159 results about "Channel inlet" patented technology

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 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 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.

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.

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 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 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.

The invention provides a double-refrigeration-mode cold cone structure which plays a role in eliminating tail flames, improves the heat dissipation effect at the same time, and can prevent a sample from entering the interior of a cold cone and reduce pollution of a cone opening through air cooling and reverse blowing modes. The heat dissipation structure comprises a heat dissipation block, the center area of the heat dissipation block is concaved inwards to form a cold cone installation cavity, the periphery, corresponding to the cold cone installation cavity, of the heat dissipation block is provided with heat dissipation water ways which are annularly distributed, the heat dissipation block is provided with channel inlets and channel outlets corresponding to the heat dissipation water ways, and an air inlet channel is further formed in the thickness direction of the heat dissipation block; the tail flame cutting cone comprises a cutting cone part and a heat dissipation block connecting part, a plurality of vent holes are annularly distributed in the outer circumference of the upper portion of the heat dissipation block connecting part, and the vent holes are communicated with an inner cavity of the heat dissipation block connecting part; and a perspective window.

A vertical heat exchanger comprises a shell, an upper tube box and a lower tube box. An upper condensed fluid inlet and a lower condensed fluid outlet are respectively formed in the shell, and a spiral wound tube bundle is arranged in the shell. The spiral wound tube bundle is composed of multiple layers of spiral wound tubes, and the spiral directions of the adjacent layers are opposite. And each layer of spiral wound tube forms a tube pass flow channel. The tube pass flow channel is provided with a flow channel outlet formed by the upper free flexible tube end and a flow channel inlet formed by the lower free flexible tube end. And the upper tube box and the lower tube box are detachably fixed with the shell respectively. A fluid seal is formed between the housing and each channel to prevent condensed fluid from entering the corresponding channel from the housing. A tube plate is arranged in each tube box, and the upper free flexible tube end of each layer of spiral wound tube is fixed on the upper tube plate and is opened in the corresponding tube box. And the upper tube box and the lower tube box are respectively provided with a boiling medium outlet and a boiling medium inlet. The vertical heat exchanger is high in heat exchange efficiency, not prone to scaling and simple and firm in structure.

The invention is directed to a cell avidity analysis cassette (1). The cassette comprises a sample holder (2), preferably a sample holder in the form of a sample plate (20). The sample holder (2) comprises at least a first flow channel (51) extending between a first channel inlet (51A) and a first channel outlet (51B). The cassette (1) further comprises a casing (3) for holding the sample holder (2) therewithin. The cassette (1) is arranged to hold the sample holder (2) in a substantially hermetically sealed manner within the casing (3). Preferably, said casing (3) can be arranged to be substantially hermetically sealed and / or the cassette (1) can be arranged to provide one or multiple substantially hermetical sealings between the casing (3) and the sample holder (2). Further, the casing (3) is arranged to be opened, for instance to enable temporarily removing the sample holder (2) from the casing (3) and / or to enable putting the sample holder (2) back into the casing (3). Furthermore, the casing (3) is arranged to be closed again, in particular in a manner such that the cassette (1) holds the sample holder (2) in the substantially hermetically sealed manner within the casing (3).

The embodiment of the invention discloses a visual nanoneedle transfection micro-fluidic chip, a preparation method and a cell transfection method.The micro-fluidic chip comprises a patterned glass nanoneedle substrate and a transparent PDMS micro-channel layer, the transparent PDMS micro-channel layer is bonded to the patterned glass nanoneedle substrate, and the transparent PDMS micro-channel layer is bonded to the patterned glass nanoneedle substrate. The patterned glass nanoneedle substrate and the transparent PDMS micro-channel layer jointly form a light-transmitting structure and are compatible with a fluorescent inverted microscope; wherein the surface of the patterned glass nanoneedle substrate is provided with a nanoneedle array of which the pinpoint height range is 700-1000nm and the pinpoint diameter range is 50-200nm; the transparent PDMS micro-channel is a micro-channel prepared from a high-transparency PDMS material, and the micro-channel comprises a channel main body, a channel inlet formed in one end of the channel main body and a channel outlet formed in the other end of the channel main body; wherein the height range of a flow channel in the flow channel main body is 10-25 microns, the width range of the flow channel is 10-100 microns, and a flow channel inlet is used for being connected with an external micro-flow pump.

