436results about How to "Increase buoyancy" patented technology

The invention discloses a construction method of an ultra-deep buoyancy type double-wall steel hanging box based on a strong tide reciprocating flow sea-crossing bridge bearing platform. The construction method comprises the five process steps of preparation before construction of the steel hanging box, hoisting and lowering of the steel hanging box, preparation before pouring of bottom sealing concrete, pouring of the bottom sealing concrete and construction of the bearing platform. According to the design and construction method for the ultra-deep buoyancy type double-wall steel hanging box based on the strong tide reciprocating flow sea-crossing bridge bearing platform, the buoyancy cabin is arranged for the double-wall steel hanging box of the strong tide rapid flow ultra-large water head to ingeniously solve the problem that the self weight of the steel hanging box is large, four pile casing post-cast strips are reserved to serve as stabilizing measures for resisting reciprocating flow impact in the bearing platform construction period, and the construction efficiency is improved. The construction technology is ingenious, a foundation is laid for smoothly achieving the construction period target of the Hangzhou bay cross-sea railway bridge, and good economical efficiency, practicability and application and popularization value are achieved.

The utility model discloses a pool prefabricated side plate, a side plate connecting structure and a cylindrical assembly type pool, the pool prefabricated side plate comprises an arc-shaped concrete plate body, an arc-shaped metal plate is integrally formed on the concave arc surface side of the arc-shaped concrete plate body in a pouring mode, and a reinforcing mesh layer formed by weaving a plurality of longitudinal reinforcing steel bars and a plurality of transverse reinforcing steel bars is pre-buried in the arc-shaped concrete plate body. The upper ends of the longitudinal steel bars extend out of the upper end face of the arc-shaped concrete slab body to form first steel bar connectors, and the two ends of the transverse steel bars extend out of the vertical faces of the two corresponding sides of the arc-shaped concrete slab body to form second steel bar connectors. The prefabricated side plate of the pool has good structural strength and good overall seepage-proofing and leakage-proof performance; the steel bar joints I are conveniently welded and fixedly connected with the steel bar joints on the outer peripheral surface of the pool top plate when the pool is built; the reinforcing steel bar joints II are convenient for welding and fixed connection between the adjacent pool prefabricated side plates when the pool side wall is built; the side plate connecting structure is ingenious and reasonable in structural design, and it is guaranteed that the cylindrical assembly type pool can be manufactured and implemented smoothly.

The invention relates to the technical field of bottom layer drilling, and provides a construction method for reverse circulation drilling slag extraction under complex geological conditions, and the construction method comprises the following steps: construction preparation: positioning and re-checking a total station; a pile casing is embedded, specifically, the pile casing is placed at the drilling position to be positioned; drilling equipment comprises a connecting rod, an air injection pipe and a slurry pumping pipe are arranged on the inner side of the connecting rod, the lower end of the air injection pipe is connected with an air adjusting structure, the lower end of the connecting rod is movably connected with a connecting rod through a bolt, the surface of the connecting rod is fixedly connected with a slag drawing cylinder through a support, and the lower end of the slag drawing cylinder is fixedly connected with a fixing frame; the surface of the fixing frame is fixedly connected with an alloy tool bit, the surface of the alloy tool bit is fixedly connected with a jacking structure, and the jacking structure is used for enhancing the drilling effect of the alloy tool bit. By means of the technical scheme, the problems that according to an existing reverse circulation drilling slag drawing construction method, drilling cannot be conducted when large-particle-size boulders or pebbles are encountered, the construction efficiency is greatly reduced, and the construction period is delayed are solved.

