994 results about "Flow divider" patented technology

The utility model relates to the technical field of heat pump rectification, and particularly discloses a heat pump rectification system which comprises a rectification tower; the tower top gas liquefaction system comprises a compressor connected with a gas phase at the top of the rectifying tower, and a reboiler, a throttling device, a condenser and a flow divider which are sequentially connected with the compressor; liquid phase connection at the bottom of the rectifying tower is communicated with the reboiler, the tower bottom reboiling system comprises an auxiliary reboiler and a flash evaporator which are sequentially communicated with the reboiler, and the flash evaporator is communicated to the rectifying tower; and the gas phase at the top of the rectifying tower is heated by the compressor and then enters the reboiler to exchange heat with the liquid phase at the bottom of the rectifying tower, so that the rectifying energy consumption can be reduced, and the energy-saving effect is achieved.

The invention discloses a two-section compression type transcritical carbon dioxide heat pump system and a control method thereof. An outlet of a second compressor sequentially passes through a high-temperature heat exchanger and a flow divider and then is divided into two paths; wherein one path is communicated with an inlet of a first expansion machine through a heat flow stream inlet valve of the first heat regenerator, the hot side of the first heat regenerator and the hot side of the second heat regenerator, and the other path is communicated with an inlet of a second expansion machine through a heat flow stream inlet valve of the third heat regenerator and the hot side of the third heat regenerator in sequence; the outlet of the second expansion machine is communicated with the inlet of the mixer through the cold side of the second heat regenerator, the cold stream inlet valve of the first heat regenerator and the cold side of the second heat regenerator in sequence; an outlet of the first expansion machine communicates with an inlet of the mixer through the low-temperature heat exchanger, a cold stream inlet valve of the third heat regenerator, the cold side of the third heat regenerator and the first compressor, an outlet of the mixer communicates with an inlet of the second compressor, and the comprehensive energy efficiency of the carbon dioxide heat pump system can be improved.

The invention relates to an array type underwater propeller with high maneuverability and low energy consumption, a pump jet generating device and a flow divider jointly form a propeller front end, an intelligent fluid director forms a propeller rear end, and the pump jet generating device drives an impeller through a rotating motor to drive surrounding water flow to rotate to generate a main jet flow; an isolation structure is arranged in the flow divider and used for evenly dividing the main jet flow into multiple strands of independent sub jet flows, and all the sub jet flows form propelling power after entering the intelligent flow guider to be guided. The intelligent fluid directors are connected with the flow channels of the flow divider in a one-to-one correspondence mode and used for converting fluid flowing out of the flow divider and out of the jet flow face into effective action jet flow with the adjustable flow speed. The intelligent fluid director comprises a jet flow end regulation and control mechanism and a pressure relief end regulation and control mechanism, and the jet flow end regulation and control mechanism is used for independently regulating the flow speed of effective jet flow ejected from the fluid director; and the pressure relief end regulation and control mechanism is used for maintaining the constant flow velocity at the inlet of the fluid director by releasing part of water flow when the effective jet flow velocity is regulated.

The invention relates to the technical field of aero-engines, and particularly provides a variable cycle engine duct experiment system and experiment method. A variable cycle engine duct experiment system comprises: a first combined experiment member comprising a main flow valve and a shunt ring; the second combined experiment piece comprises a first outer culvert, a second outer culvert and an ejector; the inlet of the variable capacitor second external culvert experiment piece is connected with the external culvert outlet of the shunt ring, and the outlet is connected with the second external culvert; an inlet of the first gas collection tank is communicated with an inner culvert outlet of the shunting ring; the bypass ratio adjusting valve is used for adjusting the bypass ratio at the shunting ring; an inlet of the second gas collection tank is connected with an outlet of the first gas collection tank through an inner culvert pressurization simulator, and an outlet is communicated with the first outer culvert; an inlet of the variable capacitor confluence duct experiment piece is communicated with the second outer duct; and the outer culvert throttle valve is connected with an outlet of the variable capacitor confluence culvert experiment piece. According to the technical scheme, engine duct experiments in multiple modes can be achieved, and the experiment efficiency is improved.

