770 results about "Water block" patented technology

The invention relates to a water inlet separation net, a reverse osmosis membrane unit, a reverse osmosis membrane element, a filter element and a filter system in the technical field of reverse osmosis membranes. The reverse osmosis membrane unit comprises a water inlet separation net body and a reverse osmosis membrane attached to the reverse osmosis membrane element; the water inlet separation net body is provided with water blocking parts which are arranged at intervals and in a staggered mode in the extending direction of the water inlet separation net body, so that the water inlet separation net forms a water diversion flow channel which is continuously bent; and the distance between every two adjacent water blocking parts is reduced in sequence. The water diversion flow channel is designed to be bent, and the distance between every two adjacent water blocking parts is sequentially reduced, so that the flow speed of raw water is gradually increased, on the basis that the water diversion flow channel is designed to be relatively long, the flow speed of the raw water can be maintained to be gradually increased, the raw water spirally flows in the water diversion flow channel, and the flow area of the raw water is gradually reduced; the shear flow velocity of the concentrated water end is improved, and concentration polarization caused by poor water quality of the concentrated water end is weakened, so that the reverse osmosis membrane can more effectively resist pollution and blockage.

A cooling system assembly may include a heatsink unit and a water block unit. The heatsink unit is configured to enable a first cooling liquid to undergo a phase-change. The heatsink unit includes a heat pipe heatsink comprising a first thermal transfer surface and a second thermal transfer surface. The second thermal transfer surface is opposite the first thermal transfer surface. The first thermal transfer surface is configured to enable a heat to be transported from at least one packaged integrated circuit to the heat pipe heatsink. The water block unit is configured to enable a second cooling liquid to flow through the water block unit. The water block unit is thermally coupled to the second thermal transfer surface. The second thermal transfer surface is configured to enable the heat to be further transported from the heat pipe heatsink to the water block unit.

The invention relates to the technical field of gates, in particular to a floating gate with a speed regulation function. The technical problems that the opening burden and the water flow impact resistance can be affected by the weight of a gate, the opening and closing weight of an existing gate is inconvenient to adjust when the existing gate is used, the opening burden of the gate is difficult to reduce while the water blocking weight of the gate is kept, water flow enables the gate to vibrate in a gate frame, and the water flow impact resistance of the gate is affected are solved. Therefore, the water blocking effect of the gate is poor. A floating gate with a speed regulation function comprises a door frame, and two insertion holes are formed in the middle of the door frame. The self weight of the gate is increased by sucking water and discharging air when the gate is closed, and the weight is reduced by discharging water and sucking air when the gate is opened, so that the opening and closing weight of the gate is adjusted, the water blocking weight of the gate can be kept while the opening burden of the gate is reduced, and the water blocking effect of the gate is enhanced.

A rapid fire extinguishing device for a new energy automobile comprises a fire extinguishing cover device capable of horizontally stretching or rotationally stretching, the fire extinguishing cover device comprises a flame-retardant fabric, the inner side of the flame-retardant fabric is connected with a horizontal stretching framework or a rotary stretching framework in a wrapping mode, and the horizontal stretching framework or the rotary stretching framework is of a hollow pipeline structure. The hollow pipeline structure is connected with the fire-fighting water spray head and the fire-fighting water connector, a pressure relief skylight is formed in the surface of the flame-retardant fabric, a water blocking fence surrounding the new energy automobile is arranged at the bottom of the fire extinguishing cover device, and fire-fighting water sprayed by the fire-fighting water spray head is accumulated between the water blocking fence and the new energy automobile to form a water pool to soak the new energy automobile. According to the rapid fire extinguishing device for the new energy automobile, the whole automobile is rapidly wrapped with the fire extinguishing cover device on the basis of portability, air isolation is achieved, then multi-angle jet fire extinguishing is achieved through the telescopic framework, the soaking fire extinguishing performance on the automobile is achieved through the water blocking fence, and finally the explosion risk caused by gas accumulation is prevented through the pressure relief skylight.

