44 results about "Micro valve" patented technology

The invention discloses a BUB bubble conveying system for a semiconductor production process and a control method, and belongs to the technical field of bubble conveying control, and the method specifically comprises the steps: in a fluid conveying pipeline of the semiconductor production process, generating a bubble group through a bubble generator, and adjusting the bubble generation frequency and volume distribution based on a liquid impedance feedback signal, the flow velocity, pressure and bubble distribution parameters of process liquid are collected, a pre-trained flow field prediction model is used for analyzing the bubble gathering trend, when the transmission retardation risk is detected, the opening degree of a micro valve is automatically adjusted, a bubble path is shunted, and a micro-pulse air pressure signal is applied to the throttling section of the semiconductor production process fluid conveying pipeline. Dynamically matching the bubble rupture phase with the fluid viscosity, and switching to a reverse bubbling mode to perform self-cleaning on the pipeline when detecting that the bubble residue exceeds a threshold value; linkage regulation and control of the multi-node micro valve are achieved, and the uniformity, repeatability and safety of fluid conveying can be kept in long-term operation.

The invention relates to a Raman activated cell sorting system coupled with micro-fluidic and Raman optical tweezers and a method thereof, and relates to the technical field of cell sorting, the system comprises a micro-fluidic chip with low Raman and fluorescence background noise and a pneumatic micro-valve; in the micro-fluidic chip, a sample channel and a micro-cavity are connected with a main channel, and a flow guide channel is connected with the micro-cavity; the flow guide channel and the collecting channel are connected through a pneumatic micro valve. After the pneumatic micro valve is closed, the fluid in the micro cavity is static, and a narrow sample flow is formed in the main channel. And when the Raman collection time is less than the time difference of two adjacent cells flowing through the capturing point of the optical tweezers in the narrow sample flow, high-flux Raman detection can be performed in the narrow sample flow. On the contrary, the target cells can be moved out of the narrow sample flow, and high-precision Raman detection in a long Raman collection scene can be realized. After sorting is completed, fluid flowing of the main channel is stopped, the pneumatic micro valve is opened, the cells stored in the micro cavity are released and collected in a unified mode, the cell suspension volume is more stable and uniform, and follow-up experiment operation is facilitated.

The invention provides a concrete cooling water pipe dynamic flow regulation method and device based on reinforcement learning, and relates to the technical field of concrete cooling water pipe dynamic flow regulation. The method comprises the following steps: reconstructing a three-dimensional temperature field based on Kriging, fusing the three-dimensional temperature field with material and environmental parameters into a state vector, inputting a near-end strategy optimized reinforcement learning model, outputting each valve opening vector by a strategy network, evaluating a state value by a value network, and performing physical constraint verification before issuing, an opening instruction realizes closed-loop flow distribution through coarse adjustment of the main valve and fine adjustment of the piezoelectric micro valve, meanwhile, flow attenuation and pressure difference are monitored in real time, and ultrasonic waves and mechanical scraper cleaning are automatically triggered to ensure long-term stable operation of the system.

A non-contact deposition system includes a jetting assembly including at least one microvalve. The microvalve includes an orifice plate defining an orifice therethrough. An actuation beam is disposed in spaced relation to the orifice plate. The actuation beam includes a base portion and a cantilever portion extending from the base portion toward the orifice and movable between a closed position and an open position. A seal structure including a sealing member is disposed at an overlap of the cantilever portion. A fluid manifold is coupled to the microvalve and defines a fluid reservoir containing a pressurized fluid. When the actuation beam is in the closed position, the cantilever portion is positioned such that the seal structure seals the orifice to close the microvalve, and in the open position, fluid is dispensed from the orifice toward a substrate and deposited thereon.

