19results about How to "Volume change" patented technology

The application discloses a smoke collecting structure of an oil fume extractor and the oil fume extractor. The smoke collecting structure comprises a smoke collecting cover, a smoke collecting cavity is arranged in the smoke collecting cover, at least one telescopic body capable of being telescopically extended outwards or telescopically retracted inwards relative to the smoke collecting cavity is arranged on the smoke collecting cover, and the telescopic body is used for changing the volume of the smoke collecting cavity. The volume of the smoke collecting cavity can be changed by arranging the telescopic body capable of being telescopically extended outwards or telescopically retracted inwards relative to the smoke collecting cavity on the smoke collecting cover, and the application range of the oil fume extractor is enlarged. The application further provides an oil fume extractor which comprises a machine box and further comprises the smoke collecting structure of the oil fume extractor arranged at the bottom of the machine box.

The utility model discloses a soybean phospholipid extraction treatment device, which relates to the technical field of soybean phospholipid extraction treatment and comprises a bearing seat, a first rotating shaft penetrates through one side of the bearing seat, one end of the first rotating shaft is connected with a first motor, and a mixing drum is arranged at the other end of the first rotating shaft. End covers are in threaded connection with two ends of the mixing cylinder, and a second rotating shaft penetrates through the inner side of the end cover on the left side of the mixing cylinder. According to the utility model, through the arrangement of the mixing cylinder, the movable plates, the stirring rods and the like, the first motor is started to drive the first rotating shaft and drive the mixing cylinder to rotate, and meanwhile, the second motor is started to drive the second rotating shaft to rotate, so that the movable plates move in opposite directions, thereby changing the volume of a space in which materials are positioned, and increasing the height of the materials; the stirring device can be in contact with a reaction material on the inner wall of the mixing barrel, so that the progress of soybean phospholipid extraction work can be conveniently accelerated through double operations of changing the material placement space and stirring.

The invention relates to an open rotor engine. The open rotor engine includes: a rotor blade; the pitch angle of the stator blade can be adjusted through a variable pitch mechanism; the adjustable acoustic liners are arranged on the surfaces of the stator blades; the adjustable acoustic liner comprises a thin film, a perforated plate and a piezoelectric plate, and the piezoelectric plate is arranged on the thin film; the voltage adjusting mechanism is used for adjusting the voltage acting on the piezoelectric plate to adjust the force applied to the film so as to change the volume of the acoustic cavity of the acoustic liner; wherein the voltage regulating mechanism comprises a variable resistance structure, two electrode conductors and a power supply; the variable resistance structure is arranged on the inner wall of the mounting hole; the two electrode conductors are arranged on the rotating shaft at intervals and are in electric contact with the variable resistance structure; the two electrode conductors are electrically connected to the two ends of the piezoelectric plate respectively; the power supply and the variable resistance structure form an electric loop. According to the open type rotor engine, under different working conditions, the volume of the acoustic lining acoustic cavity is controlled through the piezoelectric plate, and the targeted noise reduction requirement of an aero-engine under the complex working condition is met.

The utility model provides a silencing exhaust pipe of a motorcycle, belongs to the technical field of motorcycle components, and solves the technical problems that an existing silencing exhaust pipe is poor in silencing effect, cannot balance exhaust back pressure and the like. Comprising an air outlet end cover piece and an air inlet end cover piece, an exhaust pipe is arranged between the air outlet end cover piece and the air inlet end cover piece, a flow guide piece, a baffle piece and a ventilation silencing piece are sequentially arranged in the exhaust pipe from front to back, an air outlet pipe is arranged between the air outlet end cover piece and the ventilation silencing piece, and a flow guide pipe is arranged between the ventilation silencing piece and the baffle piece. According to the utility model, multiple times of volume mutation can be carried out, density and pressure are reduced, noise is weakened, flowing direction can be changed, kinetic energy is reduced, turbulent flow can be generated, noise is counteracted while exhaust efficiency is ensured, waste gas can be divided into a plurality of fine air flows, and the generated noise is absorbed and counteracted through a resonance effect, so that a drainage channel can be formed, condensate water can be discharged, and corrosion is avoided; pressure mutation can be relieved, exhaust back pressure is balanced, and noise can be reduced conveniently.

The utility model relates to the technical field of charging equipment, in particular to a wearable power bank which comprises charging main bodies, connecting assemblies are arranged at the two ends of each charging main body, first charging ports are formed in the two sides of each charging main body, and the first charging ports in every two adjacent charging main bodies are connected through a transmission line. The first charging port is connected with the transmission line in an inserted mode. According to the utility model, the elastic band, the connecting block, the clamping block and other components are arranged, the connecting block component, the clamping block component and the elastic band are matched with each other in the use process, so that the two charging main bodies are connected, and meanwhile, the transmission line is matched with the charging port I, so that the two adjacent charging main bodies are connected into a whole; and then the corresponding number of charging main bodies are connected end to end, the user can conveniently wear the device on the hand, meanwhile, the number of the charging main bodies can be adjusted according to actual needs, the overall size of the device is changed, and the user experience is improved.

