74results about How to "Control rate" patented technology

The invention belongs to the technical field of tunnel supporting, and particularly relates to a yielding type constant-resistance energy absorption steel arch. The steel arch is formed by assembling a plurality of profile steel units and a plurality of constant-resistance yielding devices, and the constant-resistance yielding devices are arranged among the profile steel units; the constant-resistance yielding device comprises an outer supporting frame and an inner supporting frame, one end of the inner supporting frame extends into the outer supporting frame, the inner supporting frame moves in a guiding mode along the outer supporting frame, and constant-resistance friction structures are arranged on the mutual contact faces of the outer supporting frame and the inner supporting frame. A constant-resistance sleeve is arranged on one of the outer supporting frame and the inner supporting frame, an anchor cable is arranged on the other one of the outer supporting frame and the inner supporting frame, one end of the anchor cable penetrates into the constant-resistance sleeve, a constant-resistance sliding body is arranged on the portion, penetrating into the constant-resistance sleeve, of the anchor cable, and the constant-resistance sliding body slides in the constant-resistance sleeve in a guiding mode with constant resistance. The constant-resistance yielding device can play a dual constant-resistance yielding role, so that the steel arch can play a good supporting role on the basis of adapting to surrounding rock deformation, and the safety of a supporting system is improved.

The embodiment of the invention provides a control method of an oxygen generation system and an adjustable oxygen generation system, and belongs to the technical field of medical instruments. The control method of the oxygen generation system comprises the steps that 1, the threshold value interval of a pulse rate normal value and the threshold value of an oxyhemoglobin saturation normal value are obtained; 2, receiving a pulse rate monitoring value and a blood oxygen saturation monitoring value of a user of the oxygen generation system; 3, according to the threshold value interval, the threshold value, the received pulse rate monitoring value and the received oxyhemoglobin saturation monitoring value, the oxygen output quantity of the oxygen generation system is controlled, and the oxygen output quantity is the oxygen generation pressure and / or the oxygen output rate. According to the method, the performance parameters of the oxygenerator can be timely and automatically adjusted according to the physiological parameter change of the user of the oxygenerator, so that the requirements of the user at the current moment are met.

The invention provides an aluminum-based composite material reinforced by nickel-coated silicon carbide through a magnetron sputtering dry method and a preparation process of the aluminum-based composite material, and relates to the technical field of metal-based composite materials and advanced electronic packaging thermal management materials. Comprising the following steps that S1, silicon carbide particles coated with nickel through a magnetron sputtering dry method and aluminum powder are put into a mold to be subjected to compression molding, and an initial blank is obtained; and S2, the initial blank prepared in the step S1 is placed in a re-pressing sintering furnace under the inert gas protection condition, continuous re-pressing is conducted under the temperature condition ranging from the temperature lower than the aluminum melting point by 50 DEG C to the temperature higher than the aluminum melting point by 200 DEG C, and the nickel-coated silicon carbide reinforced aluminum-based composite material obtained through the magnetron sputtering dry method is obtained. The aluminum-based composite material reinforced by magnetron sputtering dry nickel-coated silicon carbide disclosed by the invention is excellent in heat-conducting property and mechanical property and long in service life.

The invention mainly relates to the technical field of high-performance ceramic filler nano titanium dioxide, and discloses a preparation method of high-dispersion nano titanium dioxide, which comprises the following steps: slowly dropwise adding a pretreated titanium source into a mixed solvent to prepare a titanium source solution; the preparation method comprises the following steps: adding water and a mixed inhibitor into a reaction kettle, uniformly stirring, slowly dropwise adding the prepared titanium source solution into the reaction kettle, and continuously stirring in the dropwise adding process; cooling the product to room temperature, adding a dispersing agent, aging for a period of time, and slowly adding nano silicon dioxide sol; washing the aged product, and then carrying out vacuum drying treatment; and calcining the dried product at 300-350 DEG C for 1-1.5 hours, then heating to 480-550 DEG C, calcining for 2-2.5 hours, and controlling the heating rate to be 1.5-2 DEG C / min, thereby obtaining the nano titanium dioxide product with uniform granularity and high dispersity after calcining. According to the invention, through optimization of the preparation process, the particle size of the nano titanium dioxide is in a small range, and good particle size uniformity and dispersibility are still kept.

