75 results about "Micro valve" patented technology

The invention relates to the technical field of lasers, in particular to a laser heat management device and a control method thereof, the laser heat management device comprises a cooling substrate, the cooling substrate is internally provided with a micro-channel, the micro-channel comprises a main channel and a branch channel, and the main channel is used for circulating cooling water; the cooling substrate is provided with a detection control area, the detection control area is located at the joint of the branch channel and the main channel, the detection control area is provided with a phase change micro-valve and a detection assembly, the detection assembly is used for collecting temperature data, the phase change micro-valve comprises a phase change material and a flexible separation blade, and after the valve is opened, the phase change material generating phase change pushes the flexible separation blade, and the phase change micro-valve is connected with the detection assembly. The communication state of the main channel and the branch channel is controlled; the main controller is used for receiving the temperature data of all the detection control areas and controlling the valves of the corresponding detection control areas to be opened or closed according to the deviation between the temperature data and the target temperature. The temperature gradient of the laser can be reduced at least so as to ensure that the laser realizes a long-term stable working state.

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. Name of the designed product: Linear motor exhaust gas recirculation valve (micro EGR valve). 2. Use of the designed product: For passenger car control exhaust flow. 3. Design points of the designed product: In shape. 4. Picture or photo best showing the design points: Fig. 1.

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 utility model belongs to the technical field of needle inserting machines, and particularly relates to a micro valve body framework needle inserting machine. The vibration feeding device comprises a framework feeding mechanism and a contact pin feeding mechanism which are arranged on the rack and are respectively used for conveying a to-be-processed framework and a contact pin; the pin inserting device is arranged on the rack and used for inserting the metal inserting pins into the framework; wherein the needle inserting device can insert a required inserting needle into the framework at one time. The beneficial effects of the utility model are that the production efficiency can be obviously improved by adopting the automatic transportation and pin insertion mechanism, and the production cost can be reduced and the economic benefits of enterprises can be improved because the automatic production is realized and the manual intervention and error rate are reduced.

The invention provides an intelligent flavor blending machine which comprises a main body system, an air pump and a mixed atomization system, the design of a cam and a cross track is adopted in the mixed atomization system, and the main body system is connected with the mixed atomization system through a hose. In the main body system, raw material bottles are stored on the upper portion of a main body, and a stepping motor and a steering engine on the lower portion of the main body accurately control the output quantity of each raw material through a lead screw, a sliding table, a belt, a gear and a micro valve. And the mixing and atomizing system is used for fully mixing, atomizing and spraying the raw materials. The raw materials are mixed in real time according to different proportions as required and atomized, so that the required fragrance is regulated and treated in real time.

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.

The present disclosure belongs to the technical field of mechanical spraying, and a color change block with detection feedback as well as spraying equipment are provided. The color change block with detection feedback comprises a cleaning agent valve module, a color change micro valve module, a mixing pipe module and a turbidity detection module which are connected in sequence. A complete collinear common channel is formed among these modules, and the wall surface of the common channel is a complete plane. The turbidity detection module is further connected to the control module and used for monitoring the turbidity of a medium flowing through the common channel in real time so as to determine whether the medium in the common channel meets a cleaning requirement or not and feed a determination result back to the control module, and then the control module switches other media to form a closed-loop control.

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 provides a global cooperative control method and device for a vehicle air conditioner, electronic equipment and a storage medium. The global cooperative control method comprises the steps that in-vehicle multi-mode biological characteristic data, external environment data and vehicle navigation data are obtained; processing the multi-modal biological characteristic data to obtain a passenger comfort index; processing the external environment data and the vehicle navigation data, and using an LSTM neural network model to predict the environment parameter change of each partition within a preset time; performing dynamic partition control processing based on the passenger comfort index and the environmental parameter change, and generating temperature set values and airflow mode instructions of a plurality of partitions; and based on the temperature set value and the airflow mode instruction, the piezoelectric ceramic microvalve array is controlled to adjust the cold and hot airflow mixing proportion and flow direction, so that global cooperative control over the vehicle air conditioner is achieved. According to the mode, the data dimension is increased, insufficient comfort is avoided, the energy utilization efficiency is improved through dynamic partition control processing, and the intelligent level of the system is improved by predicting environmental parameter changes.