The utility model relates to the technical field of glass fiber felt production, in particular to a uniform laying device for glass fiber felt production, which comprises a base, a wire drawing machine is arranged at the top of the base, a fiber discharge port is arranged at the bottom of the wire drawing machine, and an agent spraying component is arranged at the top of the base and positioned on one side of the wire drawing machine. A shaping assembly is arranged at the position, located on one side of the agent spraying assembly, of the top of the base, an adhesive in a storage box is sucked into a connecting pipe through a water pump and reaches a flow divider through the connecting pipe, and then the adhesive is evenly sprayed to glass fibers through a plurality of spraying heads at the bottom of the flow divider; the adhesive in the storage box is stirred through the stirring mechanism, so that the adhesive is fully mixed, the adhesive is prevented from sinking to the bottom, manual spraying is not needed, the cohesiveness of fibers cannot be affected, meanwhile, the labor intensity of workers is reduced, and the working efficiency is improved.

The invention discloses a supercharged SOFC / GT combined cycle system and a starting method, and relates to an SOFC / GT combined cycle system and a starting method. The invention aims to solve the problem that the requirements of short starting time and high energy utilization rate cannot be met in the prior art. The system comprises a gas compressor, the gas compressor is coaxially connected with a turbine and a permanent magnet synchronous motor, an outlet of the gas compressor is connected with an inlet of a first flow divider, one outlet of the first flow divider is connected with a first battery assembly, and the other outlet of the first flow divider is connected with an inlet of a second flow divider; one outlet of the second shunt is connected with a heat exchanger assembly, the other outlet of the second shunt is connected with a combustion chamber, an outlet of the combustion chamber is connected with a turbine, an outlet of the turbine is connected with a heat exchange assembly, the heat exchange assembly is connected with the combustion chamber, the permanent magnet synchronous motor is connected with a power grid bus, and the power grid bus is connected with a second battery assembly. The first battery assembly is connected with the power grid bus. The invention belongs to the technical field of energy power equipment.

The invention provides a deepwater semi-submersible drilling platform pressure control drilling MPD control system which comprises a platform rotary table face. A platform wellhead flow divider, a marine riser expansion joint, a marine riser tension ring, a marine riser rotation control pup joint, an MPD hydraulic control pup joint, an MPD marine riser annulus sealing device, a marine riser four-way joint, a drilling marine riser, an underwater blowout preventer set and a seabed underwater wellhead are sequentially connected to the platform rotary table face from top to bottom. The MPD hydraulic control pup joint is connected with a rotary control pup joint power unit through an umbilical cable I, an umbilical cable roller frame I and a cable hose, and the rotary control pup joint power unit is connected with a deepwater MPD electro-hydraulic control system main control station; the MPD marine riser annulus sealing device is connected with the annulus sealing device and the buffer manifold hydraulic power unit through an umbilical cable II, an umbilical cable roller frame II and a cable hose and is connected with the deepwater MPD electro-hydraulic control system master control station; the throttling hydraulic power unit is connected with the deepwater MPD electro-hydraulic control system master control station. According to the system, pressure regulation and control, equipment management and operation safety guarantee in the deepwater pressure-controlled drilling well are realized.

The invention relates to the technical field of die heads for extrusion molding of plastic pipelines, in particular to a multi-layer co-extrusion pipe die head with a pre-diverter. In order to solve the problems that a traditional co-extrusion pipe die head shunting structure is integrated on a spiral body, melt retention and uneven distribution are easily caused due to limited runners and steep steering, and then deviation of the wall thickness of a pipe is caused, the scheme is provided with a die body, the spiral body containing three layers of spiral distribution runners, and a first pre-shunting device and a second pre-shunting device which are sequentially arranged in the axial direction; the first pre-diverter diverts an outer-layer melt to an outer-layer spiral distribution runner through a first annular gap runner, and the second pre-diverter diverts an inner-layer melt to an inner-layer spiral distribution runner through a second annular gap runner, and is matched with a plurality of groups of feeding channels, a diversion cone, a closed-loop heating temperature control system and a layered and integrally combined wall thickness adjusting structure; and precise shunting and stable conveying of the melt are achieved. According to the scheme, the melt retention risk is eliminated, the distribution uniformity is improved, the pipe forming quality is guaranteed, and the device is suitable for multi-specification production and convenient to maintain.

