118results about How to "Adjustment area" patented technology

The invention provides a method for preparing a high-specific-surface-area porous graphitic nanocarbon plate with coconut shells serving as raw materials, and relates to a preparation method of a graphitic nanocarbon material, and the method is used for solving the problems of conventional preparation method of the graphitic nanocarbon material that the production cost is high, the process is complex, the safety is poor, the output is low, the industrialization is hard to realize, and the prepared graphitic nanocarbon material is low in specific surface area and poor in graphitic degree. The preparation method comprises the following steps: 1, preprocessing the raw materials; 2, coordinating the raw materials with catalysts and activating agents; 3, curing the coordination compound; 4, thermally treating under an inert gas condition; and 5, carrying out acid leaching, washing by distilled water, and drying, so as to obtain the high-specific-surface-area porous graphitic nanocarbon plate. The porous graphitic nanocarbon plate prepared by the method provided by the invention is high in specific surface area, high in graphitic degree and excellent in electrochemical performance; the method is simple, low in energy consumption, high in safety, and suitable for industrial production; and a scientific way is provided for realizing the resource utilization of biological wastes like the coconut shells.

The invention provides a method for preparing a special carbon material with sheet stacked phase structure, integrated carbon atoms at the edge of pore wall surface and controllable pore structure. Special middle phase bitumen is used as a carbon precursor. The carbon precursor is mixed with an inorganic template uniformly in a certain way, the heat preservation is carried out under certain temperature for 0.5 to 10 hours, an electric cooker is heated to 900 DEG C at the speed of 5-20 DEG C / min, and the temperature is kept for 1 to 2 hours. The template is removed, and the carbon material with special phase, surface and pore structure is prepared. The carbon material is subjected to heat treatment within the range of 1500 to 2600 DEG C, and the graphitization degree of the carbon material is adjusted. The method for preparing the carbon material has the advantages of easily obtained raw material and simple technology. Being used as electrode material of a super capacitor, the quality specific capacitance of the carbon material in 6mol / LKOH solution is 220F / g, the unit area specific capacitance is 45muF / cm <2>, and the carbon material has good high-power working performance. Being used as a lithium ion cell cathode, the reversible capacity of the carbon material is 485mAh / g, and the carbon material has the good high-power working performance.

The invention relates to the technical field of water conservancy equipment, in particular to a water conservancy river way trash holding and flood preventing device. Fixed frames, a fence, baffles, strip-shaped through holes, an upper slide rail, a lower slide rail, a movable scraper blade, a driving device, trash holding plates, a first containing cavity, a folding baffle, a first control box, arotating shaft, a rotating wheel, a second storing cavity, a second control box and a limiting groove are included; the two fixed frames are arranged, and the fence and the baffles are arranged between the two fixed frames; the baffles are provided with the strip-shaped through holes; the front side walls of the top end and the bottom end of the fence are provided with the upper slide rail and the lower slide rail correspondingly; the movable scraper blade is installed between the upper slide rail and the lower slide rail in a sliding manner; the driving device is arranged at the top end of the upper slide rail; and the outer side walls of the two fixed frames are each provided with the corresponding trash holding plate. The water conservancy river way trash holding and flood preventing device is simple in structure and convenient to install, has a trash holding and fold preventing function, trash can be subjected to concentrated collecting treatment, and manpower clearing is facilitated; and meanwhile, a flow limiting flood discharge effect is achieved, a river bottom sludge stirring structure is achieved, and normal passing of water flow is guaranteed.

The invention relates to a test device for measuring the spray characteristic of a local application nozzle of a carbon dioxide fire-extinguishing system. The test device comprises a hoisting weighing device, a driving gas cylinder group, a nozzle test interface, an adjustable oil tray, a video monitoring system, a data acquisition processing system and the like, wherein the hoisting weighing device is formed by combining an electric hoist and an electronic weighing platform scale effectively to measure and record the chemical weight of a carbon dioxide fire-extinguishing agent bottle group automatically; the installation height of the nozzle can be adjusted within the height range from 0.3 to 4 meters by an adjustable rack lifting frame, so the requirement of test height of an overhead type local application nozzle and a trough rim type local application nozzle which are specified by the standard is met; and the area of the oil tray can be adjusted within the range from 0.5 to 1 m<2>by the adjustable oil tray. The test device is convenient to operate, high in automaticity and high in measuring speed, improves work efficiency, reduces test cost and saves test space.