The present application relates to an open rotor engine. The open rotor engine includes: rotor blades; stator blades, which can adjust the pitch angle through a variable pitch mechanism; an adjustable acoustic liner, which is arranged on the surface of the stator blades; the adjustable acoustic liner includes a film, a perforated plate and a piezoelectric sheet, and the piezoelectric sheet is arranged on the film; a voltage regulating mechanism, which is used to adjust the voltage acting on the piezoelectric sheet to adjust the force applied to the film to change the volume of the acoustic cavity of the acoustic liner; wherein the voltage regulating mechanism includes a variable resistor structure, two electrode conductors and a power supply; the variable resistor structure is arranged on the inner wall of the mounting hole; the two electrode conductors are arranged on the rotating shaft at intervals and are in electrical contact with the variable resistor structure; the two electrode conductors are electrically connected to the two ends of the piezoelectric sheet respectively; the power supply and the variable resistor structure form an electrical circuit. The open rotor engine of the present application realizes the control of the volume of the acoustic cavity of the acoustic liner through the piezoelectric sheet under different working conditions, and realizes the targeted noise reduction requirements of complex working conditions of the aircraft engine.

The present invention relates to an automatic folding box for a multifunctional gatekeeping robot, comprising a control box, a chassis connected to the control box, an upper closed box plate hinged on the chassis, a first folding closed box plate, a lower closed box plate and a second folding closed box plate, a mounting bracket connected to the inner wall of the chassis, a box door frame hinged between the first folding closed box plate and the second folding closed box plate, and a box door mounted on the box door frame, wherein the mounting bracket is provided with an adjustment mechanism, and the upper closed box plate, the first folding closed box plate, the lower closed box plate and the second folding closed box plate are all connected to the adjustment mechanism. The automatic folding box for the multifunctional gatekeeping robot can fold and store the four box plates constituting the outer shell of the box into the interior of the box through the adjustment mechanism arranged in the box when there is no need to store express delivery, so that the occupied space of the entire box is greatly reduced, and it can also be conveniently unfolded when in use, which is more flexible and changeable.

This invention belongs to the field of medical testing supplies technology, specifically relating to a mixing-type virus sampling and extraction tube. The tube includes a tube body with an opening at the top, the top of which is covered with a sealing film. A cap is connected to the top of the tube body for sealing the top. The cap has a dropper nozzle with a drip channel communicating with the inside of the tube body. A side channel is also provided inside the dropper nozzle, communicating with the drip channel. A trachet is located on the cap, passing through the drip channel and the side channel. The outer diameter of the trachet is smaller than the inner diameter of the drip channel. One end of the trachet is connected to an air bladder, and the other end is connected to an inflation bladder. The air bladder and inflation bladder are located on opposite sides of the cap. In this invention, the air bladder is inflated / deflated, causing a change in its volume, which in turn compresses and stirs the test solution inside the tube body, ensuring uniform mixing of the sample and lysis buffer and guaranteeing accurate test results.

This invention provides a passive magnetorheological damper with adjustable swing gap, comprising a cylinder, a piston rod, and a piston assembly. The cylinder includes a cylinder barrel with openings at both ends along the axial direction and end caps respectively connected to the openings of the cylinder barrel. The piston assembly is slidably disposed within the cylinder barrel. The connecting end of the piston rod is connected to the piston assembly, and the free end of the piston rod extends axially through the end caps. The piston assembly includes a piston end cap and several damping components distributed circumferentially on the piston end cap. The connecting ends of the damping components are hinged to the piston end caps, and the free ends of the damping components can be driven to move away from the inner wall of the cylinder barrel. The invention also includes an adjustment component disposed within the cylinder barrel, which drives the free ends of the damping components to swing away from the inner wall of the cylinder barrel around the hinge point. This damper requires no external power supply or sealing element, has a mechanically adjustable swing gap, a compact structure, and a large output damping force, which is beneficial for the further promotion and application of magnetorheological technology.