The invention provides a high-performance epoxy resin grouting material as well as a preparation method and application thereof, the epoxy resin grouting material comprises a component A, a component B and a component C which are mixed according to a mass ratio of 100: (30-40): (650-980) during use; the component A comprises 100 parts of epoxy resin, 20-35 parts of a reactive diluent, 1-2 parts of a wetting dispersant and 0.3-1 part of a defoaming agent; the component B comprises 100 parts of a modified amine curing agent, 12-30 parts of amino modified POSS (Polyhedral Oligomeric Silsesquioxane) and 5-15 parts of a curing accelerator; and the component C comprises 100 parts of cement and black gold sand with different mesh numbers. The high-density, low-oil-absorption and high-strength black gold sand aggregate is introduced, so that the prepared epoxy grouting material has the advantages of high fluidity, good pouring performance, good comprehensive strength and high compressive elastic modulus, and the performance of the epoxy grouting material is far superior to that of a traditional epoxy grouting material. And the introduced high-density black gold sand aggregate improves the slurry density, improves the slurry bubble escape efficiency, reduces the bubble content of the system, and improves the comprehensive compactness, so that the mechanical strength and the comprehensive performance are improved.

The invention relates to a modular gravity type net cage oyster raft which comprises a floating raft assembly, a cage frame assembly and an oyster cage. The floating mat assembly comprises a truss and a plurality of connecting pipes, the connecting pipes are connected to the interior of the truss, and a plurality of floating mat units arranged in a rectangular array are defined between the connecting pipes and the truss and / or between the connecting pipes; each cage frame assembly comprises a frame and floaters, the floaters are fixedly arranged below the frame, and the cage frame assemblies are detachably connected to at least one floating mat unit; and the plurality of oyster cages are hung on the frame and are used for culturing oysters. According to the invention, the oyster row is arranged into three modules which can be separated from each other, so that subunit operation of the workboat is facilitated, the workload of farmers is reduced, the efficiency and the safety of mounting or harvesting the oyster cages are improved, and the floaters are arranged on the cage frame assemblies, so that the downward pressure of the cage frame assemblies on the floating row assemblies is reduced, the buoyancy of the oyster row is enhanced, the service life of the oyster row is prolonged, and the storm resistance of the oyster row is improved.

The invention particularly relates to a solar charging type dock and an unmanned ship, and relates to the technical field of unmanned ships, the solar charging type dock comprises an unmanned ship body and an upper bin body arranged on the upper side of the unmanned ship body in a communicating mode, a charging socket is installed on the rear side of the unmanned ship body, and inner slopes are obliquely arranged on the left side and the right side of the bottom of the unmanned ship body correspondingly; a plurality of clamping grooves are formed in the middle of the inner inclined face, the lifting movable plate can be arranged in the unmanned ship body in a suspended mode according to the magnetic principle that under the condition that a lower electromagnet in the unmanned ship body is powered on, the same poles of the lower electromagnet and an upper floating magnet repel each other, and a space frame on the lifting movable plate is used for installing electric appliance accessories of the unmanned ship. The rubber floating air bag is fixedly arranged on the periphery of the lifting movable plate, the buoyancy of the lifting movable plate can be improved, when the water level of water entering the unmanned ship body is high, the rubber floating air bag enables the lifting movable plate to float, and the water level of the water entering the unmanned ship body is high. Therefore, the use effect is improved.

The invention relates to the technical field of water source sampling equipment, and discloses a hydrogeological survey water source sampling detection device which comprises a sampling shell, reaction shells are arranged on the two side walls of the sampling shell, the same balancing weight is arranged at the bottom ends of the two reaction shells, and the reaction shells are filled with reactants; a plurality of partition plates are arranged in the sampling shell, the interior of the sampling shell is divided into a transition cavity and a plurality of sampling cavities by the partition plates, and the transition cavity is located at the top of the interior of the sampling shell. The situation that a target water area cannot be sampled due to the fact that the sampling shell is impacted by transverse water flow in the diving process and drastically deviates is avoided, the lifting resistance of the sampling shell after sampling is completed can be further reduced, the sampling shell can be conveniently and rapidly lifted to the water surface in a labor-saving mode after sampling is completed, use is convenient, and the structure is compact.

