The invention discloses a high-efficiency afterburning type compressed air energy storage system. The high-efficiency afterburning type compressed air energy storage system comprises an electric energy storage system and an electric energy release system, wherein the electric energy storage system comprises a plurality of air compression units, a first heat exchanger, an air storage space and an energy storage system heat storage tank, and the electric energy release system comprises a plurality of combustors, a combustor air supply system, a plurality of second heat exchangers, a plurality ofexpansion machine units, an energy storage system waste-heat recycling heat exchanger, a gas mixing device and a generator. According to the high-efficiency afterburning type compressed air energy storage system, the compressed air required by the combustor is the pressured exhaust gas of an expansion machine unit, the pressured exhaust gas of the expansion machine unit is subjected to partial work for recycling part of energy, and the fuel consumption is reduced. The gas mixing device mixes pressured flue gas with the pressured exhaust gas of the expansion machine unit, the mixed gas entersthe expansion machine unit to work for recycling flue gas heat and pressure energy, waste heat is reused by the energy storage system, and the heat of bearing lubricating oil of devices such as the air compression units, the expansion machine unit and the engine are recycled, so that the efficiency of the energy storage system is greatly improved.

The invention aims to provide a method for preparation of organic calcium nutrient soil by municipal sludge, and can solve the technical problems that waste is subjected to resource recovery and is transformed to improve soil. The method includes the following steps: (1) after the municipal sludge is collected, adding a hydrolysis reagent, and carrying out thermal hydrolysis treatment, wherein thehydrolysis reagent is quick lime, and the addition ratio of the quick lime is 18%-22.5% of the sludge dry weight; (2) carrying out press filtration of the municipal sludge after thermal hydrolysis treatment by a plate and frame filter press, and then carrying out drying treatment, to obtain dried sludge; (3) analyzing nutritional components and properties of the dried sludge; (4) crushing and sieving the dried sludge by crushing and sieving processes; and (5) adding corresponding nutrient components to the dried sludge after crushing and sieving according to the use demand, and mixing and stirring to prepare the finished product of organic calcium nutrient soil.

The invention relates to a detection tool and a method for measuring a distance dimension of a center plane of an arc structure, which comprises a detection platform, a square box, a location shaft, aheight vernier caliper, a power supply battery. The height vernier caliper is provided with a first detection head and a second detection head which are arranged top-down parallel, and a detection component composed of the first indicator lamp and the second indicator lamp respectively corresponding to the first detection head and the second detection head; the positive pole of the power supply battery is connected with the height vernier caliper through a positive lead wire, the negative electrode is connected with the first indicator lamp and the second indicator lamp through a wire, and the first indicator lamp and the second indicator lamp are respectively connected with the first detection head and the second detection head through a wire. The detection tool has the advantages of simple and scientific design, convenient operation, high efficiency and accuracy in measuring the position of the center plane of the circular arc structure, high measurement accuracy, and can be widelyapplied to the detection requirements of various measurement and circular arc structure center plane distance dimensions.

The invention provides a fertilizing device capable of being fixed at the rear side of a carriage. The fertilizing device comprises an open box body which consists of a rear blocking plate, side blocking plates and a bottom plate through assembling, wherein a plurality of fertilizing holes are distributed in the bottom plate, a shaft lever is transversely arranged below the bottom plate, fertilizing grooves which can be adjusted leftwards and rightwards are distributed in the shaft lever, a transmission gear with a clutch is mounted at one end of the shaft lever, an adjusting knob which is used for adjusting the fertilizing grooves is mounted at the other end of the shaft lever, a clutch is mounted between the transmission gear and the fertilizing grooves, and a plurality of threaded holes which can be connected and fixed with the carriage are formed in the inner sides of the left and right blocking plates and the inner side of the bottom plate. When the fertilizing device is in use, a rear-side baffle of the carriage of a motor vehicle is detached, the open inner side of the device is connected and fixed with the rear side of the carriage, the transmission gear is in transmission connection with the motor vehicle through a transmission belt, then, a bulk fertilizer can be loaded into the carriage, and the fertilizer is applied to fields through the fertilizing grooves in a manner that the shaft lever is driven by the motor vehicle.

