279 results about "Channel inlet" patented technology

The invention discloses a full-automatic multi-component dispensing dynamic mixing proportion closed-loop control system, which relates to the technical field of semiconductor manufacturing, and comprises a multi-component feeding module, a dynamic proportioning execution module, an online detection module, an intelligent control module, a mixing reaction module, an anti-pollution module and a data management module, the device has the advantages that anti-sticking conveying and rapid switching of multi-form raw materials are achieved through a plurality of independent flow channels and inner wall diamond-like coatings of the multi-component feeding module in cooperation with a flow channel inlet vibrating screen and an outlet electromagnetic valve, a double-metering-pump parallel structure and a double-axial-flow type pulse damper are adopted in the dynamic matching execution module, and the dynamic matching efficiency is improved. And by combining a nonlinear model prediction controller of the intelligent control module and BP neural network adaptive compensation, the dynamic adjustment precision of the multi-component mixing ratio is remarkably improved, the mixing uniformity and purity reach the standard, the product scrapping caused by the ratio error is greatly reduced, and the photoresist production yield and stability are improved.

In some examples, a heat exchanger includes a first flow channel having a first flow channel inlet and a first flow channel outlet. The heat exchanger also includes a second flow channel having a second flow channel inlet and a second flow channel outlet. A fin may separate the first flow channel from the second flow channel. The fin may define at least one aperture configured to allow fluid to flow between the first flow channel and the second flow channel if one of the first flow channel inlet or second flow channel inlet becomes constricted through a buildup of foreign object debris.

The invention discloses a microchannel condenser flow distribution global simulation method and system, and relates to the field of microchannel condenser flow distribution calculation. The method comprises the following steps: firstly, constructing a heat transfer and resistance model and forming a single-channel model by combining the size and structure of a parallel channel of the condenser and working medium flow heat exchange characteristics, and constructing a shunting and converging numerical model according to an inlet and outlet area structure of the condenser; secondly, numerical simulation is conducted on the division and convergence numerical model, and stable initial field distribution is obtained; then, determining the mass flow rate of each channel based on the shunting initial field, calculating the back pressure of the channel by taking the mass flow rate as the inlet boundary condition of a confluence model, calculating the inlet pressure of the channel through a single-channel model, and updating the outlet boundary of the shunting model; and finally, iterating the process until the channel mass flow error is smaller than a limit value, obtaining the distribution of the sub-confluence three-dimensional physical field and the one-dimensional flow heat exchange parameters and the heat exchange amount of the parallel channels, and checking whether the heat exchange amount meets the design requirements or not. The method gives consideration to calculation efficiency and precision, can provide support for structure optimization of the micro-channel condenser, and is suitable for micro-channel condenser design in the fields of refrigeration equipment, air conditioning systems and the like.

The invention provides a multi-feedback-channel fluid oscillator, and belongs to the technical field of fluid jetting devices. Comprising an oscillation cavity, an inlet, a nozzle and at least three feedback channels, the inlet is formed in one end of the oscillation cavity, the nozzle is formed in the other end of the oscillation cavity, the nozzle and the inlet are oppositely arranged along the central axis of the oscillation cavity, and the feedback channels are circumferentially distributed around the central axis of the oscillation cavity. And each feedback channel is provided with a feedback channel inlet and a feedback channel outlet. Through the configuration design of the multiple feedback channels, the fluid can form feedback control flow through the feedback channels, and the fluid entering the oscillation cavity through the inlet flows along the wall of the oscillation cavity in multiple directions and is switched through the coupling effect of the fluid coanda effect and multi-channel backflow feedback. And finally, multi-direction sweeping self-oscillation jet flow is formed at the nozzle, so that the space coverage range and the atomization efficiency of the jet flow are greatly improved.