The invention relates to the technical field of solar cells, particularly provides a preparation method of a TOPcon cell, and aims to solve the problem that a filling factor is difficult to maintain or increase while an open-circuit voltage is increased by an existing preparation method of the TOPcon cell. In order to achieve the purpose, the preparation method of the TOPcon battery comprises the steps that a battery base is provided and comprises a substrate, a doping layer, a passivation layer and a first anti-reflection layer, and the doping layer, the passivation layer and the first anti-reflection layer are sequentially formed on the first side of the substrate; forming a first groove, wherein the first groove extends into the first anti-reflection layer or the passivation layer from the surface of the first anti-reflection layer; printing metal slurry in the first groove; the metal slurry is heated and sintered, heating sintering is adopted, and the slurry penetrates through the passivation layer and then forms ohmic contact with the doping layer. In addition, under the condition that the sintering temperature is reduced, the metal slurry in the first groove can corrode the residual passivation layer, so that good ohmic contact is formed between the metal slurry and the doping layer, and the filling factor of the battery is kept.

The invention discloses an automatic discharging device suitable for electronic display glass substrate production. The automatic discharging device comprises a kiln pool bottom, a supporting structure, a discharging opening and two first steel structures, a sliding rail, a sliding block, a double-rod air cylinder, a bottom plate, a bottom plate and a plug are arranged between the two first steel structures, and cooling mechanisms are arranged in the bottom plate and the plug. Second steel structures are arranged at the positions, located on the two sides below the discharging port, of the bottom face of the supporting structure, and single-rod air cylinders, connecting plates, lifting ring blocks, a plurality of hanging pieces, universal joints, burning guns and pipe hoops are arranged below the second steel structures. Through the arrangement of the double-rod air cylinder, the plug and the cooling mechanism, the speed of molten glass flowing out of the discharging opening is successfully, rapidly and efficiently controlled, non-manual and controllable starting and stopping in the discharging process are achieved on the whole, the structural arrangement is exquisite, and the safety in the discharging process is greatly improved.

The invention discloses a preparation method of a copolyamide hot melt adhesive with low VOC (volatile organic compound) emission, which comprises five steps of feeding, salt forming reaction, polymerization reaction, pressure release and negative pressure stage, and is mainly characterized in that the low-VOC copolyamide hot melt adhesive is produced and synthesized by adjusting a production process, mainly adjusting a reaction process in the salt forming stage in a polyamide hot melt adhesive synthesis process. The copolyamide hot melt adhesive is synthesized by adopting a specific salt forming process and a synthesis route, and the VOC emission of copolyamide is low and does not exceed 10g / kg.

The utility model belongs to the technical field of packaging machines, and particularly relates to a screw packaging machine which comprises a feeding table, a conveying belt is embedded in the upper side of the feeding table, a first motor is fixedly installed on the front side of the feeding table, and the output end of the first motor is fixedly connected with a driving shaft of the conveying belt. A supporting frame is fixedly connected to the edge of the upper side of the feeding table, a hopper is fixedly connected to the upper side of the supporting frame, a feeding cavity is formed in the upper side of the hopper, and a discharging opening is fixedly connected to the lower side of the hopper. The problems that in the discharging process of an existing device, the discharging speed cannot be controlled, a discharging mechanism often cannot control the guiding and opening size of screw discharging, the size of a packaging bag of a packaging mechanism is not matched, packaging fails, and screws are disengaged from the packaging mechanism are solved.

The utility model relates to a plunger type exhaust screw, which comprises a screw unit, a plunger unit and a nozzle, the screw unit comprises a material pipe, a screw, a screw head and an exhaust valve, the screw head and the screw are sequentially arranged at the axis of the material pipe, and the exhaust valve is arranged on the side wall of the material pipe; the plunger unit comprises a plunger material pipe and a plunger rod, the plunger material pipe is communicated with the screw head, the plunger rod is movably arranged in the plunger material pipe, and the top of the plunger material pipe is communicated with a nozzle. According to the utility model, through the arrangement of the plunger material pipe, molten materials are firstly injected into the plunger material pipe to be stored, and then the materials are extruded through the plunger rod, so that the extrusion rate and the extrusion amount can be controlled, and the device is suitable for precise injection molding.

