38results about How to "Improve flow characteristics" patented technology

The invention discloses an anti-surge low-noise fan blade capable of adjusting the blade angle, and relates to the technical field of wind turbine blades. Comprising a hub body, a connecting rotating shaft is fixedly mounted on the hub body, the interior of the hub body is divided into a power source cavity, a mounting cavity and a driving cavity, an adjusting assembly is arranged in the driving cavity, wind turbine blades are mounted on the adjusting assembly, and blade empennages are fixedly mounted at the tails of the wind turbine blades; a notch is formed in the side edge of the wind turbine blade, a linkage assembly is arranged in the mounting cavity, and a flow guide assembly is arranged on the linkage assembly. Air flow is concentrated through synchronous rotation of the flow guide blades and the wind turbine blades, the flow characteristic of the air flow on the surfaces of the blades can be effectively improved through the design, lift force is increased, and noise is reduced. And the guide blades are combined with an angle adjusting mechanism of the blades, so that the adaptability is enhanced, and the using effect of the wind turbine blade is effectively improved.

The dry gas sealing structure of the vein-shaped bionic groove comprises a movable ring and a static ring which are matched with each other, and a sealing end face is arranged on the movable ring; a plurality of dynamic pressure grooves are evenly engraved in the sealing end face of the movable ring in the circumferential direction, the inlet side of the end face of the movable ring is a high-pressure side, the other side of the end face of the movable ring is a low-pressure side, the opening position of each dynamic pressure groove is located on the high-pressure side of the end face of the movable ring, each dynamic pressure groove comprises a vein-shaped bionic groove distributed in the circumferential direction, and each vein-shaped bionic groove comprises a main vein and side veins divided into two sides from the main vein. In the operation process of the vein-shaped bionic groove, fluid flows into the dynamic pressure groove through an inlet of the dynamic pressure groove and is extruded by the dynamic pressure groove to form a high-pressure area at the main vein, so that the static ring is opened, the sealing effect is formed, the fluid is blocked at the main vein of the vein-shaped bionic groove, the dynamic pressure effect of the fluid is enhanced, and the sealing effect of the fluid is improved. Meanwhile, part of fluid flows into the low-pressure side pulse, the working medium leakage amount is reduced, the abrasion degree of a sealing piece is weakened, and the service life of the sealing device is prolonged.

The mobile air conditioner comprises a shell, a horizontal partition plate is arranged in the shell and divides the shell into an upper cavity and a lower cavity, a first volute assembly made of heat preservation materials is arranged in the upper cavity, a first volute cavity is formed in the first volute assembly, an evaporator is arranged at the air inlet end of the first volute cavity, and a second volute assembly made of heat preservation materials is arranged at the air outlet end of the first volute cavity. The air outlet of the first volute cavity faces upwards; a second volute assembly is arranged in the lower cavity, a second volute cavity is formed in the second volute assembly, a condenser is arranged at the air inlet end of the second volute cavity, and the air inlet end of the second volute cavity and the air inlet end of the first volute cavity are located on different faces of the shell. The mobile air conditioner with the heat preservation air cavity is compact in structure, convenient and rapid to assemble, high in precision, low in working noise and power consumption, large in air outlet amount, long in air supply distance and good in heat dissipation performance, continuous and stable refrigeration of the mobile air conditioner is guaranteed, and the using effect is good.

The invention relates to the technical field of air conditioning equipment, in particular to an air treatment air cabinet. The air handling air cabinet comprises a shell, an air duct is arranged in the shell, and the air duct comprises an air return channel, a heat exchange channel and an air supply channel which are sequentially arranged in the air flow direction; the air return channel and the air supply channel are arranged side by side in parallel, so that the air channel is of a U-shaped structure. The heat exchanger comprises a filter module, a heat exchange module, a fan module and a silencing module. According to the embodiment of the invention, the air duct is arranged to be of the U-shaped structure, so that the flowing path of air in the air cabinet is more reasonable, the air flowing resistance is reduced to a certain extent, and the air treatment efficiency is improved. Due to the fact that the filtering module is mainly installed in the air return channel, the space occupied by the filtering module is sufficient, under the condition of the same air passing area, the filtering module can be thicker, the whole unfolded filtering area is larger, the service life is longer, and the replacement period of the filtering module is greatly prolonged.

