124results about How to "Guaranteed float" patented technology

The invention discloses a deep sea trapping camera lander system. The deep sea trapping camera lander system comprises a floating ball device, a power supply device which is arranged in the floating ball device, and a USB (universal serial bus) hub, an acceleration recorder, a remote-control timing switch, an iridium satellite digital transmission GPS (global positioning system) terminal and a light trapping camera device, which are powered by the power supply device and are also arranged in the floating ball device, as well as a storage barrel which is arranged at the lower part of the floating ball device, wherein a cage is arranged below the storage barrel, a central supporting passage for communicating the top surface with the bottom surface of the cage is arranged in the middle part of the cage, an electromagnet which is connected with the remote-control timing switch is arranged in the storage barrel, a cylindrical iron block which is sucked by the electromagnet is arranged below the storage barrel, the cylindrical iron block is arranged in the central supporting passage, and the lower part of the cylindrical iron block is connected with an iron ball through a fiber rope. By adopting the deep sea trapping camera lander system, the whole process is recorded via the camera while the effective trapping is realized; a cage door can be automatically closed, and the trapping result is reliable; by adopting the electromagnetic power-off release way, the floating of an instrument cabin can be guaranteed even in power failure caused by different malfunction, so that the risk can be greatly reduced.

The invention provides a hexagonal semi-submersible type tidal current energy and wind energy power generation platform which comprises a hexagonal platform structure and a main floating body. The hexagonal platform structure comprises a hexagonal frame. The six vertexes of the hexagonal frame sequentially comprise a first vertex, a second vertex, a third vertex, a fourth vertex, a fifth vertex and a sixth vertex in an anticlockwise mode. A first box beam, a second box beam and a third box beam are mounted between the six vertexes. A first variable cross-section floating barrel, a second variable cross-section floating barrel, a third variable cross-section floating barrel, a fourth variable cross-section floating barrel, a fifth variable cross-section floating barrel and a sixth variable cross-section floating barrel are mounted below the six vertexes respectively. The main floating body is arranged between the first variable cross-section floating barrel and the fourth variable cross-section floating barrel, a first stand column is arranged between the junction of the first box beam and the second box beam and the main floating body, and a second stand column is arranged between the junction of the first box beam and the third box beam and the main floating body. A first water turbine lifting device, a second water turbine lifting device and a third water turbine lifting device are mounted between the first box beam and the main floating body. According to the hexagonal semi-submersible type tidal current energy and wind energy power generation platform, the excellent stability can be guaranteed, and the sea keeping performance is greatly improved; in addition, water ballast spaces are arranged in the six floating barrels and can be used for adjusting the water volume inside so that the floating state of the platform can be guaranteed.

The invention discloses non-oriented electrical steel for a new energy vehicle and a manufacture method thereof, and relates to non-oriented electrical steel and the production method thereof. The production method comprises the following steps: step A, smelting; step B, continuous casting; step C, heating; step D, phosphorus removal; step E, rough rolling; step F, feeding into a hot rolling box to process; step G, finish rolling; step H, rolling; step I, primary cold-rolling; step J, intermediate annealing; step K, secondary cold-rolling; and step L, final annealing. The non-oriented electrical steel aims to overcome the defects that an existing production process has difficulty in meeting using requirements of the non-oriented electrical steel for the new energy vehicle, provides the non-oriented electrical steel for the new energy vehicle and the production method thereof which can produce the ultrathin non-oriented electrical steel for the new energy vehicle, and the ultrathin non-oriented electrical steel is low in iron loss under high frequency, and is good in high magnetic induction and surface quality.