The invention provides an SOFC (Solid Oxide Fuel Cell) multi-channel snakelike flow field with gradient rib layout, and belongs to the technical field of fuel cells. The SOFC multi-channel snakelike flow field comprises gradient ribs, strip-shaped ribs and a snakelike flow channel, the gradient ribs are arranged on the two sides of a U-shaped structure of the snakelike flow channel, and the strip-shaped ribs are arranged at the bottom of the U-shaped structure of the snakelike flow channel. The multi-channel snakelike flow field is combined with the gradient rib structure, a multi-channel inlet reduces the number of flow channel bending times, reduces the gas accumulation risk, avoids the problems of insufficient gas supply and the like, and the gradient rib layout is beneficial to gas mixing diffusion, mass transfer enhancement, pressure drop reduction and net power density improvement.

The invention relates to the field of valves, and discloses a multi-channel fluid pressure stabilizing control valve which comprises a pressure stabilizing valve composed of an upper valve body and a lower valve body, the lower valve body is installed at the bottom of the upper valve body, the lower valve body is provided with an input pipe and a plurality of output pipes, a cavity is formed in the lower valve body, the output pipes are communicated with the cavity, and the multi-channel fluid pressure stabilizing control valve further comprises an energy storage groove formed in the top of the lower valve body; the damping holes are formed in the bottom wall of the energy storage groove, the number of the damping holes is the same as that of the output pipes, and the energy storage groove communicates with the cavity through the damping holes. According to the invention, through a mode of combining mechanical feedback and multi-stage energy storage compensation, high-precision pressure stabilization is realized, a diaphragm senses the pressure change of a cavity in real time, a linkage pressure regulating seat regulates the opening degree of a liquid inlet channel, a passive energy accumulator and an active pre-charging energy accumulator work cooperatively, the pressure is quickly absorbed or supplemented, the fluctuation range of the inlet pressure of other channels can be effectively controlled, and the stability of the system is improved. And the pressure of each channel is stabilized at a set value.

The invention discloses a three-dimensional S-shaped bent inner concave runner design method and system. The design method comprises the following steps that a runner inlet molded line and a runner outlet molded line of a supersonic speed stamping runner are obtained; n discrete points are extracted in the circumferential directions of the inlet molded line and the outlet molded line to form N groups of inlet and outlet discrete point pairs; the change rule of S-shaped curve parameters is set in the circumferential direction of the runner inlet molded line / runner outlet molded line, and N S curves are obtained; acquiring a coordinate set of N * M discrete points on the curve set by M parallel interception planes; enveloping to generate an S-shaped curved surface, calculating the area of the two-dimensional cross section graph, and obtaining a flow channel sectional area change rule in the flow direction and a slope change rule of a center curve of the S-shaped curved surface; and judging whether the design is reasonable. The method can be suitable for computer-aided design of flow channels transited from various patterns including irregular patterns to circles or ellipses, and can meet the design of flow channels with offset inlet and outlet positions.

Some embodiments of the technology disclosed herein relate to a system having a hydrodynamic separator element defining an element inlet and an element outlet. The element outlet has a first element outlet and a second element outlet. The hydrodynamic separator element has a plurality of curved microfluidic channels in fluid communication. Each of the plurality of microfluidic channels are arranged to operate in parallel. Each microfluidic channel defines a channel inlet downstream of the element inlet and a channel outlet having a first channel outlet upstream of the first element outlet and a second channel outlet upstream of the second element outlet. A flow characteristic sensor is in sensing communication with the separator element. A controller is in data communication with the flow characteristic sensor, where the controller is configured to provide a first alert upon the flow characteristic being outside a first threshold.

The invention discloses a liquid cooling plate which comprises a liquid cooling plate body, the interior of the liquid cooling plate body is provided with a cooling cavity, the interior of the cooling cavity is provided with a plurality of polygonal heat conduction columns which are connected with the cavity bottom wall of the cooling cavity and are arranged in a regular array, and the polygonal heat conduction columns have at least two shapes; gaps between the polygonal heat conduction columns and gaps between the polygonal heat conduction columns and the cavity side wall of the cooling cavity are communicated with one another and form liquid cooling flow channels allowing cooling liquid to flow, the liquid cooling flow channels comprise honeycomb flow channels and straight flow channels, and the width of the honeycomb flow channels is at least partially narrowed; and the liquid cooling plate body is also provided with a flow channel inlet and a flow channel outlet which can be communicated with the liquid cooling flow channel. The honeycomb structure and the straight flow channel of the liquid cooling flow channel are formed by combining the polygonal heat conduction columns in different shapes, and the width of the honeycomb flow channel is at least partially narrowed, so that the flowing path of cooling liquid can be effectively optimized, the flowing speed of a cooling medium is increased, and the cooling efficiency is improved.

