95results about How to "Flow adjustment" patented technology

The invention discloses a preparation method of three-dimensional porous hexagonal boron nitride. The preparation method comprises steps as follows: step one, a precursor is placed into a crucible, wherein the precursor comprises a nitrogen source and a boron source, the nitrogen source is one or more of ammonia, urea, sodium azide, pyridine, melamine and ammonia borane, and the boron source is one of boron powder, boron oxide, boric acid, ammonium borate, sodium borohydride, boron carbide and ammonia borane; step two, the crucible is placed in a high-temperature furnace, vacuum pumping is performed to 1-40 Pa, gas is introduced and oxygen is eliminated; step three, the temperature is increased to 900-1,600 DEG C in 10 min-4 h, and a reaction is performed for 0.5-5 h; and the temperature is reduced to the room temperature, and three-dimensional porous hexagonal boron nitride is obtained. The preparation method of three-dimensional porous hexagonal boron nitride is simple in technology, complex raw material pretreatment and follow-up treatment are not needed, the repeatability is good, batch preparation can be achieved, and industrialized application is easy to achieve.

The invention discloses a method for purifying vinosity, comprising an oxidation reduction reaction which is carried out on the surfaces of solid particles attached with TiO2 photochemical catalyst layers under the irradiation of ultraviolet light after the body is mixed with oxygen or ozone. The invention also discloses a device for realizing the method for purifying the vinosity. In the invention, multiple groups of ultraviolet light sources are evenly arranged at each part of a reaction chamber to directly irradiate the body and the surface of the photocatalyst; the ultraviolet light can efficiently decompose unsaturated compounds in the body, such as aldehydes, fusel oil, sulfide and other harmful components under the action of catalyst, eliminates impurities and peculiar smell in thewine, eliminates spicy, stimulated and bran taste of green wine, eliminates the off-flavor of edible alcohol, and deeply promotes the inherent quality of the wine.

The present invention belongs to the technical field of material drying, and discloses a microwave and low-pressure superheated steam combined drying test apparatus and a drying method. The combined drying test apparatus is composed of a steam generator, steam opening valves, a heater, an inlet fan, an air velocity transducer, a temperature sensor, a microwave generator, a vacuum pump, an outlet fan, a net-shaped material tray, a weighing sensor, a running water valve and a drying box. The drying method comprises that low-pressure superheated steam is used as a drying medium of a closed drying system, and materials are dried by the superheated steam and microwave together. The interiors of agricultural products are heated, inside moisture transfer speed of the agricultural products is raised, drying of the agricultural products is accelerated, temperature difference between the inside and the surface is reduced, generation of thermal stress cracks is reduced, and the drying quality and the drying uniformity of the agricultural products are ensured. No dust or volatile substances are discharged into the air in the drying process, the exhaust gas is saturated steam and can be recycled, the heat utilization rate is raised and total energy consumption of drying is lowered.

The invention discloses a novel hydraulic engineering energy dissipater structure, and relates to the field of hydraulic engineering energy dissipation. The structure comprises a drainage face and a stilling pool arranged at the bottom end of the drainage face, a plurality of toe piers are arranged at the joint between the drainage face and the stilling pool, and an end sill is fixedly connected to the tail end of the stilling pool. A plurality of baffle piers are fixedly connected with the interior of the stilling pool, a water through groove where water can pass is reserved between every twoadjacent baffle piers, and baffle blocks are arranged in the water through grooves, located between the adjacent baffle piers and rotationally connected with the baffle piers. The rotary connection positions between the baffle blocks and the baffle piers are located at the positions close to the top ends of the baffle blocks. Water flows into the stilling pool, the baffle piers in the stilling pool block water, and therefore secondary consumption is carried out on water. The baffle blocks are rotationally connected with the baffle piers, water jacks open the baffle blocks and flows into the end sill through the water through grooves, water energy consumption can be increased since water jacks open the baffle blocks, and therefore water impact energy is reduced.

