21results about How to "Uniform and stable flow" patented technology

The invention discloses a device and a method for laser crystal growth based on a seed crystal reentry method. The device comprises a furnace body and a control system, the lifting mechanism is arranged in the furnace body and is fixedly connected with the top of the furnace body; the lifting mechanism is connected with a seed crystal support, a rotating mechanism is arranged on the seed crystal support, and a torque detection device is arranged on the rotating mechanism; the seed crystal support is used for loading seed crystals; a crucible is arranged under the seed crystal, a plurality of heating units are arranged around the crucible, a rotating magnetic field generator is also arranged around the crucible, and a cooling system is arranged around the rotating magnetic field generator. According to the device and method for laser crystal growth based on the seed crystal reentry method, the eddy current phenomenon in the laser crystal growth process is effectively restrained by accurately controlling the intensity and frequency of the rotating magnetic field and optimizing magnetic field distribution.

The invention provides a layered storage material temporary storage device which is arranged below the discharging end of a feeding belt conveyor and comprises a storage cabinet, a plurality of temporary storage belt conveyors which are sequentially arranged at intervals in the vertical direction are arranged in the storage cabinet, and the temporary storage belt conveyors are used for conveying and storing materials. A material guiding channel is arranged between every two adjacent cache belt conveyors, the upper end of each material guiding channel is communicated with the discharging end of the cache belt conveyor located above the material guiding channel, and the lower end of each material guiding channel is communicated with the feeding end of the cache belt conveyor located below the material guiding channel. Damage and breakage of the tobacco leaves can be effectively reduced, and therefore the quality of the tobacco leaves is improved. The invention further provides a material storage method.

The utility model relates to the technical field of fresh air heat exchange, in particular to a small-size heat exchange fresh air machine, which has a cuboid main body, comprises a lower cover plate, an upper cover plate, a first side plate, a second side plate, a third side plate and a fourth side plate, and is divided into a heat exchange area and a power area, the device mainly comprises a fresh air inlet, a filter, a heat exchanger, an exhaust air inlet, a fresh air outlet, a fresh air fan, an exhaust fan and an exhaust air outlet. According to the small-size heat exchange fresh air machine, the lengths of the two air paths are shortened as much as possible, the occupied space of the air exchange machine can be reduced to the maximum extent, the size of the air exchange machine is obviously reduced, the occupied space of the vertically-installed air exchange machine in the air exchange machine can be reduced, the two air exchange machines are arranged on the same side of the air exchange machine, and the air exchange machine is convenient to use. The air inlets of the fans are all in the horizontal direction, so that the air resistance of the air paths is reduced, and the air flow is smoother and more uniform.

The invention relates to a method for solving fracture and core shift of a slender ceramic core of a high-temperature alloy investment casting. The method comprises the following steps: S1, structural design of the ceramic core; s2, manufacturing a ceramic core; s3, a corresponding wax mold is manufactured through wax mold manufacturing; s4, wax mold splicing and tree assembling are carried out, wherein the ceramic mold core and the casting wax mold are combined and spliced together; the spliced wax mold is bonded with an inner pouring gate and a pouring gate, and a complete pouring tree string is formed; and S5, shell making and dewaxing are conducted in a manual shell making mode, and the mold shell with the cavity is obtained. The ceramic core and the wax mold are precisely spliced, the design of a pouring system is optimized, specially designed bonding wax and a round hole structure are adopted to reduce the fracture risk of the ceramic core, and efficient manual shell making and post-treatment processes are combined, so that the precision, the surface quality and the production efficiency of a casting are remarkably improved, and the production cost is reduced. And the production flexibility and the environmental protection performance are enhanced, and the method is an important technical improvement in the field of investment casting.

The invention discloses a preparation method of a thin-wall pipe. The preparation method comprises the following steps: establishing a pipe model of a pipe mold for preparing the thin-wall pipe; simulating the flowing condition of the polymer in the pipe model by using the pipe model, and optimizing the parameters of the pipe model according to the flowing condition of the polymer in the pipe model; extruding the polymer into the pipe model by using the initial extrusion parameter for simulation, and pulling the polymer out of the pipe model by using the initial traction parameter for simulation to obtain a test pipe; optimizing the initial extrusion parameter and the initial traction parameter according to the test pipe to obtain a target extrusion parameter and a target traction parameter; and preparing the thin-wall pipe according to the target extrusion parameter, the target traction parameter and the pipe model. The parameters of the pipe model are optimized through the simulation technology, it can be ensured that the polymer flows more evenly and stably in the pipe model, and the product reliability of the prepared thin-wall pipe is improved.