The invention discloses a variable-flow submersed nozzle based on continuous cast steel production, and relates to the technical field of submersed nozzles, the variable-flow submersed nozzle comprises a base, the top surface of the base is provided with a flow control mechanism used for controlling the flow of cast steel liquid, and the top surface of the base is provided with an auxiliary flow mechanism used for assisting the flow of the liquid steel; the flow control mechanism can be blocked in the submersed nozzle, so that the flowing space of molten steel in the nozzle is reduced, the flow of the molten steel is controlled, a stop block is relatively simple to use, a complex flow control system and related equipment are not needed, the complexity and cost of the system are reduced, potential fault points are reduced, and the service life of the system is prolonged. The auxiliary flowing mechanism can knock the isolation plate, impurities attached to the isolation plate can be shaken off by knocking the isolation plate, the cleaning effect is achieved, blockage of a water gap can be reduced by cleaning the blocked isolation net, the fluidity of molten metal is improved, and therefore the production efficiency is improved, and the rejection rate can be reduced and the product quality can be improved by cleaning the blocked isolation net.

The invention relates to the technical field of flow velocity detection, and discloses a flow velocity meter detection device, which comprises a base, a reservoir fixedly mounted on the upper surface of the base, a first water tank fixedly mounted on the upper surface of the base, a second water tank fixedly mounted on the upper surface of the base, and a first water pipe arranged in an inner cavity of the reservoir, according to the invention, the filtering assembly can adopt a simulation scene to detect the flow velocity of water in different water areas, can filter impurities in the water, and can rapidly adjust the height difference of the water level through the partition plate assembly, so that the device is suitable for simulating various scenes, avoids the interference of the external environment on the flow velocity of water flow, enables the detected data to be more accurate, and improves the detection precision. The height of the water level can be rapidly measured through the water level assembly, an alarm can be given out in time when the height of the water level changes, measurement personnel are reminded to conduct correction, and errors of detection data are avoided.

The invention relates to the technical field of flue gas treatment, in particular to a tail gas soot trapping filter which comprises a cage type frame and a metal filter bag, a gas outlet and a gas inlet are formed in the cage type frame, and the metal filter bag is detachably arranged in the cage type frame; a plurality of vent holes are formed in the metal filter bag, the vent holes are filled with metal powder, and flocculent filter holes are formed by the metal powder and the vent holes in a high-temperature sintering mode; one end of the filter hole is communicated with the air outlet, and the other end of the filter hole is communicated with the air inlet; according to the tail gas soot collecting filter, the metal filter bag is arranged to filter tail gas of a diesel engine, so that the resistance of an air channel is small, the air channel is not prone to being blocked in the filtering process, the exhaust back pressure of the engine is not prone to being increased, and normal operation of the engine is facilitated.

A centrifugal fan impeller with combined blades, wherein the blades are composed of blade groups; the blade groups include backward curved blades and forward inclined blades, and there are inner blade group guide vanes between the backward curved blades and the forward inclined blades, and there are inter-blade group guide vanes between adjacent blade groups; the inner blade group guide vanes include the first guide vanes in the blade group and the second guide vanes in the blade group, and the first guide vanes in the blade group and the second guide vanes in the blade group are both arc-shaped blades, and the inter-blade group guide vanes include the first guide vanes between the blade groups and the second guide vanes between the blade groups, and the first guide vanes between the blade groups and the second guide vanes between the blade groups are both straight blades; the inner blade group guide vanes are located at the outlet of the blade flow channel, and the inter-blade group guide vanes are located at the inlet of the blade flow channel. Due to the improvement of the centrifugal fan impeller, the flow characteristics are improved, the noise is reduced, and the conveying efficiency is improved.