This invention belongs to the field of black phosphorus preparation technology, and particularly relates to a method for preparing black phosphorus thin films with controllable thickness based on CVT. The technical problem to be solved is the technical challenge of large-size film growth in the industrial preparation of black phosphorus. Key technical points: S1, Selecting a "Z-shaped" quartz tube as the reaction vessel; S2, Preparing an epitaxial growth substrate with lattice-inducing ability; S3, Loading the quartz tube with the high end as the raw material conversion zone and the low end as the epitaxial growth zone; wherein, loading the raw material conversion zone involves placing a mixed phosphorus source and mineralizer at the high end of the quartz tube; loading the epitaxial growth zone involves placing the substrate at the low end of the quartz tube; S4, After vacuum sealing the quartz tube, a seed layer is generated, and under the induction of the seed layer, black phosphorus grows laterally along the surface of the substrate; S5, Cooling the quartz tube to room temperature at a certain cooling rate to obtain a cooled black phosphorus film of a certain thickness.

The invention discloses a buoy demonstration device which comprises a hollow transparent column and a buoy model arranged in the hollow transparent column. The hollow transparent column is provided with liquid storage cavities arranged up and down, and the liquid storage cavities are used for storing water or saline water; the buoy model comprises a transparent cylindrical shell, the interior of which is provided with a sealed space, and the lower end of which is provided with a mounting groove; the first oil pump assembly is mounted in the sealed space; the first oil bag is installed in the installation groove, and the first oil bag is connected with the first oil pump assembly through a first pipeline penetrating through the transparent columnar shell in a sealed mode; the battery is installed in the sealed space and used for supplying power to the buoy model. The volume of the first oil bag is changed through the first oil pump assembly, so that the buoyancy of the buoy model is changed, and the buoy model ascends or dives in the liquid storage cavity; and the transparent columnar shell and the hollow transparent column can be convenient for personnel to watch the action process, so that more intuitive science popularization teaching is realized.

This application provides a container assembly and a cooking device, relating to the field of kitchen appliance technology. The cooking device includes: a housing and a food container disposed within the housing and at least two heating devices, the at least two heating devices being used to heat food within the food container; a cooking plate disposed within the food container having a connecting portion, the connecting portion directly or indirectly abutting against the bottom surface of the food container; a partition disposed within the food container, the edge of the partition abutting against a first surface of the connecting portion opposite to the bottom of the food container and the inner wall of the food container, dividing the food container into at least two cooking chambers; the partition can be selectively moved to change the capacity of the cooking chambers.

The utility model discloses a crop cultivation sowing motor vehicle, belongs to the technical field of crop cultivation, and aims to solve the problems that a seed accommodating cavity in a vertical disc seed-metering device is fixed, the size of the accommodating cavity cannot be flexibly changed according to the size of seeds, and the seeds are easily wasted or the number of the planted seeds is small. Comprising a diesel engine set and a transmission assembly, the diesel engine set provides power for the device, a motor box is connected to the lower end of the side face of the diesel engine set, a storage box is installed at the lower end of the side, away from the diesel engine assembly, of the motor box, and a vertical plate is connected to the lower end of the storage box and rotationally connected with a seeding roller; the seed metering roller is provided with a plurality of groups of uniformly distributed seed cavities. According to the crop cultivation and sowing motor vehicle, by arranging the adjusting assembly, the size of the seed cavity can be flexibly changed according to the size of seeds, so that the phenomena that the seeds are wasted and the number of the seeds is small are prevented, and the practicability of the device is improved.

The utility model relates to the technical field of 3D printing, and discloses a heat preservation device of a conveyor belt type 3D printer, which comprises a lower box body, an adjusting mechanism and a frame assembly, the lower box body comprises a cloth layer, a pearl wool layer and a heat preservation aluminum foil layer, the top of the lower box body is provided with a fixedly connected corrugated sheet, and the adjusting mechanism is arranged on the lower box body. And the upper box body fixedly connected with the corrugated sheet is installed at the top of the corrugated sheet, the adjusting mechanism is located on the back side of the lower box body, and the adjusting mechanism comprises a supporting plate, a threaded rod, a fixing plate, a threaded sleeve, a connecting plate, an adjusting rod and an adjusting plate. According to the heat preservation device of the conveyor belt type 3D printer, by rotating a hand wheel, a threaded rod and a threaded sleeve are used for driving an adjusting rod and an adjusting plate to move upwards, the adjusting plate drives an upper box body to move upwards, and a corrugated sheet deforms and extends through the moving distance between the threaded sleeve and the adjusting plate, so that the overall size is changed; and the device can adapt to conveyor belt type 3D printers of different models and sizes.

The present invention provides a device for testing the energy consumption of pulping of a pulper, and relates to the technical field of testing the energy consumption of pulping, comprising a pulper body, wherein an inlet end is arranged at the top of the pulper body, and an outlet pipe is opened at the bottom side of the pulper body, and a drive replacement component is arranged at the bottom of the pulper body, and the drive replacement component comprises a slide rail, and the concentration and volume of the raw materials are adjusted by adjusting the component, and the raw materials are sent into the interior of the pulper through a conveying pipe, so that the influence on the energy consumption under different concentrations and volumes can be obtained, and the feed speed at the inlet end of the pulper is changed by the conveying component, so as to obtain the influence on the energy consumption of the pulper under different feed speeds, and the drive motors of different powers can be replaced by the drive replacement component to drive the pulper to grind, so as to obtain the influence of different power driving devices on the refining energy consumption, and the low consumption factors when different raw materials are used can be obtained by comparison, so that the test is simpler.