The utility model discloses a fuel cell bipolar plate structure and a fuel cell, a cathode plate comprises a first gas inlet distribution area, a first reaction area and a first gas outlet distribution area which are communicated in sequence, and the first gas inlet distribution area and the first gas outlet distribution area are both differential distribution areas; and / or the anode plate comprises a second gas inlet distribution area, a second reaction area and a second gas outlet distribution area which are communicated in sequence, and the second gas inlet distribution area and the second gas outlet distribution area are both differential distribution areas; the first gas inlet distribution area and the first gas outlet distribution area on the cathode plate and / or the second gas inlet distribution area and the second gas outlet distribution area on the anode plate are differential distribution areas, so that the gas distribution uniformity can be improved; therefore, hydrogen and / or oxygen introduced into the bipolar plate structure of the battery can flow more uniformly and stably in the bipolar plate structure of the battery, and the flow resistance of gas is smaller, so that the gas conveying and reaction efficiency of the fuel battery can be improved.

The utility model discloses a kind of bread fermentation temperature and humidity control device, it is related to bread production equipment field, to solve the problem of low precision, slow response, difficult maintenance of existing equipment temperature and humidity control, device includes flow guide shell and three-way switch valve, motor, impeller and annular heating pipe are equipped in flow guide shell, rear mesh cover helps air circulation, front end protective cover with flow guide cone;Three-way switch valve is connected with air pipe, steam pipe and air pipe, gas delivery can be switched, mounting bracket and auxiliary frame with temperature and humidity sensor are arranged on the outer wall of ring, sensor feedback data to control system, automatically adjust motor speed, heating tube power and three-way valve state.The device realizes accurate and stable control of temperature and humidity, airflow is uniformly transported, and has simple structure and high degree of automation, which is suitable for large-scale production of bread.

A die head melt flow guiding device of a hollow plastic container blowing forming machine comprises a flow dividing plate melt outflow adjusting control mechanism and a melt flow dividing mechanism, and the melt flow dividing mechanism comprises a melt flow dividing device fixing plate, a melt flow dividing device and a melt leading-in connector; the splitter plate melt outflow adjusting control mechanism is arranged on the lower portion of the side, back to the front melt splitter plate, of the rear melt splitter plate, and is characterized in that the structure of the rear melt splitter plate sub-runner is the same as that of the front melt splitter plate sub-runner, and the front melt splitter plate sub-runner comprises a first material receiving runner and a second material receiving runner; when the melt leading-in connector is fixed to one side of the melt front splitter plate, one end of the first material receiving runner and one end of the second material receiving runner are jointly communicated with the melt leading-in connector, and the other end of the first material receiving runner and the other end of the second material receiving runner incline downwards, form an inverted first Y-shaped runner and an inverted second Y-shaped runner and are communicated with the die head body. The melt flow path is shortened, the die head color changing time is shortened, friction between the melt and the runner wall is relieved, shearing heat is reduced, and it is guaranteed that the melt flows evenly and smoothly.

The utility model relates to a gas burner technical field, concretely relates to a kind of guide plate for mixing, including integrally-formed center ring part and outside ring part, the outside ring part is concentrically arranged with center ring part, center ring part forms the center through-hole matched with deflector, the edge of center through-hole is provided with several deflector mouth, when mixed gas of gas and air is transported to the below of guide plate from gas extraction pipeline, from deflector mouth place to rise to the above of guide plate.The utility model optimizes the structure of guide plate, and mixed gas of guide gas extraction pipeline is guided into the mixed cavity in the above, helps to realize the uniform stable flow of gas, has promoting effect for subsequent stable combustion, to improve the efficiency of combustion, avoid deflagration and eliminate explosion.

The utility model discloses a ton bag packaging machine, and relates to the technical field of packaging equipment. The ton bag packaging machine comprises a first rack and a second rack, the top of the first rack is fixedly connected with a storage container and a fixing base, the upper surface of a fixing plate is fixedly connected with an electric push rod, the output end of the electric push rod is rotationally connected with a connecting swing rod, and the end, away from the electric push rod, of the connecting swing rod is fixedly connected with a first connecting rod; a first connecting piece and a second connecting piece are fixedly connected to the interior of the material storage container, a second connecting rod is fixedly connected to the interior of the second connecting piece, a fan-shaped gate valve is fixedly connected to the output end of the first connecting rod, and a control box is fixedly connected to the outer surface of the first rack; by means of the arc-shaped valve assembly jointly composed of the first connecting piece, the second connecting piece, the first connecting rod, the second connecting rod, the fan-shaped gate valve, the electric push rod and the connecting swing rod, accurate material control can be provided, the risks of overflowing and blocking are reduced, and the packaging efficiency and quality can be improved.