The invention relates to the technical field of environmental protection engineering construction, in particular to a building construction dust falling device and a dust falling method. The dust falling device comprises a water conveying pipeline with a water conveying cavity and a flow discharging cavity, a spray head communicated with the water conveying cavity, a flow gathering cover arranged on the periphery of the spray head and fan blades arranged in the flow gathering cover. Wherein the water delivery cavity is communicated with the drainage cavity, and a water blocking valve is arranged at the communication position; one side of the fan blade is connected with a driven part located at the communicating position between the water conveying cavity and the drainage cavity. The flow gathering cover has a gathering state and an expansion state used for limiting the water blocking valve. According to the building construction dust falling device and the dust falling method, the water pressure in the water conveying cavity is increased by improving the power of the water pump, and the water pressure is used for driving the flow gathering cover to gather and driving the fan blades to rotate, so that water mist is blown to a construction site. In the process, only the power of the water pump needs to be improved, and therefore the fan blades do not need to be driven in an electric power mode.

The invention relates to the technical field of pressure monitoring, in particular to an air pressure dynamic monitoring method and system for a pipeline water plugging airbag, and the method comprises the following steps: sampling an original pressure waveform in the airbag, extracting a discrete pressure sequence, determining an effective oscillation event, and extracting oscillation characteristic parameters, including oscillation dominant frequency and envelope attenuation slope, based on the effective oscillation event; calculating an equivalent leakage aperture based on the oscillation dominant frequency and the envelope attenuation slope, inputting the equivalent leakage aperture into a deformation state mapping table, and outputting a local deformation level of the airbag; and when the local deformation grade of the air bag exceeds the middle-high grade, a wrinkle eliminating mode is started, and a directional enhanced plugging instruction is triggered. According to the method, the equivalent leakage prediction formula jointly constructed based on the oscillation dominant frequency normalization inverse square term and the envelope attenuation rate term is introduced, the material correlation coefficient is obtained through fluid-structure coupling simulation and least square fitting, and the leakage trend from slight wrinkling to serious tearing can be continuously represented.

The invention belongs to the technical field of petroleum engineering, and discloses an infinitely-segmented sand control and water control well completion process pipe column and method. The infinite segmented sand control and water control well completion process pipe column comprises a sand control top packer assembly, a plurality of segmented screen pipe assemblies and a float shoe assembly which are sequentially connected through blind pipes from top to bottom, each segmented screen pipe assembly comprises a shape memory packer and a water control screen pipe provided with a water control valve, and the shape memory packers and the water control screen pipes are connected through the blind pipes. An annular space between the infinite segmented sand control and water control well completion process pipe column and the well wall is filled with a water blocking proppant. According to the infinitely-segmented sand control and water control well completion process pipe column and method, the purposes that pipe column tripping-in is not limited, the packing effect of a filling well is good, and an adjusting function is achieved in the middle and later periods can be achieved.

Techniques for liquid cooling systems are disclosed. In one embodiment, jet holes in a water block create jets of liquid coolant to be applied to a surface to be cooled, such as a surface of an integrated circuit component. The jets of liquid coolant may disrupt surface boundary layers through turbulence and / or microcavitation, increasing the cooling effect of the liquid coolant. In the illustrative embodiment, negative pressure is applied to a coolant loop of the liquid coolant, which provides several advantages such as being resistant to leaks. In another embodiments, jet holes in a water block create jets of liquid coolant that are directed toward other jets of liquid coolant, which also increases the cooling effect of the liquid coolant.

The invention relates to the technical field of underwater cable manufacturing and detection, in particular to an alternating-current underwater power cable and a cable water blocking performance detection method, and the alternating-current underwater power cable comprises a conductor, an insulating layer wrapping the conductor and a sheath wrapping the insulating layer. The conductor is formed by twisting a plurality of copper wires, and the copper wires are coated with PJ water-swelling water-blocking glue. The waterproof cable has the effect of enhancing the waterproof performance of the cable.

The embodiment of the invention provides a laminated assembly to be laminated, a laminated piece, a photovoltaic assembly and laminating equipment, and belongs to the technical field of photovoltaic assembly preparation. Wherein the laminated assembly to be laminated comprises an initial laminated assembly formed by stacking first packaging glass, a first packaging adhesive film, a battery string, a second packaging adhesive film and second packaging glass in sequence; the adhesive film filler strip and the initial laminated assembly comprise at least one first side edge; the adhesive film filler strip is arranged at the position, close to the first side edge, of the first packaging adhesive film and / or the second packaging adhesive film; at least one section of adhesive tape covers the first side edge. According to the laminated assembly to be laminated provided by the embodiment of the invention, the glue overflowing layer can be formed on the first side edge after lamination, a water blocking effect on the laminated piece is achieved, and even if the first side edge is not coated with an aluminum frame any more, the laminated piece can be prevented from being corroded by water vapor. According to the laminated piece manufactured by the laminated assembly, the first side edge does not need to be wrapped by an aluminum frame, so that dust accumulation is avoided.