The present application provides a power assembly in which flow splitting is performed via a direct flow channel and an electric vehicle. A housing of the power assembly comprises a motor containing cavity, a speed reducer containing cavity, a flow channel inlet, and a plurality of flow channel outlets. The motor containing cavity is used for containing a stator and a rotor of a motor. The speed reducer containing cavity is used for containing a gear and a bearing of a speed reducer. The flow channel inlet is used for transporting a cooling liquid to the plurality of flow channel outlets via a same transmission flow channel. Two flow channel outlets among the plurality of flow channel outlets are used for transporting a cooling liquid to the motor containing cavity and the speed reducer containing cavity, respectively. An outlet of an oil pump is used for transporting a cooling liquid to the flow channel inlet via a heat exchanger and a direct flow channel. A valve is used for adjusting the flow of the cooling liquid transported to the flow channel inlet by at least one of the heat exchanger and the direct flow channel. According to the present application, the working temperature of the cooling liquid can be adjusted to improve the working performance and service life of the power assembly.

The application discloses a step variable pressure type micro-channel heat dissipation structure and a high-power laser cut-off light screen, and the structure comprises a flow channel (3), a gradually widened micro-channel (4), a first step variable pressure structure (5) and a second step variable pressure structure (6). The first step variable pressure structure (5) and the second step variable pressure structure (6) comprise a plurality of step-by-step increased elliptical cylinder arrays, the number of the elliptical cylinders is step-by-step increased, the length of the short axis of the elliptical cylinder is step-by-step decreased, the fluid flow cross-sectional area is step-by-step decreased, and the flow speed is step-by-step increased to form a jet effect to accelerate the fluid, and finally the fluid enters the gradually widened micro-channel (4) at a higher flow speed to realize flow heat exchange. The step variable pressure structure with the step-by-step increased number of elliptical cylinders, the step-by-step decreased length of the short axis and the step-by-step decreased total flow cross-sectional area at the micro-channel inlet section can rapidly and gradiently increase the pressure to accelerate the fluid, and effectively solve the problems of excessive and concentrated pressure at the micro-channel inlet.

The application provides a self-cooling air-breathing radio frequency plasma electric thruster, which comprises an air inlet channel, an ionization chamber and a nozzle, the air inlet channel is divided into a main air inlet channel and a secondary air inlet channel, the main air inlet channel is communicated with the ionization chamber, a cooling flow channel is arranged on the periphery of the ionization chamber, the secondary air inlet channel is communicated with a gas guide channel, the gas guide channel is communicated with the cooling flow channel through a cooling flow channel inlet, and the cooling flow channel is communicated with the ionization chamber through a cooling flow channel outlet; the gas taken by the main air inlet channel directly enters the ionization chamber to be ionized, the gas taken by the secondary air inlet channel is guided to the cooling flow channel inlet through the gas guide channel, enters the cooling flow channel through the cooling flow channel inlet, cools the ionization chamber, and then enters the ionization chamber through the cooling flow channel outlet to be ionized, and the two gas flows entering the ionization chamber are accelerated through the nozzle after being ionized, so that the thruster generates thrust. The cooling design provided by the application has the advantages of simple structure and high energy utilization rate.

