117 results about "Micropump" patented technology

A method is disclosed of fabricating a MEMS device that includes one or more wafers configured as pump or valve. The pump or valve includes an inlet port to receive fluid and an outlet port to release the fluid within the pump or valve. The method comprises growing silicon dioxide on a silicon layer of the one or more wafers to form a silicon dioxide layer on the silicon layer, depositing silicon nitride on the silicon dioxide layer of the one or more wafers to form a silicon nitride layer on the silicon dioxide layer, spinning a front side to create a pattern thereon defining an area for the pump or valve, dry etching the one or more wafers at the area for the pump or valve to remove the silicon dioxide and silicon nitride layers to define an opening for the pump or valve.

The utility model discloses a kind of general carriers suitable for a variety of special-shaped PCB mounting, belong to PCB mounting carrier technical field, including shell, the inside fixed connection of shell has carrier plate, by the carrier plate in shell forms storage space, phase-change medium is placed in the storage space;Through the solid-liquid phase change characteristic of phase-change medium, temperature control is carried out with heating coil, can make supporting component with PCB shape dynamic adjustment deployment position and height, after melting, phase-change medium allows supporting component free displacement, after cooling solidification forms stable support structure, can perfectly adapt to different curvature, concave-convex structure special-shaped PCB, solve the problem that magnetic attraction is not stable, easily affect production, the control mechanism set with heating and cooling two modes, phase-change medium can be quickly melted by heating coil, then cooling water circulation is driven by miniature pump body, can be quickly completed medium solidification, simple and convenient to use, and adjustment speed is fast.

A magnetic fluid micropump includes an annular flow channel, a fixed magnetic assembly and a driving magnetic assembly. A magnetic fluid is provided inside the annular flow channel. The fixed magnetic assembly is arranged outside the annular flow channel in a stationary manner so that a part of the magnetic fluid is attracted and fixated in the annular flow channel to form a magnetic fluid valve. An inlet tube and an outlet tube that are in communication with the annular flow channel are respectively provided on both sides of the fixed magnetic assembly along a path of the annular flow channel. The driving magnetic assembly is arranged outside the annular flow channel and configured to move along the path of the annular flow channel, so that another part of the magnetic fluid moves along the annular flow channel to form a magnetic fluid piston.

The invention discloses a multi-cavity micro-fluidic chip level instant-preparation infusion device, and belongs to the technical field of medical infusion. The micro-fluidic chip comprises a micro-fluidic chip main body, a driving assembly, a temperature control assembly and a connecting assembly, a cover plate of the micro-fluidic chip main body is hermetically attached to a chip substrate, the chip substrate is provided with independent liquid storage chambers, a micro-mixing flow channel and a liquid outlet chamber, each liquid storage chamber is communicated with the micro-mixing flow channel through the micro-flow channel, and the top of each liquid storage chamber is provided with a liquid inlet interface and a sealing plug; a micropump of the driving assembly provides driving force for the liquid storage chamber, and the control module regulates and controls the micropump and the control valve; a heating piece of the temperature control assembly is attached to the top of the chip substrate, and a temperature sensor is embedded into the chip substrate and is close to the liquid storage chamber; a liquid outlet connector of the connecting assembly is arranged on the cover plate, communicated with the liquid outlet cavity and used for being in butt joint with an external liquid conveying pipeline. Accurate proportioning, instant mixing and sterile infusion of multi-component medicine are achieved, and the infusion device is small in size, easy and convenient to operate and suitable for clinical first aid, precise medical treatment and other scenes.

The embodiment of the invention discloses a temperature control device and electronic equipment, and belongs to the technical field of temperature control. The temperature control device is used for controlling the temperature of electronic equipment with a first heat source area and a second heat source area. The temperature control device comprises a control module, a temperature detection module, a refrigeration sheet, a first micropump and a first flow channel, the first micropump is arranged on the first flow channel, the first flow channel extends to pass through the first heat source area and / or the second heat source area, and the first flow channel extends to pass through the refrigeration sheet; the temperature detection module is electrically connected with the control module and used for detecting the first temperature of the first heat source area and / or the second temperature of the second heat source area. The control module is electrically connected with the first micropump and the refrigeration sheet and used for controlling the working states of the first micropump and the refrigeration sheet according to at least one of the working mode of the equipment, the first temperature and the second temperature. According to the embodiment of the invention, the temperature control effect of the electronic equipment can be improved.