The invention is suitable for the technical field of lighting devices, and provides a wide-angle LED street lamp which comprises a mounting frame, a fixing sleeve and a lamp shell, the bottom of the lamp shell is in threaded connection with a transparent lampshade, a water accumulating barrel is rotatably mounted in the fixing sleeve, a water collecting cover is fixed to the top of the water accumulating barrel, and driving blades are arranged on the water collecting cover. A piston disc with a plurality of hollow cleaning pieces is arranged in the water accumulation barrel, a supporting frame is fixed to the bottom of the water accumulation barrel, a spring is installed on the top of the supporting frame, a water retaining ring is arranged in the piston disc, a water outlet hole is formed in the piston disc, and an adjusting column with water absorption sponge at the top end penetrates through the piston disc. Rainwater is used as a cleaning medium, automatic water spraying cleaning of the transparent lampshade is achieved through cooperation of the water accumulation barrel, the piston disc, the hollow cleaning piece and other structures, and power and water resources do not need to be consumed. And the water accumulation cylinder rotates to drive the hollow cleaning piece to rotate, cleaning of the transparent lampshade by the cleaning bristles is completed, manual intervention is not needed, and the illumination quality of the LED street lamp can be remarkably improved.

The invention provides a closed pit coal mine acid old kiln water outflow point pretreatment device, and belongs to the technical field of solid-liquid separation, the closed pit coal mine acid old kiln water outflow point pretreatment device comprises a purification unit, a first telescopic piece and an impurity conveying unit, the purification unit comprises a frame body, a screen drum, a water plugging sleeve, a medicine injection nozzle and a medicine dispensing tank, the screen drum is connected to the frame body, and a first valve is installed at an outlet in the bottom of the screen drum; the water plugging sleeve is arranged on the periphery of the screen drum, the water plugging sleeve is in sliding connection with the screen drum, the medicine injection nozzle is arranged in the screen drum, and the medicine injection nozzle is communicated with the medicine dispensing tank; the first telescopic piece stretches out and draws back along the axis of the screen drum, the fixed end of the first telescopic piece is fixedly connected with the frame body, and the telescopic end of the first telescopic piece is fixedly connected with the water plugging sleeve. The impurity conveying unit comprises a first impurity guiding pipe and a first transferring assembly, an opening of the first impurity guiding pipe is in butt joint with the outlet, and the first transferring assembly is connected into the screen drum and used for conveying impurities in the screen drum into the first impurity guiding pipe. The treatment efficiency of the old kiln water is improved.

The invention provides an anti-condensation device, a cooling system, an anti-condensation method and equipment for a converter valve, and the device is connected to the cooling system, and comprises a valve group, a short-circuit pipeline, and a heating device and a water resistance balancing device which are arranged on the short-circuit pipeline; the method comprises the following steps: controlling the cooling loop and the anti-condensation device to work according to the real-time environment temperature in the converter valve hall; according to the device and method, two-stage anti-condensation control over a cooling loop and an anti-condensation device is achieved by arranging a valve set, it is guaranteed that water resistance on an internal circulation operation short-circuit pipeline is consistent with that of an original heat exchange device in combination with a water resistance balancing device, and large fluctuation of the flow of a valve cooling system is avoided; the anti-condensation device is controlled to switch the internal circulation mode, natural heat dissipation of the heat exchange device can be completely cut off, it is guaranteed that the heat dissipation capacity of the heat exchange device and the heating capacity of the anti-condensation device do not conflict or counteract each other, the temperature of a cooling medium is effectively controlled, and therefore condensation in the converter valve is prevented when an air conditioning system of the converter valve breaks down.