The application belongs to the technical field of magnesium alloy wheel hub forging, in particular to a magnesium alloy wheel hub forging equipment, which comprises a mechanical arm, a steering mechanism, a fixed cylinder seat, a three-way flow divider and a spray head unit. The steering mechanism is used for steering adjustment, and the fixed cylinder seat is accurately moved between the upper die and the lower die of the forming die in cooperation with the mechanical arm. The pumping mechanism on the storage tank sends the stored release agent solution into the three-way flow divider through the water inlet pipe, and then the release agent solution is sprayed onto the bonding surface of the upper die and the lower die of the forming die by the spray head unit to form a uniform release film on the inner wall of the forming cavity of the forming die. Since there is a release film between the magnesium alloy wheel hub and the forming cavity of the forming die, the adhesion between the magnesium alloy wheel hub and the forming cavity of the forming die is reduced, the scratches and scratches on the surface of the magnesium alloy wheel hub are reduced, and the processing quality and production efficiency of the magnesium alloy wheel hub are improved.

The invention relates to a cast-rolling casting nozzle with an electric-magnetic coupling oscillation effect. Relates to a cast-rolling casting nozzle with an electromagnetic oscillation effect, which is matched with a horizontal double-roller cast-rolling machine in the field of aluminum alloy die casting. The method is used for solving the inevitable internal macrosegregation defect of the high-alloy-content aluminum alloy cast-rolled product. The device comprises an L-shaped electrode pair 1; a side seal 2; an excitation device 3; a guide plate 4; a cooling water pipe (inlet / outlet) 5; a copper enameled wire (excitation) 6; a countersunk self-tapping screw 7; a casting nozzle upper plate 8; a rhombic shunting block 9; a nozzle lower plate 10; and a casting nozzle bottom plate 11. In the casting and rolling process, an oscillating electric field and a steady magnetic field are introduced, electromagnetic coupling force is generated at the outlet end of a casting nozzle, the electromagnetic force effectively stirs a semi-solid aluminum alloy melt, and therefore the purposes that alloy is evenly distributed, and segregation defects are reduced or even eliminated are achieved. The method is used in 4-series, 6-series and 7-series aluminum alloys, and the effect is obvious.

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.

The utility model belongs to the technical field of optical module heat dissipation, and discloses a liquid cooling plate and an optical module liquid cooling structure, and the liquid cooling plate comprises a diverter and a plurality of cold plate bodies. The multiple cold plate bodies are arranged at intervals in the extending direction of the confluence channel, each cold plate body comprises a movable section, a bent section and a fixed section, and the two ends of each bent section are connected with the corresponding movable section and the corresponding fixed section correspondingly; wherein the bent section comprises a first bent part capable of being bent towards the upper portion of the fixed section and a second bent part capable of being bent towards the lower portion of the fixed section, and the first bent part and the second bent part are in smooth transition. Through the arrangement of the bending section, rigid bending deformation of the liquid cooling plate is avoided, an elastic component between the liquid cooling plate and the optical module is omitted, the optical module is attached for heat dissipation and adapts to insertion and extraction of the optical module, and the heat dissipation efficiency is effectively improved.

The invention relates to the field of circuit board processing automation equipment, and discloses a circuit board chip mounter and a dispensing mechanism, the circuit board chip mounter comprises a support, the top of the support is provided with a positioner, the exterior of the positioner is provided with a material taking device through screws, the material taking device comprises a mounting table and a positioning plate, and the top of the mounting table is provided with a pneumatic pump; a conveying pipe connected with the output end of the pneumatic pump is arranged in the mounting table, the bottom end of the conveying pipe is fixedly connected with a main flow divider, the output end of the main flow divider is fixedly connected with four secondary flow dividers, the output ends of the secondary flow dividers are fixedly connected with four material taking heads, and the multiple material taking heads are mounted in the positioning plate; the material taking head comprises a fixed box fixedly mounted at the top of the positioning plate and a movable shell slidably connected into the positioning plate. According to the device and the method, the glue is synchronously blow-dried while the surface mounting operation is completed, an additional drying station is not needed, and the influence of vibration and temperature and humidity environment changes on the surface mounting stability of the component in the conveying process is avoided.