The utility model discloses an unmanned aerial vehicle aquaculture automatic feeding device which comprises a sowing unmanned aerial vehicle, a material scattering mechanism is arranged in the middle of the sowing unmanned aerial vehicle, the material scattering mechanism comprises a material storage mechanism, an auxiliary mechanism, a material discharging switch mechanism and a sowing mechanism, the material storage mechanism is arranged in the middle of the sowing unmanned aerial vehicle, and the auxiliary mechanism is arranged in the middle of the sowing unmanned aerial vehicle. The auxiliary mechanism is arranged on the lower side of the storage mechanism, the discharging switch mechanism is arranged on the lower side of the auxiliary mechanism, and the sowing mechanism is arranged on the lower side of the discharging switch mechanism. According to the unmanned aerial vehicle aquaculture automatic feeding device, an electric push rod stretches out and draws back to drive a discharging bin plate to move, and the discharging bin plate is matched with a first notch of a discharging plate; and an electric push rod is arranged on the outer side of a second sowing shell, so that the situation that the electric push rod is damaged due to the fact that powder of the feed falls into the electric push rod is avoided.

The application provides a high-porosity Raney nickel electrode and a preparation method thereof, and relates to the technical field of Raney nickel electrodes and preparation thereof. The preparation method of the high-porosity Raney nickel electrode effectively controls the dealuminization rate and the pore uniformity through a preparation process of'sintering treatment + special electrochemical dealloying treatment', and stably prepares the high-porosity Raney nickel electrode. A new process for preparing the high-porosity Raney nickel electrode in an environmentally friendly manner is provided, which replaces the traditional corrosion pore-forming process of a strong alkaline chemical solution and reduces pollution. The prepared high-porosity Raney nickel electrode has a high porosity of up to 52%, and the pore structure is stable, so that the catalytic activity and mechanical stability of the electrode are effectively improved.

The invention relates to the field of fluorine chemical processes, in particular to a molybdenum hexafluoride sampling device and method. The device comprises a molybdenum hexafluoride steel cylinder, an inert gas steel cylinder, a buffer bottle, a first-stage absorption bottle, a second-stage absorption bottle and a third-stage absorption bottle, the absorption liquid is filled into the three-stage absorption bottle and is weighed, the pipeline is vacuumized and replaced after the three-stage absorption bottle is connected, the absorption bottle is purged, and the buffer bottle is vacuumized. The method comprises the following steps: heating a molybdenum hexafluoride steel cylinder, filling the molybdenum hexafluoride steel cylinder into a buffer bottle, filling inert gas, introducing the inert gas into an absorption bottle for absorption, purging a pipeline, weighing the absorption bottle, and detecting metal impurities by using ICP-OES (Inductively Coupled Plasma-Optical Emission Spectrometer). According to the method, the problem that metal impurities in high-purity molybdenum hexafluoride are difficult to safely and accurately sample is solved, and a reliable and practical solution is provided for purity quality control of the key material molybdenum hexafluoride in the fields of semiconductors, nuclear industry and the like.

A polythiol composition according to exemplary embodiments includes at least two different polythiol-based compounds, wherein a peak area (%) of the polythiol compound represented by C8H18S6 , which is measured through a high performance liquid chromatographic (HPLC) analysis graph obtained at a wavelength of 230 nm, ranges from 0.90% to 1.30%. By controlling the sub-polythiol compound, an optical product having excellent transmittance and optical properties can be manufactured.

The feeding adjusting device for the PIR material production system comprises a blanking piece and a conveying piece, the blanking piece comprises a material storage frame box, the top end of the material storage frame box is open, a blanking frame is vertically fixed to the bottom face of the material storage frame box in a penetrating mode, a blanking roller is horizontally and rotationally connected to the lower side of the interior of the material storage frame box, and the conveying piece is arranged on the lower side of the material storage frame box. A discharging groove is formed in the outer circumferential face of the discharging roller, a speed adjusting motor is horizontally fixed to the outer end face of the storage frame box, the output end of the speed adjusting motor is fixed to a rotating shaft of the discharging roller, the conveying part comprises a collecting hopper, the collecting hopper is fixedly communicated to the bottom face of the discharging frame, and a control part is arranged at the bottom end of the collecting hopper in a communicated mode. The bottom end of the control piece communicates with a conveying pipe, and a plurality of air inlet pipes are transversely arranged on the outer circumferential face of the conveying pipe. The utility model overcomes the problems that the size of the material outlet in the feeder is manually adjusted in the prior art, the manual adjustment precision is not high, and the size of the material outlet in the feeder cannot be kept constant during continuous feeding, so that the feeding precision is influenced.