The invention discloses a water surface garbage recovery and treatment device which comprises a collecting cylinder and a water pumping mechanism, wherein the collecting cylinder comprises a lifting edge, a filter screen, a water collecting cylinder and a floating plate; the lifting edge is connected with the water collecting cylinder through an elastic connecting sleeve; the floating plate is fixed at the upper end of the water collecting cylinder; a garbage detection sensor is arranged on the floating plate; a lifting mechanism is arranged below the floating plate and is fixedly connected with the lifting edge; a water level sensor is arranged on the inner side of the water collecting cylinder; a controller is arranged in the floating plate; the garbage detection sensor, the water levelsensor and the lifting mechanism are connected with the controller; the filter screen is connected with the lifting edge; and the bottom of the water collecting cylinder communicates with the water pumping mechanism. With adoption of the water surface garbage recovery and treatment device with the structure, when larger garbage is detected, the lifting edge descends to enable the garbage to quickly enter the collecting cylinder, so that the recovery and treatment efficiency is improved; and when the water pumping mechanism is damaged, the lifting edge ascends to stop water feeding, so that thecollecting cylinder is ensured to float.

The invention provides a silica gel composition. The silica gel composition comprises a silica gel body consisting of components A and B in a mass ratio of 1 to 5, wherein the component A comprises, by mass, 34-83% of dimethyl polysiloxane, 12-65% of polymethylhydrosiloxane and 1-5% of catalysts; the component B is prepared from, by mass, 34-83% of dimethyl polysiloxane, 12-65% of polymethylhydrosiloxane and 1-5% of cross-linking agent; the silica gel composition further contains, based on the total mass of the silica gel body, 0.4-1% of fumed silica, 3.3-4% of prefoamed polymer microspheres and 20-30% of phase change paraffin or 40-50% of solid-state phase change microcapsules; wherein, the prefoamed polymer microspheres are prefoamed polystyrene microspheres, and shells of the prefoamed polystyrene microspheres are made of polystyrene. The silica gel composition is low in specific gravity and weight, has high thixotropy and a good phase change function and is particularly suitable for preparing silica gel prosthesis products. The invention further provides a preparation method of the silica gel composition. According to the preparation method, steps are few, the process is short, operation is easy and convenient, and preparation cost is low.

The invention discloses a deep sea trapping camera lander system. The deep sea trapping camera lander system comprises a floating ball device, a power supply device which is arranged in the floating ball device, and a USB (universal serial bus) hub, an acceleration recorder, a remote-control timing switch, an iridium satellite digital transmission GPS (global positioning system) terminal and a light trapping camera device, which are powered by the power supply device and are also arranged in the floating ball device, as well as a storage barrel which is arranged at the lower part of the floating ball device, wherein a cage is arranged below the storage barrel, a central supporting passage for communicating the top surface with the bottom surface of the cage is arranged in the middle part of the cage, an electromagnet which is connected with the remote-control timing switch is arranged in the storage barrel, a cylindrical iron block which is sucked by the electromagnet is arranged below the storage barrel, the cylindrical iron block is arranged in the central supporting passage, and the lower part of the cylindrical iron block is connected with an iron ball through a fiber rope. By adopting the deep sea trapping camera lander system, the whole process is recorded via the camera while the effective trapping is realized; a cage door can be automatically closed, and the trapping result is reliable; by adopting the electromagnetic power-off release way, the floating of an instrument cabin can be guaranteed even in power failure caused by different malfunction, so that the risk can be greatly reduced.

The invention provides a preparation method of a rare earth magnesium alloy, comprising: adopting a magnesium electrolytic cell, using a mixture of a magnesium electrolytic molten salt system and a rare earth chloride as an electrolyte molten salt, and the content of the rare earth chloride in the electrolyte molten salt is 2wt% ~15wt%, at 650°C~720°C, the electrolyte molten salt is electrolyzed, and at the same time, anhydrous magnesium chloride and rare earth chloride with a weight ratio of (1.5~11):1 are added to the magnesium electrolyzer. A rare earth magnesium alloy is formed on the upper part of the electrolyte molten salt. In the present invention, by adjusting the weight ratio of magnesium electrolytic molten salt system and rare earth chloride in the electrolyte molten salt and the ratio of anhydrous magnesium chloride and rare earth chloride added in the electrolysis process, the direct preparation of rare earth magnesium alloy in the existing electrolytic magnesium factory is realized. At the same time, the rare earth content in the prepared rare earth magnesium alloy does not exceed 10%.