This utility model relates to the field of heat exchange equipment technology, and in particular to a heat exchanger anti-impact structure. The support consists of a support sleeve and a support plate: the support sleeve is circular and tubular; one end of the support plate is fixed to the outer wall of the support sleeve, and the other end is fixed to the inner wall of the heat exchanger; one end of the support rod is provided with a guide cone; the support rod is inserted into the support sleeve; the first guide plate is disc-shaped, fitted onto the support rod, and located on the other side of the support sleeve; the top of the first guide plate is a guide surface one, on which there is a guide hole one parallel to the axis and a guide hole two extending outwards to the bottom; the second guide plate is disc-shaped, fitted onto the support rod, the top of which is a guide surface two, on which there is a guide hole four parallel to its own axis and located on the outer side, and a guide hole three extending inwards from the top to the bottom. This utility model can disperse the impact force of the fluid, protect the heat exchanger tube bundle, and simultaneously ensure uniform fluid distribution and good flow characteristics.

This application provides a spraying mechanism and a photomask processing device, relating to the field of photomask processing technology. The spraying mechanism includes: a flow distribution component and a nozzle connected to the outlet of the flow distribution component; the inlet of the flow distribution component is connected to a liquid storage tank; the flow distribution component has a flow cavity and multiple diversion channels, the flow cavity is connected to the inlet of the flow distribution component, and one end of each of the multiple diversion channels is connected to the flow cavity, while the opposite end is connected to the outlet of the flow distribution component. The spraying mechanism is equipped with a flow distribution component, which has a flow cavity and multiple diversion channels simultaneously connected to the flow cavity. Before entering the nozzle, the fluid first enters the flow cavity and then is diverted into the multiple diversion channels. The diversion channels can optimize the fluid flow characteristics, reduce turbulence, eddies, and other undesirable flow phenomena, allowing the fluid to be sprayed more smoothly from the nozzle and flow to the target location, thereby improving the operating efficiency and stability of the spraying mechanism.

The invention discloses a parameterization optimization method of a mixed-flow water turbine blade and a water turbine, and relates to the technical field of water turbine optimizing.According to the parameterization optimization method, a three-dimensional parameterization model based on initial geometric parameters is constructed, multiple rounds of iteration orthogonal optimization are carried out with design parameters as variables, a search space is dynamically shrunk after each round of optimization, and therefore the optimization efficiency of the mixed-flow water turbine blade is improved. The optimization efficiency and the convergence stability are greatly improved; the problem that a traditional global optimization algorithm is high in calculation cost is avoided, meanwhile, the problem that single-round optimization is prone to falling into local optimum is solved, complex and mutually coupled parameters can be efficiently explored within the limited number of simulation times, and the simulation efficiency is improved. And a closed-loop optimization path which is high in systematicness and can be really applied to engineering is provided for improving the performance of the existing water turbine.

The invention provides a desulfurizing agent continuous humidifying and homogenizing device for high-rate ash calcium circulating desulfurization, which comprises a box body, the box body is provided with a feed port and a discharge port, a multi-shaft stirring assembly is erected between the feed port and the discharge port, and the multi-shaft stirring assembly comprises a plurality of independent main shafts; a plurality of groups of stirring mechanisms are arranged on each main shaft at intervals along the length direction of the axis, the positions of the groups of stirring mechanisms on each main shaft are arranged in a one-to-one correspondence manner, and adjacent stirring mechanisms with different shafts are arranged in a staggered manner; a humidifying box used for spraying atomized water to the double-shaft stirring mechanism is arranged on the side, close to the feeding opening, of the box body and corresponds to the upper portion of the stirring assembly. According to the invention, a mode of humidifying outside the reactor is adopted, circulating ash, a fresh desulfurizing agent and humidifying atomized water with different physical properties and addition proportions are continuously, quickly and uniformly mixed, a layer of uniform water film covers the surface of the mixed powder material, and good flow characteristics are still kept, so that the possible problems of wall adhesion and blockage are avoided.