The invention discloses a symmetric backflushing structure, a micro-fluidic chip and application of the micro-fluidic chip, relates to the field of microfluidics, and can accurately capture and observe single sample particles and continuously and sequentially sort the single sample particles. The outlet end of the sample injection flow channel only allows a single sample particle to pass through; the maximum section width of the operation cavity symmetrical about the central axis of the operation cavity in the sample injection direction is greater than the section width of the outlet end of the sample injection runner; the operating cavity is communicated with the outlet end of the sample injection flow channel and the inlet end of the waste liquid flow channel, and the inlet end of the waste liquid flow channel and the outlet end of the sample injection flow channel are collinear and share the central axis with the operating cavity; the inlet ends of the pair of main separation runners are positioned on one side, close to the sample injection runner, of the operation cavity, are communicated with the operation cavity, incline towards the opposite direction of the sample injection direction and are symmetrical about the central axis; the outlet ends of the pair of main buffer runners are positioned on one side, close to the waste liquid runner, of the operation cavity, are communicated with the operation cavity, incline towards the sample injection direction and are symmetrical about the central axis; and the micro valve group controls the on-off of the sample injection flow channel, the waste liquid flow channel, the main separation flow channel and the main buffer flow channel.

1. The name of the design product: micro valve (YVQR113 series). 2. The use of the design product: for medium diversion or convergence. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: design 1 perspective view. 5. Design 1 is designated as the basic design.

The utility model discloses a microfluidic system for target object pairing, which comprises a first flow channel, a second flow channel, an oil liquid flow channel, a buffer liquid flow channel, a matching flow channel and a pairing micro valve, a first micro valve, a second micro valve and a buffer liquid micro valve are arranged, the matching flow channel is communicated to the oil liquid flow channel, and the first flow channel, the second flow channel and the buffer liquid flow channel are all communicated to the matching flow channel. The first flow channel comprises a first flow section different from the first micro-valve, the second flow channel comprises a second flow section different from the second micro-valve, and the upper side inner wall surfaces and the lower side inner wall surfaces of the first flow section and the second flow channel are parallel planes, so that the distance difference between different target objects and the upper side inner wall surfaces is reduced; therefore, the flow velocity difference caused by the distance difference is reduced, the stopping range of the target object is further reduced, the pressure of the buffer solution and the volume of the liquid can be correspondingly reduced, and the capturing success rate can be improved.

The application discloses an electrical control method of a UAV gas detector and relates to the electrical control field. The actual pressure difference is calculated by acquiring the pressure of the sample gas side and the zero gas side. The target pressure difference is set according to the safety threshold and the switching direction of the two-position three-way electromagnetic valve. The actual pressure difference is regulated by the zero branch micro valve filling and discharging zero gas. The zero gas flow and the regulation duration are calculated. The external safety belt Boolean quantity is defined according to the preset pressure difference. The valve coil current of the two-position three-way electromagnetic valve is controlled according to the external safety belt Boolean quantity. The transition zone state Boolean quantity is defined according to the valve coil current. Then, the transition zone duration is calculated. The transition zone equivalent orifice area is acquired. The worst backflow volume and the worst backflow volume are calculated. The micro spray volume is calculated. The safety coefficient is preset, and the hedging micro spray flow is started. If the micro spray volume is insufficient, the minimum cleaning volume is calculated. The zero branch micro valve is used for quantitative cleaning, so that the zero gas branch is pure, and the detection accuracy and stability of the UAV gas detector are improved.

The invention discloses a real-time fluorescent PCR instrument suitable for a micro-fluidic chip, and relates to the technical field of molecular diagnosis and biological detection. The conveying module conveys the chip to a station; the rotating module drives the chip to rotate; the pretreatment auxiliary module punctures a reagent bag of the chip and heats the chip; the amplification temperature control module is used for carrying out heating and cooling circulation on the PCR reaction cavity on the chip; the fluorescence detection module is used for collecting fluorescence signals in the chip PCR reaction cavity; the pressure valve module controls opening and closing of the thin film micro valve on the chip. According to the invention, centrifugal driving, mechanical valve control, semiconductor temperature control, multi-channel optical detection and other technologies are highly integrated in a compact instrument, the physical characteristics and operation requirements of a centrifugal micro-fluidic chip are perfectly matched, full-automatic operation from an original sample to a qPCR quantitative result is really realized, and the operation efficiency is greatly improved. The operation difficulty and personal errors are greatly reduced, the aerosol pollution risk is remarkably reduced, and the detection consistency and reliability are improved.