The invention discloses a wild freshwater fish greenhouse net cage used in a frigid zone in winter. The overwater portion of the net cage comprises a first frame, tempered hollow glass, a second frame, a roof wall, a third frame, a rear wall, a left wall and a right wall. The underwater portion of the net cage comprises a first buoyancy base, a second buoyancy base, a net cage body and a wooden operation channel. The net cage further comprises a first propeller device, a second propeller device, an electric supporting rod, a sensor device, a monitoring device, a control device, an electric stretchable rod, a camera device, a temperature increasing device and a floating tube apparatus. The net cage can accumulate temperature and accept light at daytime and preserve heat at night, can detect the underwater temperature and automatically adjust the draught depth, and can automatically adjust the direction of a tempered hollow glass curtain according to the environment, remote control and monitoring of the net cage are achieved, the net cage is connected with a cultivation cloud platform through the internet, suggestions of a specialist can be obtained in real time, and cultivation diversity and benefits are improved.

The invention discloses an artificial propagation method for coreius guichenoti. The method includes the steps of 1, selection of parent fishes, wherein parent fishes the gonads of which are high in development maturity are selected to serve as spawning acceleration parent fishes according to external features of the parent fishes of coreius guichenoti and the eggs dug out by an egg digging device; 2, preparation and injection of spawning acceleration drugs, wherein according to the weight of the fish bodies, normal saline is adopted for preparing the spawning acceleration drugs such as lutropin releasing hormone A3, gonadotropin of fish pituitary glands and chorionic gonadotropin, a two-time injection method is adopted for injection, the water temperature is 20.5-22 DEG C, and the needlepitch is 8-10 h; 3, artificial propagation acceleration and insemination, wherein the parent fishes are checked at irregular time after injection of the spawning acceleration drugs, artificial insemination is carried out once the phenomena of ovulation and spermiation occur, and a wet insemination method is adopted as the insemination method; 4, hatching, wherein the obtained fertilized eggs are poured into a conical hatching device for hatching, and after fry get out of membranes, the fry are moved into a fry cultivation box for fry cultivation. The operation is simple, the artificial propagation rate and the survival rate of the fry are effectively increased to 85% or above, and a solid base is laid for propagation, releasing and protection of coreius guichenoti group sources.

The invention discloses a high-pressure lever ball float type steam trap and aims at providing the steam trap which is free of shock motion, not limited by structure in terms of working pressure and capable of meeting vertical installation and horizontal installation and improving loading capacity of a floating ball. According to the technical scheme, a valve cover (20) is fixedly connected at an inlet end of a valve body (11) in a detachable mode, a support seat (3) is arranged on an inner side end face of the valve cover and stretches toward a valve cavity, a support (18) is fixedly connected at a free end of the support seat, an upper end shaft hole and a lower end shaft hole of the support are connected with two levels of leverages and a hollow valve ball (15) which is positioned in a ball sleeve in the middle of the support and serves as a sealing valve. The two levels of leverages take shaft holes at two ends of the support as supporting points and compose a two-level leverage collectively, and first levers (7) are connected together through a support upper end rotating shaft (6) and rotate around the rotating shaft with the rotating shaft as a fulcrum. A counter weight (4) and a floating ball (10) are respectively positioned at the two ends of a fulcrum crank support arm, and part of the gravity of the floating ball is overcome through the counter weight of the first levers.