The application discloses a piezoelectric micro-pump with double piezoelectric driving gas wheel type valve and a pumping method. The piezoelectric micro-pump comprises a pump body shell, a sandwich piezoelectric vibrator and two gas wheel type valves. The sandwich piezoelectric vibrator is fixed in the pump flow chamber of the pump body shell, and the pump flow chamber is divided into an air inlet cavity and an air outlet cavity. The pump body shell is provided with a series flow channel structure communicating the air inlet cavity and the air outlet cavity. The gas wheel type valve comprises a blocking layer, a diaphragm layer, a movable layer and a flow layer which are sequentially stacked along the air passing direction. A first flow hole is formed in the flow structure of the middle part of the flow layer; and a response hole is formed in the limiting structure of the middle part of the blocking layer. The application forms a rapid pressure feedback path through the response hole, realizes the rapid closing response of the valve piece, and makes the wheel type valve meet the response speed requirement of the gas pump. Meanwhile, the double piezoelectric driving elements in the sandwich piezoelectric vibrator help to improve the amplitude and reduce the input voltage.

The application relates to a sweat collection microfluidic patch based on a micropump and a preparation method thereof, the sweat collection microfluidic patch comprising a micropump, a sweat absorption layer, a sweat microfluidic layer and a sealing layer, the sweat absorption layer, the sweat microfluidic layer and the sealing layer being stacked in sequence from bottom to top; wherein the sweat absorption layer is provided with a liquid inlet, the sweat microfluidic layer is provided with a liquid inlet area, the micropump transports sweat from the liquid inlet of the sweat absorption layer to the liquid inlet area of the sweat microfluidic layer; a plurality of collection areas are further arranged on the sweat microfluidic layer, the collection areas are connected through gradient burst valves, and one of the plurality of collection areas is connected with the liquid inlet area. The microfluidic module combined with the micropump can provide long-time time-series collection of sweat by using the programmable and accurate and stable active suction of the micropump.

The invention discloses a piezoelectric micropump and electronic equipment. The piezoelectric micropump comprises a shell, a driving assembly, an adapter and a follow-up diaphragm, wherein the shell is provided with a containing cavity communicated with the outside; the driving assembly is arranged in the accommodating cavity, and the driving assembly can vibrate in a power-on state; the adapter comprises a first adapter part and a second adapter part, and the first adapter part is elastically connected with the second adapter part; the first switching part is connected with the driving assembly, and the second switching part is connected with the shell; the follow-up diaphragm is arranged in the containing cavity, the follow-up diaphragm is connected with the driving assembly, a pump cavity is defined between the follow-up diaphragm and the driving assembly, and the follow-up diaphragm is provided with a jet hole communicating with the pump cavity and the containing cavity; the follow-up diaphragm can vibrate along with the driving assembly so that fluid from the outside can be conveyed into the pump cavity through the jet flow hole, and airflow can be conveyed to the outside from the pump cavity through the jet flow hole.

The invention provides a battery thermal management method based on microfluidics and a battery, the battery comprises a battery main body and an embedded flow channel structure, and a battery management system comprises a controller, temperature sensors arranged at a plurality of first preset positions of the battery main body and micropumps arranged at a plurality of second preset positions in the flow channel structure, the method comprises the steps that a controller obtains battery cell collection temperature values, uploaded by a temperature sensor, of all first preset positions; the controller determines a thermal load result based on the acquired battery core acquisition temperature value of each first preset position and the acquired current value and the acquired voltage value of the battery; the controller sends a flow adjusting instruction to the target micropump based on the thermal load result so as to control the cooling liquid to be quantitatively and directionally transmitted in the flow channel structure, and the temperature of the battery is reduced to the target temperature. And different battery areas are independently adjusted through a micro-fluidic cooling structure embedded in the battery, so that accurate heat management of distribution according to needs is realized.