The invention discloses a two-stage rotational flow hydrogen fuel nozzle and a combustion chamber thereof. The nozzle comprises a main hydrogen flow path, an auxiliary hydrogen flow path and an air flow path; the hydrogen main flow path is provided with a plurality of main spray holes which are distributed in a circumferential array; the air flow path is provided with a two-stage cyclone; the hydrogen auxiliary flow path comprises a hollow annular flow divider, the flow divider is coaxially arranged around the periphery of the hydrogen main flow path, and a plurality of injection holes are formed in the inner wall and the outer wall of the flow divider and communicated with the first-stage rotational flow channel and the second-stage rotational flow channel respectively. In the using process, efficient mixing of fuel and air is achieved through the synergistic effect of graded injection of main and auxiliary hydrogen and two-stage rotational flow air. According to the combustion chamber provided with the nozzle, large-scale flames are decomposed into a plurality of small flames through micro-scale injection, two-stage rotational flow is combined for strengthening mixing, the backfire risk is effectively restrained, the combustion temperature is lowered, NOx emission is remarkably reduced, meanwhile, the combustion stability is improved, and a reliable solution is provided for hydrogen fuel combustion of an aero-engine.

The device for separating good and bad seeds using resonant frequencies includes several key components: a lifting unit(7) with a seed inlet, outlet, and bucket elevator to transport seeds vertically into an air tunnel(11); an air tunnel with an air blower to separate light waste from heavier seeds; a screening device(14) with holes to sort seeds based on size or shape; a divider(15) that disperses seeds using an air stream over a grooved shaft; a low-frequency wave transmitter that vibrates the seed collection; and a high-frequency wave transmitter with piezoelectric elements connected to a frequency generator and amplifier. The screening device is designed to separate seeds based on size, and the low-frequency transmitter uses a diaphragm to convert electrical signals into sound waves. The separation surface features at least two jacks for adjusting its slope, helping control the seed ejection path.

The invention discloses a hydrogen fuel SOFC actual combined cycle power generation system based on gas turbine pressurization, and belongs to the technical field of energy power equipment. In the starting stage, air is compressed by a gas compressor and then enters a combustion chamber to be combusted with hydrogen, exhausted gas is introduced into a turbine to do work, electric energy is provided for temperature rise before SOFC reaction through a motor, and turbine exhausted gas sequentially heats hydrogen and air at an inlet of the combustion chamber. Under the stable operation working condition, air sequentially passes through a gas compressor, a flow divider and a heat exchanger to be introduced into an SOFC cathode, hydrogen is heated through the heat exchanger and enters an SOFC anode to be subjected to an oxidation reaction, cathode and anode tail gas and supplemented gas enter a combustion chamber to be combusted, exhaust gas enters a turbine to do work and then is exhausted, and turbine exhaust gas sequentially heats hydrogen of SOFC anode inlet gas and air of cathode inlet gas; wherein the SOFC anode tail gas heats hydrogen supplemented by the combustion chamber through the heat exchanger, and the SOFC cathode tail gas heats air supplemented by the combustion chamber through the heat exchanger.

The invention provides a particle separator experimental device with an adjustable diverter deflection angle. The particle separator experimental device comprises a particle separator, a main channel switching section, a main channel total pressure rake, a bypass channel switching section, a bypass channel total pressure rake and a low-pressure suction table, the particle separator sucks air from the atmospheric environment, a tail end outlet is connected with a low-pressure air source through a valve, different flows required by an experiment can be matched by adjusting the opening degree of a downstream ball valve of an experiment table in the experiment process, and different working modes of the particle separator are switched by adjusting the rotating angle of the flow divider according to different incoming flow environments. The profile-adjustable particle separator experimental device is simple in principle, the structure is easy to achieve, compared with a traditional particle separator, the separation efficiency is improved, the total pressure loss is reduced, the requirements for an experimental site and an air source are low, and the design cost of the particle separator can be reduced. Therefore, on the premise that feasibility is guaranteed, a more efficient and economical air inlet protection system and an experimental device thereof are expected to be provided for a high-speed helicopter engine in the future.

