108results about How to "Achieve supercharging" patented technology

The invention provides a liquid engine propellant flow field calibration system and method. The calibration result can be more precise and rapid, and high-precision measurement of the flow in an engine test is achieved. The conventional large liquid engine propellant flow field calibration system comprises a mass flow meter which is connected to a main pipeline in series and located between a propellant main vessel and a turbo flow meter, a pressure adjustment system and a propellant recycling pipeline are configured, and it is guaranteed that when the position and state of the turbo flow meter are consistent with those of test run, on the basis of the mass flow, a real propellant is adopted for conducting field calibration on the turbo flow meter; a propellant recycling pipeline is connected with the main pipeline in series and finally connected to a propellant recycling vessel, and the propellant recycling vessel is used for storing the propellant flowing in the exhaust process and the calibration process.

The invention discloses a hollow fan blade-based aero-engine cooling and cooling air integrated design method, and relates to the technical field of aero-engine design. The design method comprises thesteps of introducing air to an air inlet cone from an air introduction position given by an air compressor, and heating the air inlet cone by utilizing the introduced air to prevent ice; performing centrifugal pressurization and cooling by a channel in a fan, collecting the pressurized air from a fan case, passing a cooling channel of an external case and an external case support plate in sequence to reach a core engine, and continuing to backwards lead the air to the outer side of a turbine combustion chamber; and enabling the air to flow in a turbine stator, and cooling a guide blade and stator and rotor parts. According to the method, the design idea that the air passes a turbine after passing the fan is adopted; ice prevention and turbine blade cooling of an air inlet system can be considered at the same time; excessive parts do not need to be added, so that the mass of the whole engine is reduced; and the cooling air quality and the overall engine efficiency are improved.

The invention provides a raw oil lifting system and a method for conveying a fluid by utilizing a sliding vane pump. The raw oil lifting system comprises an oil pipe and an oil pump connected with the oil pipe, wherein the oil pump is the sliding vane pump; the sliding vane pump is provided with a barrel-shaped stator; a drive shaft arranged in the stator along a direction parallel to the length of the stator, and a rotor sleeved onto the drive shaft are arranged in the stator; the lower end of the stator is provided with a suction disk; the upper end of the stator is provided with an exhaustion disk; the suction disk, the exhaustion disk and the stator form a barrel-shaped inner cavity; the rotor is arranged between the suction disk and the exhaustion disk; the suction disk is provided with a suction hole for sucking raw oil; and the exhaustion disk is provided with an exhaustion hole for exhausting the raw oil. The method for conveying the fluid by utilizing the sliding vane pump comprises the steps of sucking and exhausting the fluid from the direction of the end part of the stator to perform a lifting process.

The invention discloses a mining hydraulic support self-support pressurized system, comprising an upright post and a base lifting jack, wherein a piston cavity of the upright post is connected with a piston rod cavity of the base lifting jack by a pressure piping which is provided with a hydraulic control one-way valve of which the normal open direction directs the piston cavity of the upright post. A pipe line of a piston cavity of the base lifting jack is provided with a pressure reducing valve, or is divided into two branch lines of which one branch line is provided with the pressure reducing valve and the other is not, the opening and the closing of the two branch lines are controlled by a two-position four-way valve. By using the originally equipped hydraulic unit of the mining hydraulic support-the base lifting jack to generate high pressure energy sources and in the self-support mode, the piston cavity of the upright post of the hydraulic support can achieve the high pressure liquid of which the pressure is higher than that of the original solution feed pumping station, thereby reaching the intension of adding pressure. The invention has the advantages of simple structure and low cost, and resolves the problem that the setting load of the hydraulic support on the comprehensive mechanization coal face in the coal mine is too low and improves the ratio of the setting load of the hydraulic support to the rated supporting force to 90 to 98 percent.

The invention belongs to the field of artware and in particular discloses wood product processing equipment. The wood product processing equipment comprises a rack, wherein a driving wheel and a driven wheel are rotatably connected to the rack; a conveyor belt is tensioned on the driving wheel and the driven wheel, and the driving wheel is connected to a transfer driving mechanism for driving thedriving wheel to rotate intermittently; a rotary shaft and a driving ring are rotatably connected to the rack above the conveyor belt, the driving ring is arranged out of the rotary shaft in a sleeving manner, a sleeve is arranged on the rotary shaft in a sleeving manner, a one-way bearing is connected between the sleeve and the rotary shaft, and a paint-spraying mechanism is fixed to the outer edge of the sleeve. The wood product processing equipment provided by the invention can solve the problem that in the prior art, the paint-spraying thickness of the side face of a workpiece is non-uniform in a cylindrical workpiece side face paint-spraying step.