The invention discloses a liquid outlet mechanism and a surgical electrode. The liquid outlet mechanism comprises a plurality of liquid outlet assemblies, and each liquid outlet assembly comprises a liquid outlet pipe, a micro valve communicating with the outlet end of the liquid outlet pipe and a drainage channel communicating with the liquid outlet pipe. The liquid inlet dynamic pressure of the liquid outlet pipes is the same and the liquid outlet pipes are arranged around the reference axis. A plurality of blocking pieces are arranged on the inner wall of the liquid outlet pipe and are sequentially arranged in a crossed mode along the axis of the liquid outlet pipe. The liquid outlet pipe is configured to bend along with bending of the reference axis. The liquid outlet dynamic pressure of the liquid outlet pipe located on the outer side of the bend is larger than the liquid outlet dynamic pressure of the liquid outlet pipe located on the inner side of the bend. And the micro valve is configured to be opened after the hydrodynamic pressure reaches a set value. And the liquid blocked by the micro valve flows out from the drainage channel. Through the arrangement of the separation blade and the micro valve, when the end part of the operation electrode is bent, the cutting form of the operation electrode can be adjusted.

The inching valve comprises a valve seat and a valve body shell, a piston is installed in the valve body shell through a compression spring, the left end of the piston is connected with a piston rod extending out of the valve body shell, and an organ sealing plug assembly is arranged at the output end of the piston rod; the organ sealing plug assembly comprises a front end sealing plug, an organ structure connecting section and a rear end sealing gasket which are sequentially arranged from left to right, the organ sealing plug assembly is arranged in a matching cavity of the valve seat, and the rear end sealing gasket is assembled at the left end of the valve body shell; according to the inching valve, paint or a curing agent is thoroughly isolated from the piston rod and the valve body shell, damage to a sealing ring caused by particles and adhesion after the paint is cured is avoided, sealing of the piston rod is effectively protected, and the service life of the whole inching valve is prolonged.

A triboelectric self-sensing piezoelectric micro valve, comprising a housing (1), a piezoelectric vibrator (2) and a friction sensing unit (3). The housing (1) is provided with a liquid inlet (11) and a liquid outlet (12); the piezoelectric vibrator (2) and the friction sensing unit (3) are arranged in the housing (1); the piezoelectric vibrator (2) is arranged at the liquid inlet (11); the friction sensing unit (3) comprises a first power generation unit (31) and a second power generation unit (32) arranged opposingly; the first power generation unit (31) is fixedly connected to an inner wall of the housing (1); the second power generation unit (32) is fixedly connected to the piezoelectric vibrator (2); the piezoelectric vibrator (2) is used for driving the second power generation unit (32) to contact or move away from the first power generation unit (31); the piezoelectric vibrator (2) deforms under the action of a driving voltage to open the liquid inlet (11) and make the second power generation unit (32) contact the first power generation unit (31) so as to generate a first electrical signal; or the piezoelectric vibrator (2) deforms under the control of the driving voltage to close the liquid inlet (11) and make the second power generation unit (32) move away from the first power generation unit (31) so as to generate a second electrical signal. A flow monitoring method, applied to the triboelectric self-sensing piezoelectric micro valve. In this way, self-sensing flow monitoring can be realized, and by integrating the friction sensing unit and the piezoelectric vibrator, the space utilization rate is improved, thereby facilitating the miniaturization and integration of a device.

The invention discloses a liquid separation device for automatic library construction, which comprises a patch board, the upper surface of which is provided with a plurality of fluid interfaces communicated with an external injection pump or an air source through conduits; the temperature control structure comprises a low-temperature control area and a normal-temperature control area which are arranged in a mutual heat insulation manner The interface board comprises a laminated micro-fluidic structure of an upper-layer plate, a middle film and a lower-layer plate, the upper-layer plate is provided with a reagent injection port and an air valve interface, the middle film forms a micro-valve which can be controlled to be opened and closed under the action of air pressure, the lower-layer plate forms at least one metering micro-channel and a transmission micro-channel, and a quantitative volume of reagent is injected into the digital micro-fluidic chip through a liquid injection connector at the downstream. The device is compact in structure, reliable in sealing, high in modularization degree and suitable for gene sequencing library construction and related microfluidic automation application.

