118 results about "Helical channel" patented technology

A reactor for performing a synthesis process for producing a product from at least two reactants, the reactor comprising: a body having a longitudinal axis, an inflow side and an outflow side; an interior; at least two reactant conduits, each connected on the inflow side to at least one distributor channel; at least one product conduit connected on the outflow side to the at least one collection channel; at least one distribution section comprising at least two distributor channels and at least one diverter; at least one mixing section in which at least two distributor channels are connected via a mixing channel and at least two reactants can be combined; at least one reaction channel; at least one collection section comprising at least one collection channel; at least one inflow-side feed conduit for the entry of a heat transfer medium into the interior; the heat transfer medium can flow around at least a part of the length of the at least one reaction channel in the interior, and / or at least one heat exchange channel in which the heat transfer medium can flow is provided, wherein the at least one sub-section is arranged adjacent to the at least one reaction channel, and wherein the at least one heat exchange channel and the at least one reaction channel are separated from each other by a common channel wall, and wherein the at least one reaction channel is a multiple spiral comprising two or more spiral channels, each spiral channel of the multiple helixes is connected via at least one mixing section to at least one distributor channel of each of the at least two reactants, and wherein on the outflow side each spiral channel of the multiple helixes is connected to at least one collecting channel.

Disclosed is a wing assembly for an aircraft. The wing assembly comprises a fixed wing, a wing tip device, a wiring harness and a harness guide. The wing tip device is moveably mounted at a joint at an end of the fixed wing. The wing tip device is moveable about the joint between: (i) a flight configuration for use during flight, and (ii) a ground configuration for use during ground-based operations, in which ground configuration the wing tip device is moved relative to the fixed wing such that the span of the wing is reduced. The wiring harness extends between the fixed wing and the wing tip device. The wiring harness comprises a plurality of conductors and is arranged to transmit electrical power and / or data to the wing tip device. The harness guide is located between the fixed wing and the wing tip device. The harness guide comprises a helical channel configured to receive the wiring harness and guide the wiring harness between the fixed wing and the wing tip device.

The invention discloses a combined type sand prevention oil-gas separator with a sand discharging structure, and belongs to the technical field of oil-gas separation. Comprising a shell, a spiral anchor is fixedly connected to the lower side in the shell, the spiral anchor and the shell are matched to form a spiral channel, an oil discharge channel is formed in the upper side of the shell, and oil discharge holes which are distributed at equal intervals in the circumferential direction and communicate the spiral channel with the oil discharge channel are formed in the shell. The outer shell is provided with an exhaust channel communicating with the upper side of the spiral channel, a bottom shell is arranged on the lower side of the outer shell, a fixing plate is fixedly connected into the bottom shell, the fixing plate is slidably connected with a connecting rod, and a first spring is fixedly connected between the connecting rod and the fixing plate; the connecting rod is fixedly connected with a sealing plug which slides on the lower side of the bottom shell in a sealing mode. According to the oil-gas separator, pressure is applied to the oil pipe, so that the bottom shell is unblocked by the sealing plug, sand in the bottom shell is discharged, and normal operation of the oil-gas separator is guaranteed.

Combined cooling of electric machines are disclosed, for example, motors or generators, directly and by means of a water jacket. Particularly, it is provided an electric machine (100), comprising a housing (110), a water jacket (120) integrated in the housing (110) and a stator (130) accommodated in the housing (110) and comprising stator end windings (133) at a first axial end and a second axial end of the stator (130) and a plurality of channels (135) extending entirely through the stator (130) between the first axial end and the second axial end of the stator (130), wherein the plurality of channels (135) is configured and arranged for guiding a coolant towards the stator end windings (133). The water jacket (120) comprises an inlet (122) and an outlet (124) and a helical channel (128) connecting the inlet (122) with the outlet (124) and having a diameter larger than the diameter of the inlet (122) and the diameter of the outlet (124).