The invention relates to a metal hydride hydrogen compression device with a heat source and a manufacture method thereof. The manufacture method is characterized in that the metal hydride hydrogen compression device is heated by self under the condition of no additional heat sources, and then the metal hydride hydrogen compression device adsorbs hydrogen at the room temperature and discharges high-voltage hydrogen at high temperature. The device comprises a hydrogen compression part with metal hydride and a heat source part, wherein a phase change energy storage material in the heat source part is subjected to temperature raising and phase change and stores heat under the heating condition, and heat is provided for the metal hydride in the hydrogen compression part; then, the metal hydride releases hydrogen at a certain temperature range of 50-300DEG C in more than two hours; and the hydrogen release pressure is between 10MPa and 100MPa.

The invention discloses an active collision-avoidance system based on novel solenoid valve controlling hydraulic braking and a braking method. The active collision-avoidance system comprises a braking pedal sensor, a braking pedal sensing simulator, a wheel speed sensor, an asymmetric hydraulic braking wheel cylinder, a solenoid operated four-way valve, an overflow valve, an oil tank, a hydraulic pump, an energy accumulator, an electronic control unit, a laser radar detection module and a buzzer. A braking master cylinder of a traditional hydraulic braking system is removed, the solenoid operated four-way valve is adopted to replace a complex braking valve, and a traditional braking wheel cylinder is changed into the asymmetric hydraulic braking wheel cylinder. Braking modes can be switched more rapidly by matching the asymmetric hydraulic braking wheel cylinder with the solenoid operated four-way valve, and pressurization, pressure maintaining and pressure reduction of the system can be achieved. The braking pedal sensor is adopted to discover a wrong braking behavior of a driver in time, a vehicle in the front is monitored through a radar system in real time, the distance, direction and relative speed between a vehicle and the vehicle in the front are judged, an alarm can be given if necessary, vehicle active collision avoidance can be achieved through control of an ECU, and it is guaranteed that the vehicle is driven safely.

The invention discloses a plunger type equal-oil-inlet-outlet-flow four-way hydraulic transformer, which adopts an inclined axis type axial plunger motor as a base body, and comprises a shell, a flow distribution plate, an end cover, a cylinder body, a plunger, an inclined plate and the like. Four kidney slots are formed in the flow distribution plate; N plunger holes are uniformly formed in the cylinder body; the left side of the flow distribution plate and the right side of the end cover fit through an oil film; the right side of the flow distribution plate and the left side of the cylinder body through an oil film; four oil ports are formed in the end cover and communicate with the four kidney slots in the flow distribution plate through four kidney slots in the end cover; the right end of the plunger is hinged with the inclined plate through a spherical end head; the flow distribution plate, the cylinder body and the inclined plate can rotate along respective central axes; an included angle exists between the central axis of the flow distribution plate and the central axis of the inclined plate; and an included angle exists between the central axis of the cylinder body and the inclined plate. The plunger type equal-oil-inlet-outlet-flow four-way hydraulic transformer provided by the invention not only can enable hydraulic energy in a hydraulic system recovery system to enter serially without changing the flow of an oil circuit, but also can release stored liquid energy so as to be recycled, has an oil-liquid pressure transformation function, and is provided with four liquid inlet and outlet holes, wherein the plunger is a main energy conversion element.

The invention discloses an oil supplying control system for a small unmanned aerial vehicle. The unmanned aerial vehicle comprises a turbojet engine and an oil tank, wherein the turbojet engine supplies power to the unmanned aerial vehicle, and the oil tank supplies oil to the turbojet engine. The oil supplying control system is characterized by comprising a gas guiding pipe, and the gas guiding pipe guides part of gas generated by the turbojet engine into the oil tank. It is guaranteed that the pressure of the oil supplying system can be effectively increased in various working conditions, the service life of a fuel pump is prolonged, and safe and reliable operation of the unmanned aerial vehicle is guaranteed.