The invention discloses a water washing mechanism for a stone processing system, comprising a crusher shell, a through groove is formed in the top of the crusher shell, a water guide pipe matched withthe through groove is inserted in the through groove, and the water guiding pipe is in movable connection with the through groove. One end of the water guide pipe fixedly communicates with a water guide plate, and a plurality of evenly distributed nozzles are mounted on the lower surface of the water guide plate. The water guide plate is located in the inner cavity of the crusher shell, and the outer side wall of the water guide pipe is symmetrically fixedly connected with a sliding rod and a protruding rod. A position, corresponding to the sliding rod, at the inner wall of the through grooveis fixedly connected with a sleeve matched with the sliding rod, and one end, away from the water guide pipe, of the sliding rod is inserted in the sleeve and fixedly connected with a spring, the sliding rod is in slidable connection with the sleeve, and the other end of the spring is fixedly connected to the bottom in the sleeve. The water washing mechanism disclosed by the invention makes stonewashing more fully in a processing process, and water after washing can be recycled to avoid waste of water resources.

The invention discloses a turntable five-station polishing machine, which includes a working platform, a rotary worktable, a fixture, a polishing column, a dust removal system, and a control system. The axis of the working platform is fixedly provided with a rotary worktable. The polishing columns are distributed and fixedly arranged on the working platform, the polishing columns are arranged adjacent to the rotary worktable, the dust removal system is fixedly installed on the rotary worktable, the control system is arranged on the workbench, and the working The platform is electrically connected to the control system, the rotary table is electrically connected to the control system, the fixture is electrically connected to the control system, the polishing column is electrically connected to the control system, and the dust removal system is electrically connected to the control system. The control system is electrically connected. The invention has the characteristics of convenient operation, high efficiency, low production cost, strong practicability and the like.

The invention provides a portable intelligent liquid-cooling backpack. According to the technical scheme, the portable intelligent liquid-cooling backpack has the advantages that a refrigerating effect is achieved by a pipeline liquid cooling manner, the body temperature of a user is sensed by a temperature controller, a temperature signal is fed back to a control system, and the control system regulates refrigerant flow velocity in a targeted manner to maintain the refrigerating effect so as to allow the user to be comfortable; meanwhile, a soft pipeline is directly applied to the backpack, the complexity of a traditional cooling garment is lowered greatly, and wearing convenience is achieved; refrigerating devices such as a water tank and a water pump are arranged in the backpack, the weight of a complete-set cooling system is reduced, and the portability of the pipeline liquid-cooling backpack is increased; energy can be provided for the devices such as the water pump in the pipeline liquid-cooling backpack through a lithium battery or an external power supply, the lithium battery increases the portability of the pipeline liquid-cooling backpack, and the refrigerating duration of the pipeline liquid-cooling backpack is prolonged by the aid of the external power supply.

The invention relates to a microflow driving device based on osmosis. Two floor plates sandwiched by a semipermeable membrane and installed between two tank bodies of aqua storage tanks with constant volume body and connected by bolt and nut. Two tank bodies all have one vent of aqua storage tank. One inlet or outlet of one aqua storage tank is provided on the outer sidewalls of the two tank bodies and one opening communicated with the cavity for storing liquid is respectively on the corresponding point of the inner wall of the two tank bodies. The minipores are all dispersed on the two floor plates, wherein the aperture diameter of minipore is 0.4-2mm and the cutoff molecular weight of semipermeable membrane is less than the molecular weight of infiltration driving agent. On running, the aqua storage tank is filled with deionized water and another aqua storage tank is filled with infiltration driving agent, therefore the gas of the two aqua storage tanks are removed and the flow speed and stability of micropump can be measured after closing the vent. The whole structure is simple and the cost is low. The microflow driving device is convenient for carrying without external resource and continuously serves for many days and the liquid flow is stable, adjustable without pulse.