This invention provides a multifunctional bipolar membrane electrodialysis device, belonging to the technical field of electrodialysis separation equipment. The multifunctional bipolar membrane electrodialysis device includes a working chamber, a stacked membrane assembly, a brine storage tank, an acid storage tank, an alkali storage tank, an electrode liquid storage tank, and four peristaltic pumps. The four peristaltic pumps are fixed inside the working chamber, and the stacked membrane assembly is fixed at the front end of the working chamber. The left electrode chamber frame plate, acid chamber frame plate, brine chamber frame plate, alkali chamber frame plate, and right electrode chamber frame plate are all square flat plates with flow channels formed between the inlet and outlet channels. The flow channels contain horizontally staggered guide plates, each with a row of serrations on its lower surface. The horizontally staggered guide plates combined with the serrated flow disturbance structure in the flow channels force solution agitation and diffusion, prolonging the flow time of the solution within the flow channels, covering the entire membrane surface, eliminating dead zones and short-circuit flow, and significantly improving ion migration efficiency and current efficiency.

The invention relates to the technical field of environmental protection, and discloses a controllable desulfurization and dust removal device which comprises a shell, an air inlet is formed in the shell, a first connecting plate is fixedly connected to the upper surface of the shell, a second connecting plate is fixedly connected to the upper surface of the first connecting plate, and a supporting block is fixedly connected to the outer wall of the upper side of the second connecting plate; a motor is fixedly connected to the outer wall of the supporting block, a connecting column is fixedly connected to the output end of the motor, a shifting block is arranged on the outer wall of the lower side of the connecting column, a first gear is fixedly connected to the outer wall of the shifting block, and a second gear is fixedly connected to the outer wall of the shifting block. The motor rotates to drive the connecting column to rotate, the first gear rotates to drive the third gear to rotate, and the third gear rotates to drive the rotating column to rotate, so that when the sulfur content in the flue gas is suddenly increased, the rotating speed of the fan is increased, more desulfurizing agents are ensured to be in contact with the flue gas, and the stable desulfurization effect is maintained.

The utility model discloses a structure of a steelmaking tundish, which relates to the technical field of refractory materials. The structure of the steelmaking tundish includes a shell, a filtering component and an adjusting component. A stopper rod is arranged at the bottom of the shell. The filtering component is located on the shell and includes a connecting plate, a filtering plate and a clamping plate. The connecting plate is fixedly connected inside the shell, and the filtering plate is arranged on the connecting plate. The adjusting component is located inside the shell. Through the combined use of the connecting plate, the filtering plate and the clamping plate, the molten steel can be filtered, effectively removing impurities and inclusions in the molten steel, improving the purity of the molten steel, thereby improving the quality of the final steel. Moreover, the arrangement of the filtering plate facilitates the disassembly work. The easy-disassembly design enables the filtering plate to be easily cleaned and replaced during use, reducing the production stagnation caused by the blockage or damage of the filtering plate, and thus extending the service life of the tundish.

The utility model discloses a kind of coating film double-sided drying device, it is characterized by: including upper oven, lower oven and the several drying air knives being arranged between upper oven and lower oven, the cavity of the upper oven and lower oven is equipped with air inlet chamber and the bottom surface of the cavity is equipped with several air outlet holes, the air inlet chamber includes several oven air distribution plate, several air distribution holes are equipped on the oven air distribution plate, the drying air knife is divided into parallel arrangement upper air knife group and lower air knife group, the drying air knife in the upper air knife group is located above film;The drying air knife in the lower air knife group is located below film, the air inlet of the drying air knife is connected with external air source through corresponding air outlet hole, the air nozzle of the drying air knife is all towards film, and the air nozzle of the drying air knife of the upper air knife group and the air nozzle of the drying air knife of the lower air knife group are staggered arrangement, hot air in the air inlet chamber flows into air outlet hole after passing through oven air distribution plate again through the air nozzle of drying air knife and is blown to film.

The utility model provides an air supply device and a drying oven, the air supply device comprises a shell and a fluid director, and at least two adjacent air outlets are formed in the shell; the fluid director is arranged on the shell and located between the two adjacent air outlets, the fluid director extends in the air outlet direction of the air outlets, and the width of the fluid director is gradually reduced in the air outlet direction. According to the air supply device disclosed by the utility model, the flow guider is arranged at the blind area between the two adjacent air outlets, so that the flow speed of airflow in the lower middle parts of the two air outlets is increased, the airflow can smoothly and uniformly flow downwards and uniformly blow to a bottle body, and the blind area between the two adjacent air outlets is effectively eliminated; and the problem that turbulent flow is generated below the two adjacent air outlets is avoided.