The invention discloses high-temperature bolt steel BG25Cr2MoVA and a preparation method thereof. The high-temperature bolt steel BG25Cr2MoVA comprises the following components of, by weight, 0.23-0.27% of C, 0.20-0.35% of Si, 0.54-0.62% of Mn, 0-0.015% of P, 0-0.012% of S, 1.64-1.72% of Cr, 0.28-0.32% of Mo, 0.20-0.24% of V, 0-0.15% of Ni, 0-0.15% of Cu, 0.020-0.040% of Alt, and the balance Fe and inevitable impurities. The high-temperature bolt steel BG25Cr2MoVA is high in steel purity degree, resistant to high temperature and fatigue, and stable in mechanical property. The preparation method is simple and practical, and the technology is stable.

The invention discloses a deep desulfuration method for magnesium-based composite jetted molten iron. The deep desulphurization method comprises the following steps of: after the molten iron is fed and subjected to temperature measurement and sampling, scrabbling primary slag before a slag scrabbling station; subsequently desulfurating the molten iron in a magnesium-based composite jetting mode at a jetting and desulfuration station, adding a lean slag modifier in the jetting process and modifying the lean slag of the solid or semi-molten desulfurated slag; subsequently transferring to the slag scrabbling station to carry out primary standing on the molten iron and accomplish middle slag scrabbling; separately jetting lime or calcium carbide at the jetting and desulfuration station so as to carry out deep desulfuration on the molten iron and coagulate and modify residual liquid slag; after the separate jetting, transferring the molten iron tank to the slag scrabbling station to carry out secondary standing on the molten iron and accomplish later slag scrabbling; and after the later slag scrabbling, measuring the temperature, sampling and discharging the molten iron so as to meet the requirements on a molten iron material of a low-sulfur steel. The deep desulfuration method adopts a mode that desulfurated slag of different properties is respectively modified and scrabbled, and has the advantages of simplicity in operation, convenience in application and sufficiency in desulfurated slag modification.

The invention relates to the technical field of resource recycling and particularly relates to a waste plastic recycling process. The waste plastic recycling process comprises a frame body, wherein aplurality of first airbags are arranged in a rubber belt and are sequenced in an equal internal manner; first springs fixedly connected to the upper and lower inner walls of the rubber belt are arranged on two sides of each first airbag; at least three extrusion wheels are arranged between a first driving wheel and a second driving wheel; each extrusion wheel rotates along the upper surface of therubber belt; the arrangement distance of the extrusion wheels is equal to that of the first airbags; suction discs which are in the equal number of the first airbags and in positional correspondencewith the first airbags are fixedly connected to the surface of the rubber belt; at least three cams are arranged in the framework; and the cams rotate to be cooperated with the extrusion wheels to extrude the suction discs so as to extrude the first airbags through the rubber belt, the cams do not extrude the first airbags because the first airbags are in a compression state when the first airbagspass the next cam, and the different suction discs are extruded by extruded parts during the rotation of the cams for one cycle.

The invention discloses a river aeration robot based on ecological restoration. The robot comprises a box body, the top of which is fixedly connected with a top box. A first top frame and a second topframe are respectively and fixedly connected at two sides of the top box at the two sides of the top of the box body. A first motor is fixedly connected in the first top frame, and a second motor isfixedly connected in the second top frame. An oxygen generator is fixedly connected to one side of the inner wall of the top box, and a draught fan is fixedly connected to the bottom of the inner wallof the top box. An air outlet of the draught fan is communicated with a top pipe through an air outlet pipe. The invention relates to the technical field of ecological restoration. The river aerationrobot based on ecological restoration effectively performs oxygen generation. At the same time, the design of a spring pipe can be adjusted according to the depth of the river water, and oxygen can be increased for different depths of water. The robot is convenient to use, unnecessary waste is reduced, and the effect of ecological restoration is improved.