The invention relates to the field of auxiliary devices for light aircrafts, and particularly discloses a lifting platform for assembling a light aircraft. The lifting platform comprises a supportingbottom plate and a supporting top plate; a folding telescopic rack and stable telescopic rods are separately arrange between the supporting bottom plate and the supporting top plate; an adjusting sleeve and a lifting motor used for driving the adjusting sleeve to rotate are separately arranged at the top of the supporting bottom plate; the adjusting sleeve is arranged at the middle part of the supporting bottom plate; a positioning screw rod is in threaded connection with an inner cavity of the adjusting sleeve in a sliding manner; the top of the positioning screw rod is connected with a supporting shaft at the top of the folding telescopic rack; each stable telescopic rod comprises an inner rod and an outer sleeve; the bottom ends of the inner rods are fixedly connected onto the top surface of the supporting bottom plate; the top ends of the outer sleeves are fixedly connected onto the bottom surface of the supporting top plate; and the inner rods coaxially extend into the outer sleeves corresponding to the inner rods and can move axially. An accessory or a tool not to be carried can be sent onto the platform, so that the working efficiency is improved, and meanwhile, the output torque of the lifting motor can be improved.

The invention provides a method and device for treating white spirit by microwave aging acceleration. The method comprises the steps of sampling; carrying out component analysis; carrying out data processing; and carrying out microwave aging acceleration. The device comprises a microwave aging acceleration device for processing the white spirit analyzed by the method. In the method for treating the white spirit, proper microwave treatment conditions are obtained through experiments, the aging of the white spirit is accelerated, and the negative influence of microwave aging acceleration is reduced.

The invention relates to the technical field of bioreactors in medical instruments, and in particular relates to a method and a device for regulating a tower plate type perfusion bioreactor. The method for regulating the tower plate type perfusion bioreactor comprises the following steps of: (1), regulating a regulating valve on each layer of tower plate; (2), cultivating cells under same fluid inlet structure parameters; (3), determining a tower plate layer number N with an optimum cultivation effect; (4), computing the flowing speed M of a fluid on the surface of an N-th layer of tower plate; (5), computing structure parameters A(i) of a fluid inlet between adjacent layers of tower plates; (6), regulating the regulating valve on each layer of tower plate; and (7), continuing cultivating the cells on the surface of each layer of regulated tower plate. According to the method and the device, the structure parameters of an inflow port in each layer of tower plate in the perfusion bioreactor can be regulated, so that the fluid shear stress between the adjacent layers of tower plates can be regulated according to a geometric structure, an optimization way is provided for distribution of the fluid shear stresses in each layer of tower plate, and the fluid shear stresses of all layers of tower plates can be optimized.

The invention provides environment-friendly agricultural mechanical equipment and relates to the technical field of agricultural machinery. The environment-friendly agricultural mechanical equipment comprises a sprinkling tank, wherein a water tank is fixedly mounted inside the sprinkling tank, the top of the water tank communicates with a water inlet pipe, the top end of the water inlet pipe penetrates through the top of the sprinkling tank and is in threaded connection with a closing cover, a piston sealing cylinder is fixedly mounted at the right side of the water tank, the top of the piston sealing cylinder communicates with a water suction pipe, one end, far away from the piston sealing cylinder, of the water suction pipe communicates with the right side of the water tank, and one end, far away from the water tank, of the water suction pipe extends inside the piston sealing cylinder and is fixedly connected with a first one-way valve. According to the environment-friendly agricultural mechanical equipment, a rotating block is rotated to drive a rotating rod to rotate, a current limiter drives a locating block to downwards slide on a locating lever and limits the pipe diameterof a sprinkler pipe, thus, the flow velocity of the sprinkler pipe can be regulated, thus, the aim of saving sprinkling water is achieved, and the environment-friendly agricultural mechanical equipment is more environmentally friendly.