The steaming and baking all-in-one machine with the steam condensing device comprises a box body and a steam box, a storage box is arranged in the box body, a plurality of sets of cooling plates are arranged in the storage box, circulation openings are formed in the cooling plates, a conveying pipe is arranged on the storage box, one end of the conveying pipe is communicated with the interior of the storage box, and the other end of the conveying pipe is communicated with the steam box. A cooling box is arranged at the lower end of the storage box, a circulation pipe is arranged at the lowest end in the storage box and communicated with the cooling box, a heat dissipation piece is arranged on the cooling box, a water storage box is arranged below the heat dissipation piece, and a cross-flow fan is arranged on one side of the water storage box; the front side and the rear side of the lower end of the box body are respectively provided with a discharge port, in the prior art, condensate water mixed with impurities is directly used in a backflow mode, follow-up food steaming is easily affected, meanwhile, the cooling and condensing effect on high-temperature steam is poor, the condensate water after condensation can be prevented from being directly used in a backflow mode, and meanwhile the steam condensing effect is improved.

The invention relates to an electrolytic cell of a fish scale-shaped pore partition gas differential discharge type bipolar plate, the electrolytic cell comprises a diaphragm arranged in the center, a cathode reaction electrode and an anode reaction electrode are respectively arranged on two sides of the diaphragm, the cathode reaction electrode is tightly attached to the fish scale-shaped pore hydrogen side bipolar plate, and the anode reaction electrode is tightly attached to the fish scale-shaped pore hydrogen side bipolar plate. The anode reaction electrode is tightly attached to the fish scale-shaped pore oxygen side bipolar plate, a gasket is further arranged between the fish scale-shaped pore hydrogen side bipolar plate and the diaphragm, the hydrogen side electrolyte inlet and the hydrogen side outlet are communicated with the main hydrogen gas chamber, and the oxygen side electrolyte inlet and the oxygen side outlet are communicated with the main oxygen gas chamber. Bubbles are quickly discharged to the side of the main gas chamber through scaly pores of the electrode plate, electrolyte flowing into the main gas chamber through the pores is reduced, the scaly pore electrode plate is in direct contact with the reaction electrode, and fluid increases shearing force and pressure on the bubbles attached to the reaction electrode plate through the reaction electrode.

The application discloses an air-laid machine for uniform netting, comprising a frame for providing a supporting installation reference; a cotton feeding unit arranged at one end of the frame for continuously outputting fiber raw materials; and a conveying netting unit arranged at the other end of the frame for providing a bearing surface for fiber netting and conveying a formed fiber net. The application divides the flow guide channel into an upper flow section, a middle flow section and a lower flow section, and sets a fiber guide component in the middle flow section to form a multi-stage continuous fiber guide channel. When the mixed fiber raw materials flow along the flow guide channel, the fiber guide channel can first guide and converge part of the layered fiber raw materials, and then perform secondary deviation correction on the outflow part of the layered fiber raw materials, so that full coverage and continuous guidance mixing of the layered fiber raw materials are realized. Meanwhile, the staggered interval type channel structure of the fiber guide channel will not block the airflow, can effectively avoid the retention, wall-hanging accumulation and channel blockage of the fiber raw materials, and continuously ensures the uniform and stable flow of the fiber airflow.

The utility model discloses a cyclopentadiene dimerization reactor which comprises a thermal dimerization reaction tank body, the bottom of the thermal dimerization reaction tank body is communicated with a feeding pipe, the top of the thermal dimerization reaction tank body is communicated with a discharging pipe, and a plurality of distributors are installed in the middle of the inner wall of the thermal dimerization reaction tank body. The distributor comprises a fixed ring, two vertical plates fixedly connected to the inner side of the fixed ring and two transverse plates fixedly connected to the inner side of the fixed ring, and an energy utilization mechanism is mounted on the outer side of the thermal dimerization reaction tank body; the energy utilization mechanism comprises an annular water storage jacket, a fixed box connected to the bottom of one side of the annular water storage jacket and a water pump installed in the fixed box, and a middle groove is formed in the inner side of the annular water storage jacket. Therefore, the thermal dimerization effect can be better improved, the conversion rate of the reactor is improved, and the economic benefit of the device is improved.

The invention discloses an injection molding device based on powder metallurgy material processing and forming and an injection molding method of the injection molding device, and relates to the technical field of powder metallurgy material processing and forming. The injection molding device comprises a lathe bed, a mold assembly, a glue inlet runner, a cooling assembly, an exhaust groove and an ejection assembly; the movable mold assembly and the fixed mold assembly are closed to form a cavity; the glue inlet runner is arranged on the fixed mold assembly and communicates with the mold cavity, the cooling assembly is arranged on the movable mold assembly, the cooling assembly is arranged around the mold cavity, and the cooling assembly is used for cooling and shaping formed in the mold cavity; the exhaust groove is formed in the mold assembly and used for exhausting volatile gas generated in the filling process of the powder adhesive. The ejection assembly is arranged on the movable mold assembly, and the ejection assembly is used for pushing out or separating a formed part from the cavity; the problems of unstable forming quality, low cooling efficiency, incomplete exhaust and the like of the powder metallurgy material in the machining and forming process can be effectively solved.