The invention provides a mining endless rope winch steel wire rope anti-floating automatic passing device and method, and relates to the technical field of mine car equipment. The device comprises a fixed base, a long rope supporting roller, rope pressing wheels and a return spring, the fixed base comprises a left connecting part and a right connecting part, the fixed base is fixed on a mine car rail through a nut and a pressing sheet, the long rope supporting roller is fixed between the left connecting part and the right connecting part, the rope pressing wheels comprise the left rope pressing wheel and the right rope pressing wheel which are arranged on the left connecting part and the right connecting part correspondingly, a steel wire rope passing gap is reserved between the rope pressing wheels and the long rope supporting roller, the two ends of the return spring are fixed on the fixed base and the rope pressing wheels correspondingly, and the rope pressing wheels are hinged to the fixed base; The endless rope winch steel wire rope anti-floating automatic passing utilizes the device. The device and the method solve the technical problems that a complex rope pressing device is needed at a low-lying position and manual operation is needed to assist a mine car to pass when a winch passes, and in addition, the device and the method have the advantages of being high in efficiency, safe to use and the like.

The invention discloses an oyster floating raft breeding method, and belongs to the technical field of breeding. The method includes the steps of establishing floating rafts, conducting breeding on the floating rafts, conducting sampling every month after breeding to detect the weight gain of the floating rafts, and increasing the number of floaters each time after the weight gain of the floatingrafts is detected, wherein the sinking depth of the floating raft can be 2.2-2.4 m at 29.8-34.9 DEG C, 3.3-3.5 m at 35-39.9 DEG C, 4.4-4.6 m at 40 DEG C or higher, 2.4-2.6 m at the maximum wind speedlevel of 12-13, 4.5-4.7 m at the maximum wind speed level of 14-15 and 5.4-5.6 m at the maximum wind speed level of 16 or higher. The direct impact of strong light, high heat waves and wind waves canbe avoided, the floating rafts and oysters are effectively protected, the survival rate of the oysters is increased, and high economic benefits are achieved.

The invention belongs to the technical field of structural steels for ship and ocean engineering, and particularly relates to a 60mm steel plate with excellent performance in a thickness direction for an ocean platform and a production method thereof. The 60mm steel plate with excellent performance in the thickness direction for the ocean platform comprises the following chemical components by mass percent: 0.09-0.14% of C, 0.20-0.50% of Si, 1.10-1.50% of Mn, less than or equal to 0.015% of P, less than or equal to 0.005% of S, 0.030-0.060% of Nb, 0.010-0.020% of Ti, 0.015-0.050% of Als, the balance of Fe, and inevitable impurities. The steel plate has excellent performances in the thickness direction, steelmaking production adopts a single slag process, and the production method is simple and feasible.

The invention discloses an explosion-proof lead-acid storage battery, which comprises a battery container, a battery cover, plate groups, an electrolyte, exhaust bolts and safety pads, wherein the battery cover is a single-layer cover; the battery container and the batter cover are formed by high-tenacity PP plastic in an injection molding manner and are bonded together in a heat sealing manner; the plate groups are connected with one another in series in a through the partition (TTP) welding manner; each exhaust bolt is hermetically fixed to a liquid filling hole of the battery cover via a thread; and each safety pad is arranged at the upper part of each plate group, and floats on the surface of the electrolyte under each liquid filling hole. The explosion-proof lead-acid storage battery can effectively filter an acid mist, and can prevent an external fire source from detonating the battery, and the damage degree to the battery caused by internal sparks is significantly lowered, and the explosion-proof lead-acid storage battery can prevent the electrolyte from overflowing, prevents external dust from affecting use of the storage battery, and can effectively prevent fragments formed after a storage battery housing detonates from hurting people.