The invention relates to an opposed mechanical supercharging four-stroke internal combustion engine in the technical field of the internal combustion engine. The opposed mechanical supercharging four-stroke internal combustion engine comprises air cylinders, pistons, connecting rods, air inlet mechanisms, air inlet valves, air bleeding mechanisms, air bleeding valves, a connecting pipe and a crankshaft; the air inlet mechanisms and the air bleeding mechanisms are arranged at the top ends of the air cylinders; the air inlet valves are arranged in the air inlet mechanisms; the air bleeding valves are arranged in the air bleeding mechanisms; the two ends of the connecting pipe are respectively connected with the first air inlet mechanism and the second air bleeding mechanism; and the two ends of the connecting rods are respectively connected with the crankshaft and the pistons. In the working process, the second piston can use the mechanical energy of the first piston through a crankshaft connecting rod mechanism; by controlling the timing of the air inlet valves and the air bleeding valves, the second piston can be used for supercharging air sucked by the second air cylinder, thereby enabling the first air cylinder to suck more air and improving the effective power of an engine. The opposed mechanical supercharging four-stroke internal combustion engine is reasonable in design and simple in structure and is suitable for a mechanical supercharging system of a four-stroke engine.

The invention discloses a gas supercharging device for carbon dioxide flooding. The device comprises a tank body, a drainage pipe, a gas outlet pipe, an adjusting valve, a booster pump, a gas inlet pipe, a first barrel body, a motor, a spiral shaft, a flow guide pipe, a second barrel body, a top plate, a hydraulic cylinder, supporting legs, a pressing plate, a connecting rod, a limiting rod, a piston, a sealing ring, a supporting plate, a bearing seat, a rotating shaft, a roller, a washer, a fixed pipe, a connecting pipe, a sleeve, a conveying pipe, a gasket, a convex plate, a bolt, a box body, a box cover, a water outlet pipe, a water inlet pipe, a water pump, a circulating pipe, a separator plate and a diversion port. The device has the beneficial effects that the tank body is adopted for storing carbon dioxide, carbon dioxide gas can be compressed while carbon dioxide is conveyed, the pressurization effect of carbon dioxide is improved, the effect of mixing the carbon dioxide with crude oil is improved by adopting multi-stage gas compression, heat dissipation of the surface of the barrel body can be implemented, temperature adjustment is achieved, and adjustment on pressure and temperature in the carbon dioxide gas conveying process is facilitated.

The invention relates to the technical field of tire pressure detection, and discloses tire pressure information acquisition equipment and an operation system thereof, the tire pressure is monitored by adopting a mode of combining a direct method and an indirect method, so that the measurement failure of a tire pressure monitor caused by factors such as high temperature can be avoided, and the measurement failure caused by factors such as high temperature can also be prevented; and furthermore in an indirect measurement method, the condition that the tire pressure of a plurality of tires is abnormal at the same time and cannot be known by a wheel speed sensor is avoided, the monitoring precision is improved, the safety of vehicle driving is improved, a temperature sensor and the like are arranged, a piston is matched with an air inlet pipe for continuous air inlet, the air pressure in the tires is reduced in a self-adaptive mode, and the tire burst phenomenon caused by too high tire pressure is avoided; through arranging an exhaust electromagnetic valve and the like, the highly-compressed gas in the gas storage pipe barrel is gradually exhausted into the tire through the exhaust pipe, so that the tire pressure of the tire in the corresponding low-temperature environment is increased in a self-adaptive manner, the phenomena of driving comfort weakening and the like caused by insufficient tire pressure in the low-temperature environment are avoided, and the safety of a vehicle in the driving process is further improved.

The invention discloses a gas compressor with damping boss guide vanes. The gas compressor is composed of a machine body assembly, a supercharging device and a servo motor. The supercharging device isinstalled between a gas inlet and a main gas chamber of the main body assembly, gas supercharging is achieved, the supercharging process is stable, energy consumption is low, and high supercharging is achieved according to practical requirements. The servo motor is installed on the outer wall side of a shell. The guide vanes adopted in the gas compressor are simple in structure, damping bosses inthe middles of the guide vanes and the vanes are assembled to be in an annular shape to restrict each other, rigidity is increased, the inherent frequency of the vanes is changed, the bending torsional stress of the roots of the vanes is reduced, damping boss combined faces of the guide vanes are sprayed with wear resisting alloy, and the damping effect can be achieved during vibration of the guide vanes. Impellers adopted in the gas compressor are large in gas suction amount, low in noise, high in working efficiency, no prone to deformation and damage and long in service life, flow equalizing processing for gas suction and gas exhaust can be achieved, and balance of gas pressure in the shell is ensured.