The invention discloses a heat exchange module and electronic equipment, and relates to the technical field of heat exchange.The heat exchange module comprises a shell, a working medium and a micropump, a flow channel is formed in the shell, the visible light transmittance of at least part of the area of the shell is larger than or equal to a threshold value, the flow channel is filled with the working medium, and the working medium comprises a first medium and a second medium; a liquid-liquid interface exists between the first medium and the second medium, the first medium comprises a main solvent and a surfactant, a defoaming agent and a thermochromic medium which are dissolved or dispersed in the main solvent, the mass fraction of the first medium in the working medium is 80%-90%, and the micropump is arranged in the shell, communicates with the flow channel and is used for driving the working medium in the flow channel to flow. Therefore, the liquid-liquid interface moves relative to the flow channel. The heat exchange module has the good heat dissipation performance, the working medium has the diversified flow visualization effect, and the display effect and the science and technology feeling of a product can be improved.

The utility model discloses a peristaltic pump, which belongs to the technical field of microfluid accurate transportation, aims to solve the problems of low precision and flow pulse of the existing mechanical peristaltic micropump, and comprises a micro-fluidic chip, a clamp component and a driving mechanism, wherein the clamp assembly and the driving mechanism are both connected with the shell, and the micro-fluidic chip is fixed on the outer side of the driving mechanism through the clamp assembly; a flow channel is arranged on one side, wound on the driving mechanism, of the micro-fluidic chip, and the driving mechanism is in fluctuating contact with the flow channel during pumping and is used for extruding fluid in the flow channel in a fluctuating manner; an air cavity is formed in the tail end of the flow channel, microfluid can be stored and released in real time, and pulse fluctuation of the fluid is compensated. According to the utility model, flow fluctuation real-time compensation can be carried out on fluid in the flow channel, the flow pulse error of peristaltic fluid is effectively reduced, the device has the advantages of no pulse, high precision, continuous pumping of microfluid and the like, and stable driving and control of the microfluid are met.

The present application relates to deep-sea pressure maintaining sampling technical field, disclose a kind of whole sea depth macroorganism active pressure maintaining sampling system and method, system includes sampling cylinder main body structure and active pressure compensation structure;Active pressure compensation structure includes: drive mechanism, reciprocating booster unit includes double-acting booster cylinder, variable diameter piston is arranged in booster cylinder, the diameter of high-pressure end of variable diameter piston is less than the diameter of low-pressure end, the inside of cylinder is divided into high-pressure chamber, low-pressure chamber and liquid exchange chamber, low-pressure chamber is communicated with sampling cylinder main body structure by a high-pressure water injection path, high-pressure chamber is also communicated with the outlet of liquid injection micropump by a water supplement pipeline, each control port of hydraulic control reversing valve is communicated with the outlet of liquid injection micropump, low-pressure chamber, liquid exchange chamber and high-pressure chamber by hydraulic pipeline one-to-one correspondence, compensator is communicated with the oil inlet of liquid injection micropump, liquid exchange chamber and the oil return port of hydraulic control reversing valve, realize single power source, infinite stroke's continuous, accurate pressure compensation, especially suitable for whole sea depth, large capacity macroorganism pressure maintaining sampling.

The utility model discloses a liquid cooling radiator and an electronic device comprising the liquid cooling radiator, the liquid cooling radiator comprises at least one liquid cooling plate, at least one micropump and a vapor chamber, and the vapor chamber is connected with each liquid cooling plate, so that one side of each liquid cooling plate and one side of the vapor chamber are coplanar and respectively form a fluid channel; each micropump is provided with a water inlet and a water outlet, each fluid channel is correspondingly connected with one micropump, a first interface end of each fluid channel is communicated with the water inlet of the corresponding micropump, and a second interface end of each fluid channel is communicated with the water outlet of the corresponding micropump. A fluid channel capable of containing a liquid cooling working medium is formed through connection of a temperature uniforming plate and a liquid cooling plate, the liquid cooling working medium in the fluid channel circularly flows through driving of a micropump, and the circularly flowing liquid cooling working medium is in direct contact with the temperature uniforming plate, so that the liquid cooling working medium is not prone to falling off. Therefore, the heat conduction path of the vapor chamber-liquid cooling working medium-liquid cooling plate can fully take away heat, and efficient heat dissipation of the electronic equipment is realized.