The invention relates to the technical field of medical instruments, and discloses an anesthetic atomization device for an anesthetist in an operating room. The anesthetic atomization device comprisesan atomization pipe, wherein first movement chambers are fixedly connected to the outer side of the atomization pipe, a second movement chamber is connected to the inner side of each first movement chamber, and a first coil is arranged on the inner side of each second movement chamber; and a first magnetic rod is connected to the inner side of each second movement chamber and the upper side of the corresponding first coil, a heating rod is connected to the upper side of each first magnetic rod, first connecting rods are rotatably connected to the left and right sides of each first magnetic rod, a first rotating rod is rotatably connected to the upper side of each first connecting rod, a first rotating plate is slidably connected to the upper side of each first rotating rod, and a triangular frame is arranged on the left side of each first rotating plate. According to the anesthetic atomization device for the anesthetist in the operating room, each first coil generates magnetic force repelling the corresponding first magnetic rod, so that the corresponding heating rod is driven to extend inwards to heat anesthetic mist, and the structure achieves the effects of heating liquid medicines and relieving the pain of a patient.

The invention provides a flow rate control device which comprises a pipe body. The pipe body can be connected with a delivery pipe, is capable of accommodating a fluid and is provided with a vent hole which penetrates through the pipe body in the radial direction and can be opened and closed. The flow rate control device provided by the invention controls the flow rate of fluid by a flexible gas instead of a rigid sluice valve, so that the direct impact of fluid on the pipe body is avoided, the abrasion, caused by fluid, on the pipe body is alleviated, the service life of the pipe body is prolonged, the phenomena of frequent change of the pipe body is avoided, and the maintenance workload and the production cost are reduced fundamentally.

The invention discloses a solid precursor source sublimation device and a solid precursor source sublimation method for semiconductor processing, and aims to overcome the defects of unstable volatilization and sublimation of a solid precursor source and low utilization rate of the solid precursor source. The solid precursor source sublimation device comprises a storage box, a plurality of trays installed in the storage box and electric heating temperature control plates installed at the bottoms of the trays, a plurality of material storage grooves used for loading solid precursor sources are densely distributed on the trays, a snakelike ventilation flow channel is formed in the storage box, and a carrier gas inlet and a mixed steam outlet are formed in the storage box. Two ends of the ventilation flow channel respectively communicate with the carrier gas inlet and the mixed steam outlet. The electric heating type solid precursor source storage and sublimation device can provide uniform and stable heat energy for volatilization and sublimation of a solid precursor source, avoids formation of a low-resistance channel phenomenon, and can still utilize some solid precursor sources which are easy to harden and have certain vapor pressure; and the utilization rate of the solid precursor source is improved while the solid precursor source steam with stable concentration is provided.

A pedal slow-release power plant for a simple shower is composed of an aqueduct, check valves, a pressurizing air bag, a water storage air bag and a switch. After the check valve, the pressurizing air bag, the check valve, the water storage air bag, the check valve and the switch are connected in sequence, a water pressing air bag is repeatedly trodden on, and water is gradually pressed into the water storage air bag. Due to the act of the switch, water in the water storage air bag becomes more and more, and a spring is stretched till enough water is stored. At the moment, the switch is turned on, due to the fact that reverse pressure is applied to the check valve between the water storage air bag and the pressurizing air bag to stop the water from flowing, the water is pressed out of one end of the water outlet check valve due to the restoring force of the spring of the water storage air bag, and water with pressure capable of being maintained for a certain time is provided with the simple shower. According to the pedal slow-release power plant for the simple shower, unceasing power water can be provided for the simple shower in a small-space environment without power water, and therefore the simple shower can not be limited by territories and space at all.