The invention belongs to the technical field of new energy materials, and particularly relates to slurry of a high-nickel positive electrode active material as well as a preparation method and application of the slurry. Wherein the slurry comprises a solid component and a solvent, and based on the total mass of the solid component, the slurry comprises the following components in percentage by mass: 94%-98.5% of a high-nickel positive electrode active material; 0.005% to 0.5% of an antioxidant; 0.01% to 0.5% of halogenated silane; 1%-2% of polyvinylidene fluoride; 0.5%-3% of a conductive agent; the slurry of the high-nickel positive electrode active material can inhibit gelation of the slurry, and meanwhile, a battery containing the slurry has relatively high capacity performance and has excellent performance when being applied to electric equipment.

The invention discloses an impeller blade based on a tail fin fish scale bionic structure and an impeller with the same, the impeller blade based on the tail fin fish scale bionic structure comprises a blade body, and the blade body is provided with a front edge part and a rear edge part; the end, away from the front edge part, of the rear edge part is provided with a broadening section, the width size of the broadening section is gradually increased in the direction from the front edge part to the rear edge part, and the rear edge part is provided with a plurality of grooves sequentially formed in the width direction of the rear edge part so that the rear edge part can be of a tail fin fish scale bionic structure. According to the impeller blade based on the tail fin fish scale bionic structure, flow control can be achieved on the basis of the bionic surface structure, the flow characteristic of fluid on the rear edge of the blade is improved, smooth transition of the fluid on the tail edge is promoted, vortex falling is reduced, flow resistance is reduced, and noise in the operation process of a vane pump can be effectively reduced.

The invention relates to a sludge concentration tank, a sludge concentration system and an application method.The sludge concentration tank comprises a tank body (1), the interior of the tank body is composed of a gas collecting area (4), a settling area (5) and a sludge storage area (6) from top to bottom, the gas collecting area is provided with a gas outlet (7), the side wall of the settling area is provided with a sludge feeding pipe (8), and the upper portion of the settling area is provided with a liquid discharging pipe (12); a sludge discharge pipe (9) is arranged at the bottom of the sludge storage area; the rotational flow inner part (2) is arranged in the settling area, the rotational flow inner part is a cylinder with the pipe diameter reduced from top to bottom, an opening in the bottom of the rotational flow inner part is a mud outlet, the top of the rotational flow inner part is closed, a clear liquid outlet (16) is formed in the rotational flow inner part, and a feeding opening is formed in the side wall of the rotational flow inner part and communicated with the sludge feeding pipe. The sludge concentration tank and the sludge concentration system can realize efficient separation of sludge and water, and the subsequent sludge treatment energy consumption is reduced; meanwhile, gas is collected, and the deodorization effect is achieved. The working efficiency and the separation efficiency are relatively high.

The utility model discloses a novel double worm wheel drive butterfly valve which comprises a valve body provided with an inner cavity, a valve rod partially located in the inner cavity, an inlet and an outlet, the inlet and the outlet are communicated with the inner cavity, a butterfly plate is arranged in the inner cavity of the valve body, the butterfly plate is connected with the valve rod, two opposite through holes are further formed in the valve body, and the through holes are communicated with the valve rod. The valve rod penetrates through the two through holes and is movably and hermetically connected with the valve body at the two through holes, two ends of the valve rod are respectively connected with a driving device, and the two driving devices can independently or simultaneously drive the valve rod to rotate in the valve body. According to the novel double-worm-gear-driven butterfly valve, the valve cannot be opened and closed due to long-time operation, or under the condition that the valve is not operated for a long time and cannot be opened and closed suddenly, the valve rod can be driven to rotate by independently or simultaneously using the worm gear driving devices, so that opening and closing of the valve are achieved, and meanwhile the zero leakage target is achieved.