Operating fluid flows in a gas circulating subsystem that comprises a room temperature part (211), an inbound line (203), and an outbound line (204) Respective cryogenically cooled sections of said inbound line (203) and said outbound line (204) are cooled below 100 K. Operating fluid is fed in an inbound direction from the room temperature part (211) towards a cold part (201, 2102, 2103) of a cold source. Operating fluid is also drawn in an outbound direction from a cold part (202, 2102, 2103) of the cold source towards said room temperature part (211). One or more mechanical micropumps (401, 503, 1001, 1002, 1601, 1602, 1802, 1902, 1903) are used in the respective cryogenically cooled section of the inbound line (203) and / or the outbound line (204) to affect the flow of operating fluid in the inbound and / or outbound direction, respectively.

The utility model provides a micropump structure which comprises a middle layer, one side of the middle layer is provided with a pump cavity, the other side of the middle layer is provided with a pump membrane and a liquid outlet flow channel, the pump cavity is communicated with the liquid outlet flow channel through a through hole, the middle layer is provided with an inlet valve and an outlet valve, the inlet end of the inlet valve penetrates through the surface of the other side of the middle layer, and the outlet end of the outlet valve penetrates through the surface of the other side of the middle layer. The outlet end of the inlet valve is communicated with the pump cavity, the inlet end of the outlet valve is communicated with the liquid outlet flow channel, the outlet end of the outlet valve penetrates through the surface of one side of the middle layer, and the pump membrane reciprocates through the driver; the first sealing layer is installed on one side of the middle layer, an output channel is formed in the first sealing layer, and the output channel is used for being communicated with the outlet end of the outlet valve; and the second sealing layer is installed on the other side of the middle layer, and an input channel is formed in the second sealing layer and used for being communicated with the inlet end of the inlet valve. According to the scheme, the size of the micropump can be obviously reduced, and the production cost is reduced.

This invention discloses an ultra-clean electromagnetic piezoelectric micropump, comprising: an electromagnetic component, a pump body, a pump cover, an elastic component, and a valve core magnet. The pump body is a cylindrical body with stepped through holes inside, divided into three sections axially. The wall surface of the second section of the pump body contains piezoelectric material, and several piezoelectric cavities with piezoelectric material on their walls are arranged in its internal cavity. The walls of the pump body and the piezoelectric cavities are respectively connected to an external power source. The first and third sections of the pump body are tightly fitted with two pump covers, forming an inlet flow channel and an outlet flow channel inside the pump body. An elastic component is installed in both the inlet and outlet flow channels, and a valve core magnet is fixed to the elastic component. The projected area of ​​the valve core magnet is larger than the cross-section of the flow channel in the second section of the pump body. An electromagnetic component is installed on the outer wall of the pump body to control the movement of the valve core magnet, thereby controlling the opening and closing of the inlet and outlet flow channels. This invention can achieve non-backflow bidirectional flow without changing the installation position, and has high output flow accuracy.

The invention relates to the technical field of high-speed micro pumps, and discloses a high-speed micro centrifugal pump impeller profile pre-compensation method based on fluid-solid coupling analysis, which comprises the following steps: constructing an impeller parameterized geometric model and extracting design variables; an optimized Latin hypercube sampling strategy is adopted to construct a fluid-solid coupling sample library, and an intrinsic orthogonal decomposition technology is combined with Gaussian process regression to establish a high-precision full-field deformation prediction model; establishing a multi-objective optimization function based on a full-field deformation prediction model, and performing optimization by using a non-dominated sorting genetic algorithm to obtain a target thermal state geometry considering both hydraulic performance and structural safety; and finally, carrying out reverse iteration solution on the target thermal-state geometry by utilizing a geometry-load mixed correction algorithm to obtain the cold-state manufacturing geometry in a static state. According to the method, the calculation cost is remarkably reduced through the agent model, the adverse effect of fluid-structure interaction deformation on the impeller performance is eliminated from the manufacturing end through the reverse pre-compensation strategy, and the actual operation efficiency and lift stability of the high-speed micro centrifugal pump are effectively improved.