The invention discloses a buckle screwing and unscrewing device for an iron roughneck. The buckle screwing and unscrewing device comprises clamping pliers, buckle punching pliers, and a buckle punching oil cylinder, wherein one end of the buckle punching oil cylinder is fixed on the clamping pliers, and the other end of the buckle punching oil cylinder is hinged to the buckle punching pliers; a supercharging device is connected to the buckle punching oil cylinder, and under at least one predetermined state, a rod cavity of the buckle punching oil cylinder is used for oil intake, and a rodless cavity is used for oil returning; the supercharging device provides pressure Pa which is larger than the system pressure P for the rod cavity of the buckle punching oil cylinder. According to the buckle screwing and unscrewing device disclosed by the invention, the supercharging device is additionally arranged, so that the working pressure of the buckle punching oil cylinder is increased; in addition, under the condition that the system of a whole pumping station is maintained unchanged, and the external dimension, the structure and the mounting dimension of the buckle punching oil cylinder are maintained unchanged, no matter whether a drilling tool is screwed forwards or backwards, the buckle screwing torque and the buckle unscrewing torque which conform to design requirements can be achieved. The invention further discloses the iron roughneck and petroleum drilling equipment.

The invention discloses a perforating machine for a manifold. The perforating machine comprises a base, wherein a first support bar and a second support bar which are mutually symmetrical are fixedly connected with the top of the base; one side surface of the first support bar is fixedly connected with a support plate; a motor is arranged at the top of the support plate; the output end of the motor is fixedly connected with an eccentric wheel; a rotary disc is arranged on one side surface of the second support bar; a bearing is arranged between the first support bar and the second support bar; the interior of the bearing is fixedly connected with a connecting bar; one end of the connecting bar extends to one side surface of the bearing and is fixedly connected with the rotary disc; and the other end of the connecting bar extends to the other side surface of the bearing, penetrates the first support bar and is fixedly connected with the eccentric wheel. The perforating machine for the manifold can achieve perforating without manually clamping the manifold by hand and can automatically clamp the manifold, thereby reducing the labor force, improving the working efficiency, lowering the operation risks and avoiding accidental injuries.

The invention discloses a full-hydrodynamic automatically-controlled supercharged fertilizer apparatus which comprises a supporting assembly, a power assembly and a fertilization assembly, wherein the supporting assembly contains a first support plate, a second support plate and a third support plate which are parallel to each other and are arranged in a proper order; the power assembly contains large telescopic bellows and an elastomer; inflow and outflow of the large bellows are controlled to change pressure; by pressure difference between the large bellows and the elastomer, reciprocating motion of the second support plate is realized; the fertilization assembly contains small telescopic bellows; and the small bellows are alternately stretched or compressed with continuous reciprocating motion of the second support plate, and pressure in the cavity is reduced or increased with the stretching or compression such that a fertilizer is inhaled from a fertilizer inlet one-way valve and is pressed out of a fertilizer outlet one-way valve. The apparatus has advantages as follows: a system is simple; components are easily available; costs are low; and reliability is high. Only driven by hydraulic pressure, the apparatus can adapt to a low-pressure work environment and is suitable for our national situation of low-pressure-pipeline irrigation.

The invention provides a tool for reducing the equivalent circulating density. The tool comprises an outer cylinder, a one-way check valve assembly, an inner shell and a piston rod, wherein the outercylinder is put in a borehole, and a first annulus is formed between the outer cylinder and the borehole; the outer cylinder is sleeved with a sealing mechanism sealed on the inner wall of the borehole, and the first annulus is separated into an upper annulus and a lower annulus; the sidewall close to the upper end of the outer cylinder is provided with jet holes communicating with the upper annulus, and the sidewall close to the lower end of the outer cylinder is provided with inflow holes communicating with the lower annulus; the one-way check valve assembly is arranged in the outer cylinder, the inner shell is connected with the lower end of the one-way check valve assembly , and a second annulus is formed between the inner shell and the outer cylinder; the sidewall of the inner shell is provided with pressure relief holes, and the bottom wall of the inner shell is provided with a through hole; the piston rod is arranged in the inner shell, the lower end of the piston rod is arranged in the through hole in a penetrating manner, and a piston is arranged at the upper end of the piston rod; and a first flow channel is arranged in the piston, and a second flow channel communicatingwith the first flow channel in a butt joint manner is arranged in the piston rod. The tool for reducing the equivalent circulating density can reduce the equivalent circulating density, realizes the purpose of depressurization and guarantees safe and efficient well drilling.