The utility model discloses a three-dimensional honeycomb structure for a direct-current blowing type low-speed wind tunnel, which comprises a honeycomb body, the incoming flow side of the honeycomb body is a concave curved surface, and the outgoing flow side of the honeycomb body is a plane. On the basis of a traditional honeycomb device, the concave curved surface is designed on the incoming flow side of the honeycomb device, the shape and the size of the concave curved surface can be adjusted according to actual requirements, meanwhile, other optimization design can be combined, the flow characteristic of airflow in the honeycomb device can be effectively improved, the uniformity and the stability of a flow field are improved, and the honeycomb device is suitable for being used for a large-scale honeycomb device. Therefore, experimental results are more accurate and reliable, the method can be widely applied to the fields of low-speed wind tunnels and the like, and a more efficient and more accurate airflow control and flow field uniformity improvement scheme is provided for experimental research.

The single-suction type centrifugal impeller comprises the blades, a concave face and a convex face are formed at the upper end and the lower end of each blade respectively, the concave faces and the convex faces extend in the length direction of the blades, and a positive deflection blade top and a negative deflection blade root are arranged at the two axial ends of each blade respectively; a front edge is formed at the concave position along the axial height of a blade channel of the blade, a rear edge is formed at the convex position along the axial height of the blade channel of the blade, and the blade is further provided with an air inlet and an air outlet. The centrifugal fan blade solves the technical problems that in the prior art, traditional centrifugal fan blades are designed in a linear mode or a simple bending mode, so that the working efficiency is low in the actual using process, and noise is large in the using process.

The invention provides abalone feed production equipment. The abalone feed production equipment comprises a feeding device, a stirring device, a tabletting device, a cooking device, a drying device and a discharging and cooling device which are connected in sequence, the tabletting device is composed of a material stirring unit, a multi-stage compression roller mechanism, a fine adjustment driving unit, a sensor assembly, a storage unit and a main control unit, and the sensor assembly can monitor environmental data to control parameters of the multi-stage compression roller mechanism; the cooking device comprises a cooking box, a cooking conveying belt, a steam generator and a lifting driving device; the side wall of the cooking box can be driven by the lifting driving device to lift, so that cleaning is facilitated. The drying device comprises a plurality of drying chambers and moisture removal areas which are arranged at intervals, and the moisture removal areas are completely open spaces, so that drying and moisture removal can be performed in a segmented manner, and the drying efficiency is greatly improved. The abalone feed production equipment overcomes the defects of each production link of the abalone feed production equipment in the prior art, so that the production quality of the abalone feed is ensured.

The utility model relates to the technical field of air compressors, in particular to an auxiliary preheating micro-oil screw air compressor which comprises an air compressor body, an air inlet channel and a preheating assembly, the air inlet channel used for air inlet is arranged in the middle of the air compressor body, and the preheating assembly is installed on the outer wall of the air inlet channel. The preheating assembly comprises an air blower used for providing airflow, a heating layer used for heating the airflow, an air inlet used for sucking in external airflow and an exhaust port used for exhausting the airflow to the air compressor body. The multiple air blowers are installed on the outer wall of the heating layer in an array mode, through the design of the flow guide layer and the configuration of the air blowers, flowing of airflow in the air inlet channel is optimized, efficient transfer of heat is ensured, and therefore the technical problems that an air compressor is difficult to start and unstable in work under the low-load and high-load working conditions are solved.

The invention provides a laser vibration cladding device and a method thereof.The device comprises an annular heating cover and an infrared focal plane detector which are arranged in a working cabin with a laser cladding head, and a plurality of independently-controlled infrared heating units evenly distributed in the circumferential direction of the annular heating cover are arranged on the annular heating cover; a workpiece clamping position is arranged below the circle center of the annular heating cover, and the infrared heating units all point to the workpiece clamping position. A multi-channel coaxial powder feeder is further arranged in the working cabin, a plurality of independently-controlled powder bins are integrated in the multi-channel coaxial powder feeder, a powder feeding pipe of the multi-channel coaxial powder feeder is integrated with the laser cladding head, and powder in all channels is converged before entering the powder feeding pipe and conveyed to the laser cladding head through inert gas flow; and an ultrasonic generator, a piezoelectric transducer and a vibration transmission rod are also arranged in the working cabin.