The utility model relates to the technical field of water heaters, and provides a micro-nano bubble generating assembly and a water heater, the micro-nano bubble generating assembly comprises a three-way valve, an output pipe, a dissolved air tank, an input pipe and a micro pump. According to the micro-nano bubble generating assembly provided by the utility model, the three-way valve with the first interface, the second interface and the third interface and the dissolved air tank with the water inlet, the air inlet, the first water outlet and the second water outlet are arranged; the first connector is communicated with the water outlet pipe, the output pipe is communicated with the second connector and a user, the first water outlet is communicated with the output pipe, the air inlet is communicated with air, the input pipe is communicated with the third connector and the water inlet, the input end is connected with the second water outlet, the output end is connected with the first end of the output pipe, and the first water outlet and the second water outlet are arranged in parallel; the bubble water flows out from the micro pump and also flows out from the first water outlet, water inlet of the input pipe does not need to be cut off during air filling, the situation that the waterway flow is greatly reduced, and the use and experience of a user are affected is avoided, the cost can be saved, and large noise is avoided.

The utility model provides a kind of high-precision fluorine anticaries filling machine, including rack, be equipped with filling assembly on the rack, the filling assembly includes feed hose and first micro pump, the first micro pump fixedly connected rack, the rack one side is equipped with guide rail, the guide rail is slidably connected with moving assembly, the moving assembly top is equipped with storage bin, the storage bin top is equipped with multiple pressure regulating components, the pressure regulating component includes second micro pump and flow guide hose, the moving assembly bottom is equipped with multiple canning spray head, the first micro pump and canning spray head are communicated by feed hose, one end of the feed hose is hermetically connected with the first micro pump, the other end of the feed hose is hermetically connected with canning spray head, the second micro pump and canning spray head are communicated by pressure regulating pipe, the problem that fluorine anticaries solution rebound after filling machine fills each time leads to each time the amount of loading is different, difficult to control the amount of canning is solved by designing two function different pressure valves.

The invention discloses an intelligent bone cement injection system of a bionic hollow screw and a control method. An intelligent bone cement injection system of a bionic hollow screw comprises an intelligent profiling interface, a multi-channel independent injection and sensing module, a piezoelectric ceramic micropump, a central control module and a three-dimensional navigation verification module. Loading three-dimensional micropore topological data through a scanning screw, and constructing a personalized perfusion model; and dynamically distributing multi-channel flow based on the model. According to the intelligent bone cement injection system of the bionic hollow screw and the control method, the problems that in the prior art, bone cement injection equipment is not matched with a novel 3D printing screw interface, the injection process is uncontrollable, and directional strategies and real-time feedback are lacked are solved, accurate, uniform and safe filling of bone cement in a complex micropore network is achieved, and the bone cement injection efficiency is improved. The stability, the safety and the predictability of the internal fixation operation of the osteoporotic fracture are obviously improved.

The invention relates to the technical field of food safety detection, in particular to a food trace element and animal residue integrated detection assembly and method combined with an enzymatic reaction, and the assembly comprises a sample storage module which pumps liquid through a micro pump; the enzymatic reaction module comprises a substrate and a pair of mutually independent reaction units, the substrate is communicated and connected with the sample storage module through a pipeline, and the substrate is also communicated and connected with the pair of reaction units; wherein the two reaction units comprise a first immobilization enzyme aiming at heavy metal ions, a first reaction system for developing an enzyme reaction substrate, a second immobilization enzyme aiming at veterinary drug residues and a second reaction system for developing the enzyme reaction substrate. The first reaction unit aiming at heavy metal ions and the second reaction unit aiming at veterinary drug residues are integrated on the liquid outlet side of the same microfluidic substrate, one-time sample adding and synchronous distribution of the liquid to be detected are achieved through the microfluidic channel network, high integration and synchronization of the detection process are achieved, and the detection efficiency is improved.