This relates to an injection assembly equipped with a microvalve used for industrial marking and coding. [Solution] The microvalve 164 comprises an orifice plate having a first surface, a second surface, and an orifice extending from the first surface to the second surface. The operating beam is positioned spaced apart from the orifice plate. The operating beam 176 comprises a base portion and a cantilever portion. The base portion is located a predetermined distance from the orifice plate. The cantilever portion extends from the base portion such that its overlapping portion overlaps with the orifice. The operating beam is movable between a closed position and an open position. The microvalve 164 also comprises a sealing structure comprising a sealing member positioned in the overlapping portion of the cantilever portion. When the operating beam 176 is in the closed position, the cantilever portion is positioned such that the sealing structure seals the orifice and closes the microvalve 164.

The application discloses a micro-fluidic chip with a reagent quantitative liquid taking unit and a control method. The micro-fluidic chip comprises a reagent quantitative liquid taking unit, which comprises a unit body, a reagent flow cavity and a reagent quantitative cavity are formed in the unit body, the reagent flow cavity and the reagent quantitative cavity are communicated through a flow channel, the reagent flow cavity is selectively communicated with a liquid supply pipe, and the volume of the fluid contained in the liquid supply pipe is greater than the volume of the reagent flow cavity. The application utilizes the difference between the volume of the fluid contained in the liquid supply pipe and the volume of the reagent flow cavity to realize simple and accurate quantitative control of the fluid volume required for sampling, and does not need a micro valve or a peristaltic pump to realize sampling quantification, so that the manufacturing cost of the micro-fluidic chip is greatly reduced, the structure is simple and easy to operate, and the application is especially suitable for application in a portable biochemical analysis device.

The invention relates to the field of clamping robots, in particular to a coffee dinner plate self-adaptive clamping robot based on magnetic attraction positioning. Comprising a central control assembly, and a monitoring structure is installed at the center of the bottom of the central control assembly; the first motor is started to drive the sliding shovel block to isolate the magnetic attraction state of the magnetic attraction block structure and the table top, so that the top of the sliding shovel block is attached to the bottom of the magnetic attraction block structure for isolation protection, and monitoring is conducted through the numerical value transmitted by the pressure sensor in the cavity in the subsequent placement process of the robot; the problems of rollover, deviation and the like are prevented, and the protection effect of the clamping robot is improved; according to the self-adaptive clamping robot, the clamping accuracy is determined through numerical values fed back by the two sets of distance sensors, after coffee is tasted, a dinner plate of the self-adaptive clamping robot has waste heat, the cold air in the condensation box can be sprayed out through the micro valve for primary cooling, and the working effect of the self-adaptive clamping robot is improved.

The invention discloses a novel micro sample injector for a gas chromatograph and a manufacturing method and a using method thereof.The novel micro sample injector comprises a first glass layer, an elastic film layer, a silicon etching layer and a second glass layer which are sequentially attached and connected from top to bottom, and the elastic film layer is connected to the surface, provided with an annular gas chamber, of the silicon etching layer; the elastic film layer is pushed by external air pressure to bend and deform towards the direction close to the silicon etching layer or reset towards the direction far away from the silicon etching layer so as to control the connection and disconnection of the two first air grooves in the same annular air chamber; a first micro valve is formed at the sample gas inlet; a second micro valve is formed at the sample gas outlet; a third micro valve is formed at the helium gas inlet; and a fourth micro valve is formed at the chromatographic column inlet. The micro sample injector adopts a four-layer structure of a glass layer, an elastic film, a silicon etching layer and a glass layer, so that the function of controlling the on-off of a gas path is realized; the four micro valves are designed to control gas inlet and outlet, the structure is simple, the problem of valve position switching asynchronism caused by gas path time sequence coordination is solved, and the sampling accuracy is improved.

The invention relates to the technical field of microbiological testing, in particular to a microbiological drug sensitivity test liquid path system which comprises a drug sensitivity test liquid path system body. The main runner is connected with the liquid inlet and is connected with a branch runner; each drug sensitivity test hole is connected with a blocking flow channel and is connected with the branch flow channel through the blocking flow channel; a micro valve is arranged between the liquid inlet and the main runner; the main flow channel comprises a first main flow channel for adapting to low-viscosity test liquid and a second main flow channel for adapting to high-viscosity test liquid; the micro valve can adjust the proportion of flow entering the first main flow channel and the second main flow channel. According to the invention, through the combination of differential flow channel design and dynamic flow regulation, the adaptability of a liquid path system to liquids with different viscosities and the flexibility of flow distribution are improved, the consistency and accuracy of liquid filling in each drug sensitivity test hole are ensured, and the precision, efficiency and application range of a microbial drug sensitivity test are improved.