The invention provides a liquid oxygen methane rocket and a drop pressure type pressurization design method for a liquid oxygen methane rocket storage tank. The drop pressure type pressurization design method comprises the steps that at the first period of work of a main engine, the storage tank is pressurized in a self-generation pressurization mode; and after the main engine stops working, in atleast part of time in the second period of traveling engines, the storage tank is pressurized by at least one of evaporation of a cryogenic propellant and gas expansion in the storage tank. In the drop pressure type pressurization design method for the liquid oxygen methane rocket storage tank, the difference of pressurization pressures needed by inlets of the main engine and the traveling engines is fully utilized, self-generation pressurization systems of the traveling engines are canceled, rocket structure design is simplified, and rocket carrying capacity is promoted.

The invention relates to the technical field of fluid pressure actuators, mainly relates to an accumulator inflation device, in particular to a hydraulic accumulator inflation device based on oilfield petrochemical engineering and an inflation method thereof, and aims to solve the problems that nitrogen is inflated into an accumulator mainly depending on the pressure in a nitrogen tank at present, and when the final pressure of gas in the accumulator is required to be higher, the accumulator cannot be inflated in the mode, and the application range is narrow; and an existing inflation device cannot select the optimal inflation mode and automatically conduct inflation according to actual conditions. The inflation device comprises a nitrogen tank, wherein a gas pipe is connected with the nitrogen tank, a gas-filled tube is connected with an accumulator, and a pressurization box is arranged between the nitrogen tank and the accumulator. According to the device and the method, the optimal inflation mode can be obtained according to the actual conditions, inflation can be automatically conducted, the output nitrogen can be pressurized, inflation can be smoothly conducted when the requirement for the pressure of gas in the accumulator is high, and the application range is wide.

The application relates to a ventricular assist device. The ventricular assist device comprises a pressurization inner cavity, an impeller, a positioning magnetic ring group and a servo motor; the pressurization inner cavity includes a first side wall and a second side wall which are opposite; the servo motor includes stators and rotors which are separately arranged at two sides of the first sidewall; the positioning magnetic ring group includes positioning magnetic rings and rotating magnetic rings; the stators and the positioning magnetic rings are fixed to the outer side of the pressurization inner cavity; the rotors and the rotating magnetic rings are fixedly connected with the impeller; a distance sensor is arranged between each stator and the first side wall; each distance sensor senses the distance of the corresponding rotor relative to the first side wall; and the servo motor controls magnetic forces between the stators and the rotors according to a distance value so as to make the impeller suspended under the combined action of the positioning magnetic ring group and the servo motor and rotate in the pressurization inner cavity. According to the ventricular assist deviceof the application, with the cooperation of the servo motor and the distance sensors, the precise control of the servo motor over the impeller can be realized, and thereby, a suspended rotation posture of the impeller in the pressurization inner cavity is guaranteed to obtain a better blood pressurization effect.

The invention provides a large-flow oil pumping device with multiple radial plunger pistons. The large-flow oil pumping device with the multiple radial plunger pistons comprises a shell body, a driving assembly, a plunger piston valve body, at least five plunger piston assemblies and connecting parts. The driving assembly is fixed into the shell body; the plunger piston valve body is arranged in the shell body, an installing hole is formed in the middle part of the plunger piston valve body, and an eccentric wheel assembly stretches into the installing hole; the plunger piston valve body comprises at least five plunger piston installing parts arranged in the circumferential direction and distributed uniformly, every plunger piston installing part is provided with a radial plunger piston hole, an oil inlet hole and oil outlet holes communicating with the radial plunger piston hole, and every radial plunger piston hole is internally provided with a assemble boss. At least five plunger piston assemblies are correspondingly installed in at least five radial plunger piston holes and in contact with the rotating eccentric wheel assembly, and every plunger piston assembly comprises an oilsliding switch. Each of the connecting parts is formed on the every assemble boss and protrudes towards the side which the every oil sliding switch located on, or each of the connecting parts is formed on the every oil sliding switch and protrudes towards the side which the every assemble boss located on, and the area of each of the end faces of the free ends of the connecting parts is smaller than the area of the step face of the every assemble boss.