The present application relates to dispensing equipment manufacturing technical field, especially a flow control choke valve. The valve body is provided with a shunt cavity, a mixed flow channel, an air inlet channel and a process docking flow channel; the air inlet channel is communicated with the shunt cavity; the process docking flow channel is communicated with the mixed flow channel, used for providing vacuum or normal pressure environment to the downstream; the piston is coaxially assembled in the shunt cavity; the mixed flow channel is oppositely arranged with the end surface of the piston; the control gas path is used for regulating the axial position of the piston; when the piston is at the axial limit position, the end surface and the inlet of the mixed flow channel are mutually attached, and the flow channel passage is cut off; when the piston is at the axial non-limit position, the end surface and the inlet of the mixed flow channel form a flow opening; when the axial position of the piston changes, the flow opening changes. Through the distance change between the piston end surface and the mixed flow channel inlet, a continuous variable flow opening is formed, so as to realize stepless adjustment of the gas path flow cross section, and adapt to the air pressure supply requirements of multiple types of dispensing stations.

A rotary valve (10) is proposed for adjusting the flow rate of a gravity-driven flow (12) of a bulk material (14, 14'), in particular a bulk CO2 separation agent (14, 14') in a CO2 separation device (10) for separating CO2 from a supplied air stream (40). The rotary valve (10) has a rotatably mounted valve element (22) with a through-channel which forms a maximum through-angle (32) relative to a horizontal plane (34) between a channel inlet (28) and a channel outlet (30) for the gravity-driven flow (12) of the bulk material (14, 14'), wherein the maximum through-angle (32) can be variably adjusted 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 bulk material (14, 14').

The shaped air ring for a rotary atomizer according to the invention comprises a ring-shaped arrangement of shaped air nozzles (5), each shaped air nozzle having a nozzle channel (8). The nozzle channel (8) has a channel inlet orifice (9) and a channel outlet orifice (10), wherein the channel outlet orifice (10) has an outlet orifice height (t2) and an outlet orifice width (a2). The outlet orifice width (a2) is greater than the outlet orifice height (t2).

Proposed is a refrigerant distributor (1) for a vehicle refrigeration circuit, comprising stacked and joined distributor plates (4, 5) that define refrigerant channels (10, 11) running in the plane of the layers, each refrigerant channel having a channel inlet (14, 15) and a channel outlet (16, 17) that each form an opening perpendicular to one of the distributor plates, as well as refrigerant connections at which the refrigerant distributor can be integrated into the refrigeration circuit. The distributor plates are sheet metal components, the refrigerant connections being formed by connecting pieces (2, 3) that are joined to one of the distributor plates (4) parallel to the plane of the layers and each enclose one of the openings.

The utility model provides a drying device before nitrogen compression, and belongs to the field of gas drying. The problems that a traditional drying means is high in energy consumption and low in speed, and drying agents are short in service life and large in consumption are solved. The top of the shell is provided with an air inlet end and an air outlet end, the interior of the shell is coaxially and rotatably connected with a moisture separation part, the peripheral side of the moisture separation part is integrally provided with a condensation part, the top of the moisture separation part is provided with a plurality of separation channel inlets, and a separation channel outlet of each separation channel inlet is used for guiding airflow to the inner wall of the condensation part; after air flow enters from the air inlet end, part of the air flow flows along the inlet of the separation channel, is discharged from the outlet of the separation channel and flows along the condensation part, part of the air flow flows to the condensation part along the outer wall of the moisture separation part, and all the air flow reversely flows upwards and flows away from the air outlet end after confluence; and the openings are distributed at the lowest point of the condensation part and are used for guiding condensed water into the lower part of the shell. The device is mainly used for drying before nitrogen compression.