The invention provides a design optimization method for a buffer structure at an entrance of a beveled tunnel. After the beveled buffer structure is arranged, the wavefront thickness of initial compression waves is remarkably increased, so that the rise time of the compression waves is prolonged, the pressure gradient of the initial compression waves is reduced, micro-pneumatic waves at an exit of the tunnel are relieved, and the aerodynamic effect inside and outside the tunnel can be effectively relieved. The design optimization method for the buffer structure at the entrance of the beveled tunnel specifically comprises the following steps of 1, calculating a model; 2, solving the aerodynamic effect of the tunnel based on aeroacoustics; and 3, optimizing the buffer structure. The design optimization method can be popularized and applied to the field of high-speed railway construction; the entrance of the tunnel is transformed and optimized; the structural design is scientific and reasonable; and the design optimization is accurate and easy to operate.

The invention provides a large-diameter circular steel tube butt joint adjusting device, and belongs to the field of welding equipment. The large-diameter circular steel tube butt joint adjusting device is composed of a moving trolley, a trolley moving platform and an adjusting mechanism. The adjusting mechanism is composed of hydraulic oil cylinder fixing supports, hydraulic oil cylinders and adjusting cushion blocks. The hydraulic oil cylinder fixing supports are composed of a left set of cross-shaped box beams and a right set of cross-shaped box beams, wherein the left set of cross-shaped box beams and the right set of cross-shaped box beams are symmetrical. The left set of hydraulic oil cylinders and the right set of hydraulic oil cylinders respectively comprise four hydraulic oil cylinders which are connected with face plates at the top ends of the left set of cross-shaped box beams and face plates at the top ends of the right set of cross-shaped box beams through flange plates respectively, and ball heads of the hydraulic oil cylinders are connected with the adjusting cushion blocks respectively. The adjusting mechanism is arranged between two butt joint large-diameter circular steel tubes, two segments of the large-diameter steel tubes with the same diameter are synchronously adjusted through the four hydraulic oil cylinders which are symmetrical left and right, then, the apertures of the butt joint ends of the two segments of the large-diameter steel tubes completely coincide, the steel tubes are welded in a butt joint mode, and therefore butt joint accuracy and efficiency of the large-diameter steel tubes are remarkably improved. The large-diameter circular steel tube butt joint adjusting device is scientific and simple in design and convenient to operate, and meets the requirements for adjustment and butt joint of the large-diameter steel tubes of various specifications.

The invention discloses a preparation device and method for high-quality titanium dioxide ceramic paint, which comprises a reaction chamber, a cooling chamber located below the reaction chamber, an impurity removal device connected with the cooling chamber, and a collection box connected with the impurity removal device; the reaction chamber They are respectively connected with the vacuum pump and the cooling water pump. There are several target heads on the reaction chamber, and the impurities are removed by the plasma method to directly generate high-quality rutile titanium dioxide. The preparation device and method of the high-quality titanium dioxide ceramic paint provided by the present invention are scientific and simple in design, directly generate high-quality rutile-type titanium dioxide through the plasma method, and do not need grinding, directly remove impurities, and have high quality.

The invention discloses an automatic air isolation device for a feeding port of an electric heating smelting furnace. The automatic air isolation device comprises the feeding port. A charcoal feeding machine is arranged at the upper left position of the feeding port. A certain amount of charcoal is stored in the charcoal feeding machine. The charcoal is cut into segments with the unequal lengths smaller than the diameter of the feeding port. The charcoal feeding machine is started, the charcoal is placed in the feeding port, the feeding port is evenly filled with the charcoal, and the charcoal becomes a charcoal layer tightly covering melting molten copper. The automatic air isolation device is simple and scientific in design and low in cost; the heating process becomes more convenient and faster, the labor intensity of workers is further relieved, and it can be guaranteed that air and the molten copper in the electric heating smelting furnace are automatically isolated at any time; and meanwhile due to the fact that the charcoal serving as a reducing agent in the oxidization process can further reduce the oxygen content in the molten copper, the product quality of a copper material can be remarkably improved.