The utility model relates to the technical field of anti-floating anchor rods, and particularly discloses a post-reinforcement anti-floating anchor rod which comprises three reinforcing steel bars, the outer sides of the three reinforcing steel bars are sleeved with the same connecting end, a first grouting pipe is slidably connected to the interior of the connecting end, a second grouting pipe is slidably connected to the interior of the connecting end, and the first grouting pipe and the second grouting pipe are sleeved with the same connecting end. The first grouting pipe and the second grouting pipe are both located among the three steel bars, a plurality of supporting components are arranged on the outer sides of the three steel bars, and the movable cover and the first movable insertion plate are lifted through concrete and inserted into soil. And after the concrete forms the anchoring body, the first movable insertion plate is also fixed, so that the first movable insertion plate is stably inserted into the soil, and after the buoyancy of underground water is increased, the friction force between the anchoring body and the soil is increased through the first insertion plate, so that the stability of the anchoring body is enhanced.

The invention relates to the technical field of collophanite beneficiation, and discloses a collecting agent for phosphorite activation flotation to remove iron and aluminum and an application method of the collecting agent. The collecting agent is good in solubility, high in selectivity and small in dosage, the collecting agent contains a phosphate group and a long hydrophobic carbon chain, the phosphate group can be combined with free calcium and magnesium ions in ore pulp under the neutral condition to exist in the form of magnesium hydroxide, interacts with limonite and bauxite and is adsorbed on the surface of minerals, and therefore the collecting agent can be recycled. Therefore, the floatable collecting agent for increasing the minerals has high collecting capacity on activated fine-fraction gangue minerals containing iron and aluminum and can be applied to the phosphorite flotation process, and separation of phosphate concentrate, bauxite and limonite is achieved.

The utility model discloses an accurate fry feeding control device, and relates to the technical field of aquaculture. In order to mainly solve the problem of feed waste caused by the fact that an existing accurate fry feeding control device cannot be adjusted according to actual needs, the following technical scheme is provided: the accurate fry feeding control device comprises a floating frame used for defining a feeding area and a feeding assembly used for feeding feed to the feeding area; the floating frame comprises a floating frame main body, a blocking net covering the floating frame main body, a floating piece nested in the blocking net and lantern rings arranged at corners of the blocking net; the feeding assembly comprises a discharging port, a material conveying piece and a material bin, the discharging port is located in the feeding area, the material bin is arranged outside the floating frame body, one end of the material conveying piece is communicated with the discharging port, and the other end of the material conveying piece is communicated with the material bin. The automatic feeding device has the advantages that the blocking net can be partially arranged above and below the water surface, feed is prevented from floating out of a feeding area, feeding can be conducted at regular time or according to needs through the feeding assembly, waste of the feed is reduced, and feeding flexibility is improved.

The invention belongs to the technical field of 3D printing and flexible high-hydrophobicity self-luminous life jackets, and particularly relates to a flexible high-hydrophobicity self-luminous life jacket and a preparation method thereof. A self-luminous waterborne polyurethane emulsion of a hydrophobic modified energy-storage long-afterglow luminescent material is synthesized, the prepared self-luminous waterborne polyurethane emulsion is used for coating and post-processing a thermoplastic polyurethane elastomer (TPU) flexible life jacket part formed by SLS, and a luminous coating permeates into micro-gaps in the surface of the TPU part and is attached to the surface. And a firmly attached self-luminous coating is formed after curing, so that the hydrophobic property of the TPU life jacket product is obviously improved, and the self-luminous function in a dim and dark environment is also realized. The problems that a traditional fluorescent material is low in luminous intensity, incapable of continuously emitting light, poor in water resistance and the like are solved, and excellent high-hydrophobicity self-luminous performance is obtained on the premise that the original SLS forming process characteristics of the TPU life jacket are not changed and the mechanical property of the TPU life jacket is reserved.