This invention discloses a high-crack-resistant cement-fly ash stabilized base course material, belonging to the field of road engineering technology. The material comprises the following components by mass percentage: 2.0-3.0% cement, 16-20% fly ash, and the balance being stabilized aggregate. The cement is an external admixture, the fly ash is an internal admixture, and the gradation of the stabilized aggregate conforms to the specifications of CF-A-2L or CF-A-2S in JTG / T F20-2015. This invention, by adopting a "low cement, high fly ash" mix design, controls the 7-day unconfined compressive strength within a reasonable range of 3.5-4.5 MPa, effectively avoiding the problem of regular transverse cracks in the base course caused by excessively high early strength. Simultaneously, the high fly ash content ensures the continuous growth of the material's later strength, with its 21-day unconfined compressive strength remaining stable above 6 MPa. Its overall performance is superior to the mix ratios recommended by current standards. This invention is particularly suitable for highway base course construction in arid regions with large temperature differences, such as Xinjiang.

An aerosol-generating device is disclosed. The aerosol-generating device includes: a storage chamber for storing an aerosol-generating substance; the core material is communicated with the storage chamber; a heat-generating body in contact with the core material and including nanoparticles that generate heat by surface plasmon resonance; and a light source configured to emit light toward the heat-generating body. The heat-generating body includes: a first portion that receives light emitted from the light source; and a second portion disposed outside the first portion and having a plurality of holes formed therein.

A pneumatic three-jaw material grabbing device with an improved structure comprises a base plate, a rotary disc, a rotary air cylinder, three workpiece clamping hands, a linear guide rail, a sliding plate and a driving rod, a shaft hole is formed in the base plate, the driving end of the rotary air cylinder penetrates through the shaft hole to be arranged on the upper side face of the base plate, and the lower end portion of the driving end is combined with the center of the upper side face of the rotary disc. The linear guide rails are arranged on the lower side face of the base plate in a radial mode at equal intervals and surround the rotary disc, the sliding plate is arranged on the linear guide rails in a sliding mode, one end of the driving rod is hinged to the inner side of the periphery of the rotary disc, the other end of the driving rod is hinged to the sliding plate, and the workpiece clamping hands are arranged on the lower side face of the sliding plate. The rotary air cylinder drives the rotary disc to conduct reciprocating circumferential rotation of a radian stroke, so that the driving rod drives the sliding plate and the workpiece clamping hand to conduct reciprocating motion of a linear stroke. Therefore, the pneumatic three-jaw material grabbing device is simple and compact in structure, the moving stroke range of the workpiece clamping hand is large, and workpieces with different outer diameters can be firmly grabbed.

The utility model relates to a rubber hose connector core tail lubricating device which comprises a frame body, an oil storage box is fixedly connected to the frame body, a sponge is placed in the oil storage box, a flow guide plate is fixedly connected to the outside of the oil storage box, an oil guide groove is formed in the flow guide plate, an oil outlet is formed in the side wall of the oil storage box, and an oil outlet is formed in the side wall of the oil storage box. The oil outlet is used for communicating the oil guide groove with the oil storage box, and an oil control assembly used for controlling the flow of lubricating oil is arranged at the oil outlet. By the adoption of the technical scheme, on the premise that the tail of the rubber hose connector core is effectively lubricated during use, the smearing amount of lubricating oil is controlled, the phenomenon that the lubricating oil is accumulated in a threaded groove in the tail of the rubber hose connector core due to the large smearing amount is avoided, and use is facilitated.

The invention discloses a silicon dioxide aerogel powder mixing device and a using method thereof.The silicon dioxide aerogel powder mixing device comprises a stabilizing table, a collecting frame is installed at the upper end of the stabilizing table, a movable shaft is installed at the front end of the collecting frame, a closing cover is installed at one end of the movable shaft, and a hydraulic cylinder is installed at the other end of the collecting frame. Silicon dioxide aerogel powder needing to be mixed is poured into a stirring tank in the device through a feeding frame, and when the silicon dioxide aerogel powder passes through a gravity overturning plate installed in the feeding frame, the gravity overturning plate bears a certain weight and then is overturned to pour the silicon dioxide aerogel powder into the stirring tank; according to the stirring device for the silicon dioxide aerogel powder, the stirring rod is driven by the driving motor to rotate when the silicon dioxide aerogel powder enters the stirring tank, and during rotation, the waved plate mounted at the lower end of the stirring rod is used for raising and stirring the silicon dioxide aerogel powder accumulated at the bottom of the stirring tank more sufficiently, so that the material mixing operation is carried out.