The application relates to the technical field of optical fiber communication cables, in particular to an ultra-low-loss hollow-core optical fiber composite cable based on an anti-resonance structure, which comprises a cylindrical optical fiber composite cable body, a reinforcing rod serving as a support member is arranged at the center of the optical fiber composite cable body, a plurality of spiral partitions fixedly connected with the reinforcing rod are uniformly distributed in the circumferential direction of the reinforcing rod, adjacent spiral partitions form independent spiral cavities, the spiral cavities are variable-pitch spiral channels, hollow-core optical fibers and solid-core optical fibers are arranged in the spiral cavities at intervals and are wound around the outer periphery of the reinforcing rod along the spiral tracks of the spiral partitions, and a sealing protection structure is mounted on the periphery of the spiral cavities, so that the problems in the prior art that the stress resistance is weak, the optical fiber is easily broken or the transmission loss is increased when the optical fiber is laid, stretched and bent, and the crosstalk between the optical fibers is serious, thereby affecting the transmission stability are effectively solved.

The utility model discloses a plastic particle cooling and deodorizing device, which belongs to the technical field of plastic particle processing devices and comprises a base. The buffering assembly is connected to the base; the cooling and deodorizing mechanism comprises a reaction frame connected to the top of the buffer assembly, a rotating disc is fixedly connected to the reaction frame, a spiral channel is defined by the rotating disc and the reaction frame, the top of the reaction frame communicates with an air inlet pipe, and the side portion of the reaction frame communicates with a plurality of air outlet holes; one end, far away from the reaction frame, of each air outlet hole points to the spiral channel. According to the utility model, an external compressed nitrogen source fills compressed nitrogen into the reaction frame through the gas inlet pipe, the electrodes are electrified to generate a high-voltage electric field, ionize nitrogen, generate high-energy electrons and free radicals, and react and absorb volatile organic compounds released by plastic particles to finish deodorization; and meanwhile, redundant nitrogen is discharged from the air outlet holes, and heat dissipation is conducted on the plastic particles in the spiral channel.

This invention relates to a spiral noise-canceling earphone, comprising: an earphone head including a front cavity and a rear cavity opposite to the front cavity, wherein a sound-generating unit is disposed within the front and rear cavities; one end of the rear cavity that connects to the front cavity is designated as the front end, and the other end as the rear end; the inner wall of the rear cavity extends from the front end to the rear end, and the distance to the center of the rear cavity decreases as it approaches the rear end; a noise-canceling structure is provided on the inner wall of the rear cavity, the noise-canceling structure including a first spiral ridge, a second spiral ridge, and a spacer groove; the first spiral ridge and the second spiral ridge extend clockwise or counterclockwise from the front end of the rear cavity along its inner wall to the rear end; through the cooperation of the first spiral ridge, the second spiral ridge, and the spacer groove, combined with the conical cavity and the gradually changing width of the spiral ridge, a complex sound wave propagation path is formed; when noise passes through these spiral channels, the sound waves are subjected to multiple reflections and interferences, resulting in gradual energy attenuation, thereby achieving the effect of eliminating noise and improving sound quality.

The invention provides a pepper quality screening method and device based on a YOLOv8 algorithm, and relates to the technical field of machine vision sorting. According to the invention, the spiral channel vibrating screen is adopted to orderly convey hot peppers to the conveyor belt, images are collected through the camera, and a YOLOv8 model is utilized to carry out target detection and classification. According to the recognition result, the bad peppers and the good peppers are accurately separated through the air injection sorting unit, and automatic, high-precision and high-efficiency pepper screening is achieved.

The application discloses a feed surface floating powder removing device and relates to the technical field of feed production.The device comprises a straight cylinder, a blow pipe, a first conical cylinder and a driving device.The inner side wall of the straight cylinder is provided with a flow guide spiral channel, and the cross section of the flow guide spiral channel is rectangular.The blow pipe is arranged on the upper end of the straight cylinder and is in communication with the flow guide spiral channel.The upper side wall of the blow pipe is provided with a feeding port.The first conical cylinder is arranged on the lower side of the straight cylinder.The upper end of the cavity of the first conical cylinder is in communication with the flow guide spiral channel and the cavity of the straight cylinder.The upper end of the first conical cylinder is larger than the lower end.The inner wall of the first conical cylinder is provided with a first soft hair brush layer.The lower end of the first conical cylinder is provided with a first discharging port.The first conical cylinder can rotate around its axis.The axis of the straight cylinder is coincident with the axis of the first conical cylinder.The driving device is arranged on the outer side of the first conical cylinder.The driving device is in rotational driving connection with the first conical cylinder.The device provided by the application has high powder removing efficiency and can avoid damage to feed particles.