The invention discloses a titanium alloy tinned wire drawing die. The titanium alloy tinned wire drawing die comprises a die sleeve and a die core. The die core comprises a metal sintered block, a diamond particle and a gland. The die sleeve is a titanium alloy sleeve. The die sleeve is a cylinder, and the upper end of the die sleeve is open. An inlet conical hole forming an obtuse angle is formed at the center of the bottom of the die sleeve and used as the inlet end of the wire-drawing die. The metal sintered block is arranged at the bottom in the die sleeve. The gland is located on the top of the metal sintered block. A big-end-up outlet conical hole is formed at the center of the gland and used as the outlet end of the wire-drawing die. The diamond particle is embedded into the metal sintered block and located on the vertical center line of the die sleeve, deviates from the center point of the die sleeve and is close to the lower surface of the die sleeve. A die hole is formed in the center of the metal sintered block, and the die hole is an arc-shaped die hole. The invention further discloses a method for manufacturing the titanium alloy tinned wire drawing die. The titanium alloy tinned wire drawing die has the advantages that the die can be prevented from sinking in tin liquid and adhering to tin liquid, the drawing resistance is small, line breakage and bamboo joints are prevented, impurities can be rapidly discharged, the die core and the gland are not prone to disengagement, and the service life is prolonged.

The invention discloses a water surface photovoltaic supporting device. An outer pile barrel is arranged on a grouting foundation pile, an inner pile barrel is sleeved with the outer pile barrel, the inner pile barrel can slide up and down along the outer pile barrel, a supporting assembly is connected to the top of the inner pile barrel, and a plurality of inclined rods are arranged between the side face of the inner pile barrel and the supporting assembly at intervals; a plurality of buoys are fixedly arranged on the side face of the supporting assembly, an angle adjusting assembly is arranged at the top of the supporting assembly, and the photovoltaic assembly is fixedly installed on the angle adjusting assembly. Stable fixation of the water surface photovoltaic module can be fully ensured, the action of heavy pressure is reduced through elastic support, the sun facing direction of the module is increased in a limited space, and the module sampling efficiency is improved.

The invention discloses an intelligent water life saving apparatus and relates to the technical field of water life saving equipment. The intelligent water life saving apparatus comprises a safety belt, wherein the safety belt is composed of two air storage bags, namely a front air storage bag and a rear air storage bag; two straps are symmetrically above the safety belt; one sides of the two airstorage bags are fixedly connected through an elastic cloth strip; the other sides of the two air storage bags are connected with an air charge control device which is mounted on the safety belt; theair charge control device is communicated with the front air storage bag and the rear air storage bag respectively; the air charge control device is composed of an air generator and a life saving control system; the air generator comprises an air compression tank and an air triggering device; a compressed inert gas is stored inside the air compression tank; and the air compression tank is communicated with the two air storage bags through the air triggering device respectively. By adopting the life saving apparatus, the air storage bags are charged with air through the air charge control device according to acquired practical environment information, the safety belt can be rapidly expanded to ensure that a user can float up, and then drowning accidents can be avoided.

The invention discloses an overwater floating heat-pipe-radiating thermoelectric power generating set and relates to the field of thermoelectric power generating equipment. The overwater floating heat-pipe-radiating thermoelectric power generating set comprises a solar absorbing plate, a thermoelectric power generator unit and a loop heat pipe radiating system. The solar absorbing plate is arranged at the absorbing end of the thermoelectric power generator unit. The loop heat pipe radiating system comprises an evaporator and a condenser; a liquid inlet of the evaporator is communicated with anintake port of the condenser through a liquid line; the liquid inlet of the evaporator is provided with a compensator; an exhaust port of the evaporator is communicated with an intake port of the condenser via a gas line and is provided with a gas collection chamber; a capillary core is laid horizontally between the compensator and the gas collection chamber; a plurality of gas passages communicated with the gas collection chamber are arranged parallelly above the capillary core; a plurality of liquid passages communicated with the compensator are arranged below the capillary core; therefore,thermoelectric power generation efficiency can be improved, and the service life of the overwater floating heat-pipe-radiating thermoelectric power generating set can be extended.