The present application relates to an electronic pump flow feedback calibration method and system, and to the technical field of water pumps, a power calculation step, calculating the input power value of the motor, a standard establishment step, establishing a standard operation plane of the water pump according to a water pump of a performance standard, evenly setting a plurality of different water resistances therein, and obtaining a curve K1-Kn, adding a constant speed curve of a standard performance water pump to the operation plane, and the intersection of the constant speed curve and the water resistance curve is the steady-state operation point of the standard performance water pump at a speed of Ln under a Kn water resistance, and obtaining the operation parameters of the water pump at this steady-state operation point; a fitting step, fitting according to data, obtaining a standard flow equation O; a calibration step, obtaining an observed flow value B through the standard flow equation O, obtaining an actual flow value C, obtaining a flow deviation value ΔQ=C-B, and correcting the standard flow equation O with reference to the flow deviation value ΔQ to obtain a new standard flow equation N. The present application has the advantage of being able to reduce errors.

The invention relates to a high-voltage cable for an industrial park, which is applied to the field of cables, and is characterized in that a waterproof cloth spirally wraps the outer side of a cable joint of a cable body, two ends of the waterproof cloth are pressed and sealed by a cloth pressing ring, and the cable joint is subjected to effective preliminary waterproof protection through the spiral waterproof cloth; deformation bodies and hard self-checking strips which are distributed in a staggered mode are arranged on the inner side of the waterproof cloth, the permeable cloth on the outermost side serves as a water plugging layer, absorbs external moisture firstly, seals the edge of the waterproof cloth after expanding, and effectively blocks entering of follow-up moisture, the middle deformation bodies serve as transition layers, so that the moisture is not prone to spreading deep, and the hard self-checking strips serve as detection layers, so that the detection efficiency is improved. When the cable connector meets water, the tension sensor is triggered to generate obvious data change, waterproof early warning is carried out on rear-end monitoring personnel, the innermost deformation body serves as a delay layer, time is provided for on-site processing of the personnel, and waterproof protection on the cable connector is effectively improved.

The utility model relates to the technical field of one-way valves, and discloses a one-way valve bank structure which comprises an installation frame, the top of the installation frame is movably connected with a fixing seat, a valve shell is fixedly installed at the top of the fixing seat, an inlet pipe is fixedly installed at an inlet of the valve shell, and a flow dividing pipe is installed at the end, away from the valve shell, of the inlet pipe. A water inlet pipe is fixedly installed on the outer wall of the flow dividing pipe, a ball valve is fixedly assembled on the inner wall of the valve shell, and an extending shell is fixedly installed on the outer wall of the valve shell. A water blocking block is pushed to move through water flow, the water blocking block drives a fixing block to move, the fixing block pulls a first water blocking plate and pushes a second water blocking plate at the same time, so that when the fixing block moves, the first water blocking plate and the second water blocking plate can still isolate an extending shell from the inner wall of a mounting frame, and then a spring in the extending shell is protected by the first water blocking plate and the second water blocking plate; and the extension shell is prevented from being in contact with liquid in the mounting frame, so that the extension shell is prevented from being eroded, and the service life of the extension shell is prolonged.

A lower vehicle body having a drainage structure for protecting a PE system applied to a pickup vehicle can include a PE convex part of a rear floor panel forming a bed floor lower space with the bed floor and forms the periphery of a PE system as a drainage protection area, such as by using a water blocking wall, thereby preventing water from draining to a top portion of the PE system, in particular, and preventing water from stagnating at a corner portion by a drainage protection area and a drainage guide area due to the prevention of the water drainage to the top portion of the PE system and preventing water from flowing into the indoor and stagnating in the rear floor panel due to the water drainage to a lower end and sides of the bed floor by the drainage area.

A composite transparent photovoltaic adhesive film comprises two EVA layers and a POE layer, and the POE layer is a key factor for reducing water vapor transmittance. Low density polyethylene (LDPE) is added into the POE layer to improve the water blocking rate. The improved composite transparent photovoltaic adhesive film can have a better water blocking effect, water vapor penetrating through corneas is reduced, the water vapor makes contact with TOPCon battery pieces, and the battery pieces are better protected.

The utility model belongs to the field of constructional engineering, and discloses a water blocking structure for a concrete structural joint to act on an ultrahigh water head, which comprises a copper waterstop and an expansion waterstop strip, the copper waterstop penetrates through the concrete structural joint and is positioned in concrete, the distance between the copper waterstop and the upstream face of the concrete is not less than 20cm, and the expansion waterstop strip is arranged in the concrete structural joint. The copper water stop belt located at the concrete structural joint is in a groove shape, and expansion water stop strips are embedded in concrete on the two sides of the structural joint and arranged on the copper water stop belt. The one-way and two-way water retaining device is suitable for building structural joints with high water heads and ultrahigh water heads, the principle is simple, machining and mounting are easy, the water retaining reliability is improved, and the one-way and two-way water retaining effect is achieved.