The application relates to the technical field of sensors, and provides a flexible fluid sensing system based on inkjet printing and a preparation method thereof. The sensing system comprises a flexible substrate, an energy collection antenna, an energy management unit, a microfluidic sensor, a micropump and a signal modulation unit arranged on the flexible substrate. The energy collection antenna and the energy management unit are arranged, the system can autonomously collect radio frequency energy from the environment and convert the radio frequency energy into electric energy to supply power to the whole system, the collected dispersed energy can be stored, and instantaneous high-power output can be provided when needed, so that the system is free from the dependence on traditional batteries or external power sources.

The utility model relates to intelligent closestool manufacturing technical field discloses a kind of foaming device of intelligent closestool, including L-shaped casing, the top surface of L-shaped casing is fixedly connected with annular support, annular support is embedded with miniature pump inside, suction tube is inserted with the liquid suction end of miniature pump, and the liquid outlet end of miniature pump is inserted with delivery pipe, one end of delivery pipe is inserted with foaming assembly, and the outlet of foaming assembly is inserted with foam spray pipe, the bottom of L-shaped casing is threadedly connected with liquid storage bottle.The utility model can form "foam shield" in closestool inner wall by foam spray pipe, block the sewage splashed by excrement falling, guarantee user clean comfort, can also adsorb peculiar smell and reduce diffusion;Foaming assembly realizes gas-liquid mixing by venturi tube and air valve, and bubble is refined by annular foaming plate, so that foam is dense, and use effect is improved.

The invention relates to a CPO module regulation and control method and device, a CPO module, electronic equipment, a readable storage medium and a program product. The method comprises the following steps: acquiring temperature monitoring data of a chip in a CPO module and working state data of the CPO module; the working state data comprises the current power consumption data of the CPO module and the working flow of a piezoelectric micropump of the microfluid cooling system; acquiring temperature prediction data of the chip in a future time period according to the temperature monitoring data and the current power consumption data; according to the temperature prediction data, simulating a heat dissipation result of a chip of the piezoelectric micropump under at least one candidate flow parameter, and determining a target flow parameter from the at least one candidate flow parameter; a heat dissipation result corresponding to the target flow parameter meets a preset heat dissipation requirement; and adjusting the working flow of the piezoelectric micropump according to the target flow parameter. By adopting the method, the reliability of the CPO module can be improved.

The embodiment of the invention discloses a heat exchange module and electronic equipment, the heat exchange module comprises a circuit board, a cover plate and a micropump, the circuit board comprises a substrate layer and a functional layer, the functional layer is arranged on the substrate layer, and a first flow channel groove is formed in the side, away from the functional layer, of the substrate layer; the cover plate is connected with the substrate layer in a sealing manner, so that the cover plate and the substrate layer define a flow channel at the first flow channel groove; the micropump is connected with the substrate layer in a sealed mode, and the micropump is used for driving a working medium to flow in the flow channel. Therefore, a flow channel can be formed in the circuit board, and the working medium in the flow channel is driven by the micropump to flow so as to realize heat exchange. The flow channels are directly designed in the circuit board, a heat exchange plate does not need to be additionally designed, the production cost can also be reduced, and the assembly difficulty of the electronic equipment applying the heat exchange module is also reduced.

A MEMS piezoelectric micropump and its fabrication method are disclosed. The MEMS piezoelectric micropump includes a substrate; a plurality of first liquid storage cavities located within the substrate; a first piezoelectric driving unit located on a first surface of the substrate and covering the plurality of first liquid storage cavities, the first piezoelectric driving unit being used to drive unidirectional flow of fluid within the plurality of first liquid storage cavities; a plurality of second liquid storage cavities located within the substrate, the first liquid storage cavities and the second liquid storage cavities being arranged alternately, and adjacent first liquid storage cavities and second liquid storage cavities being connected in series through a first conical through-hole or a second conical through-hole; and a second piezoelectric driving unit located on a second surface of the substrate and covering the second liquid storage cavities, being used to drive unidirectional flow of fluid within the plurality of second liquid storage cavities. This invention improves the stability and fluid delivery accuracy of the MEMS micropump by forming a valveless microchannel with unidirectional flow through the series connection of the first liquid storage cavities and the second liquid storage cavities.