The invention relates to the field of relay protection action contact testing, in particular to a relay protection action contact testing system which is composed of a collector input module, a collector output module, a wireless module and a man-machine interaction module. After the collector input module can input a contact action power level signal, through a designed photoelectric isolation loop and an AD conversion circuit, analog-to-digital conversion of active or passive signals of the collector is realized, and the correctness of the loop is verified through a Matlab analogue simulation experiment. According to the invention, the relay protection action contact testing system is simple and scientific in overall design, convenient to operate and use, high in expandability and wide in application range, and compared with an existing relay protection action contact testing system, the relay protection action contact testing system can shorten contact action testing time by 50% orabove during specific work, saves power failure time and can generate huge economic benefits through multiple power supplies.

The invention discloses a multi-fuel combustor, which comprises a biomass gas mechanism, a natural gas mechanism, a light fuel mechanism, and a fuel combustion device connected with the biomass gas mechanism, the natural gas mechanism and the light fuel mechanism. The fuel combustion device comprises a fan set and a combustion mechanism connected with the fan set; a combustor, a combustion furnace head connected with the combustor, and a fire watching pipe located at the outer side of the combustor are arranged on the combustion mechanism; the light fuel mechanism penetrates through the fire watching pipe so as to enter the combustor; the combustion furnace head is provided with a plurality of air rotary vanes and connecting pipes, an air cone and a fuel gas branch pipe; the plurality of air rotary vanes are located in the combustion furnace head; the air cone is matched or connected with the connecting pipes; the fuel gas branch pipe is connected with a fuel gas hole in the air cone. The multi-fuel combustor provided by the invention is simple and scientific in design, and can adopt multiple fuels, so that a user can select the favorable fuel to switch for combustion, the production cost is reduced, the profit margin is improved, and the multi-fuel combustor is wide in application range so as to be worth to be popularized.

The invention provides a steel plate stamping automobile axle housing circle cutting machining positioning device. Axle housing end supporting seats are arranged in the middles of the two ends of theupper side of a rectangular low-reinforced base correspondingly. V-shaped clamping grooves are formed in the upper sides of the two supporting seats correspondingly, and positioning protruded heads are arranged in the middles of the interiors of the two V-shaped clamping grooves separately. Bracket supports are arranged on the two sides of the base and further located between the two supporting seats respectively, and brackets extending towards the middle are arranged above the bracket supports on the two sides respectively. During use, a steel plate stamped automobile axle housing is horizontally placed above the base, the two ends of the axle housing are placed in the V-shaped clamping grooves at two ends, and the middle of the axle housing is placed on the bracket. Due to the fact thatpositioning pits are both formed in the two ends of the axle housing during stamping, and the pits at the two ends of the axle housing are directly placed on the positioning protruded heads, positioning can be achieved, and middle circle cutting can be performed; and meanwhile, after one surface is subjected to circle cutting machining, the whole body can be rotated and turned up, and the other surface can be subjected to circle cutting machining.