The invention relates to the field of communication, and provides a film bulk acoustic wave resonator which comprises a top electrode, a piezoelectric layer, a bottom electrode, an acoustic reflectionstructure, a substrate and a temperature compensation layer with the thickness larger than a preset value, and the temperature compensation layer is also used for adjusting the area of the film bulkacoustic wave resonator. Compared with the prior art, the thin film bulk acoustic wave resonator has a high electromechanical coupling coefficient, the temperature frequency drift coefficient of the thin film bulk acoustic wave resonator can be kept unchanged, and the area of the thin film bulk acoustic wave resonator can be increased.

The invention discloses a rapid surface paint spraying device for hardware plates. The rapid surface paint spraying device comprises a base, a protective cover, a paint storage device and a paint sprayer; the bottom of the base is fixedly mounted with the ground through the supporting base, the top of the base is provided with a conveyor belt, and the conveyor belt is in transmission connection with a motor through a transmission wheel; and a protective cover is arranged on the base, and the paint storage device is arranged at one end of the base. The distance between the paint sprayer and thehardware plates is adjusted through a telescopic air cylinder, so that the paint spraying area and the paint spraying thickness of the hardware plates can be conveniently adjusted, and paint in a paint tank can be stirred and heated; the paint in the paint tank can be prevented from being precipitated and solidified, or the surface of the paint can be prevented from being condensed into blocks, so that the paint can be uniformly sprayed on the surfaces of the hardware plates; and the quality of the hardware plates paint spraying is effectively improved, and the paint spraying and drying speedof the hardware board is accelerated, so that the paint spraying treatment efficiency of the surfaces of the hardware plates is effectively improved.

The invention discloses a suction muffler for a compressor. The technical scheme includes that a partition is arranged between an upper shell and a lower shell, an S-shaped pipe component is arranged between the partition and the lower shell, and an air suction pipe located outside the lower shell is connected with the S-shaped pipe component; the partition comprises an air pipe, a support plate and a fixing plate; the support plate is arranged above the lower shell, the fixing plate and the air pipe are arranged inside a shell body of the upper shell, the air pipe is fixed on the support plate, an air outlet of the air pipe is connected with an air outlet pipe of the upper shell, and an air inlet of the air pipe is connected with an exit of the S-shaped pipe component; the fixing plate is vertically arranged on the support plate along the axis direction of a muffler and connected with a pipe body of the air pipe, and the fixing plate divides a space formed by the partition and the shell body of the upper shell into a first muffler chamber and a second muffler chamber; a first expanding hole is formed in a position, where the first muffler chamber is located, of the air pipe, and a second expanding hole is formed in a position, where the second muffler chamber is located, of the air pipe. By adopting four muffler chambers and multiple expanding holes in the S-shaped pipe component, best effect of noise reduction is achieved.

The invention relates to an oil-absorbing resin and a preparation method thereof. The oil-absorbing resin comprises an oil phase: 5-15 parts of glycol dimethacrylate, 15-30 parts of isobornyl methacrylate, 20-40 parts of p-diphenyl sulfone methacrylate, 10-15 parts of triethylene glycol methacrylate, 10-20 parts of divinylbenzene, 20-30 parts of styrene, 50-200 parts of porogen, 0.5-2 parts of AIBN; and a water phase: 500-1000 parts of distilled water, 5-15 parts of PVA, and 20-50 parts of NaCl. According to the preparation method provided by the invention, the isobornyl methacrylate and the p-diphenyl sulfone methacrylate are used as main synthesis materials, and meanwhile, the non-polar crosslinking agents divinylbenzene and glycol dimethacrylate are used as crosslinking agents, and the styrene with higher hydrophobicity is used as a comonomer to synthetically prepare the oil-absorbing resin which can effectively absorb oil.