The invention discloses manufacturing equipment and process of an insulating hollow plate for electronic and electric appliance packaging, and relates to the technical field of hollow plate production, the manufacturing equipment comprises a screw extruder, a hopper is arranged on the top surface of the screw extruder, a hydraulic screen exchanger is arranged at the output end of the screw extruder, and a hollow plate mold is arranged at the output end of the hydraulic screen exchanger, the hollow plate mold comprises a mold body, a dynamic flow divider is arranged on one side of the mold body, the hydraulic screen exchanger conveys molten materials to the mold body through the dynamic flow divider, and the dynamic flow divider dynamically adjusts the flow of the molten materials of the dynamic flow divider based on pressure distribution in the mold body. Through the arrangement of the dynamic flow divider, in the process that the dynamic adjusting pipe conveys the molten material to the wedge-shaped channel, the dynamic adjusting pipe can dynamically adjust the flow of the molten material entering the wedge-shaped channel according to the pressure change of the dynamic pressure channel connected with the corresponding wedge-shaped channel; the hollow plate die can extrude hollow plates with uniform thickness, and the consistency is good.

The invention is applicable to the field of wastewater treatment, and provides an intelligent treatment device for silicon carbide ceramic raw material processing wastewater, the intelligent treatment device comprises a pretreatment unit, a deep purification unit, a precision filtration unit and an intelligent control system, the precision filtration unit comprises a filtration assembly, a membrane separation assembly, a backwashing device and a diverter valve group; the filtering assembly and the membrane separation assembly respectively adopt at least two tank bodies which are arranged in parallel, and are matched with a backwashing device and a diverter valve group, so that filtering and cleaning can be realized at the same time; an ultrafiltration membrane and a reverse osmosis membrane in the membrane separation assembly adopt a roll type structure, so that the filtering efficiency can be improved; the intelligent control system can intelligently control each component to operate according to sensor data; the problems that an existing device is low in filtering efficiency and needs to be shut down for cleaning are solved, and the device has the advantages of being high in continuous operation capacity, good in filtering effect and the like.

The utility model relates to the field of plastic processing, and discloses a PVC particle cleaning device which comprises a machine body shell and a transmission shaft, the upper end of the transmission shaft is in spline connection with a conical cap, the outer surface of the conical cap is fixedly connected with a top plate, and the lower surface of the top plate is fixedly connected with a brush set with the same outer diameter as the top plate. A discharging pipe is arranged on one side of the lower surface of the machine body shell in a communicating mode, a flow divider is arranged at the lower end of the discharging pipe in a communicating mode, a sieve plate is fixedly connected to the interior of the flow divider, a discharging pipe is arranged on the surface of the flow divider in a communicating mode, and a recycling pipe is arranged on the lower surface of the flow divider in a communicating mode. According to the PVC particle cleaning machine, the brush group is arranged on the bottom surface of the machine body shell, so that materials can flow in the cleaning liquid and can also form relative sliding between the bottom surface of the machine body shell and the brush group, and the brush group is in contact with PVC particles, so that the material cleaning strength is increased, and stubborn impurities on the surfaces of the particles can be effectively removed.

The invention belongs to the technical field of industrial waste salt treatment, and discloses a solar tower type heat collection industrial waste salt organic impurity pyrolytic reaction system. Comprising a salt storage tank, a rotary flow divider, a flow dividing pipeline, a salt collecting box, a flow guide device, a gradual change type square tube reactor, a V-shaped flow guide device, a salt collecting tank, a heliostat field, a tail gas exhaust pipe, a cyclone separator, a tail gas purification device, an electric valve and the like, and a heat collection-reaction integrated semi-continuous treatment system is constructed. According to the system, a gradual change type square tube reactor and a rotary flow divider are adopted to dynamically adapt to solar Gaussian heat flow, unpowered fluidized conveying of waste salt is achieved depending on gravity driving, feeding and waste gas interference is avoided through batch filling, independent pyrolysis and reverse exhaust, stable operation under complex working conditions is guaranteed through heat flow-material dynamic adaptive regulation, and the system is suitable for large-scale industrial production. The industrial waste salt organic impurity pyrolysis, organic impurity removal and recovery and tail gas up-to-standard emission are efficiently achieved, and the method has energy conservation and environmental protection properties and is suitable for large-scale industrial waste salt harmless treatment and resource recovery.