The invention discloses a suspended ballast floating type offshore wind power foundation suitable for water depth and a using method, and belongs to the technical field of floating type offshore wind power generation. The wind power foundation comprises a three-stand-column semi-submersible foundation, a mooring system and a control system, and the three-stand-column semi-submersible foundation comprises three vertical stand columns, a supporting rod and a ballast caisson; the ballast caisson is connected with a sliding rail arranged on the side wall of the vertical stand column through a sliding rope, so that the ballast caisson moves up and down relative to the vertical stand column, the position of the ballast caisson is adjusted through a control system, and then the gravity center position and the draft depth of the foundation are adjusted so as to adapt to different environmental conditions, and the stability and the anti-overturning capacity are ensured. The use method comprises the steps of monitoring environmental conditions, calculating overturning moment, calculating anti-overturning moment, adjusting the depth of the ballast caisson and recording and analyzing data, the required moving depth of the ballast caisson is reversely deduced by calculating the overturning moment to ensure that the gravity center and the buoyancy center of the foundation are kept at proper positions, and the risk of overturning of the foundation is reduced.

The utility model discloses a concrete pile foundation over-filling automatic reminding device which comprises a buoyancy plate and a center block which are correspondingly arranged up and down, pouring pipe positioning holes are formed in the center of the buoyancy plate and the center of the center block in a penetrating mode, and vibrating rod positioning holes are distributed in the two sides of each pouring pipe positioning hole. The buoyancy plate and the center block are connected through a connecting rod arranged in an up-down guiding mode, the bottom end of the connecting rod is fixed to the buoyancy plate, a connecting block is arranged at the upper end of the connecting rod, the connecting block is installed in a guiding hole in the center block in a guiding mode, a spring is clamped in the guiding hole, and a pressure sensor is clamped at the top of the spring. The pressure sensor is in electric signal connection with the controller, and an erection supporting assembly is arranged on the periphery of the center block. The device is reasonable in structural design, and the pressure sensor senses pressure data of the buoyancy plate and feeds back the pressure data to the controller, so that the concrete pouring degree can be accurately controlled, the situation that concrete overflows from a pile foundation mold during concrete pile foundation pouring is avoided, and waste is avoided.

The utility model relates to the technical field of geological survey, and discloses an engineering geological survey platform on rivers and lakes, which comprises a platform, a hydraulic rod is fixedly mounted at the bottom of the platform, a fixed plate is fixedly mounted at the telescopic end of the hydraulic rod, a movable hole is formed in the platform, connecting grooves are formed in two sides of the platform, and the movable hole is communicated with the connecting grooves. Floating assemblies are arranged in connecting grooves formed in the two sides of the platform, a driving assembly is arranged at the bottom of the platform, and a surveying assembly is arranged at the top of the platform. By starting the first motor, the first motor drives the two-way threaded rod to rotate, the two-way threaded rod rotates to drive the connecting blocks at the two ends to move in the opposite directions, the connecting blocks drive the two ends of the first push rod and the two ends of the second push rod to move in the opposite directions when moving, and meanwhile the second extension plate is driven to move outwards; and meanwhile, the second extension plate drives the first extension plate to move outwards through the sliding rod to be unfolded, and the effects of increasing the buoyancy of the surveying platform and preventing sinking are achieved.

The utility model relates to the technical field of sonar detection equipment, in particular to a seabed sonar detection device, which comprises two hemispherical shells, the two hemispherical shells are hermetically connected through bolts, a base is fixed at the bottom end of one of the hemispherical shells, a sonar detection assembly is mounted on the base, and the sonar detection assembly is connected with the two hemispherical shells through bolts. A cover plate is fixed to the top ends of the two hemispherical shells, a connecting assembly is fixed to the top end of the cover plate, inner cavities are formed in the inner sides of the hemispherical shells, communicated side cavities are formed in the side edges of the two hemispherical shells, and liquid guide pipes extending to the outer portions of the hemispherical shells are fixed to the bottom ends of the side cavities. The whole device is subjected to pressure relief and exhaust work, the overall buoyancy of the device is reduced, the speed is higher when the device falls to a deep sea area, seawater is discharged outwards from a liquid guide pipe through a liquid discharging assembly after detection of a sonar detection assembly is completed, the overall buoyancy of the device is increased, and the device can be conveniently and rapidly taken back for next putting work.