The invention discloses medical lead garment storage equipment which comprises a fixing plate, a connection rod is arranged below the fixing plate, the upper end of the connection rod is fixedly connected to the middle of the fixing plate, the lower end of the connection rod is provided with an arc bracket, the middle of the arc bracket is arched upwards and fixedly connected to the connection rod, the two ends, away from the connection rod, of the arc bracket are provided with shoulder pads respectively, the ends, away from the arc bracket, of the two shoulder pads are provided with arm supports respectively, the arm supports are of half-circular-ring-shaped structures, a semi-circular opening of each arm support points to the side, away from the fixing pate, of the corresponding shoulder pad, the plane where the arm supports are located is perpendicular to the plane where the fixing plate is located, and the upper ends of the arm supports are hinged to the shoulder pads. According to the medical lead garment storage equipment, the structures of the arm supports and sleeve supports are adopted, hanging and storing of medical lead garments with long sleeves and short sleeves can be achieved, meanwhile a hydraulic cylinder structure is adopted, and the angle of the arm supports can be adjusted, so that the lead garments can be more stable and not prone to falling.

The invention relates to a drip-proof throttling nozzle device and a usage thereof, which belong to the field of mechanic design, in particular to a drip-proof throttling nozzle device which effectively prevents residual liquid flows down in a large amount after spraying liquid on the nozzle and adjusts the flow of liquid and a technical scheme of the usage. The drip-proof throttling nozzle device consists of a gap membrane, a nozzle top core, a nozzle bottom core, a slotted pan head screw and a nozzle outer cover. In the invention, the nozzle is provided with a gap membrane assembly and a nozzle bottom core assembly and the two and other assemblies of the nozzle and related assembling relationship are arranged so that drip-proofing and adjustment of flow are realized when the nozzle sprays, deficiency that the residual liquid flows down in a large amount after spraying liquid on the nozzle is overcome and the flow of liquid flowing through is controlled by adjusting the nozzle. And the opening form of the nozzle is designed so that the liquid sprayed is in form of a fan to improve the spraying uniformity and covering area.

The invention provides a mobile multifunctional road surface dust suppression system. The mobile multifunctional road surface dust suppression system comprises a mobile vehicle, a mounting outer frame, a road surface adjustable buffering sweeping frame structure, an exhaust fan, an exhaust tube, an air exhaust and dust filtering conduit structure, sundry and dust storage box, an adjustable road surface spraying device, a water storage tank, a road surface floating dust spray and dust suppression device, a road surface accumulated water collection device, a hanging rope, a hanging hook, a firstwater pump, a water guide pipe and a discharging door; and the mounting outer frame is mounted at the upper part of the left side of the mobile vehicle. According to the mobile multifunctional road surface dust suppression system, as a dust filtering screen adopts an HEPA filter screen with thickness of 3-5 mm, the mobile multifunctional road surface dust suppression system is beneficial for being able to prevent dust in the air guide pipe from being discharged from an air outlet pipe; as a road surface sweeping brush is connected to a lower output shaft of a rotating motor through a key andmatched with a road surface sweeping roller brush, the mobile multifunctional road surface dust suppression system is beneficial for conveniently sweeping the dust adsorbed to the road surface; and asregulating valves are correspondingly mounted on water spraying pipes, the mobile multifunctional road surface dust suppression system is beneficial for conveniently adjust the water spraying numberof the water spraying pipes according to use demand so as to conveniently adjust the water spraying area.

The invention relates to a hypersonic flight vehicle, in particular to a method for designing a hypersonic internal parallel three-channel air inlet channel adjusting mechanism. The shape and the position of a hypersonic internal parallel three-channel air inlet channel, the shape and the length of a flow distribution plate, a driving rack, a driven rack and a baffle, the specific position and a fixing mode of the adjusting mechanism in the air inlet channel, a power scheme of the adjusting mechanism and a rotating mode of the flow distribution plate are designed. The flight vehicle has turbine, rocket and stamping working modes; air incoming flow needs to enter different channels so as to meet the requirements of the corresponding working modes; a gear is driven by a motor to drive the flow distribution plate to rotate for adjusting the conversion among the modes; the problem of starting under a wide Mach number is solved; the structure is simple and practical; and the weight is light. The flow distribution plate is divided into a main flow distribution plate and an auxiliary flow distribution plate; during transfer, the baffle plays a role of supporting the driving rack, and airflow is prevented from entering a dead zone above the main flow distribution plate; and the auxiliary flow distribution plate ensures the natural transition of the air flow in a rocket channel, so that the air flow is relatively smooth, and the loss is relatively small.