The present invention relates to a short-process preparation method of a large-size high-strength and plastic TiZrNbAl series high-entropy alloy, and belongs to the field of alloy technology. First, a self-consumable TiZrNbAl series high-entropy alloy cylindrical ingot with a diameter R ≥ 90 mm is forged to obtain a square billet; the deformation amount and deformation rate in different temperature ranges are controlled, and a basket structure can be obtained after forging without heat treatment. The structural characteristics of the alloy are: the aspect ratio of the intracrystalline lath α2 phase is ≥ 4, the average width of the α2 phase is 0.5~2μm, the room temperature static tensile strength of the basket structure reaches 900~1000 MPa, the plasticity reaches 7~12%, and the room temperature dynamic compression plasticity is ≥35%.

This utility model discloses a water treatment device and a cleaning machine. The water treatment device includes a housing and a magnetization module and an ozone generating component encapsulated within the housing cavity. The housing also has an inlet pipe and an outlet pipe. The magnetization module is located on one side of the housing cavity, and the ozone generating component is located on the other side. The ozone generating component includes an encapsulation box and an ozone generating module, a gas-liquid mixer, an overflow component, and a one-way valve housed within the encapsulation box. The inlet pipe, magnetization module, gas-liquid mixer, and outlet pipe are connected sequentially. The ozone generating module is connected to the gas-liquid mixer via a pipe. The overflow component is located on the pipe between the ozone generating module and the gas-liquid mixer. The one-way valve is located at the outlet of the ozone generating module. This utility model significantly reduces the internal piping distribution of the housing, thus reducing the space required for the housing and adapting to the installation size requirements of household dishwashers.

The utility model relates to the technical field of communication cable take-up and pay-off, and discloses a communication cable take-up and pay-off device for communication engineering, which comprises a bottom plate, the left side of the bottom plate is provided with a handrail, the bottom of the bottom plate is rotatably connected with four universal wheels, and the top of the bottom plate is provided with an adjusting assembly. The adjusting assembly comprises a movable seat, a stud, an open sliding hole, a twisting cylinder, a rotating column, a worm gear, a gear motor, a worm, a brush cylinder, a connecting plate and a tension spring. According to the communication cable take-up and pay-off device for communication engineering, components such as the brush cylinder are concentrated on the outer surface of the movable seat, so that a user only needs to adjust the height of the movable seat in a lifting mode during adjustment, the cost for forming the communication cable take-up and pay-off device is greatly reduced, meanwhile, the design that a gear motor is matched with a worm gear and a worm to be meshed is utilized, and the communication cable take-up and pay-off efficiency is improved. A user can control the rotating speed of the twisting cylinder by controlling the rotating speed of the output shaft of the gear motor, and therefore the speed of cable winding and unwinding is controlled.

A compound of formula (I) or a pharmaceutically acceptable salt thereof is described, wherein the substituents are as defined herein. Also described are pharmaceutical compositions comprising the same and methods of using the same for treating medical conditions, including pain, skin disorders, respiratory tract disorders, fibrotic disorders, inner ear disorders, fever, or other body temperature regulation disorders. # imgabs0 #

Disclosed is a novel organic light emitting compound represented by Formula 1 having high current efficiency and low driving voltage (see disclosure), and an organic electroluminescent device comprising the same.

The present invention relates to a method for preparing black phosphorus nanomaterials by impact phase change with microstructure regulation, and belongs to the technical field of nanomaterial preparation process. The method firstly selects red phosphorus micron powder with a purity of more than 98.9% for pretreatment to obtain a nano red phosphorus precursor; then the preparation of gram-level nano black phosphorus powder is achieved in one step by an experimental method of impact phase change, thereby improving the yield and efficiency of nano black phosphorus; the nano black phosphorus powder is black phosphorus nanosheets, single-layer black phosphorene or few-layer black phosphorene. The method controls the reaction pressure by parameters such as explosive detonation velocity, precursor powder density, and flying sheet impact velocity, thereby achieving complete phase change, with a conversion rate of up to 100%, overcoming the defect that the incompletely reacted precursor and product are difficult to separate; the method has low raw material loss, simple process, high production efficiency, low production cost, and can be scaled up according to the similarity law, thereby achieving low-cost preparation of black phosphorus nanomaterials and simultaneously performing microstructure regulation.