The invention discloses a protection mechanism for a power conversion box, and relates to the technical field of power protection, the protection mechanism comprises a conversion main body, the bottom of one side of the inner wall of the conversion main body is fixedly connected with a protection shell, one side of the outer wall of the protection shell is fixedly connected with a mounting box, and the inner wall of the protection shell is provided with a protection assembly. A voltage stabilizer is fixedly connected to the center of one side of the outer wall of the mounting box, a wire is inserted into one side of the outer wall of the voltage stabilizer, and one end of the wire is inserted into the input end of the conversion body. According to the protection mechanism for the power conversion box, a micro valve arranged in the gas storage bin is started, and carbon dioxide gas filled in the gas storage bin is sprayed into the mounting pipe along the gas guide pipe, so that the problem that in the using process of a traditional protection mechanism for the power conversion box, when a circuit breaker is triggered and a power supply is cut off due to unstable voltage, power terminals are separated is further solved; the contact area is suddenly reduced, so that the local electric field is suddenly increased, the temperature of the generated arc is high, internal devices are damaged, and fire disasters are easily caused.

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 invention discloses a loop heat pipe for replacing liquid return of a capillary core with the Laplace pressure difference of a conical channel, and belongs to the technical field of loop heat pipes. The loop heat pipe comprises an evaporation cavity, a condenser, a steam pipe and a liquid loop, and the input end of the steam pipe is connected with the output end of the evaporation cavity; the input end of the steam pipe and the input end of the condenser are connected with the input end of the evaporation cavity through a liquid loop, a conical liquid return channel and a micro valve are additionally arranged on the liquid loop, and the conical liquid return channel is provided with a large end and a small end; the evaporation cavity is connected with the condenser through a steam pipe, the condenser is connected with the liquid collecting cavity, and the liquid collecting cavity is connected with the large end of the conical liquid return channel. According to the loop heat pipe, the contact angle theta of the lyophilic surface in the conical liquid return channel is smaller than 90 degrees, so that a liquid-gas interface generates higher curvature at the small end, Laplace pressure difference is formed, liquid is pushed from the large end to the small end to complete liquid return, a traditional capillary core structure is not needed, the problem that pores of a capillary core are prone to being blocked is solved, and the service life of the loop heat pipe is prolonged.

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 is suitable for the technical field of micro electro mechanical systems, and particularly relates to a micro valve manufacturing method, a micro valve and electronic equipment. According to the micro valve manufacturing method, at least two valve assemblies are arranged at the position of a through hole of a substrate, and a strip-shaped gap is formed between every two adjacent valve assemblies; the projection of the strip-shaped gap on the first surface at least partially falls into the through hole, the strip-shaped gap and the through hole form a communicated channel, the valve assembly is made of a valve layer, heat is generated through the heat source piece and conducted to the valve layer, and due to the fact that the thermal expansion coefficients of the valve layer and the substrate are different, or at least two thin film layers with different thermal expansion coefficients exist in the valve layer, the heat source piece can conduct heat to the valve layer. The deformation quantity of the valve assembly is controlled by controlling the heating power of the heat source piece, so that the opening and closing angle of the valve is controlled, the fluid adjusting function of the channel is achieved, the structure is simple, power consumption is low, and reliability is high.

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 handheld disassembling tool comprises a handheld barrel, a front valve body carrier and a rear valve body carrier, the front valve body carrier and the rear valve body carrier are assembled in the handheld barrel in a nested mode, the handheld barrel comprises a full barrel with a complete circumferential interface and a half barrel with an open interface, and the cross section of the half barrel is semicircular. The front valve body carrier comprises a front assembling body assembled in the full cylinder and a front valve body assembling seat assembled in the half cylinder, the front assembling body is fixedly connected with the front valve body assembling seat, and the rear valve body carrier is fixedly assembled at the tail end of the half cylinder and is in abutting fit with the tail end of the front valve body assembling seat; a separation positioning structure used for positioning a valve body separation interface is arranged at the joint where the rear valve body carrier abuts against and is matched with the front valve body assembling base, and a driving mechanism used for driving the front valve body carrier to be far away from the rear valve body carrier in the axial direction is arranged at the front end of the full barrel. The miniature valve body can be quickly and efficiently disassembled and separated by driving the front valve body carrier to be axially far away from the rear valve body carrier, and the operation is convenient.