The invention relates to an adjustment and protection device for a solar energy heat collector, which comprises a heat preservation water tank and more than one vacuum heat collecting pipe, wherein the vacuum heat collecting pipe is communicated with the heat preservation water tank; the adjustment and protection device further comprises a heat collecting pipe supporting frame and a heat collecting pipe protection cover; the two ends of each vacuum heat collecting pipe are respectively fixed on the respective corresponding heat collecting pipe supporting frame; a cover body lid of a heat collecting pipe protection cover lid is installed on the vacuum heat collecting pipe or is installed on the vacuum heat collecting pipe supporting frame; a cover plug of the heat collecting pipe protection cover is hinged on the vacuum heat collecting pipe; a cleaning brush is arranged on one surface of the cover body adjacent to the heat collecting pipe; and when the cover body rotates, the dust on the surface of the heat collecting pipe can be brushed so as to improve the heat collection efficiency of the heat collecting pipe. As the rotational heat collecting pipe protection cover is additionally arranged in the design scheme, the vacuum heat-collecting pipe can be protected, and the radiation receiving area of the vacuum heat collecting pipe also can be adjusted; and the adjustment and protection device can realize the reasonable utilization according to the season and heat collection demands, thereby preventing the heat-collecting pipe from being damaged by hailstone and improving the heat collection efficiency of the heat-collecting pipe.

The invention relates to a catalyst based on a carbonized polyurethane material, a preparation method of the catalyst and a method for preparing cyclopentanone by using the catalyst. By using polyurethane, particularly waste polyurethane materials are used for preparing a porous nitrogen-containing carbon material by a carbonization method; the high-value utilization of the polyurethane waste canbe realized by using the porous nitrogen-containing carbon material as a carrier preparation catalyst; meanwhile, the catalyst expresses the excellent catalyst activity and stability in the reaction for preparing cyclopentanone through furfuryl alcohol re-arrangement hydrogenation; the furfuryl alcohol conversion rate is greater than 99 percent; the cyclopentanone selectivity is greater than 95 percent; the catalyst can be cyclically used for 20 times or above without inactivation; through the long-time continuous service life investigation, the performance is not obviously changed; the wholeprocess production cost is greatly reduced.

The anti-scour and cavitation-resistant high pressure difference regulating valve is superior to traditional high pressure difference regulating valve and 10-15 times longer service life. It includes valve body, inlet channel connected to the inlet, sleeve with throttle port, inner valve body cavity connected to the outlet, and valve stopper. It features the sleeve of structural ceramic and with two sealing planes including sealing plane A near the inlet channel and sealing plane B over the throttle port; and the inner valve body cavity with structural ceramic lining. The present invention is used in petrochemical, electrical and other industry for pressure difference control in high temperature and high pressure steam pipeline.

The invention discloses an improved reaction kettle. The reaction kettle comprises a cavity, a feeding port and a rotating motor are arranged at the top of the cavity, a rotating shaft is vertically installed in the cavity, and the rotating shaft is connected with the rotating motor; at least one layer of isolation mechanism is arranged in the cavity and divides the cavity into a plurality of cavities, wherein a set of stirring paddles are arranged in each cavity, and the stirring paddles are connected with the rotating shaft through a speed change mechanism; the isolation mechanism comprisesa fixing plate, wherein a rotating plate is installed at the top of the fixing plate through a rotating motor, a sealing gasket is fixed to the bottom face of the rotating plate, and a plurality of through holes are formed in the fixing plate and the rotating plate respectively. The communication between the fixing plate and the through holes in the rotating plate is controlled through rotation ofthe rotating plate, and a heat conduction oil coil pipe is installed in the fixing plate. Defects in the prior art can be overcome, the number of production line equipment is reduced, and raw material losses are reduced.