Electronic power module, comprising a housing (2) with a carrier circuit board (4) which is arranged therein and on which a plurality of electronic power components (20) are arranged in a first group and a plurality of capacitors (21) are arranged in a second group and at least two connections (22) are provided adjacent to each other, and comprising a cooling plate (8) which, by way of a first side (9), is arranged in thermal contact with the carrier circuit board (4), wherein the cooling plate (8) has, on a second side (10) situated opposite the first side (9), channel projections (11) which bear against the housing (2) and via which a cooling channel (12) is defined between the cooling plate (8) and the housing (2), a coolant (26) supplied via a channel inlet (18) and discharged via a channel outlet (19) being guidable through the cooling channel, wherein the channel (12) has a first channel section (23) which extends adjacent to the first group comprising the power components (20) and which has a first channel cross-sectional area, this first channel section (23) having an adjoining meanderingly guided second channel section (24) which extends adjacent to the second group comprising the capacitors (21) and adjacent to the connections (22) and has a second channel cross-sectional area which is smaller than the first channel cross-sectional area.

A vector air outlet for a ventilation system for a motor vehicle, including an air outlet housing through which an air channel having a channel inlet and a channel outlet is formed. A horizontally formed channel partition wall divides the air channel into a first subchannel and a second subchannel. A control valve arranged upstream from the channel partition wall in the flow direction, is pivotable around a first pivot axis formed transversely to the flow direction. A plurality of deflecting louvers are arranged in the first subchannel and the second subchannel and are held on the air outlet housing pivotable around a second pivot axis formed transversely to the first pivot axis in the flow direction. The deflecting louvers have a longitudinal extension in the flow direction from a louver head region via a louver intermediate region to a louver foot region.

This application provides a detergent dispensing component, a liquid inlet system, and a fabric treatment device, belonging to the technical field of washing equipment. In this application, a mixing channel is provided within the detergent dispensing component, and a mixing section is provided between the channel inlet and the channel outlet. The mixing section is configured as a first water path and a second water path connected in parallel between the channel inlet and the channel outlet. The first water path and the second water path are split at the channel inlet side and converge at the channel outlet side. Simultaneously, the outlet side of at least one of the first and second water paths is configured with a curved structure. Thus, when the water flows from the two parallel water paths converge, a convection impact effect is generated, thereby slowing down the flow velocity of the water in the two water paths and extending the mixing time of the detergent and washing water in the water path, allowing sufficient time for the detergent and washing water to mix thoroughly.

The embodiment of the invention provides a motor and a motor cooling system, relates to the technical field of motors, and mainly aims to improve the heat dissipation and cooling capability of the motor. The motor comprises a first magnetic assembly and a second magnetic assembly. The first magnetic assembly comprises a coil winding, a coil frame and a cooling flow channel. A cavity is formed in the coil frame, the coil winding is located in the cavity and fixedly connected with the coil frame, and a gap between the surface of the coil winding and the inner surface of the cavity forms a cooling flow channel, so that after a cooling medium is introduced into the cooling flow channel, the cooling medium can directly make contact with the surface of the coil winding, and the convection heat dissipation effect is achieved. The cavity wall of the coil frame is also internally provided with a flow channel inlet and a flow channel outlet, and the flow channel inlet and the flow channel outlet are respectively communicated with the cooling flow channel, so that the cooling medium can circularly flow in the cooling flow channel, and the circulating heat dissipation of the coil winding is realized. The motor provided by the embodiment of the invention directly dissipates heat of the coil winding, and has the advantages of high integration level, low pollution and high efficiency.

The present invention relates to the field of cooling channels for metal cutting internally cooled tools, and more particularly to a composite spiral variable-diameter cooling channel structure and a metal cutting internally cooled tool. The composite spiral variable-diameter cooling channel structure is composed of a variable-diameter acceleration section channel, a composite spiral section channel, a transition section channel, and a trumpet outlet section channel, in sequence from the cooling channel inlet to the cooling channel outlet. Coolant flows from the cooling channel inlet into the variable-diameter acceleration section channel, and L>3D is satisfied; wherein L is the total axial projection length of the cooling channel from the cooling channel inlet to the cooling channel outlet, and D is the cutting diameter of the tool, with a value range of D from 3 mm to 40 mm. The composite spiral variable-diameter cooling channel provided by the present invention achieves a 25% to 35% increase in fluid flow rate while fully retaining the fluid kinetic energy of the coolant through its uniquely structured segmented channels, thereby improving the cooling effect by approximately 30%.