The present invention discloses a method for converging and removing the immersion boundary flow field of an IC lithography device based on an organic medium. A super oleophobic coating is uniformly sprayed on the part where the immersion liquid on the substrate of the IC lithography device is not sufficiently recovered, and then a heat treatment is performed; the immersion boundary flow field is filled with the immersion liquid through an immersion supply system to complete the converging; at the same time, the immersion liquid flows out for recovery; the immersion liquid is recovered through the immersion supply system until it completely flows out, and the removal is completed. The present invention sprays a super oleophobic coating on the part where the immersion liquid is not sufficiently recovered, which can increase the contact angle of the fluid on the surface of the substrate without affecting the exposure conditions and the fluid properties, improve the flow characteristics of the fluid on the substrate, eliminate fluid residues, and achieve the effects of uniform and complete filling and complete recovery of the organic medium; the present invention does not need to change the structure of the substrate itself, improves the use efficiency of the organic medium, reduces costs while improving production efficiency, and ultimately improves the exposure quality.

The invention provides a surface polishing system for motor stator and rotor production. The surface polishing system for motor stator and rotor production comprises a lower support and a power device, a plurality of vertical supports used for supporting are fixed to the lower support, a panel is fixedly connected to the upper ends of the vertical supports, a rotating opening is formed in the panel, and the power device comprises a supporting assembly and a power assembly. The power assembly comprises a motor used for providing power, a plurality of elastic rods fixed to the output end of the motor and rubber balls fixed to the elastic rods, the number of the supporting devices is two, the supporting devices are located on the two sides of the panel respectively, and each supporting device comprises a second lower supporting plate, a first electric push rod, a connecting block and a connecting rod. According to the surface polishing system for production of the stator and the rotor of the motor, the polishing box adopts an oval section design, so that the effective contact area of polishing is increased, and the flow characteristic between an abrasive material and the surface of a workpiece is optimized through fluid mechanics.

The 90-degree round-top and square-bottom inner arc workpiece comprises a pipe fitting, an inner cavity of the pipe fitting is bent by 90 degrees from the input end to the output end, the section of the inner cavity of the pipe fitting transits from a round shape to a square shape and then transits to a round shape, a heat dissipation cavity is formed in the pipe fitting, and heat conduction oil is injected into the heat dissipation cavity. And a heat dissipation mechanism for dissipating heat of the heat conduction oil is mounted on the outer wall of the maintenance plate. The 90-degree inner arc pipe fitting with the round top and the square bottom is arranged, through the smooth transition design of the round-square-round inner cavity section, the flowing characteristic of particulate matter at a 90-degree sharp turn is improved, the smooth transition structure effectively reduces sudden change of the flowing speed of the particulate matter when the particulate matter flows through the elbow, the phenomenon of impact force concentration is avoided, and the service life of the elbow is prolonged. The abrasion of the inner wall of the pipeline and the stress concentration of the elbow part are reduced. Meanwhile, the structure can disperse the impact force of the particulate matter and reduce the accumulation and blockage risks, and the efficiency of the particulate matter conveying process and the reliability of the system are improved.

The utility model discloses a fan for a gas water heater. The fan comprises an exhaust fume collecting hood, a mounting component, an impeller, a volute and a motor, the impeller is assembled in the volute, one side of the impeller is assembled at an air outlet formed in the exhaust fume collecting hood, and the other side of the impeller is connected with the motor through a mounting assembly; the impeller and the motor are connected through the mounting assembly, so that stable rotation transmission between the impeller and the motor is ensured, and mechanical noise generated during high-speed operation of the motor is prevented; and the volute is assembled outside the impeller, so that the effect of reducing noise is achieved, and the noise generated when the fan runs is reduced.