The invention belongs to the technical field of electrode materials, in particular to a preparation method and an application of carbon nanofibers. In the preparation process of carbon nanofibers, starch used as a pore forming agent is decomposed at a lower temperature (200-300 DEG C), and starch is decomposed in the pre-oxidation stage. After pre-oxidation and carbonization, a large number of micro-pores and mesopores will be produced with the shrinkage of fibers. Thus, the specific surface area and the porosity of the carbon nanofibers are greatly improved. When the carbon nanofibers prepared are used to make super capacitors, the specific capacitance of super capacitors can reach 70F / g, which shows that the carbon nanofibers prepared in the invention have excellent electrochemical performance.

The invention discloses a floor waterproof paint coating machine for building engineering construction. The floor waterproof paint coating machine for building engineering construction comprises a boxbody, a storage chamber, a stirring shaft, a moving wheel, a stirring blade, a handle, a sealing cover, a stirring motor, an air compressor, a swinging mechanism, a connection square shaft, a vertical hole, a rotating head, a transmission shaft and a screw; and the floor waterproof paint coating machine for the building engineering construction is reasonable in structure, low in production cost,convenient to install and complete in functions, and the stirring motor can drive the stirring shaft and the stirring blade to rotate, paint is uniformly stirred, and the effect of the use of the paint is improved; an adjustment head is rotated by an internal hexagon wrench, so that a fixed shaft is located at different positions in a long groove to drive a swinging arm to swing, and the amplitudeof swinging of a coating device is adjusted. The coating device can loosen a fixed bolt to adjust the telescopic distance of a movable shell, the area of the swing coating is further adjusted, and the use effect is further improved.

The invention discloses a light-adjustable curtain, which is used for adjusting indoor brightness. The light-adjustable curtain comprises a supporting piece, a winding rod group, a first curtain body and a second curtain body, wherein the winding rod group is combined on the two opposite ends of the supporting piece and consists of a first winding rod and a second winding rod; one side of the first curtain body is combined with the first winding rod, the first curtain body can be unwound along the unwinding direction through a first transmission winding assembly, or can be wound along a winding direction through the first transmission winding assembly; one side of the second curtain body is combined with the second winding rod, the second curtain body can be unwound along the unwinding direction through a second transmission winding assembly, or can be wound along a winding direction through the second transmission winding assembly, wherein the first curtain body has at least one first hollowing part, the second curtain body has at least one first closely woven part, and at least one part area of the at least one closely woven part of the second curtain body is arranged corresponding to the at least one first hollowing part of the first curtain body.

The invention discloses a throat deviating type pneumatic thrust vectoring nozzle with fuel supplementing and thrust augmenting functions. An inner flowing channel of the nozzle comprises a front part contraction section of a first throat, the first throat, a front part expansion contraction section of a second throat, and the second throat which are arranged in sequence. The fuel supplementing and thrust augmenting functions are achieved through a fuel oil jet nozzle arranged at a top point of the first throat or achieved in a manner of doping fuel into a secondary flow filled nearby the first throat and then combusted at the downstream of the first throat. According to the method, the fuel oil injecting angle, speed and flow rate of the fuel oil jet nozzle can be controlled, or the ratio of the fuel to air in the secondary flow and the magnitude of the secondary flow rate can be controlled, so as to achieve the control of a vectoring angle of the nozzle as well as the throat area, and meanwhile, the fuel supplementing and thrust augmenting functions can be also achieved. The method is important for the accelerated flying of an aircraft adopting the throat deviating type pneumatic thrust vectoring nozzle in the air.

The invention discloses a venturi tube with an adjustable throat channel for a current limiting test. The venturi tube comprises a fluid pipe, annular groove is formed in inner wall, a lantern ring matched with the annular groove is embedded in the annular groove, a cavity ring is clamped between the annular groove and the lantern ring, and the section size of the cavity ring is larger than that of the annular groove. A first radial through hole and a second radial through hole which correspond to each other in position are formed in the pipe wall of the fluid pipe, the ring wall of the lantern ring and the ring wall of the cavity ring; the first radial through hole only penetrates through the ring wall on one side of the cavity ring; the second radial through hole penetrates through the ring walls on the two sides of the cavity ring; a first sleeve and a second sleeve are arranged in the first radial through hole and the second radial through hole, the outer wall of the second sleeveis provided with scales or connected with a displacement sensor, the connecting end between the second sleeve and the annular wall of the cavity ring is connected in a sealed mode, and sealing plugs are arranged between the first sleeve and the pipe wall of the fluid pipe and between the second sleeve and the pipe wall of the fluid pipe. The venturi tube is simple in structure and convenient to measure, and the size of the throat tube of the venturi tube in the tube body can be conveniently adjusted at any time.