The utility model belongs to the technical field of waste lubricating oil regeneration, and particularly relates to a pretreatment storage tank for waste lubricating oil regeneration, which comprises a tank body, a feeding mechanism for feeding waste lubricating oil is arranged at the bottom of the tank body, a liquid discharging mechanism and a filtering mechanism are sequentially arranged in the tank body from top to bottom, the filtering mechanism comprises a filter screen and a floating object, and the floating object is arranged in the tank body. The filter screen is arranged in the tank body, the floating object is arranged at the edge position of the filter screen, the edge position of the floating object is attached to the inner wall of the tank body, the floating object is used for enabling the filter screen to float on the liquid level of waste lubricating oil, and the filter screen is of a funnel-shaped structure. The filter screen is always located on the liquid level of the waste lubricating oil through the floating objects, when the waste lubricating oil enters the tank body, impurities in the waste lubricating oil cannot be accumulated on the filter screen, and the service life of the filter screen is prolonged.

The invention provides a light energy and wave energy combined power generation device for an offshore area and a use method, the light energy and wave energy combined power generation device is characterized by comprising a plurality of groups of power generation assemblies, and a limiting part is connected between every two adjacent groups of power generation assemblies; the power generation assembly comprises installation assemblies placed on the sea surface, the adjacent installation assemblies are connected through limiting parts, photovoltaic panels are installed at the top positions of the installation assemblies, the installation assemblies are connected with connecting arms, and the connecting arms are provided with arch-shaped elastic structures. One end of the arch-shaped elastic structure is fixedly connected to the position, close to the mounting assembly, of the connecting arm, the arch-shaped elastic structure is movably connected to the connecting arm, the end, connected with the connecting arm, of the arch-shaped elastic structure is connected with a wave energy power generation assembly, and the adjacent wave energy power generation assemblies are also connected through a limiting part; a fixing part is connected to the position, close to the connecting arm, of the bottom of the mounting assembly and fixed to the seabed. The device combines light energy and wave energy for power generation, and improves the efficiency of energy collection in offshore areas.

The utility model discloses an anti-storm anti-toppling buoy which comprises a buoy body and a balance assembly, and the top of the buoy body is of a cavity structure. The balance assembly comprises a balancing weight, a fixing rod, a hinge rod and a bearing plate. The bearing plate is located in a cavity of the buoy body and is in sliding connection with the buoy body, the multiple balancing weights are located in the anti-collision support and are in sliding connection with the anti-collision support, one end of the fixing rod is fixed to the balancing weights, the other end of the fixing rod is hinged to one end of the hinge rod, and the other end of the hinge rod is hinged to the bearing plate; through the arrangement of the balance assembly, seawater is poured into the bearing plate of the buoy body through stormy waves, the gravity of the seawater is utilized to drive the bearing plate to move downwards, the balancing weight is driven to move towards the outer side of the buoy body, the gravity of the outer side of the buoy is increased, and the outer side part of the buoy can be supported by more buoyancy; the impact of large storm waves on the inner side of the buoy is reduced, so that the whole buoy is kept stable, and the buoy is balanced.