The invention discloses a water outlet device which comprises a water outlet body and a rotating part. The water outlet body is provided with a water passing cavity, the bottom wall and the side wall of the water passing cavity are provided with a water outlet hole and inclined water channels respectively, a plurality of protruding blocks are further arranged in the water passing cavity around the water outlet hole, an inclined water groove is formed between every two adjacent protruding blocks, and the tangential water flow rotation directions formed by the inclined water grooves and the inclined water channels are consistent; each protruding block is provided with a supporting surface; the rotating part extends into the water outlet hole, and a water outlet gap is formed between the rotating part and the water outlet hole; the rotating part is provided with impellers corresponding to the inclined water channels, abutting surfaces opposite to the supporting surfaces and a plurality of water pressing blocks corresponding to the inclined water channels; and pushing faces are arranged on the water pressing blocks in the water outlet directions of the inclined water channels and incline relative to the supporting surfaces, so that outlet water of the inclined water channels can push the abutting surfaces to be away from the supporting surfaces. The water outlet device provided by the invention can rapidly rotate under the action of high-pressure water flow and low-pressure water flow, and the water outlet effect is ideal.

The invention provides a device for achieving full-automatic emptying and boost of a solar water heater, relates to the field of solar water heaters, and aims to achieve emptying and boost functions by utilizing and controlling water backflow, so that freeze-proofing and easiness in use are achieved. The device comprises an electromagnetic valve, a U-shaped tube, a water flow switch, a booster pump and an electronic control meter. Controllable backflow water passes through the water flow switch, so that the electronic control meter is controlled, various devices are driven to achieve emptying and boost functions.

The invention relates to a device on carding machine, having cover against card tack on drum, wherein foreign matters such as fiber wastes, seed portions, and left leaves are separated through at least one opening. In order to change or control the constitution of the separated wastes and to enable the adjustment of the separation of the wastes, the opening for separating the foreign matters is at least disposed at the front of and / or behind exchangeable elements. Thereby, a pressure between the cover and the drum can be adjusted.

The invention provides a double-ejector circulating system of a proton exchange membrane fuel cell, which belongs to the technical field of proton exchange membrane fuel cells. The double-ejector circulating system is characterized in that an anode water-vapor separator and a cathode water-vapor separator are used for separating and removing liquid water in tail gas of an anode and a cathode of a galvanic pile; the anode pressure reducing valve and the cathode pressure reducing valve respectively reduce the pressure of the hydrogen and the pressure of the oxygen to preset pressure values; the anode electromagnetic valve and the cathode electromagnetic valve are used for regularly executing pulse type switching actions and removing accumulated water and impurities on two sides of the galvanic pile; the anode one-way valve and the cathode one-way valve prevent external air from entering the circulation loop at the exhaust moment; the anode ejector and the cathode ejector are used for respectively receiving hydrogen and oxygen to the mixing chamber, unreacted tail gas is entrained in a low-pressure area in the mixing chamber, and the hydrogen or the oxygen and the tail gas are subjected to momentum and mass exchange and then enter the galvanic pile. Water logging caused by circulation is greatly avoided, the performance of the fuel cell can be improved, and the service life of the fuel cell can be prolonged.

The invention discloses a cooling process and system for a liquid quenching medium. The cooling process comprises the steps that a quenching tank which needs to control the temperature of the liquid quenching medium is provided, and a heat exchanger is arranged in the liquid quenching medium; liquid carbon dioxide or liquid nitrogen is introduced into the heat exchanger to serve as a cooling medium; and heat exchange and cooling are carried out on the liquid quenching medium in the quenching tank by utilizing latent heat of vaporization of the liquid carbon dioxide or the liquid nitrogen. According to the cooling process and system for the liquid quenching medium, carbon dioxide and liquid nitrogen are used as the cooling medium, latent heat of vaporization of the low-temperature liquid carbon dioxide or low-temperature liquid nitrogen is fully utilized, and heat exchange and cooling are carried out on the high-temperature liquid quenching medium, so that the cooling strength is high,it is guaranteed that the liquid quenching medium is rapidly cooled; and in addition, re-liquefaction recycling of gaseous carbon dioxide and gaseous nitrogen is achieved, and the production cost is reduced.