A blower (1) for a fuel cell assembly for recirculating a volume flow occurring during the operation of the fuel cell assembly is described, wherein the blower has a blower channel (2) with an outer wall (2a) which extends along a channel axis (A) between a blower channel inlet (2b) and a blower channel outlet (2c) of the blower channel (2), a motor shaft (3) which extends through an annular channel section (2d) of the blower channel, a flow guiding means (4) which is arranged adjacently to the blower channel inlet (2b) and is configured to impart a swirl to the entering volume flow, an outlet channel (5) with an outlet channel opening (5a) which is arranged in the outer wall (2a) and through which liquid can be discharged, and a pressure equalization channel (6) which is fluidically connected to the outlet channel (5) and has a pressure equalization channel opening (6a) which is arranged in the outer wall (2a) and is spaced apart from the outlet channel opening (5a) along the channel axis (A).

The invention belongs to the technical field of drainage robot water pump application, and particularly relates to a series-parallel connection self-priming pump water inlet pipeline in-place locking device and a control method. Comprising an in-place device and a clamping device. The in-place device comprises a pipeline channel, an inlet end of which is used for placing a male joint and a mounting end of which is used for being fixed on a female joint; the fixing sleeve is arranged in the pipeline channel; the spring is arranged between the inner wall of the pipeline channel and the fixing sleeve, and the fixing sleeve has a movable state capable of overcoming the outward opening of the spring and a tightening state capable of keeping locking and keeping inward tightening under the action of the spring; according to the in-place locking device, manual pipeline assembly can be assisted, workers only need to push the joint male head into the inlet end of the pipeline channel, the manual work difficulty is lowered, and the use requirement for rapidly and efficiently carrying out rescue work under the conditions of personnel shortage and complex and severe working conditions is met.

The invention relates to a fan (1) for a fuel cell assembly for recirculating a volumetric flow which arises during operation of the fuel cell assembly, the fan comprising: an annular channel (2) having an outer wall (2a) which extends along a channel axis (A) between an annular-channel inlet (2b) and an annular-channel outlet (2c) of the annular channel; a motor shaft (3) which extends through the annular channel; a flow-guiding device (4) which is arranged adjacent to the annular-channel inlet (2b) and is designed to apply a swirl to the incoming volumetric flow; an insert body (6) for arrangement in the annular-channel outlet (2c), the insert body having a tubular portion (6a) which extends along the channel axis toward the annular-channel inlet (2b) and delimits, together with the outer wall (2a), an annular gap for discharging liquid from the annular channel (2), wherein the insert body (6) has a recess (6b), extending around the tubular portion (6a), for guiding liquid particles from the annular gap (7) to a mouth portion (6c) of the insert body (6) in order to discharge liquid particles from the insert body.

This invention discloses a ball assembly device for ball screws, applicable to continuous ball assembly production lines. It includes a rotary drive mechanism, a flow channel rod, a pusher assembly, and a control unit. The flow channel rod is positioned at the center of the nut section, with an inclined flow channel inside. The end of the flow channel connects to the inlet of the nut's circulation channel. The pusher assembly then attracts the balls and controls their movement along the flow channel. The control unit is electrically connected to the pusher assembly and the rotary drive mechanism, controlling the pusher assembly to push the balls into the circulation channel. Simultaneously, it controls the rotation of the nut section to connect the circulation channel inlet with the flow channel outlet, and after the balls enter, the two are separated. The pusher assembly maintains a seal on the flow channel outlet during this separation. This invention achieves continuous assembly and anti-backflow of the balls inside the reversing mechanism, with a high assembly success rate, good consistency, high automation, and good production line compatibility and flexibility.

A flow system is disclosed including a swimming pool and at least one flow device for generating a counterflow in the pool. The flow device includes at least one flow drive driven by at least one motor, and at least one drive channel in which a pressure difference between a drive channel inlet and a drive channel outlet can be generated by the flow drive. The drive channel inlet and drive channel outlet are arranged below a water line of the pool and the drive channel outlet is oriented to output the counterflow along a counterflow direction. The flow device, or a combination of at least two flow devices, includes at least one bypass channel having a bypass channel inlet and a bypass channel outlet. The bypass channel is at least partially spaced apart from a drive channel outer edge and is oriented substantially along the counterflow direction.