The invention discloses a special CNC (computer numerical control) machine tool for tappet drilling. The machine tool comprises a tool body and a control box, and is characterized in that a base is fixedly connected with the upper end of the tool body, a workpiece groove is formed in the middle of the base, a plurality of transverse supporting columns for supporting a workpiece are arranged at thelower end of the workpiece groove, and both sides and the middle of each supporting column are hollowed out; a stop block is fixed at one end of the workpiece groove, and a workpiece clamping block is arranged at the other end of the workpiece groove and is fixed at a telescopic end of a clamping oil cylinder; fixing blocks are arranged on two sides of the workpiece groove, and drilling holes inclined to the workpiece are formed in the fixing blocks; drilling devices are arranged two ends of each drilling hole respectively, and each drilling device comprises a two-way oil cylinder fixed at the upper end of the base; a drilling knife matched with the corresponding drilling hole is fixedly connected with one end of a piston rod of each two-way oil cylinder, and a motor for driving the piston rod to rotate is arranged at the other end of the corresponding two-way oil cylinder. The machine tool has the beneficial effects that two-way simultaneous drilling of the workpiece is realized, accurate positioning of the workpiece is ensured, and machining precision of the workpiece is ensured.

The invention provides a portable propaganda display board. Aluminum alloy frames are arranged all around board bodies of the display board for popular science propaganda, formed display boards are connected together at ends of the two board bodies through hinges, and a chain which can support and expand the two board bodies into a herringbone structure is arranged between the two board bodies at the other ends of the board bodies which are relative to the hinges. Popular science propaganda words and pictures are pasted on the two board bodies, and the portable propaganda display board can be stably placed as the display board for propaganda after expanded into the herringbone structure while being used, the two board bodies are folded and overlapped to be conveniently carried and stacked when the portable propaganda display board is put away.

The invention discloses an interline elastic force component fishing rod for enhancing a fishing hand feeling. The interline elastic force component fishing rod comprises a telescopic rod, a fishing line rope, a rod end blanking cap, a double-end connecting piece, a compression spring, a coiling wheel, a fishing line rope fixing piece, a handle casing pipe and a handle blanking cap. The interline elastic force component fishing rod is characterized in that the telescopic rod is in threaded connection with the handle casing pipe through the double-end connecting piece, the compression spring and the coiling wheel are arranged in the handle casing pipe, the tail end of the handle casing pipe is connected with the handle blanking cap through an internal thread, one end of the fishing line rope is fixed by the fishing line rope fixing piece, the other end of the fishing line rope penetrates through the coiling wheel, the compression spring and the double-end connecting piece and is pulled out of an inner cavity of the telescopic rod, and the rod end blanking cap is arranged at the rod tip of the telescopic rod. The interline elastic force component fishing rod is simple in structure, convenient to operate and tidy and attractive in appearance, can enhance the fishing hand feeling and is not prone to being broken or pulled away.

The invention discloses a multifunctional outdoor solar energy ultraviolet ray disinfection box. The multifunctional outdoor solar energy ultraviolet ray disinfection box is composed of a tank body, ahandle, a lock lower groove, an ultraviolet lamp tube, a box cover, a lock upper insert, an angle adjusting supporting strip, adjusting holes, a solar cell panel assembly, a conversion control circuit module, a lithium battery, a cell panel backboard box, a fixing turn button, ad a support sheet; the solar cell panel assembly is adopted, so that electricity energy obtained through conversion of solar energy is input into the lithium battery for storage using the conversion control circuit module; electricity energy stored in the lithium battery is used for supplying the ultraviolet lamp tubewith electricity using the conversion control circuit module; the multifunctional outdoor solar energy ultraviolet ray disinfection box is used for ultraviolet ray disinfection of outdoor tableware ormedical articles; the elevation angle of the solar cell panel can be adjusted based on the position of the sun; simple and effective disinfection of a plurality of outdoor articles can be realized. Design is simple and scientific, the multifunctional outdoor solar energy ultraviolet ray disinfection box is portable, is convenient to use, is low in cost, is capable of saving energy, is friendly tothe environment, is excellent in disinfection effect, and is wide in application range.