The present application relates to the technical field of inductive metering, and discloses an automatic inductive metering disinfectant dispensing system and method, which realizes dynamic induction and posture recognition of user hand actions through infrared sensing, image recognition and micro-pump control, can intelligently judge the liquid level and target liquid outlet nozzle according to the user's palm area and position, realizes personalized and quantitative liquid outlet operation, and avoids disinfectant waste. Further, the flow monitoring further guarantees the liquid outlet precision, and the display unit displays the remaining amount and / or the validity period in real time, improving the user's convenience and the disinfectant equipment maintainability. In addition, the multiple disinfectant equipment of the target area are centrally managed and data analyzed, the liquid supplementing time is predicted, and the disinfectant resource allocation efficiency of the whole area is improved.

The utility model discloses a reusable hydraulic infusion pump, which belongs to the technical field of hydraulic infusion pumps and comprises a liquid storage device, driving liquid is filled in the liquid storage device, one end of the liquid storage device is a liquid outlet, and the other end of the liquid storage device is a liquid inlet. One end of the volume micropump is used for leading in the driving liquid, and the other end of the volume micropump is used for leading out the driving liquid; a moving piston is arranged in the medicine storage device, and the interior of the medicine storage device is divided into an upper layer cavity and a lower layer cavity by the moving piston; and the exhaust part is located in the lower-layer cavity, and gas in the volume micropump and gas in the lower-layer cavity are exhausted in the flowing process of the driving liquid. According to the hydraulic infusion pump, recycling of the driving liquid is achieved, the driving liquid can be reused, the use cost of a user is reduced, the hydraulic infusion pump has the exhaust function, redundant gas in the volume micropump and the liquid cavity of the medicine storage device can be exhausted, and the pumping precision of the hydraulic infusion pump is improved.

The application discloses an odor control system and method for a toilet, belonging to the technical field of sanitary wares. The system comprises three core modules: a negative pressure capture unit, a gas transmission path, and a negative pressure generating device. The gas transmission path adopts a dual-path compatible architecture: one is an isolation section bypassing the water seal (integrated in the double-channel flange plate), and the other is a hydrophobic capillary tube (inner diameter 0.5-2.0 mm, preferably 0.8-1.5 mm, contact angle ≥110°) passing through the water seal. The negative pressure generating device supports three types of brushless DC centrifugal fans, piezoelectric micropumps, or Venturi ejectors, with the maximum working negative pressure strictly limited to ≤50 Pa, which is much lower than the national standard water seal static breaking threshold of 490 Pa, forming a safety redundancy coefficient of ≥9.8 times. The method includes source negative pressure capture, dual-path safe discharge, quantitative negative pressure driving, and intelligent control (pre-pumping for sitting, delayed shutdown, VOC speed regulation, water seal self-checking, and capillary tube backflush self-cleaning). The application realizes zero leakage of odor sources, zero disturbance of water seals, low noise, low cost, and full-scene compatibility, with an incremental cost of a new toilet of ≤40 yuan and a cost of a stock retrofit kit of ≤65 yuan, which has great industrialization promotion value.

Disclosed in the present invention is a robot-assisted subretinal injection system, comprising a base, wherein a controller is mounted on the base; one side of the base is connected to a robotic arm by means of a rotating assembly to make the robotic arm rotate horizontally; an angle adjustment seat is rotationally connected to an end of the robotic arm; an injection platform is movably connected to the angle adjustment seat; a clamp capable of sliding along the injection platform is provided on the front side of the injection platform; a driving assembly is provided in the clamp, and is configured to push a syringe out of the front end of the clamp or retract same into the clamp; a thrust linear motor is further provided on the front side of the injection platform; a pressing plate configured to be connected to the tail end of a plunger on the syringe is mounted on a spindle of the thrust linear motor; and an injection micropump is provided on the base, and is connected to the syringe by means of tubing. The present invention can solve the problem of potential safety hazards caused by a needle tip of the syringe being exposed to the outside during the movement of existing ocular subretinal injection devices.