In the present invention, while a rotary shaft is stationary or rotating at a low speed, a lip part is brought into pressure contact with a contact surface provided on a housing to seal between the rotary shaft on the leading end side of a device and the housing, and the lip part is separated from the contact surface to release the sealing when the rotary shaft rotates at a prescribed rotation speed exceeding the low-speed rotation or higher. The present invention comprises a deformation reduction member that limits deformation of the lip part while the rotary shaft is rotating. The housing is provided with an outer-diameter-side flow path through which air sucked into the device from the outside flows in the device, and the outer-diameter-side flow path is provided with an outer-diameter-side spiral passage. An air discharge path for discharging air from the leading end side of the device is in communication with the outer-diameter-side flow path, and a sealing device is disposed in the air discharge path. In addition to the centrifugal force of the rotary shaft in rotation, the air flowing through the outer-diameter-side flow path acts at the time when the lip part of the sealing device is separated from the contact surface.

The invention discloses a chemical plastic pipe bending strength detection device based on an intelligent sensor, and relates to the technical field of chemical safety, the chemical plastic pipe bending strength detection device comprises a rack and a control box, the inner side of the rack is provided with a spiral feeding mechanism, and one end of the spiral feeding mechanism is fixedly connected with a bending detection mechanism; a curvature adjusting mechanism is arranged at one end of the bending detection mechanism, connecting pipes are slidably connected to the inner sides of the two ends of the rack, a spiral channel formed by a plurality of bending pipes is formed in the inner side of the bending detection mechanism, when a chemical pipeline penetrates through the spiral channel, the chemical pipeline is subjected to stretching and compression cyclic stress continuously in a full-circumference mode, stress distribution is more uniform, and the bending detection efficiency is improved. The spiral stress state, such as a coil pipe, a coiled pipe, a winding pipe and the like, of the chemical pipeline in actual service is approached; besides bending stress, circumferential torsion stress and radial shearing stress are generated due to constraint of the spiral channel, and the spiral channel is more suitable for the composite stress characteristics of the chemical pipeline under complex working conditions, such as micro rotation and spiral bending caused by medium flow.

A method for preparing a photocurable high-temperature superconducting spiral includes: S1, constructing an additive manufacturing system; S2, building model slice data; S3, preparing immiscible YBCO ceramic precursor slurry and sacrificial slurry; S4, connecting the YBCO ceramic precursor slurry and sacrificial slurry to the additive manufacturing system, wherein the YBCO ceramic precursor slurry encapsulates the sacrificial slurry during extrusion; S5, importing the model slice data into the additive manufacturing system and controlling the system to move according to a preset program to prepare the target spiral; S6, curing the spiral to obtain a three-dimensional spiral green body with a complete 3D sacrificial material network embedded inside; S7, degrading the sacrificial material to leave cavity channels; S8, debinding the three-dimensional spiral by performing a heat treatment regime to 500°C at a preset heating rate; S9, sintering the debinded three-dimensional spiral to finally obtain a three-dimensional interconnected spiral channel network.

The utility model provides an evaporator for an extrusion type ice maker, which comprises a base, an inner pipe which is connected with the base in a matching manner, is hollow inside and is provided with a water inlet, an outer pipe which is sleeved outside the inner pipe and is provided with a refrigerant inlet and a refrigerant outlet, a screw rod positioned in the inner pipe, and a spiral guide piece positioned between the inner pipe and the outer pipe, wherein the spiral guide piece can be integrated or formed by splicing a plurality of single spiral sheets. The evaporator has the advantages that refrigerants can orderly flow along the spiral channel in a closed cavity formed by the spiral guide piece, the upper end cover, the lower end cover, the inner pipe and the outer pipe, so that heat exchange surfaces of the inner pipe wall of the evaporator are evenly distributed, the ice making process is rapid and smooth, and accumulated ice blocks are prevented from blocking an ice outlet channel.