The invention provides a quenching fixing device for automobile stabilizer bars. Symmetrical oil cylinder driven bent part clamps for fixing the automobile stabilizer bars are arranged on the two sides of one side of a lifting bottom plate correspondingly, wherein the lifting bottom plate can be mounted and fixed into a quenching equipment pool for using; and symmetrical oil cylinder driven end clamps for fixing the ends of the automobile stabilizer bars are arranged on the two sides of the other side of the lifting bottom plate correspondingly. Through arrangement in this way, the bent automobile stabilizer bars can be rapidly and stably clamped and fixed, the bent stabilizer bars are not prone to deformation during quenching treatment, and the production efficiency is improved advantageously.

The invention discloses a multifunctional fan system which comprises a main body, air outlets connected with the main body through air pipes, an external wireless temperature and humidity sensor and an air exhaust outlet. The main body comprises an air port cover cylinder, a fan body and a fan body base, and the air port cover cylinder is connected with the fan body through a flange plate. Fan body filtering mechanisms are arranged on the two sides of the fan body. A centrifugal fan, a PTC heater and a circuit control system are arranged in the fan body. The circuit control system is located under a fan body head cover and connected with the external wireless temperature and humidity sensor. The PTC heater is located below a fan body back shell. The circuit control system is in circuit connection with the devices in the multifunctional fan system and connected with an external computer / mobile phone through the Internet of Things. The multifunctional fan system is simple and scientific in design and has the Internet of Things functions that the fan equipment of automatic feedback of information of internal and external circulating filtration and air heating, automatic control over the air volume and automatic control over the temperature and humidity is arranged, meanwhile, mobile-phone-controlled fan equipment is integrated, and monitoring of temperature and humidity data and automatic feedback of malfunctions to the mobile phone are achieved.

The present invention relates to the technical field of water dispenser equipment, in particular to an intelligent shared water dispenser, comprising: a body shell, a body liner, a limit assembly, a rotating assembly and a controller, wherein the body liner is arranged on the body shell Inside; the limit assembly is close to the lower end of the inner tank of the body, the limit assembly includes a first limit piece, a second limit piece and a water retaining panel; the rotation assembly includes a frame, a rotating shaft and a stop switch ; The controller is connected to an external network server; The controller is provided with a power supply port, a motor port and a stop switch port. The intelligent shared drinking water dispenser of the present invention has a simple overall design and low cost, can timely feed back the results of water intake and the stock status of bottled water, can greatly improve the convenience of life, and has a good market application prospect.

The invention provides a bed-staying rehabilitation treatment positioning sleeve for a patient. According to the positioning sleeve used for fixing during bed-staying rehabilitation treatment on the patient, transverse restraint straps for corresponding tying are arranged on a sleeve body, and correspondingly-arranged vertical restraint straps are arranged on a port of the sleeve body. When the positioning sleeve is in use, the corresponding limb of the patient needing rehabilitation treatment is sleeved with the sleeve body, and therefore the limb can be fixed to the periphery of a sickbed through the transverse restraint straps and the vertical restraint straps.

The invention provides a deck chair equipped with a sunshade. The top of the backrest of a deck chair body is movably connected with the foldable sunshade via a hinge axle. When the deck chair is to be used outdoors, the sunshade can be directly unfolded to shelter people from irradiation by sunlight.

The invention provides a liquid oxygen and fuel oil mixing device. The tail of a Laval pipe provided with a compressed air inlet pipe is connected with an energy storage pot after being connected with a pressurization chamber through conveying pipes, the conveying pipes connected to the two ends of the pressurization chamber are provided with check one-way valves, one side of the Laval pipe is provided with a liquid fuel suction pipe and a liquid oxygen suction pipe, an electronic sparking plug is arranged on the top of the pressurization chamber, and a gas pressure meter connector on the top of the energy storage pot is provided with a pressure sensor which is connected with the electronic sparking plug through a wire. According to the device of the combined structure, liquid oxygen and fuel oil can be sufficiently mixed for creating conditions for explosion of the pressurization chamber, fuel can be sufficiently utilized, and the combustion value can be brought to fuller play.