The invention provides an enhanced boiling heat exchange device for particle fluid, which comprises a cooling channel, particles and a cooling medium, the cooling channel is provided with a cold surface and a hot surface, the particles and the cooling medium can flow in the cooling channel, the particles comprise a particle shell and an inner core, the inner core is positioned in the particle shell, and the inner core is positioned in the particle shell. A cavity communicated with an external cooling medium exists between the particle shell and the inner core, and steam bubbles are generated or collapsed in the cavity through temperature change between the cold surface and the hot surface, so that the particle density is changed, and the particles are made to oscillate between the cold surface and the hot surface. According to the invention, steam bubbles or steam bubble collapse are generated in the cavity by utilizing temperature change, the generated steam bubbles can reduce the particle density and increase the particle buoyancy at the same time, and the steam bubble collapse can increase the particle density, so that the particles are promoted to oscillate between a cold surface and a hot surface.

The safe and stable type sea rescue boat comprises a boat body and a control panel embedded in one side of the interior of the boat body, a cabin is formed in the boat body, a pair of side base plates are installed on the boat body in a penetrating mode through the rear side of the cabin, and the side base plates extend out of the boat body and are provided with sleeve rods; dynamic adjustment of the load capacity of the overall structure of the rescue boat is achieved through the additionally-arranged air bag structure, surrounding adjustment of the rescue boat is completed through the cover body structure with the variable coverage area, and specifically, control of sedimentation drainage and obtaining of advancing deflection are completed by combining the real-time state of the rescue boat in the rescue process through an intelligent analysis control module. And dynamic adjustment of the load capacity and stable operation control are realized through intelligent control of the rescue boat, so that buoyancy control of the rescue boat for rescued people in the rescue process is met, and the problem of overweight risk in the rescue process is prevented.

The invention provides a high-purity quartz preparation method and product through complexing impurity removal and preferential corrosion co-processing, and the method comprises the following steps: carrying out sand making on quartz raw ore to obtain first quartz particles; performing pre-purification treatment on the first quartz particles to obtain second quartz particles; performing complexing impurity removal on the second quartz particles to obtain third quartz particles; carrying out flotation on the third quartz particles, and cleaning to obtain fourth quartz particles; and carrying out selective corrosion and tailing discarding on the fourth quartz particles, and filtering, washing and drying to obtain the high-purity quartz. According to the preparation method of the high-purity quartz, the requirement on the high-purity quartz raw material is relatively low, and the preparation of a product with higher purity under the same-quality raw material can be realized.

The utility model discloses a prefabricated side plate and side plate connecting structure for the assembly type pool and the assembly type pool, the prefabricated side plate comprises a concrete plate body, a metal plate is integrally formed on one side face of the concrete plate body in a pouring mode, and a reinforcing mesh layer formed by weaving a plurality of longitudinal reinforcing steel bars and a plurality of transverse reinforcing steel bars is pre-buried in the concrete plate body. The two ends of the longitudinal steel bars extend out of the concrete slab body to form first steel bar connectors, the two ends of the transverse steel bars extend out of the concrete slab body to form second steel bar connectors, and the left side edge and the right side edge of the metal plate extend out of the concrete slab body to form slab body connectors. The prefabricated side plate has good structural strength, overall anti-seepage performance, anti-leakage performance and anti-floating performance, the second steel bar connectors and the plate body connectors facilitate welding and fixed connection between the adjacent prefabricated side plates of the water pool when the side wall of the water pool is built, the sealing performance of the joint position between the adjacent prefabricated side plates of the water pool is remarkably improved, and the service life of the water pool is prolonged. And the overall waterproof performance of the side wall of the built pool can be ensured without additionally arranging other sealing assemblies.

The utility model discloses a portable throwing water rescue life-saving buoy which comprises a buoy grip (1), a buoy body (2), a rescue rope (3), an elastic waterproof rubber cap (4), a bolt (5) with a tail hole, an elastic self-sealing waterproof rope guide cap (6) and a conical threaded through hole (7). The buoy body (2) is in a rugby shape with a hollow interior, is used for accommodating the rescue rope (3) and is made of a polypropylene or polyethylene high-foaming material; the lifesaving buoy overcomes the defects that a traditional life buoy is heavy in weight and short in throwing distance, and an inflatable lifesaving buoy is prone to being damaged and ineffective due to water inflow, and the lifesaving buoy is small in density, light in weight, large in buoyancy, not prone to water inflow and capable of achieving the purposes of rescue and lifesaving under the condition that a small amount of water enters. The device is simple in structure, rapid to operate, long in throwing distance, firm, durable, convenient to carry, small in water resistance and capable of being widely applied to water rescue and rescue and swimming across, and the handle is not prone to slipping when grasped by a rescuer.