The invention discloses a novel adjustable ejector. The ejector is composed of ten components including a working medium inlet, an injection working medium inlet end, a compressed working medium outlet, a nozzle, a suction chamber, a mixing chamber, a pressure expansion chamber, a distance measuring needle a, a distance measuring needle b and an adjusting cone. In order to facilitate adjustment and seal, all contact components are connected in a spiral manner. Through rotation of the nozzle and the adjusting cone, the axial position of the nozzle and the throat area of the nozzle can be adjusted, rulers are marked on the nozzle and the adjusting nozzle, and the distance between an outlet of the nozzle and an inlet of the mixed chamber can be obtained at any time through the distance measuring needles, and the throat area of the nozzle can be obtained at any time through the distance measuring needles. The novel adjustable ejector is simple in structure and convenient to operate; and stability of the performance of the ejector under the variable working condition can be enhanced, and the high adaptability is achieved.

The invention discloses an intelligent hydraulic barrel type shock absorber for an automobile. On the basis of a hydraulic barrel type shock absorber usually adopted in an existing automobile suspension system, part of structures of the hydraulic barrel type shock absorber are improved, relevant sensing units and transmission and adjustment mechanisms are arranged in the hydraulic barrel type shock absorber, a servo motor controlled by micro-pulses and a needed input / output signal interface are arranged outside the hydraulic barrel type shock absorber, through the arrangement, the functions ofmeasuring the telescopic stroke and the telescopic frequency of the shock absorber and outputting information are achieved, and meanwhile the damping characteristic of the shock absorber can be adjusted under an instruction of an external control program. Through the intelligent shock absorber, the vibrating state during operation of the automobile can be accurately sensed in real time, an optimal suspension damping characteristic is provided according to a preset program of a control system by adjusting the damping characteristic of the suspension shock absorber, the most comfortable vehiclesmoothness is guaranteed, and the intelligent control requirements of the automobile suspension system are met.

The invention discloses an intelligent agricultural machine which comprises a bottom plate. A water storage tank is fixedly welded to the right side of the upper surface of the bottom plate, a gear motor is fixedly mounted on a tank cover through a mounting rack, a filter net is fixedly mounted on the upper portion of an inner cavity of the water storage tank, a rotating shaft is fixedly mounted on the upper surface of a scraping plate through screws, an output shaft of the gear motor is in transmission connection with the rotating shaft through a coupler, a water pump is fixedly mounted on aleft side plate of the water storage tank through screws, a height adjusting rod is arranged at the left end of the upper surface of the bottom plate, a sprayer is fixedly mounted on an output shaft of a three-phase asynchronous motor through screws, a controller is fixedly mounted on the lower portion of a front side plate of the water storage tank, and a soil moisture sensor is connected to thecontroller through a wire. The intelligent agricultural machine has the advantages that the filter screen can be prevented from blockage, and a good filtering effect and high filtering efficiency areguaranteed; the spray irrigation area and region can be adjusted, the intelligent degree is high, and soil moisture can be well kept.

In the invention, copper mesh grid or sheet copper having holes is as anode with voltage applied. Funicular nano carbon tubes are as field emission cathode. Material of cathode emission is fixed on current conducting substrate, and axis direction of specimen is perpendicular to surface of substrate. Distance between anode and cathode is 0.1- l mm. Operating vacuum degree is controlled at region 1X10-3 - 1X10 -8 Pa, and voltage at 0.2-3 kV is applied between anode and cathode. Part of electrons of field emission is able to passing through anode so as to obtain field emission current in low voltage. Features of the invention are: outstanding performances of field emission, operability and operating at low voltage. Under condition of voltage not higher than lkV, field emission current is in tens microampere, and largest reaches to hundreds microampere.