The application discloses a quartz piece vacuum adsorption fixing device and relates to the technical field of quartz piece processing. The quartz piece vacuum adsorption fixing device comprises an adsorption table, the adsorption table comprises a pedestal, a funnel cavity formed in the interior of the pedestal, a table plate fixedly connected to the top end of the pedestal, a mosquito coil-shaped spiral channel formed in the interior of the table plate, a catheter fixedly connected to the side surface of the table plate and in communication with the outer end port of the spiral channel, rubber through strips inserted into the spiral channel and the catheter, and a plurality of air channels uniformly formed in the interior of the table plate along the spiral path of the spiral channel, and the middle part of each air channel is in communication with the spiral channel. By selectively blocking or opening some air channels through the movement of the rubber through strips, the size range of the quartz piece to be fixed can be matched with the unblocked air channels, the type changing time of the adsorption table is greatly shortened, the equipment investment cost is reduced, and the production efficiency is improved.

The invention discloses an external rotor motor for an eVTOL aircraft. A stator fixing shaft is arranged in the motor, a stator is arranged on the fixing shaft, the stator adopts a tooth yoke separation structure, and a 3D printing integrated welding-spot-free variable cross-section flat wire winding is arranged in a slot, so that the slot fullness rate of the motor is increased, and the efficiency of the motor is improved; a rotor is arranged outside a stator, a magnetism gathering type Halbach permanent magnet pole is arranged on the rotor, a shell, a front end cover and a rear end cover are arranged outside the rotor, one end of a fixing shaft is connected with a fairing through a fairing bearing, the fairing is fixedly connected with the front end cover, blades are arranged outside the fairing, an airflow channel is formed in the fairing, and a plurality of spiral channels are formed in the stator. The airflow channel is communicated with the spiral channel; when the motor is started, the blades and the shell rotate at the same time, and wind is driven to enter the motor, pass through the spiral channel and flow out of the channel in the fixed shaft. The stator spiral channel greatly increases the cooling area of the stator core, reduces the stator temperature rise of the external rotor motor, and effectively alleviates the problems of winding temperature and stator hot accumulation.

The application discloses a direct drive type torque motor, which is characterized in that a cooling assembly is connected to the shell, and a damping assembly is connected to the rear side of the shell; when in use, the first scraper is used to scrape off the scale on the inner walls of the first channel and the second channel, thereby avoiding the problem that the heat dissipation effect is reduced due to the scale attached to the inner walls of the spiral channel in the prior art; meanwhile, the second scraper is used to scrape off the scale in the middle of the inner walls of the second channel, thereby avoiding the scale residue phenomenon; meanwhile, the first circular rod is cleaned automatically while the first channel is cleaned, thereby saving the cleaning steps; when artificial maintenance is performed, the first scraper is temporarily folded by the fixing block, thereby solving the problem that the first scraper in the expanded state is difficult to be sleeved into the first channel, and after the first scraper moves to the second channel, the first scraper is automatically expanded again by the linkage plate, so as to be used for cleaning the inner walls of the second channel next time.

The application discloses a composite sand prevention oil-gas separator with sand discharging structure, belonging to the technical field of oil-gas separation. The composite sand prevention oil-gas separator comprises a shell, a spiral anchor fixed to the lower side of the shell, a spiral channel formed by the spiral anchor and the shell, an oil discharging channel arranged on the upper side of the shell, oil discharging holes arranged on the shell in a circumferential equidistant distribution mode and communicating the spiral channel and the oil discharging channel, an exhaust channel communicating the upper side of the spiral channel, a bottom shell arranged on the lower side of the shell, a fixed plate fixed in the bottom shell, a connecting rod slidingly connected to the fixed plate, a first spring fixed between the connecting rod and the fixed plate, and a sealing plug fixed to the connecting rod and sealingly sliding on the lower side of the bottom shell. The sealing plug is unblocked to the bottom shell by applying pressure to the oil pipe, so that the sand in the bottom shell is discharged, and the normal operation of the oil-gas separator is ensured.