The invention discloses an unmanned underwater vehicle with a protection structure, and relates to the technical field of unmanned underwater vehicles, the unmanned underwater vehicle comprises a middle-section submerged body, a front-section submerged body and a protection assembly, the middle-section submerged body comprises a submerged body seat, a hanging ring seat, a sealing seat, a synchronous rod, an armature plate, an electromagnetic pressing plate, a reset spring, a conduction seat, an extrusion button, a compressed gas tank, a gas spraying opening and a gas spraying groove; a lifting ring seat is arranged on the outer side of the top of the submerged body seat, and a sealing seat is arranged on the outer side of the bottom of the submerged body seat. The electric control push rod works to return, the front-section submerged body and the rear-section submerged body can be driven to contract towards the interior of the submerged body seat, so that the overall size of the equipment is reduced, through the design, the probability that the equipment collides with foreign objects in a narrow water area can be greatly reduced, and in the rescue task process, the electric control push rod is pushed outwards, so that the rescue efficiency is improved. The size of the equipment can be increased, carrying of materials and personnel can be facilitated by increasing the size, and the size of the equipment can be adjusted so that the equipment can adapt to various different use scenes.

The utility model discloses a fire-fighting life jacket, including life jacket body, first adjusting buckle, adjusting belt, connecting belt, chest hanging ring, back hanging ring, said life jacket body front side is provided with chest hanging ring, life jacket body back side is provided with back hanging ring, life jacket body both sides are sewed and connected with adjusting belt, connecting belt is sewed and connected with the back hanging ring, life jacket body back side is sewed and connected with the back hanging ring. First adjusting buckles are arranged on one sides of the adjusting belts, and connecting belts are connected to the two sides of the bottom end of the life jacket body in a sewing mode. According to the life jacket, the filter paper roll is softened, so that the pulling force borne by the reset spring disappears, the piston is pushed to extrude air in the air cylinder, the air is guided into the connecting pipe under the action of the air outlet and guided into the air bag through the connecting pipe, and the buoyancy of the life jacket body is improved through the operation; therefore, a drowning person can safely emerge from the water surface, and the rescue efficiency is greatly improved.

The utility model belongs to the field of potato planting, and particularly relates to a potato water-saving zoning irrigation control metering device which comprises a main pipeline, a plurality of dripping tanks are arranged outside the main pipeline, and flow dividing pipes are communicated between the main pipeline and the dripping tanks. When the anti-blocking drip tube is used, a water source flows into the drip tube from a main pipeline through the flow dividing tube and then enters the drip tube along with water flow, buoyancy can be increased through the floating ring, so that the movable plate floats upwards, the rotating shaft rod drives the anti-blocking thorn to move out of the drip tube, and the anti-blocking thorn moves out of the drip tube along with entering of the water flow and cooperation of the water flow and the blades. When drip irrigation is completed, the rotating shaft rod rotates, the anti-blocking thorn rotates when moving out of the drip tube, the interior of the drip tube is prevented from being blocked, after the anti-blocking thorn moves out of the drip tube, the anti-blocking thorn loses blocking and begins to drip a tank, after drip irrigation is completed, the anti-blocking thorn returns to the interior of the drip tube again, blocking is prevented, and therefore the effect of preventing drip irrigation blocking is achieved.