The invention discloses a sprinkler with an adjustable sprinkling area. The sprinkler provided by the invention comprises a water pipe communicated with cold and hot water pipes, a grab handle convenient to hold, a shower head arranged at the tail end of the grab handle and a plurality of nozzles which are arranged at the bottom of the shower head and regularly arranged with one another; the water pipe, the grab handle, the shower head and the nozzles are communicated with one another; the center of the bottom of the shower head is provided with a hole; an adjusting column penetrates through the hole, the upper end of the adjusting column is connected with one end of a plurality of rigid thin connecting rods by means of umbel-shaped diffusion, and the other ends of the rigid thin connecting rods are movably connected with the top ends of the nozzles; a hollow columnar limiting mechanism which limits the adjusting column along the vertical direction is fixed on the hole and encircles the adjusting column; and the nozzles are connected with the bottom of the shower head in a sealing way by an elastic seal ring. The sprinkler designed by the invention is simple and exquisite in structure, convenient and fast in use, and effective to control and adjust the flow area.

The invention relates to the technical field of intelligent control, in particular to an intelligent control system for recirculating aquaculture. The system comprises a server, and an aquaculture monitoring assembly and a water quality adjusting assembly which are arranged in an aquaculture pond, and is characterized in that the aquaculture monitoring assembly is used for collecting water quality parameters and aquaculture images and sending the water quality parameters and the aquaculture images to the server. An intelligent prediction model is preset in the server, and the server is used for receiving the water quality parameters and the aquaculture images, generating the growth state of aquaculture products according to the aquaculture images, obtaining a prediction result generated by the intelligent prediction model according to the water quality parameters and the growth state, and outputting a water quality regulation and control instruction according to the water quality parameters when the prediction result is that growth is affected. The server is also used for sending the water quality regulation and control instruction to the water quality adjusting assembly. The water quality adjusting assembly is used for regulating and controlling the water quality of the aquaculture water in the aquaculture pond according to the water quality regulation and control instruction. By adopting the scheme, the water quality of the aquaculture water can be regulated and controlled when the aquaculture water affects the growth of aquaculture products, and the aquaculture cost is controlled.

The invention relates to a winding facility for plastic wire and cable manufacturing. The winding facility for plastic wire and cable manufacturing comprises a machine body, a base, a lifting mechanism, a cutting mechanism, a wire bundling mechanism and a winding mechanism. The base is installed at the bottom of the machine body. The lifting mechanism and the cutting mechanism are installed on thebase, the wire bundling mechanism is installed on the side far away from the lifting mechanism on the base, and the winding mechanism is installed on the side far away from the wire bundling mechanism on the base. After operation of the winding facility for plastic wire and cable manufacturing is accomplished, a connecting plate can be moved, through holes in the connecting plate and wire windingrods can be separated, and therefore the connecting plate moves to one end of an insertion rod, a second hydraulic rod is opened, the insertion rod, a bearing and the connecting plate downwards movealong with the second hydraulic rod under the action of the second hydraulic rod, the bearing sleeves the insertion rod, electric telescoping rods are opened, and insertion grooves can carry the wirewinding rods to move under the action of the electric telescoping rods. In this way, cables which are wound can be better separated from the wire winding rods, the cables which are well wound can be well taken down, and therefore the follow-up packaging operation is conducted on the cables.

The invention provides a method for preparing a porous array polyethylene template. The method includes the steps that first, first-stage thermal stretch is carried out on a preformed bar in a drawing device, wherein the pre-formed bar is formed by polyethylene and polystyrene; second, prepared first-stage stretch composite filaments are closely packed and fixed; third, second-stage thermal stretch is carried out; fourth, third-stage thermal stretch is carried out after prepared second-stage stretch composite filaments are closely packed and fixed; fifth, slicing and dissolution treatment are carried out on the composite filaments. The pore diameter of the porous array polyethylene template can be adjusted between dozens of nanometers and dozens of micrometers, and the pore gap of the porous array polyethylene template can be adjusted between hundreds of nanometers and dozens of micrometers. According to the method for preparing the porous array polyethylene template, the structure size of the porous array polyethylene template can be adjusted and controlled, production cost is low, repeatability is good, and continuous production can be realized.