This invention discloses a novel cryogenic natural gas cold storage tank and its operating method. The tank includes an outer tank body with an upper end cover and a lower end cover installed at its upper and lower ends, respectively. Both the upper and lower end covers have sealed arc-shaped finned fluidized bed units on their inner sides, and multiple stacked ordinary straight-finned fluidized bed units are arranged between two sealed arc-shaped finned fluidized bed units. The upper end cover has a flow channel outlet, and the lower end cover has a flow channel inlet. The flow channel inlet and outlet are interconnected through the sealed arc-shaped finned fluidized bed units and the ordinary straight-finned fluidized bed units. This device has a compact structure, high cold energy utilization rate, and can adapt to different cold energy storage needs. It has excellent cold insulation and heat preservation effects and is not prone to flow channel blockage. It features modular mass production, intelligent monitoring, and automatic early warning functions, making it suitable for scenarios such as chemical industry, energy storage and transportation, and cold chain logistics that require cryogenic natural gas cold energy recovery and storage. It is expected to reduce cold energy loss and equipment operation and maintenance costs.

The present invention relates to a three-dimensional vertical power supply structure integrated with micro-channels, and a manufacturing method therefor. The structure comprises: a first silicon wafer; a gate driving layer; a first redistribution layer; a first bonding protection layer; a second silicon wafer; a power transistor layer; a second redistribution layer; a second bonding protection layer; a first micro-channel; a second micro-channel, wherein the first micro-channel and the second micro-channel are interconnected, and inflow and outflow of a coolant are achieved by means of a micro-channel inlet and a micro-channel outlet; a first through-silicon via; and a second through-silicon via, wherein the gate driving layer and the power transistor layer are electrically connected by means of the first through-silicon via and the second through-silicon via. In the three-dimensional vertical power supply structure integrated with micro-channels provided by the present invention, using through-silicon vias for vertical interconnection and power delivery between the gate driving layer and the power transistor layer can significantly improve the power efficiency, and integrating the micro-channels into the power supply structure allows for rapid heat dissipation of the power supply structure.

The invention belongs to the field of aero-engine fan and air compressor pneumatic design, and discloses a fan blade grid pneumatic design method based on a Bezier suction surface superposition channel. The pneumatic design method for the fan blade grid comprises the steps of determining geometric parameters of the blade grid; calculating suction surface inlet and outlet angles; defining the axial length of the suction surface; setting a dimensionless suction surface control point; calculating the minimum included angle and the maximum included angle of the dimensional suction surface control points; calculating a dimensional suction surface control point; dimensional suction surface control points are drawn; calculating curve coordinates of the suction surface; calculating a blade grid channel pitch; calculating the inlet width of a cascade channel; calculating the outlet width of a cascade channel; calculating a cascade channel width distribution rule; generating a pressure surface front section curve; generating a pressure surface rear section curve; and completing the two-dimensional cascade design. According to the pneumatic design method for the fan blade grid, the blade profile suction surface curve change rule and the blade grid channel size change rule can be directly regulated and controlled, regulation and control are direct and effective, the design convenience is high, and the practical engineering value is achieved.

The invention belongs to a new energy automobile chassis battery arrangement structure in the technical field of new energy automobiles. A plurality of cavities (2) are arranged on the chassis body (1), a battery module (3) is arranged in each cavity (2), a cooling channel (4) is arranged in the chassis body (1), the cooling channel (4) is filled with liquid metal, a cover plate (10) is arranged at the opening position of each cavity (2), and a solid phase change material block (7) is arranged at the position, attached to the inner surface of the cover plate (10), of the inner wall of each cavity (2). A channel inlet (5) of the cooling channel (4) is communicated with a cooling inlet of the radiator, a cooling outlet of the radiator is communicated with a cooling inlet of the channel outlet (6), and a pumping pump (9) is arranged on the cooling channel (4). The new energy automobile chassis battery arrangement structure can effectively solve the problems of low structure efficiency, passive thermal management, poor maintainability and thermal runaway diffusion on the premise of meeting battery module arrangement.