The utility model discloses a cooler facilitating feeding and discharging of products, and belongs to the technical field of coolers, the cooler facilitating feeding and discharging of the products comprises a cooling box and cooling air holes symmetrically formed in the edge portion of the side wall of the cooling box, an assembly window is formed between the cooling air holes, and a fan is installed on the inner side of the assembly window. Supporting bosses are symmetrically and fixedly connected to the inner wall of the cooling box, guide rods are welded to the upper surfaces of the supporting bosses, materials needing to be cooled are added into a feeding pipe through a hopper, meanwhile, a driving motor is started to drive a shaft rod to rotate, the materials are conveyed upwards through a first spiral blade, and finally the materials fall into a cooling cylinder; the vibration motor is started, under the elastic acting force of the spring, the connecting plate is matched with the guide rod to slide up and down, then the cooling cylinder is driven to vibrate up and down, it can be guaranteed that materials normally slide down in the spiral channel, material blocking is prevented, and feeding and discharging are convenient.

Sound generating device (1) for applications in an AVAS vehicle, comprising a two-part housing (3, 5) in which a loudspeaker (11) for outputting an acoustic signal and a signal frequency extension unit are positioned, wherein the loudspeaker (11) is arranged in a first housing part (3) whose protective grille in front of the loudspeaker diaphragm (13) is in direct contact with the environment of the vehicle, and the first housing part (3) is covered with a second housing part (5), characterized in that the signal frequency extension unit (15, 33) is positioned on the first housing part (3) next to the loudspeaker (11) arranged in an opening (17) of the first housing part (3) and is covered by the protective grille (21) for direct contact with the environment of the vehicle, and the signal frequency extension unit is designed as a helical or spiral channel (15),wherein the channel (15) has an open channel outlet (19) to the outside of the first housing part (3) and a structure of the helical channel (15) extends in a main forming direction of the first housing part (3).

This invention provides a core feeding device for a pebble bed high-temperature gas-cooled reactor, comprising a device body, an intermediate support column, and a helical support body. The inner cavity of the device body, the intermediate support column, and the helical support body work together to radially limit the fuel spheres, forming a downward helical channel. The fuel spheres enter the device body through the feed inlet and roll downwards through the helical channel of the helical support body, completing the feeding process. Because the movement channel of the fuel spheres is an inclined downward helical surface, dust and debris carried by the fuel spheres do not accumulate in the helical channel and fall smoothly into the space below, effectively improving the fuel sphere clogging problem caused by dust and debris. This ensures smooth and reliable movement of the spherical fuel elements in the feeding device, thereby solving the problem of fuel sphere clogging caused by dust and debris.

The application discloses a human-computer interaction situation awareness method and system based on a big data center, relates to the technical field of human-computer interaction, and comprises the following steps: constructing a cylindrical coordinate system and sector units based on the outer surface of a stress cone of a dry pluggable terminal and the outer surface of the stress cone of the dry pluggable terminal, and counting the number of discharge events of the sector units; screening a plurality of sector units segmented in the axial direction of the cylindrical coordinate system based on the number of discharge events, obtaining skeleton sector units, and determining an angular central angle; constructing a spiral development plane based on the angular central angle, and generating a spiral channel contour curve on the spiral development plane; obtaining a coverage ratio according to the spiral channel contour curve; receiving an input confirmation instruction based on the coverage ratio, and generating a structural situation confirmation mark; and outputting a structural degradation situation result based on the structural situation confirmation mark; and the application improves the consistency of terminal structure state management.