The application relates to the technical field of heat-shrinkable tube extrusion dies, and provides a high-smoothness high-speed heat-shrinkable tube extrusion die, which comprises a die head, a shunt is connected in the die head through a support, a joint is fixedly installed at one end of the die head, a die core is installed on the shunt, a die sleeve is fixedly installed at one end of the die head away from the shunt through a tightening sleeve, first and second heaters for heating are further arranged, and the die core comprises a tapered core rod; it can be understood that the short shaping end of the 1.5mm tungsten steel shaping ring is arranged to quickly release pressure, eliminate defects such as surface drag marks and stress marks, cooperate with the mirror surface level inner hole, the core rod gradual change structure and the 12mm die core shaping end, and the inner and outer wall smoothness of the heat-shrinkable tube is greatly improved; meanwhile, the flow channel is short and the resistance is small, the extrusion speed is increased from the traditional 20 m / min to 40-50 m / min, the production efficiency is obviously improved, the flow rate is stable, the pressure is balanced, the dependence on operation experience is reduced, and the debugging time and the waste product rate are reduced.

The utility model discloses a shunt device of coriolis mass flowmeter, including body mechanism and setting in body mechanism one side, the pipe body outer wall of the pipe body that is close to flow tube and body mechanism connecting end is supported and supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported and is supported.

This invention relates to a flow-guiding heat dissipation device and a cooking appliance, which can solve the problems of high heat dissipation costs and increased failure rates in cooking appliances. The flow-guiding heat dissipation device includes: a cooling fan having an air inlet and an air outlet communicating with the air inlet; a flow divider including a mounting plate and a flow divider plate, the mounting plate having a mounting area for mounting the cooling fan, a heat dissipation area for mounting a first component to be cooled, and a flow divider hole located between the mounting area and the heat dissipation area; the flow divider plate extends obliquely from the heat dissipation area toward the air outlet to divide the air outlet into a first sub-outlet corresponding to the heat dissipation area and a second sub-outlet corresponding to the flow divider hole; and a flow guide having a flow guide groove and a flow guide hole corresponding to the second component to be cooled; the flow guide is mounted on the mounting plate to form a flow guide channel communicating with the flow divider hole and the flow guide hole between the flow guide and the mounting plate through the flow guide groove.

The present application relates to the technical field of wind-resistant stable combined bridge deck structure, and particularly relates to a novel wind-resistant stable combined bridge deck structure form and a construction method. The technical scheme comprises: a bridge deck slab, further comprising a steel box girder fixedly installed at the bottom of the bridge deck slab, a flow divider fixedly installed at the bottom of the steel box girder, a maintenance access fixedly installed on the flow divider, guide vanes fixedly installed on the flow divider and located on both sides of the maintenance access, pneumatic grating guardrails fixedly installed on the bridge deck slab, pneumatic wing plates rotatably installed on the pneumatic grating guardrails, and a central stabilizing plate cast in the center of the bridge deck slab. The structure form is particularly suitable for the bridge deck of an ultra-large-span sea-crossing bridge, can maximize the advantages of the combined structure, and has excellent wind resistance.

The utility model discloses a semiconductor transmission valve which comprises a valve body, a valve plate is vertically arranged at the bottom end in the valve body, supports are vertically arranged on the left side and the right side of the front face of the valve plate, a driving shaft is vertically and movably arranged between the supports, and the driving shaft is vertically located in the valve body. Air cylinders are vertically arranged at the two ends of the top end of the exterior of the valve body, a gas flow divider is arranged between the air cylinders, the gas flow divider is transversely located in the middle of the top end of the exterior of the valve body, the gas flow divider is connected with the air cylinders through pipelines, and pistons are transversely arranged in the air cylinders; the piston is connected with the driving shaft; and the piston and the driving shaft are in the same moving direction.