The methods and systems described herein are directed to a reagent delivery system for delivering multiple reagents from a microwell array to a reaction channel with reduced voids or bubbles, or for removing cells not trapped in a hydrogel cage. In some embodiments, the reagents are moved through the channel by a pump attached to the channel outlet and a pressure column applied to the channel inlet.

The invention relates to the technical field of fire pump station flow channels, and discloses a bionic anti-corrosion anti-crack fluid induction self-adjusting structure of a fire pump station flow channel, which comprises a flow channel body with a straight line part and a bent part, and a flow channel inlet and a flow channel outlet respectively positioned at two ends of the flow channel body, and a reducing part is arranged between the flow channel outlet and the flow channel body. The bionic anti-drag layer is laid on the inner wall of the straight line part of the runner body; and the flexible self-adaptive layers are laid at the flow channel inlet, the flow channel outlet and the inner wall of the bent part, and the flexible self-adaptive layers are connected with the adjacent bionic anti-drag layers. Fluid parameters are collected in real time through the sensor matrix, the AI-CFD coupling algorithm of the central control unit is combined, the shape memory alloy spring and the micro hydraulic driver are driven, the surface appearance and the flow channel sectional area of the flexible self-adaptive layer are dynamically adjusted, and the core problem that a fixed flow channel is difficult to adapt to working condition fluctuation is solved.

The utility model discloses a liquid batcher convenient to add auxiliary materials, which relates to the technical field of liquid quantification, and comprises a storage tank and a driving component, a bottle plug is fixed at a tank opening of the storage tank, a quantification cylinder with scales is arranged at the top of the bottle plug, a cylinder opening of the quantification cylinder is fixed with the outer side of the top of the bottle plug, and a liquid inlet pipe and a liquid outlet pipe are fixedly arranged in the bottle plug. The two ends of the liquid inlet pipe are located in the storage tank and the quantitative cylinder respectively, one end of the liquid outlet pipe is located in the quantitative cylinder, the other end of the liquid outlet pipe is communicated with the outside, the middle sections of the liquid inlet pipe and the liquid outlet pipe are communicated with fixing pipes, the fixing pipes are fixedly arranged in the bottle plug, channels are formed in the fixing pipes, plugging balls are arranged in the fixing pipes, and extrusion assemblies are arranged in the fixing pipes. When liquid is sucked into the quantitative cylinder from the storage tank, the blocking bead in the liquid inlet pipe leaves the channel inlet, the blocking bead in the liquid outlet pipe blocks the channel inlet, and it is guaranteed that when the liquid in the liquid inlet pipe normally flows into the quantitative cylinder, the liquid in the liquid outlet pipe is prevented from flowing back into the quantitative cylinder.

The utility model discloses a heat dissipation structure and a high light intensity obstruction light, and relates to the obstruction light heat dissipation technical field, the heat dissipation structure comprises a first heat dissipation mechanism, a guide mechanism and a second heat dissipation mechanism, the first heat dissipation mechanism is arranged on the outer wall of the obstruction light at intervals, and the guide mechanism is arranged on the side of the first heat dissipation mechanism; the second heat dissipation mechanisms are arranged between the adjacent first heat dissipation mechanisms. The first heat dissipation mechanism is of a fin structure, through cooperation of the guide mechanism, an air flow channel formed by the guide mechanism and the first heat dissipation mechanism is thinned from a flow channel inlet to the middle of the flow channel, air can enter the first heat dissipation mechanism through the guide mechanism, the air flow speed is increased, and the heat dissipation efficiency is improved. Therefore, the heat dissipation speed of the first heat dissipation mechanism is increased, and meanwhile, through cooperation of the second heat dissipation mechanism, the heat dissipation effect of the obstruction light is further improved.