The invention relates to the technical field of server cooling, and discloses a server heat dissipation system based on single-phase immersed liquid cooling, which is characterized in that a liquid pool is arranged in a liquid cooling cabinet, a partition adjustable jet assembly is mounted at the bottom of the liquid cooling cabinet, and the partition adjustable jet assembly is composed of a jet orifice plate and a micro-valve array to form a plurality of independent jet areas; the cooling distribution unit comprises a heat exchanger, a circulating main pump, a high-temperature side coupling energy recovery unit and an oil product state monitoring unit; a liquid return port of the liquid pool is provided with a self-cleaning filtering unit; and the control unit operates a model prediction control algorithm based on the kinematic viscosity data, the water content data and the particle concentration data in combination with the temperature signal, the flow signal and the pressure difference signal, predicts oil product viscosity drift in combination with a space-time Transformer model, and outputs the opening degree of a micro valve in each injection area, the rotating speed of a bypass micro pump and the sequential control quantity of back flushing. According to the invention, the balance of the cooling liquid flow field, the real-time compensation of the physical property of the oil product and the closed-loop linkage of self-cleaning are realized, and the energy efficiency of the system is improved.

The present application relates to the technical field of optical control, and especially relates to an optical element active thermal control system, two cooling plates are respectively arranged on two sides of the optical element; cooling medium flows in the cooling plates, is used for cooling the optical element, and the flowing direction of the cooling medium in the two cooling plates is opposite; a temperature sensor is used for measuring the measured temperature of the optical element; a piezoelectric micro valve is connected with the two cooling plates, and is used for controlling the flow of the cooling medium in the two cooling plates; a pressure sensor is arranged at two ends of the piezoelectric micro valve, and is used for sensing the pressure difference at the two ends of the piezoelectric micro valve; and a control unit controls the piezoelectric micro valve to adjust the flow of the cooling medium in the two cooling plates according to the measured temperature and the pressure difference. The present application adopts micro-channel reinforced heat transfer and symmetrical design, reduces the vibration interference of the cooling system, adopts the piezoelectric micro valve and the active control system, realizes the precise dynamic regulation and control of the cooling medium flow of the optical element, and thus significantly improves the working efficiency and the performance stability.

A gimballed cantilevered actuating beam for sealing micro-valves is disclosed. The micro-valve includes an orifice plate and an orifice extending through the orifice plate. An actuating beam is disposed in spaced relation to the orifice plate. The actuating beam comprises a base portion separated from the orifice plate by a predetermined distance and a cantilevered portion extending from the base portion towards the orifice. An overlapping portion of the actuating beam overlaps the orifice and is flexibly affixed to the remainder of the cantilevered portion by at least one rib, allowing the overlapping portion to gimbal. A sealing structure is disposed at the overlapping portion, which seals the orifice when the actuating beam is in the closed position.

1. The name of the design product: electric control micro-motion valve of gear box. 2. The use of the design product: the design product is used for electric control micro-motion valve of gear box. 3. The design points of the design product: in shape. 4. The picture or photo that can best show the design points: perspective view.

The invention relates to the technical field of oil and gas field exploration and development equipment, and discloses a single-gun-body in-situ rotary bullet-changing in-situ different-item perforator and an operation method thereof.The perforator comprises a shell, an annular cavity is formed in the shell, multiple pairs of through holes are oppositely formed in the two side walls of the annular cavity, and each pair of through holes are longitudinally formed; the two bullet supply parts are oppositely arranged on the shell, the rotary driving part is connected with the two bullet supply parts, and each bullet supply part is provided with a plurality of bullet storage bins corresponding to the second through holes, perforating bullets arranged in the bullet storage bins and a push-out part; the plurality of piezoelectric micro-valve modules are respectively arranged at the opposite through holes in the annular cavity and are used for controlling the opening degree of the valve; the control system is in signal connection with the rotary driving part, the plurality of push-out parts and the plurality of piezoelectric micro-valve modules; the perforator is simple in design and free of downhole fallen objects, double dynamic adjustment of variable energy and secondary phase can be achieved through a single tubular column, and the perforation efficiency and the reservoir transformation effect are remarkably improved.