The invention discloses a self-pressurized semiconductor cooling cold-therapy system which comprises a radiating bag strip (1), a pressurized radiating medium (2), a semiconductor refrigerating plate (3), a cooling cold-therapy belt (4), a refrigerating medium (5), a fastening belt (6), a heat-insulating fiber layer (7) and a semiconductor refrigerating controller (8). When blood circulation of a wounded tissue of a patient needs to be reduced, the temperature of the wounded tissue needs to be reduced, and a bedridden patient is prevented from pressure sores, the self-pressurized semiconductor cooling cold-therapy system can be bound to the wound part through the fastening belt (6), the semiconductor refrigerating controller (8) is regulated, and the cooling cold-therapy belt (4) which clings to the wound part is refrigerated and cooled when the cold end of the semiconductor refrigerating plate (3) absorbs heat; meanwhile, the hot end of the semiconductor refrigerating plate (3) releases heat for increasing pressure of the pressurized radiating medium (2) in the radiating bag strip (1), so that the wounded tissue can be pressed, blood circulation can be reduced, and the temperature of the wounded tissue is reduced, the purposes of reducing pains and reducing cell death risks are achieved.

The invention discloses purification equipment for industrial sewage treatment, which comprises a treatment box, a mounting plate is fixedly mounted on the inner wall of the treatment box, two fixed cylinders are symmetrically arranged on the upper surface of the mounting plate, a bidirectional motor is fixedly mounted on the inner wall of the treatment box, and the output end of the bidirectional motor extends into the fixed cylinder and is fixedly provided with a rotating disc, and the surface of the output end, located in the fixed cylinder, of the bidirectional motor is fixedly provided with a filter screen cylinder. According to the purification equipment for industrial sewage treatment, by arranging the bidirectional motor, filter screen cylinders, a flow guide pipe, a flow guide frame, a water pump and a water spray head, when the purification equipment is used, the two filter screen cylinders can be driven by the bidirectional motor to rotate, so that granular impurities in sewage are attached to the inner walls of the filter screen cylinders; and under the action of the water pump, the granular sundries are flushed through the water spraying head and are flushed into the flow guide frame to be discharged, so that the working efficiency is improved.

The invention provides a quantitative feeding textile printing device. The quantitative feeding textile printing device comprises a rack, a cloth transport mechanism, a stock bin, a printing mechanismand a cleaning mechanism; the printing mechanism comprises a rotary switching assembly, two spraying assemblies, a quantitative feeding assembly and synchronous printing assemblies, the cleaning mechanism is arranged above the rack and corresponds to the synchronous printing assemblies, the cleaning mechanism comprises a cleaning box and a blowdown tank, through the quantitative feeding assembly,the quantitative feeding assembly carries out printing, the quantitative feeding assembly carries out quantitative feeding on the other synchronous printing assembly located above the synchronous printing assembly which is in printing work, and under driving of a synchronous driving part, a printing screen net carries out synchronous moving printing on cloth transported on the cloth transport mechanism, and the problems that in the prior art, quantitative output of dye liquor cannot be achieved, during printing, printing patters are prone to pasting, and the printing quality is affected are solved.

The invention discloses a quenching medium rapid cooling process and device for heat treatment. The rapid cooling process comprises the following steps: providing a quenching tank for controlling thetemperature of a liquid quenching medium; providing a quenching evaporator, wherein the high-temperature liquid quenching medium circulates between the quenching evaporator and the quenching tank; introducing low-temperature liquid carbon dioxide or low-temperature liquid nitrogen into the quenching evaporator as a cooling medium; and using latent heat of vaporization of the low-temperature liquidcarbon dioxide or the low-temperature liquid nitrogen for carrying out heat exchange and cooling on the high-temperature liquid quenching medium in the quenching tank. Carbon dioxide and liquid nitrogen are used as cooling media, latent heat of vaporization of the low-temperature liquid carbon dioxide or the low-temperature liquid nitrogen is fully utilized, the high-temperature liquid quenchingmedium is subjected to heat exchange and cooling, the cooling strength is high, and it is guaranteed that the liquid quenching medium is rapidly cooled; and re-liquefaction cyclic utilization of gaseous carbon dioxide and gaseous nitrogen is realized, and the production cost is reduced.