The invention provides a self-adaptive variable-attitude unmanned aerial vehicle capable of achieving aerial, water surface and underwater flight as well as a control method thereof. The unmanned aerial vehicle comprises a machine body, a water pump, machine arms, floating devices, direct-current brushless motors and dual-purpose propellers, wherein the floating devices are uniformly distributed at the periphery of the machine body and are separately connected to the machine body through machine arms; the direct-current brushless motors are fixedly arranged in the floating devices, and outputshafts thereof extend out from the top ends of the floating devices; the dual-purpose propellers are in transmission connection to output shafts of the direct-current brushless motors; a first controller and a first battery which are connected are fixedly arranged in each floating device, and the first controller and the first battery are connected to the corresponding direct-current brushless motor; a water cavity is formed inside the machine body, and a water inlet and a water outlet are formed in the surface of the machine body; a water pump as well as a second controller and a second battery connected are fixedly arranged in the machine body, and the second controller controls the water pump to be in communication connection to each first controller. The self-adaptive variable-attitudeunmanned aerial vehicle capable of achieving aerial, water surface and underwater flight as well as the control method thereof disclosed by the invention achieves aquatic-aerial amphibia and is simple in structure.

The invention relates to a submersible transporting, laying and recovering system and method, and belongs to the technical field of submersible related equipment. The system comprises a hoisting system, a transporting system and a dragging system, the stern or the side of the ship is provided with the hoisting system for hoisting the submersible, and the ship deck adjacent to the hoisting system is provided with the transporting system for transporting the submersible; and the dragging system for recovering the submersible is arranged in the ship body below the hoisting system. The hoisting system is large in rotating angle so that the submersible is conveniently and safely lifted and placed; the hoisting system is rigidly connected with the submersible so that the submersible is effectively prevented from swinging along with the ship; the transporting system has an anti-overturning function and can efficiently and reliably transport the submersible to a hoisting position; the draggingsystem can ensure the floating state and stability of the submersible in water. The system and the method overcome the defects of an existing submersible laying and recovering system, and it can be guaranteed that the submersible can be safely, reliably and efficiently transported, laid and recovered.

The invention discloses a safety shell high-range area radiation monitoring hard cable connecting device and an assembling method thereof; the safety shell high-range area radiation monitoring hard cable connecting device comprises a connecting box, wherein the connecting box comprises a connector arranged in the connecting box and a connecting block used for fixing the connector, wherein the connector comprises a male head connector and a female head connector; the male head connector comprises a male head shell and a first tail clamp screwed into the tail end of the male head shell, and a male head insulator is arranged in the male head shell; a first hard cable penetrates through the first tail clamp and the male head insulator in sequence and is connected to the tail end of a male headinner core; the female head connector comprises a female head shell and a second tail clamp which is screwed into the tail end of the female head shell; a female head insulator is arranged in the female head shell; a second hard cable sequentially penetrates through the second tail clamp and the female head insulator in sequence and is connected to the tail end of a female head inner core; and the front end of the male head inner core is connected with the front end of the female head inner core.

The invention relates to material sorting equipment, in particular to a plastic film recovery system for a paper mill. The plastic film recovery system comprises a frame body, wherein a plurality of first air bags are arranged in a rubber belt; the first air bags are arranged at equal intervals; two sides of each first air bag are provided with first springs fixedly connected to an upper inner wall and a lower inner wall of the rubber belt; at least three extruding wheels are arranged between a first driven wheel and a second driven wheel; each extruding wheel rotates by clinging to an upper surface of the rubber belt; an arrangement distance of the extruding wheels is equal to an arrangement distance of the first air bags; suckers with the number the same as that of the first air bags andpositions corresponding to those of the first air bags are fixedly connected to a surface of the rubber belt; at least three cams are arranged in the frame body; and the cams rotate to be matched with the extruding wheels to extrude the suckers, so that the first air bags are extruded by the rubber belt, and when the first air bags pass by the next cam, as the first air bags are in a compressed state, the first air bags cannot be extruded by the cam, and different suckers can be extruded by a convex position during every revolution of the cam.