A grinding disc set comprises a movable grinding disc and a fixed grinding disc which can rotate relatively. The fixed millstone is mounted above the movable millstone, and an adjustable grinding gap exists between the movable millstone and the fixed millstone; a cover plate for suspending the fixed millstone is arranged on the fixed millstone, and an adjusting assembly for adjusting the height of the fixed millstone is arranged on the cover plate; a water cooling flow path for performing constant-temperature control on the movable millstone is formed on the movable millstone, and a water flow divider for supplying water and discharging water to the water cooling flow path is mounted at the bottom of the movable millstone; compared with the prior art, the fixed millstone is installed on the movable millstone, rotation control is conducted on the movable millstone, and height control is conducted on the fixed millstone, so that a grinding gap always exists between the fixed millstone and the movable millstone, and the fixed millstone and the movable millstone are only in contact with materials in the relative rotation process; mutual abrasion between the fixed millstone and the movable millstone is reduced, abrasion loss of the fixed millstone and the movable millstone is reduced, and heat production of the fixed millstone and the movable millstone is also reduced.

The application relates to the technical field of die-casting production and manufacturing of metal parts, and particularly relates to a high-precision magnesium alloy die-casting die device. The device comprises a die mechanism, the die mechanism comprising a first die assembly, a second die assembly and a feeding mechanism, the first die assembly and the second die assembly being provided with a plurality of accommodation openings on the circumferential side, the accommodation openings being provided with liquid runners and cavities, the feeding mechanism comprising a feeding cylinder and a flow divider; a core, the core being located in the cavity during die closing; a core pulling assembly, the core pulling assembly being arranged in correspondence with the core; a overflow system, the overflow system comprising an overflow tank, an exhaust passage and an exhaust mechanism; the liquid runner comprising a first liquid runner and a second liquid runner, the first liquid runner being connected with a tail cavity of the metal part, and the second liquid runner being connected with a head cavity of the metal part. The die-casting metal part of the die device has high density and good surface finish, meets the application scenarios with high quality requirements, and can achieve the super-lightweight target in the low-altitude economic field, such as eVTOL, unmanned aerial vehicles and other aircrafts.

To provide a flow divider for cooling capable of improving flow dividing uniformity.SOLUTION: And a liquid feeding pipe including a main body portion 21 having an inside diameter and a wall thickness that are substantially unchanged, and a narrowed portion 22 located downstream of the main body portion 21 and having an inside diameter smaller than an outside diameter D0 of the main body portion 21. The minimum inside diameter D1 of the throttling portion 22 and the outside diameter D0 of the main body portion 21 satisfy 0. 45D0 ≤ D1 ≤ 0. 95D0, the lumen cross-sectional area S2 at the opening of the mixing chamber 106 is greater than the flow cross-sectional area S1 at the minimum inside diameter D1 of the throttling portion 22, and S2 / satisfy ( / ) min = - 1.26 * ln () + 4.572, ( / ) max = - 1.75 * ln () + 9.757. S1 S1 D0 S2 S2 D0 S1.SELECTED DRAWING: Figure 2

The present invention provides an integrated liquid cooling and heat dissipation device in which the liquid flows uniformly through the liquid heat dissipation tubes, and the flow velocity is not too high. [Solution] The integrated liquid cooling heat dissipation device according to the present invention includes a liquid cooling train 100 and a liquid cooling head 200. The liquid cooling train 100 includes a first liquid box 10, a second liquid box 20, and a heat dissipation tube assembly 30 connected between the first liquid box 10 and the second liquid box 20. The liquid cooling head 200 is connected to the first liquid box 10 and is used for bonding processors. A low-temperature liquid chamber 14 and a high-temperature liquid chamber 15 are formed inside the first liquid box 10 of the liquid cooling train 100, and a flow divider plate 16 is provided inside the low-temperature liquid chamber 14. The flow divider plate 16 has a plurality of through holes 164 on both sides.