The utility model provides a microbubble generating tank. The microbubble generating tank comprises a water inlet, a water outlet and a double-helix channel arranged between the water inlet and the water outlet, the double-spiral channel is nested to form an outer spiral channel and an inner spiral channel; one end of the outer spiral channel is communicated with the water inlet, and one end of the inner spiral channel is communicated with the water outlet; and the other ends of the outer spiral channel and the inner spiral channel are communicated with each other. The utility model further provides a microbubble generating device which comprises an air pump, a water pump and the microbubble generating tank. The utility model further provides a water outlet device. The water outlet device comprises a water outlet device body and the microbubble generating device, and the water inlet end of the water outlet device is communicated with the water outlet of the microbubble generation tank.

The invention relates to a three-dimensional spiral channel acoustic black hole noise reduction structure and an air inlet and outlet pipeline. The three-dimensional spiral channel acoustic black hole noise reduction structure comprises a cylindrical base body, a three-dimensional spiral channel array and a micro-perforated panel, wherein the cylindrical base body is suitable for being installed on the inner wall of a target pipeline, the three-dimensional spiral channel array is arranged on the inner wall of the cylindrical base body, the three-dimensional spiral channel array comprises a plurality of acoustic black hole structure units, and each acoustic black hole structure unit is arranged in a three-dimensional spiral mode in the axial direction of the pipeline. Each acoustic black hole structure unit forms a three-dimensional spiral channel, so that the plurality of acoustic black hole structure units form the three-dimensional spiral channel array, and the micro-perforated panel is arranged on the radial inner side of the three-dimensional spiral channel array.

The motor base comprises a base inner cylinder and a base outer cylinder, and a flow passage is arranged between the base inner cylinder and the base outer cylinder; a shunting assembly, a first water outlet and a second water outlet are arranged on the outer wall of the machine base outer cylinder, the overflowing channel is a spiral channel arranged in the length direction of the machine base outer cylinder, and the first water outlet and the second water outlet are communicated with the two ends of the overflowing channel respectively; the connecting position of the flow dividing assembly and the machine base outer barrel can be adjusted, a water inlet is formed in the top of the flow dividing assembly, a first flow channel and at least one second flow channel which are communicated with the water inlet are formed in the flow dividing assembly, and the second flow channel can be communicated with the end of the flow passing channel; the first flow channel can be communicated with the overflowing channel, and the communication position corresponds to the arrangement position of the motor iron core. The motor base provided by the invention solves the technical problem of low heat dissipation efficiency of a motor caused by incapability of converting a cooling mode according to the temperature difference between a motor iron core and an end winding in the prior art.

The invention relates to the technical field of heat exchangers, and discloses a multi-shell-pass spiral baffle plate shell-and-tube heat exchanger which comprises a shell, a spiral baffle plate, a spiral baffle plate, a spiral baffle plate and a spiral baffle plate, and is characterized in that a tube body is mounted in an inner cavity of the shell and used for normal flowing of gas, and the shell is used for flowing of liquid; the control mechanism is installed on one side of the shell and used for controlling the flowing speed of gas in the pipe body; and a working mechanism. According to the invention, the structure that the gap is kept between the continuous spiral baffle plate and the inner wall of the shell is adopted, so that shell pass liquid keeps continuous and uniform spiral flow in a single spiral channel, and bypass short circuit caused by sudden change of flow direction in a turn-back channel of an arch-shaped baffle plate is completely eradicated; and the tube pass liquid performs secondary dividing wall heat exchange with the first flow of liquid of the shell pass and the tube pass gas, so that the total heat transfer coefficient is obviously improved on the premise of not increasing the shell pass pressure drop.

A material adding part of the friction stir wire feeding material adding device comprises a static shaft shoulder and a stirring shaft which are inserted together, the stirring shaft comprises a driving shaft, a screw rod and a stirring needle which are connected in sequence, a spiral channel is formed between the screw rod and the static shaft shoulder, and a wire feeding hole communicated with the spiral channel is formed in the static shaft shoulder; the motor is mounted on the static shaft shoulder, the driving shaft is slidably connected with the driving ring, and an output shaft of the motor drives the stirring shaft to rotate through the driving ring; the pressing part comprises a pressing plate fixed on the driving ring and an electric cylinder mounted on the pressing plate; and the electric cylinder drives the stirring shaft to do reciprocating motion in the axial direction relative to the hollow shaft. A friction stir additive deposition method is also disclosed. The motor is used for driving the stirring shaft to rotate, the downward pressing part is used for adjusting the height of the stirring shaft relative to the static shaft shoulder, the stirring needle is made to pierce the base plate or the additive layer, additive operation can be conducted only by installing the static shaft shoulder or the base plate on the mobile equipment or a mobile component of the equipment, and the stirring friction additive manufacturing cost is effectively reduced.