The invention provides a control method and device of an energy storage power station, electronic equipment and a storage medium. The control method comprises the steps that a charging / discharging parameter set and battery parameters of a target energy storage power station are acquired; establishing a loss cost equation based on the battery parameters; performing iterative calculation on the charge / discharge parameter set to obtain candidate charge / discharge parameters, and determining loss cost; and obtaining candidate optimal elements output by each iteration, determining a target optimal element, and controlling the target energy storage power station based on the charging / discharging parameters corresponding to the target optimal element. The solution space of the operation state of the energy storage equipment of the target energy storage power station is explored through the advantages of the self-adaptive update position function, the relatively optimal operation state solution set is found in combination with the current update frequency, self-adaptive adjustment is carried out according to the environment change, the operation flexibility and adaptability of the target energy storage power station are improved, and the energy storage power station performance is improved. A reliable and real-time optimization control strategy is provided, the energy efficiency and the control precision of the target energy storage power station are improved, and the control cost is saved.

The application discloses a preparation method of an alumina aerogel heat insulation felt, and comprises the following steps: adding an aluminum source precursor into a ketone substance to form a precursor solution through sufficient dissolution; adding an alcohol solvent containing a silicon source precursor, an amine substance and a catalyst into the precursor solution to form an alumina sol through uniform stirring; adding a surfactant into the alumina sol to form an alumina sol containing a light shielding agent through uniform stirring; adding light shielding agent particles into the alumina sol to form the alumina sol containing the light shielding agent; immersing a ceramic fiber felt into the alumina sol containing the light shielding agent to perform gel aging, so as to obtain a fiber felt / gel composite; and performing drying and heat treatment on the fiber felt / gel composite, so as to obtain the alumina aerogel heat insulation felt. The alumina aerogel heat insulation felt prepared by the method has the advantages of high temperature resistance, excellent heat insulation performance and good flexibility.

The present application relates to pile foundation engineering technical field, especially to a kind of rectangular pile intelligent hole-forming equipment, comprising: main rack, the main rack includes: the cross section control support of rectangular frame structure and swing shaft across the both sides of cross section control support;The horizontal cross-sectional dimension of the cross section control support is matched with target pile hole size;Cutting drilling assembly, the cutting drilling assembly includes: power support and multiple groups of horizontal arrangement cutting drill bit group;The through hole is equipped on the power support, and the power support is set on the swing shaft by the through hole;Swing drive mechanism, the swing drive mechanism includes: swing cylinder and limit switch symmetrically arranged on the swing shaft, and the swing cylinder is used to drive the power support;The limit switch is used to control swing amplitude;Intelligent control system, the intelligent control system includes: torque sensing piece for sensing the torque of cutting drill bit group and controller.

The present invention relates to a photochemical synthesis method of a full-peptide nano-colloid. In this method, a double-terminal dityrosine sequence peptide containing aspartic acid D and aminocaproic acid X is used as a cross-linkable precursor, and a mixed solution of a precursor, a photosensitizer, and an oxidant is photochemically synthesized in water. The precursor can be designed from scratch with the help of a peptide database, and standardized solid-phase synthesis can be achieved. The primary structure of the polypeptide chain segment can be transformed into a higher-level structure of a functional colloid within a few minutes by irradiation with a high-intensity photoreactor. The morphology and particle size of the colloid can be regulated by the concentration of the precursor and the pH environment, the degree of cross-linking and the speed of the synthetic reaction can be regulated by the intensity of illumination and the ratio of photosensitizer / oxidant, and the space occupancy, amphiphilicity, water solubility, charge distribution, and encapsulation characteristics of the colloid can be regulated by designing a hydrophilic / hydrophobic / ionic repeating peptide sequence. The nano-colloid is based on a complete peptide unit structure, has excellent biocompatibility, can encapsulate molecules and ions to construct nano-probes, and realizes biomedical applications such as fluorescence imaging and magnetic resonance imaging.

The present invention discloses a thoracic and abdominal drainage device for thoracic and cardiovascular surgery, belonging to the technical field of medical devices. The thoracic and abdominal drainage device for thoracic and cardiovascular surgery comprises a working box, one side of the working box is fixedly connected with a drainage tube 1, the lower end of the working box is connected with a rotating disk, the end of the rotating disk away from the working box is connected with a lifting frame, the end of the lifting frame away from the rotating disk is connected with a drainage bag, a pressing block is arranged, a connecting block 1 is arranged on the outer side of the pressing block, and a trigger block 2 is arranged at the lower end of the connecting block, so as to control the time of the pressing block moving upward, and at the same time, the time of the pressing block moving downward can be controlled by the trigger block 1, so that the pressing block can continuously move up and down within a given range, and then the moving speed of the pressing block is controlled, so as to achieve the control of the force and rate of the airbag pressing, so that the device can meet the needs of more patients.