The utility model relates to the technical field of water conservancy ship locks, and discloses a water delivery door positioning structure for a water conservancy ship lock, which comprises a water delivery door body and a remote controller, and a drainage mechanism is arranged in the water delivery door body. According to the water delivery door positioning structure for the water conservancy ship lock, by arranging the drainage mechanism, when water needs to be drained to raise the ship water level, information is sent to the controller through a remote controller, the controller enables an electric hydraulic telescopic rod to contract, a water blocking plate ascends along a sliding groove, water flow on the side with the high water level enters a filter screen, and impurities are filtered by the filter screen; the anti-collision rod prevents heavy objects from smashing the filter screen, water flow enters the straight pipe from the bent pipe and passes through the two hydroelectric generators, the two hydroelectric generators generate electric power and then transmit the electric power to the outside through wires to store the electric power, and after the water level rises, the water blocking plate moves downwards to be clamped in the clamping groove through the electric hydraulic telescopic rod. And environment-friendly power generation is achieved by facilitating water resource power generation.

An intermittent water-blocking fully-dry optical cable and a manufacturing method. The intermittent water-blocking fully-dry optical cable comprises a loose tube (1), and an optical fiber assembly (2) and water blocking units (3) located in the loose tube (1). A plurality of water blocking units (3) are provided, and the plurality of water blocking units (3) are distributed at intervals along an axial direction of the optical cable. Each water blocking unit (3) is of a cylindrical structure formed by crimping and connecting water blocking tape segments, and the water blocking units (3) are wrapped around the optical fiber assembly (2).

The embodiment of the utility model discloses a drainage structure of a system shutter, which comprises a frame, a drainage device, a drainage device, a drainage device and a drainage device, and the frame is provided with a first opening and a second opening in opposite directions; the louvre blades are vertically arranged in the frame, the top edges and the bottom edges of the louvre blades are connected to the upper side and the lower side of the frame respectively, the louvre blades are parallel, a flow guide cavity is formed between every two adjacent louvre blades, and openings in the two ends of each flow guide cavity are communicated with the first opening and the second opening respectively; the louver blades comprise the first louver blade and the second louver blade, one side edge of the first louver blade faces the first opening, the other side edge of the first louver blade is connected to one face of the second louver blade, one side edge of the second louver blade faces the second opening, and the other side edge of the second louver blade faces the first opening. A water blocking groove with a groove opening facing the first opening is formed between the other side edge of the first louver blade and the other side edge of the second louver blade. According to the utility model, fluid entering from the first opening is smoothly shielded through the water blocking groove, so that the rain-proof and water-proof performance is improved.

The condensation type heat exchanger comprises a shell, a heat exchange device and a fuel gas combustion device, and a water inlet cavity, a water outlet cavity, a water collecting cavity and an exhaust channel are formed in the shell; the heat exchange device is arranged in the shell, an airflow channel exists between the heat exchange device and the shell, the heat exchange device comprises a first heat exchange structure and a second heat exchange structure which are arranged side by side, each of the first heat exchange structure and the second heat exchange structure comprises at least two heat exchange coils, and all the heat exchange coils are arranged in the shell side by side in the axial direction of the heat exchange coils. The water inlet cavity is communicated with a first connector of the heat exchange coil pipe of the second heat exchange structure, the water collecting cavity is communicated with a second connector of the heat exchange coil pipe of the second heat exchange structure and a second connector of the heat exchange coil pipe of the first heat exchange structure, and the water outlet cavity is communicated with a first connector of the heat exchange coil pipe of the first heat exchange structure. According to the condensation type heat exchanger, the overall water resistance can be lower while it is guaranteed that the overall heat exchange efficiency is high, and the water pressure drop amplitude of water passing through the condensation type heat exchanger is reduced.

The application relates to the technical field of power cables, in particular to a power cable with a distributed water blocking monitoring function and a preparation method thereof. The cable is provided with a multistage water blocking structure design of a conductor layer, an insulation layer and a sheath layer, and is combined with an embedded sensing monitoring system, early warning and accurate positioning of water seepage are realized, and the long-term reliability of the cable in a humid environment is remarkably improved.