The present invention relates to a method (100) for determining the properties of a sample fluid in an IVD analyzer (10), the method comprising the steps of: introducing (110a) a first fluid (1) into a fluid system (35) of the IVD analyzer (10), wherein the fluid system (35) includes a channel (4) having an elastic sealing element configured to change the cross-section of the channel (4) in response to a change in local pressure state; introducing (110b) a sample fluid (2) spatially separated from the first fluid (1) into the fluid system (35); contacting (120) a conductivity sensor unit (5) in the channel (4) with the first fluid (1); and using the conductivity sensor unit (5) to detect (130) the first fluid (1) during a conductivity detection time span (cdts). A set of conductivity parameter values, wherein the conductivity parameter values ​​depend on the cross-section of the channel; and the properties of the sample fluid (2) are automatically determined (150) based on the detected set of conductivity parameter values ​​of the first fluid. This invention can be considered efficient, environmentally friendly, and adds significant value to existing IVD fluid sensor systems. Importantly, patients benefit from the additional parameters available from the IVD system. Because this invention allows for adding value and functionality to existing IVD systems without adding additional components, it can be considered very environmentally friendly in the sense of a green invention.

The invention relates to an energy-saving type flue-cured tobacco redrying device which comprises a drying oven used for drying tobacco leaves or tobacco stems, the drying oven is provided with a moisture discharging opening used for discharging humid air and an air supplementing opening used for fresh air to flow in, and a recycling pipeline used for recycling the humid air is communicated between the moisture discharging opening and the air supplementing opening of the drying oven. The recycling pipeline is further provided with a condensation module used for promoting condensation of moisture in the humid air, the moisture discharging opening communicates with a moisture discharging pipeline connected with the recycling pipeline in parallel, the moisture discharging pipeline is provided with a moisture discharging fan used for sucking the humid air, and the air supplementing opening communicates with a ventilation pipeline connected with the recycling pipeline in parallel. And a circulating fan for sucking air from the air supplementing opening is also arranged in the drying oven. The energy recovery device not only can recover part of energy, but also can reduce the loss amount of aromatic substances of tobacco leaves, reduce the influence of discharged humid and hot air on the quality of tobacco flakes, and reduce the pollution to the environment at the same time.

The utility model relates to the technical field of hydraulic oil cylinders, and discloses a piston rod damping device for a hydraulic oil cylinder, which comprises a piston rod, a fixing block is arranged at the tail end of the piston rod, a damping box is arranged on one side, far away from the piston rod, of the fixing block, and an air cavity is hermetically arranged in the damping box and is divided into a first cavity and a second cavity along the length direction of the piston rod; the first cavity is located on the side, away from the piston rod, in the damping box, a damping mechanism for conducting damping protection on the piston rod is arranged in the first cavity, and the damping mechanism comprises a push rod slidably arranged on the inner top wall of the damping box in a penetrating mode and a floating piston arranged at the end of the push rod. The push rod is parallel to the length direction of the piston rod and matched with the first cavity, a connecting ring used for being connected with external equipment is arranged on the side, extending out of the damping box, of the push rod, and a plurality of through holes used for generating the damping effect are distributed in the floating piston in the circumferential direction. The effect of prolonging the service life of the hydraulic oil cylinder is achieved.

The invention discloses an electrolytic hydrogen production electrolyte liquid mutual injection device, and relates to the technical field of electrolysis, the electrolytic hydrogen production electrolyte liquid mutual injection device comprises a first transfer bin, a thick electrolyte storage bin and a light electrolyte storage bin, the first transfer bin is connected with the thick electrolyte storage bin and the light electrolyte storage bin through two second conveying pipes; and a first driving motor is installed on the first transfer bin in a matched mode, the first transfer bin is connected with the first storage bin and the second storage bin through a set of third conveying pipes, driving pumps are installed on the corresponding third conveying pipes in a matched mode, a flow turning column is installed in the first transfer bin in a running fit mode, and a plurality of communicating holes are formed in the flow turning column. The device is suitable for the situation that the pressure in the concentrated electrolyte storage bin is prone to fluctuating within a certain range, the electrolyte concentration of the concentrated electrolyte is monitored through the concentration sensor in the first storage bin in the embodiment, the situation that the pressure in the concentrated electrolyte is changed within a large range can be prevented, and safety and stability are improved.