The present invention discloses a design method of a hyperbolic cosine gap sensor and a grid isolator for measuring the thickness of a water film, comprising a cylindrical cavity with openings at both ends and a microwave signal transmission interface in the middle, and a grid isolator is respectively arranged at both ends of the cylindrical cavity, and the grid isolator is composed of a middle straight metal strip and more than one pair of hyperbolic cosine metal strips symmetrically distributed about the middle straight metal strip, and one end of the hyperbolic cosine metal strips close to the port of the cylindrical cavity is connected to the cylindrical cavity. The present invention cooperates with a microwave signal processing circuit to realize microwave measurement of the thickness of water film and liquid film on the inner surface of cylindrical metal; the structure is simple, easy to use, has low requirements on the environment, and has high measurement accuracy; the grid isolator structure has a large opening, which can ensure good flow characteristics and accurate sampling; at the same time, the opening along the direction of the current density of the end face of the resonant cavity can ensure good electromagnetic performance and radiation performance.

The invention discloses a biofilm carrier construction method based on aquatic plant straws. The biofilm carrier construction method comprises the following steps: preparing a functional fungicide; pretreating aquatic plant straws; manufacturing a polymer substrate; diluting a functional bacterial agent into a functional bacterial agent soaking solution, and soaking the pretreated aquatic plant straws in the functional bacterial agent soaking solution; taking out the soaked aquatic plant straws, weaving into a multi-layer regular polygon, and placing on a polymer substrate. The biofilm carrier disclosed by the invention combines the chemical characteristics and physical strength of the functional fungicide and the aquatic plant straws. The composite functional bacterial agent can effectively remove nitrogen and organic pollutants in polluted water through ammoxidation, nitrification, denitrification and other processes. As a high-quality carrier, the aquatic plant straw can play a plurality of roles in sewage treatment.

This utility model relates to a novel grinding disc-assisted grinding device for a sand mill, comprising a frame, a variable frequency motor fixedly installed inside the frame, a bearing seat fixedly installed above the frame, a drive shaft mounted on the bearing seat, the variable frequency motor and the drive shaft connected by a drive belt device, a grinding cylinder fixedly mounted on the bearing seat by grinding cylinder fixing bolts, and an end cap fixedly mounted on the other end of the grinding cylinder by end cap fixing bolts. The bearing seat, grinding cylinder and end cap form a sealed grinding chamber, in which a grinding disc, a conical spacer and a rotor are arranged. The conical spacer is a spacer with a tapered structure. The grinding disc and the conical spacer are mounted on the drive shaft, and the rotor is mounted at the farthest end of the drive shaft. The stirring device composed of the grinding disc, the conical spacer and the rotor rotates with the drive shaft. This utility model solves the problems of traditional cylindrical spacers not being able to fully utilize the grinding chamber space and having low grinding efficiency, and square spacers having high energy consumption and relatively insufficient uniform mixing ability.

The invention relates to the technical field of coating, in particular to a micrometer precise coating die head which comprises an upper die, a middle die and a lower die, the upper die and the lower die are arranged at the upper end and the lower end of the middle die respectively, and discharging seams communicated with the outside are correspondingly formed between the upper die and the middle die and between the lower die and the middle die. A plurality of micrometer adjusting assemblies are sequentially arranged in the discharging seam, the micrometer adjusting assemblies are sequentially arranged in the lengthwise extending direction of the discharging seam, and each micrometer adjusting assembly comprises a flow blocking block and a micrometer screw. The upper layer and the lower layer of the double-layer micrometer precise coating die head achieve precise control over the coating thickness through the micrometer structures. Due to the connection of the flow choking block and the micrometer screw rod, the lifting movement of the flow choking block can be accurately adjusted, so that the coating thickness can be finely adjusted. The design not only improves the coating precision, but also ensures the consistency and uniformity of coating due to the optimal design of the flow choking surface at the bottom of the flow choking block.

A resin composition comprising resin components and inorganic particles, subjected to a shear rate of 10 s at 130°C. ‑1 Viscosity V measured below 10 Divide by the temperature at 130℃ and the shear rate at 1 second. ‑1 The value V is obtained by measuring the viscosity V1 at the time of measurement. 10 / V1 is 0.7 or higher.