The invention discloses an active isolation type reservoir depletion type development microfluidic simulation device and a recovery ratio quantitative calculation method, the device comprises a chip integrated with an active isolation micro valve and a double-branch outlet system, and the chip and the double-branch outlet system are used for establishing a physical isolation boundary and controlling rollback pressure reduction; the method comprises the following steps: selecting oil-soluble fluorescent particles, compounding single-phase gas-containing fluorescent crude oil according to a mine field production gas-oil ratio, closing a micro valve after a model is saturated so as to construct a constant-volume closed system, blocking a dead volume of a pipeline, simulating exhaustion by utilizing high-pressure pump rollback, and accurately calculating the recovery ratio based on a linear response relationship between a fluorescence intensity integral value and oil saturation. According to the invention, the interference of fluid backflow in a dead volume on fluid flow characteristics in a microfluidic model is eliminated, the problem of inaccurate measurement of the saturation degree of crude oil is overcome, and high-precision simulation of depletion type development under a real stratum condition is realized.

The invention relates to a multi-mode organ chip system integrating a pneumatic micro valve and a side-entry sensor. The multi-mode organ chip system comprises a lower-layer flow channel substrate layer, a porous film, an upper-layer flow channel layer, a valve control film layer and a pneumatic control layer which are sequentially stacked from bottom to top, the system comprises at least one group of multi-modal organ chip units, and each group of multi-modal organ chip units comprises a culture flow channel, a liquid inlet, a liquid outlet, a pneumatic control channel, a plurality of lateral insertion interfaces and a plurality of cell culture cavities. The invention further relates to a preparation method and application of the multi-mode organ chip system integrating the pneumatic micro valve and the side-entry sensing. A separation structure of a culture area and a detection area is constructed in the organ chip, on-demand communication / isolation of the culture area and the detection area is realized by utilizing a pneumatic micro valve, and meanwhile, a lateral insertion interface is formed in the side wall of the detection area, so that an external electrochemical sensor can be horizontally inserted and self-sealing is formed by virtue of an elastic material.

The application discloses an intelligent response type extra-high voltage power transmission line slope reinforcement and monitoring system and relates to the technical fields of geotechnical engineering and slope protection. A humidity response micro valve coating is composed of a microporous membrane and a weather-resistant membrane, and a hydrogel micro valve array is arranged in the inner layer. A hollow shape memory anchor rod is used as a shape memory prestressed anchoring unit, a spiral drainage micro channel is arranged in the cavity, and a strain sensing element is embedded in the cavity. An energy collection and control module collects energy by using electromagnetic induction of a power transmission line and slope surface friction or a piezoelectric device. A self-repairing sealing interface penetrating a membrane uses a coating containing microcapsules to seal the anchor rod penetrating point and the weld for a long time. A bionic vegetation module adopts a three-dimensional printed bionic root structure, is positioned with a steam exhaust area of the micro valve coating and is fastened with the anchor rod. The system can significantly inhibit rainwater infiltration in the rainy season, release water vapor under the membrane in the dry season and adjust the prestress by self-provided energy, so that the long-term stability and durability of the slope are significantly improved.

The invention relates to a three-dimensional stacked chip with a closed-loop layered microfluid temperature control structure and a closed-loop temperature control method. The three-dimensional stacked chip comprises a multi-layer chip stacked structure, an embedded microfluid network, a distributed temperature sensing system, a mixed through silicon via interconnection array and an intelligent control unit. Through adoption of a sensing-heat dissipation-interconnection integrated periodic array architecture, functional cooperation of temperature sensing, fluid heat dissipation and vertical interconnection is realized. The distributed temperature sensing system monitors the temperature of each area of the chip in real time through a PN junction diode array, the intelligent control unit generates a regulation and control instruction based on a layered and zoned control algorithm, and precise flow regulation is conducted on each layer of micro-channels through independently controlled micro-valves and variable-rate micro-pumps. According to the system, a complete closed-loop control framework from sensing, decision making to execution is constructed, the limitation of a traditional heat dissipation scheme in the aspects of dynamic response and management precision is broken through, intelligent fine temperature control of the three-dimensional stacked chips is achieved, and the heat dissipation efficiency and operation reliability of the chips are remarkably improved.