The invention relates to a rotary valve (10) for adjusting the flow rate of a gravity-driven flow (12) of a pourable material (14, 14'), in particular a pourable CO2 separation agent (14, 14') in a CO2 separation device (10) for separating CO2 from a supplied air flow (40). The rotary valve (10) has a rotatably mounted valve element (22) with a through-channel which forms, between a channel inlet (28) and a channel outlet (30), a maximum passage angle (32) relative to a horizontal plane (34) for the gravity-driven flow (12) of the pourable material (14, 14'), said maximum passage angle (32) being variably adjustable by rotating the valve element (22), and thus the through-channel (26), relative to the horizontal plane (34) in order to adjust the flow rate of the gravity-driven flow (12) of the pourable material (14, 14').

The invention discloses a laminar flow micro-fluidic chip and method for detecting spatial heterogeneous drug distribution influence, the chip comprises a fluid layer and a control layer, the fluid layer comprises a first main inlet and a second main inlet, the fluid layer further comprises a plurality of independent cell culture chambers of an array, the control layer comprises a control valve inlet and a pneumatic valve array, and the control valve inlet is communicated with the pneumatic valve array. The independent cell culture chamber is composed of a concave cavity, the independent cell culture chamber is provided with two semicircular enclosures, a first channel inlet and a second channel inlet are formed in the independent cell culture chamber, and peristaltic pump subunits are arranged on the first channel inlet and the second channel inlet. Laminar flow control is achieved by integrating the pneumatic valve and the peristaltic pump, and chemical gradient generation and cell response monitoring of micron-sized spatial resolution are achieved through automatic control.

The invention discloses a low-friction efficient conveying slide way device for bottle caps. The low-friction efficient conveying slide way device comprises a rack assembly, a rolling assembly and an air source assembly. The rack assembly comprises a rack base, a rack top cover, an inlet flange and an outlet flange; a conveying channel is formed between the rack base and the rack top cover; an inlet connecting channel is formed between the inlet flange and the rack base; the top of the inlet flange is connected with a main gas source pipeline, a main gas source channel is formed in the main gas source pipeline, one end of the main gas source channel forms a gas source connector, and the other end of the main gas source channel is communicated with the inlet connecting channel. An outlet connecting channel is formed between the outlet flange and the rack base, a bottle cap outlet is formed at one end of the outlet connecting channel, and the other end is communicated with the conveying channel; the rolling assembly is arranged at the bottom of the conveying channel; the gas source assembly comprises a gas supply pipeline and a gas supply device, and the gas supply pipeline is connected with the gas source connector and the gas supply device. According to the bottle cap conveying device, friction loss of bottle caps in the conveying process can be reduced, and the purpose of conveying the bottle caps at high speed and low loss is achieved.

The invention provides a group breeding feeding station which comprises a feeding unit comprising an ear tag recognizer; the ingestion channel comprises a channel connecting end and a channel inlet end, and the channel connecting end is communicated with the feeding unit so that the fed animals located in the ingestion channel can ingest the feed in the feeding unit; the automatic door unit comprises a telescopic assembly and an access door which are connected with each other, the telescopic assembly is electrically connected with the ear tag recognizer, and the telescopic assembly is used for contracting when the ear tag recognizer recognizes the ear tag of the fed animal so as to drive the access door to be closed. The telescopic assembly is used for keeping stretching when the ear tag recognizer does not recognize the ear tag of the fed animal, so that the channel door is opened by the fed animal. According to the invention, the feeding precision of the fed animals and the adaptability to the feeding station can be improved.

The device for producing corrugated plastic pipes comprises an extruder (1) with a die head (2), and a corrugator (3) with mold jaws (10) running in pairs. In order to form the pipe, the plastic melt tube is introduced into the molding section (55). In the region of the inner mold surface (200), the mold jaws are subjected to vacuum by a vacuum device (50) through vacuum channels, which are formed in a section of the mold jaws delimited by a parting surface (100) and cooperate with channel inlets on the outer side. In the section delimited by the rear side of the mold jaws, coolant channels (40) are formed which form a net-type and / or grid-type structure composed of sections connected to one another in a zigzag and / or serpentine.