The invention discloses a central cylinder cyclone separation and sedimentation device, comprising a tank, a breaking syphonic mouth, a residue discharge hole, an oil discharge hole, an overflow hole,a reversed U-shaped overflow pipe, an upper filter plate, a manhole, a lower filter plate, a water inlet pipe, a backwashing water distribution pipe, a sewage outlet, a center tube breathing hole, abreathing mouth, a residue collecting tank, an oil collecting tank, a water outlet pipe, an outlet water collecting pipe, a filter material, a central pipe, an upper water distribution pipe of a swirling cone, the swirling cone, a backwashing mouth and a central pipe sewage outlet. The central cylinder cyclone separation and sedimentation device can effectively guarantee the distance between the outlet water collecting pipe, namely, a water outlet layer and the uppermost liquid level scum as well as the distance between the water outlet layer and a floating oil layer, thus avoiding the mutualinfluence of sludge, oil and water, and being higher in separation efficiency; the central cylinder cyclone separation and sedimentation device utilizes the layered sedimentation characteristic of thesludge to guarantee the sinking efficiency of the sludge, and the sludge layer can effectively intercept the tiny suspended matters, so that the clear water is enabled to float upwards; the swirlingcone of the device is arranged at the lower part of the central pipe, the upper part of the swirling cone is used for discharging water, and the discharged water is directed toward the periphery of the tank, so that the water flow is enabled to be in a radial flow rising way, and the advection precipitation the effect of the effluent is improved.

The invention discloses a floating positioning device for underwater equipment, which comprises a connecting cylinder, an air bag shell is coaxially and fixedly connected to the top end of the connecting cylinder, a protective shell is coaxially and fixedly connected to the top end of the air bag shell, a lithium battery is fixedly connected to the inner wall of one side of the protective shell, and a mechanical timer is arranged on one side of the lithium battery. The top edge of the protective shell is fixedly connected with a solar panel, the center of the solar panel is fixedly connected with an indicator light, and the center of the indicator light is fixedly connected with a signal assembly; a winding assembly is rotationally installed in the connecting cylinder, a connecting rope is fixedly connected to the winding assembly, and the bottom end of the connecting cylinder is connected with an end cover through a threaded structure. The connecting rope is fixedly connected with the underwater equipment, the locking pin is matched to fix the connecting rope, so that the submerging depth of the underwater equipment is kept unchanged, the air bag is filled with air, and it is guaranteed that the device floats on the sea surface.

The invention provides a floating optical fiber contact member and a connector thereof, which comprises a housing, a floating optical fiber contact member, pressure plates and fastening screws. The floating optical fiber contact member is arranged between the pressure plates at the two ends in the housing; and the pressure plates are fixed to the housing through the fastening screws to form a connector. The floating optical fiber contact member is formed by ceramic pins, flange discs and a support sleeve. The ceramic pins are inserted into the flange discs to form flange components respectively. The flange components are assembled at the two ends of the support sleeve to form the floating optical fiber contact member. Gaps are formed between the flange components at the two ends and the support sleeve correspondingly, and thus free movement can be achieved. Each pressure plate is provided with a step hole in the place installing the floating optical fiber contact member. The root portion of each elastic claw of the support sleeve is provided with a step. When the floating optical fiber contact member is installed into the pressure plates, the steps at the root portions of the elastic claws of the support sleeve are cooperated with the step holes in the pressure plates to form a force discharge structure, so that it can be ensured that the flange components can float in the pressure plates.

The invention relates to the field of methods for collecting oil, in particular to a method for collecting leaked oil. The method includes the following steps: conducting oil recovery on the water surface or the land surface, carrying oil collection cloth to the place nearby the ground and water surface oil leakage collection working site, arranging the oil collection cloth at the specific oil collection position, conducting preparation work, manually throwing small-sized oil cloth containing iron powder on the oil surface to enable the oil cloth with the iron powder to be fixed on the oil by means of the viscosity of the oil, starting a large power electromagnet, adjusting magnetic force of the electromagnet according to a collection range to attract the oil cloth with the iron powder and enable the oil cloth to be contracted together to collect the oil quickly and directly delivering the collected oil into an oil container through a pipe.