The energy-saving efficient boiler comprises a boiler body, a boiler cover, a water inlet pipe and a water outlet pipe and further comprises a heating cylinder core, the boiler body comprises an inner boiler cylinder and first carbon fiber heating wires evenly wound on the outer wall of the inner boiler cylinder, and the heating cylinder core is installed in the center of the interior of the inner boiler cylinder. A spiral spacer is further installed between the heating cylinder core and the inner furnace cylinder, the space between the heating cylinder core and the inner furnace cylinder is divided into a spiral channel through the spiral spacer, and the heating cylinder core comprises a heat collection cylinder and a second carbon fiber heating wire evenly wound on the inner wall of the heat collection cylinder. Water is simultaneously heated on the inner side and the outer side through the inner furnace barrel and the heat collecting barrel respectively, internal and external two-way heat radiation is formed, water flow passes through a spiral channel formed by the spiral spacer, the water flow contact area is effectively increased, the heating efficiency is improved, heating is more uniform, heat loss is reduced, and the service life of the boiler is prolonged. Therefore, a better energy-saving effect is achieved.

This utility model discloses a heat-dissipating cold heading mold, comprising: a heat-dissipating base with several mounting grooves; several cold heading molds, the outer walls of which at least partly conform to the mounting grooves, and are detachably connected to the heat-dissipating base by bolts; each mounting groove has a first inlet and a first outlet on its placement surface; a spiral channel is formed on the cold heading mold, with both ends extending to the bottom surface of the cold heading mold to form a second inlet that mates with the first inlet and a second outlet that mates with the first outlet; a total inlet and a total outlet are formed on the heat-dissipating base, the total inlet connecting to several first inlets, and the several first outlets converging to connect to the total outlet; and a bypass channel is formed on the heat-dissipating base for the operation of the mold ejector rod. This utility model has a simple structure and can effectively dissipate heat during the cold heading process, preventing prolonged processing from affecting the mold and thus the product yield.

The invention discloses a micro-fluidic chip for droplet generation, solidification and deoiling integration and a method thereof. The micro-fluidic chip comprises a spiral micro-channel, a chip sample inlet, a capturing structure and a chip sample outlet, wherein the spiral micro-channel is internally provided with a capturing structure which is used for liquid drop generation, solidification and deoiling and is adjustable in size. When in use, the channel is infiltrated by an oil phase, then hydrogel wrapping cells is introduced into the spiral channel, and finally the oil phase is introduced, so that liquid drops are formed at the capturing structure and are captured; then, the liquid drops are solidified in situ in the channel, a degreaser is introduced to remove the surrounding oil phase, and finally, the liquid drops are cleaned through a culture medium and subjected to perfusion culture or transfer. The flow speed can be accurately controlled without using an injection pump in a matched manner, the liquid drops can be generated by manual operation only through the pipette, the cost is low, and the operation is simple. The micro-fluidic chip lays a good technical foundation for subsequent development of a high-throughput and automatic organoid culture or drug screening platform.

A flat spiral microfabricated gas chromatography column is formed by etching a spiral channel into a planar substrate and bonding additional substrates to each side thereof. Holes or vias in these substrates form an entrance and an exit to the spiral channel etched in the middle substrate. More than one spiral may be etched into a substrate and more than one entrance and exit may be etched into the top and bottom substrates to provide an entrance and an exit to the spiral channel. The spiral channel may have an etched width that is wider than the substrate is thick. In this fashion, a high aspect ratio column is formed with the channel width defining the long dimension of the high aspect ratio column and the thickness of the substrate defining the short dimension of the high aspect ratio column.