The utility model discloses a dredging wear-resistant pipeline for a dredger, which comprises mounting flanges arranged at two ends of an HDPE (high-density polyethylene) dredging pipe, the mounting flanges are fixedly connected to the surface of the HDPE dredging pipe, an anti-corrosion buoyancy tank is arranged at the bottom of the middle of the HDPE dredging pipe, and the anti-corrosion buoyancy tank is connected with the HDPE dredging pipe. An inner cavity of the anti-corrosion buoyancy tank is divided into a sealing area and a movable area through a partition plate, the partition plate is transversely connected to the inner cavity of the anti-corrosion buoyancy tank, three adjusting grooves are defined by the left side and the right side of an inner cavity of the movable area through second fixing plates, and inner cavities of the adjusting grooves are slidably connected with pistons. The air cylinder drives the gear plate to slide downwards, so that the rotating rod is driven to rotate, the multiple pistons are driven to slide downwards to discharge water in the inner cavity of the adjusting groove, the buoyancy of the anti-corrosion floating box is increased, the buoyancy of the HDPE dredging pipe is flexibly adjusted according to requirements, and the practicability of the HDPE dredging pipe is improved.

The invention relates to the technical field of robot communication control, in particular to a recoverable buoy system for a modular underwater robot and a control method.The buoy comprises a shell, a communication module and an acquisition module, and an adjusting module comprises a buoyancy adjusting mechanism and a gravity center adjusting mechanism; the buoyancy adjusting mechanism adjusts the action of an electromagnetic valve according to the buoy depth to realize buoyancy adjustment, and the gravity center adjusting mechanism adjusts the gravity center position according to a preset gravity center position and a gravity center adjusting curve; the power module comprises a first power set and a second power set. The control module is used for determining the adjusting mode of the buoyancy adjusting mechanism, the adjusting mode of the gravity center adjusting mechanism and the adjusting mode of the power module. And the power supply module realizes effective positioning and flexible release and recovery of the buoy, and promotes the same-speed cooperative movement and real-time communication of the buoy and the underwater robot.

The present application relates to an amphibious geotechnical engineering survey platform and a method of using the same, and relates to the field of survey equipment. An amphibious geotechnical engineering survey platform comprises: an operating platform, a buoyancy device arranged in the operating platform, a walking module arranged below the operating platform, and a propulsion module arranged on the operating platform. The operating platform is provided with extension sections on both sides thereof, and the operating platform is provided with two sets of driving devices, which cooperate to drive the two extension sections to flatten or retract. A method of using an amphibious geotechnical engineering survey platform comprises the following steps: S1, land operation; S2, water operation; S3, adjusting the operating area of ​​the platform. The present application has the effect of facilitating the survey work on a wider area of ​​the operating platform and improving the work efficiency.

The invention discloses a method for resource utilization of clay vanadium-containing shale, and belongs to the field of solid waste resource utilization. Aiming at the situation that the clay vanadium-containing shale cannot be effectively utilized due to the fact that the vanadium grade is low and cannot meet the development and utilization requirements, so that resources are wasted, the vanadium grade in the clay vanadium-containing shale is improved through pre-enrichment, and the method mainly comprises the following process steps: (1) grading without grinding after crushing: crushing the clay vanadium-containing shale to be-(2-4 mm), and crushing the clay vanadium-containing shale to be-(2-4 mm); grinding is not needed, wet screening and grading are carried out with 25-45 [mu] m as the standard, oversize products and undersize products are obtained, and the undersize products are pre-enriched products I; (2) after-grinding three-section full-open-circuit short-process flotation is conducted on oversize products, the oversize products are ground to-74 microns and account for 50%-85%, then three-section full-open-circuit short-process flotation is conducted in the acid environment that the pH of ore pulp ranges from 3 to 4, and flotation concentrate is a pre-enriched product II; the collecting agent is compounded and assembled autonomously, and the novel combined collecting agent comprises the following components in percentage by mass: 50-75% of dodecyl guanidine hydrochloride and 25-50% of isooctyl alcohol. The combined inhibitor comprises the following components in percentage by mass: 30-50% of water glass and 50-70% of sodium fluosilicate.