The invention discloses an oil cylinder which comprises an outer cylinder body and an inner cylinder body, wherein the outer cylinder body and the inner cylinder body are connected through at least one positioning connector. The inner cylinder body comprises a cylinder barrel, a front sealing cover and a rear sealing cover, the side, corresponding to the front sealing cover, of the outer cylinder body is provided with a conical opening, the outer side of the opening is fixedly connected with a spraying pipe, a conical head which is coaxial with the front sealing cover is fixedly connected to the outer side of the front sealing cover, and the conical head can penetrate out from the opening of the outer cylinder and plug the spraying pipe. A piston, a piston rod and a spring sleeved with the piston rod are arranged in the inner cylinder body, wherein the piston and the piston rod are coaxial, one end of the piston rod penetrates out from the piston, and the other end of the piston rod penetrates out from the front sealing cover and is connected with the conical head. After the structure is adopted, the conical head is driven by the piston rod to plug or depart from the spraying pipe slowly, and therefore the flow rate of water is reduced or increased.

The application describes a method for the preparative purification of RNA, which method is distinguished in that the RNA is purified by means of HPLC using a porous reversed phase as the stationary phase. The use of the porous reversed phase in this HPLC method is also described.

The invention discloses a special braided tube for high-pressure washing equipment. The braided tube comprises a washing tube, a connecting piece and a water stopping block. The upper end of the washing tube is connected with the connecting piece. The upper end of the connecting piece is connected with a speed control bin. One end of the speed control bin is fixedly connected with a motor. The shaft portion of the motor is fixedly connected with a screw rod. One end of the screw rod is rotatably connected with the inner wall of the speed control bin. The screw rod is rotatably connected with anut device. The upper and lower ends of the nut device are fixedly connected with limiting rods. The upper limiting rod is slidably connected with a sliding plate. The sliding plate is slidably and fixedly connected with the inner wall of the speed control bin. A first sliding plate is arranged under the sliding plate. The braided tube is special for the high-pressure washing equipment. The washing tube comprises a rubber layer, a metal layer and a PVC material layer. The metal layer can be well protected by the rubber layer, and prevent the rubber layer from being easily broken. The PVC material layer is not directly exposed to the air. As the washing tube is protected by the metal layer and the PVC material layer, the service life of the washing tube is greatly prolonged.

The invention relates to a reduction furnace chassis device variable in feeding flow velocity and belongs to the technical field of reduction furnaces. The reduction furnace chassis device comprises afurnace body and a chassis and is characterized in that the lower end of the chassis is connected with multiple feeding pipes communicated with the furnace body, the ends, facing the chassis, of thefeeding pipes are jet ports, the inner holes of the jet ports are conical, sliding rods are slidingly arranged in the feeding pipes, a baffle is fixed to one end of each sliding rod, the other end ofeach sliding rod penetrates out of the corresponding feeding pipe to be connected with an extensible mechanism, and the baffles are arranged close to the jet ports. The reduction furnace chassis device has the advantages that under the condition that the flow in each feeding pipe is invariable, the smaller a material channel is, the higher the flow velocity of the material passing through the material channel is, the higher the velocity of the jet material is, the feeding flow velocity is adjusted by adjusting the positions of the baffles, and the reduction furnace chassis device is flexible and convenient to operate, simple in structure and worthy of popularization and application.

A coloring nozzle for coloring an electric wire includes an insert member for containing coloring material, a nozzle element 54 connected to the insert member, and the like. The nozzle element 54 includes a first nozzle member 37 disposed at the insert member side, a second nozzle member 50 disposed at the electric wire side, and a connecting pipe 51 for connecting the first nozzle member 37 and the second nozzle member 50. The second nozzle member 50 includes a second large diameter part 151 disposed near the first nozzle member 37, and of which inner diameter is smaller than that of the first nozzle member 37; a small diameter part 152 disposed nearer the electric wire than the second large diameter part 151, and of which inner diameter is smaller than that of the second large diameter part 151; and a first large diameter part 153 disposed nearer the electric wire than the small diameter part 152, and of which inner diameter is larger than the small diameter part 152. An inside of the second nozzle member 50 is formed in a step shape.