The invention discloses a water retaining structure of a cooling tower, and relates to the technical field of cooling tower water collectors, the water retaining structure comprises a water collecting plate, an assembling assembly and a vibration driving assembly, the water collecting plate is composed of a corrugated folded plate and inclined fins, and the vibration driving assembly is used for achieving the effect that the corrugated folded plate vibrates back and forth to shake off condensed water drops. The water collecting plate capable of reciprocating is arranged, thrust of ascending air flow is converted into rotating force through the vibration driving assembly, an arc-shaped pressing rod circularly moves to apply extrusion pushing force to the water collecting plate, and reciprocating vibration of the corrugated folded plate can be achieved in cooperation with reset elastic force of a telescopic spring; the vibration force can enable water drops on the surfaces of the corrugated folded plates to be vibrated to drop downwards or flow downwards, the downward collection speed and efficiency of the water drops are improved, water films are prevented from being formed on the surfaces of the corrugated folded plates, the thermal resistance effect of the water films is effectively prevented, the heat exchange efficiency is improved, and then the effect of further improving the water vapor collection efficiency is achieved.

The utility model is suitable for the field of humidifiers, and discloses an upper water adding humidifier which comprises a base with a containing cavity, a water tank arranged on the base, an air outlet pipe vertically arranged in the water tank, an atomizing piece connected with a water outlet in the bottom of the water tank and a fan arranged in the containing cavity, and an air outlet of the fan is located below the air outlet pipe. One side of the upper end surface of the air outlet pipe facing the inner wall of the water tank is provided with an air outlet; the upper end of the air outlet pipe is covered with a water retaining cover, and the water retaining cover comprises an upper wall, two side walls and a front wall; the upper wall covers the upper side face and the rear side face of the air outlet pipe at the same time. The side walls are located on the two sides of the upper wall correspondingly and attached to the left side face and the right side face of the air outlet pipe. The front wall is connected with the front sides of the two side walls at the same time and faces the air outlet, and a first clamping plate abutting against the front side face of the air outlet pipe is vertically arranged on the inner side of the front wall. According to the upper water adding humidifier, the water retaining cover is arranged at the upper end of the air outlet pipe in a covering mode, water in the water tank can be prevented from splashing into the air outlet pipe, the humidifier is safer to use, and meanwhile the service life of electric appliance elements in the upper water adding humidifier is prolonged.

The embodiment of the utility model provides a phase-change water heater. The phase-change water heater comprises a phase-change inner container, a water inlet pipe and a water outlet pipe, the heating assembly comprises a first cast aluminum heater, a second cast aluminum heater and a water pump, the first cast aluminum heater is communicated with the water inlet of the phase change inner container, the second cast aluminum heater is communicated with the water outlet of the phase change inner container, and the water pump is communicated with the first cast aluminum heater; the water receiving pipe is communicated with the water pump and used for being communicated with an external water source; the thermostatic valve is provided with a first water inlet valve port, a second water inlet valve port and a water outlet valve port, the first water inlet valve port is communicated with the water receiving pipe, and the second water inlet valve port is communicated with the water outlet of the second cast aluminum heater; the blow-off pipe is communicated with the water outlet valve port; one side of the support is provided with the phase change inner container, and the other side of the support is provided with the heating assembly and the thermostatic valve. According to the arrangement, the length of the pipeline between the devices is shortened, so that the water resistance of the pipeline is effectively reduced.

The utility model discloses an alloy filter screen outside a desulfurizing absorption tower, which comprises a body assembled at a water delivery port of a circulating pump. The sieve plate is assembled on the body in a sliding manner, and a plurality of sieve holes are formed in the sieve plate; the dredging needles are arranged on the body and are matched with the sieve holes in an inserting manner so as to eject blockages; wherein one end, facing water flow, of each of the body and the sieve plate is of a concave structure. According to the outer alloy filter screen of the desulfurizing absorption tower, when solid sediments in water block sieve holes in the sieve plate through the pushing force of water pressure on the sieve plate, the water pressure pushes the sieve plate to slide, so that the sieve plate is close to the body, the dredging needles poke out or cut up the blocked sediments, manual dredging is not needed, and the sediments are preliminarily screened out through the sieve plate; according to the device, large-particle sediments are prevented from directly blocking the body, the sediments blocked on the sieve holes are removed in time, and meanwhile, the sediments intercepted on the sieve plate are driven to shake in the moving process of the sieve plate, so that the large-particle solid sediments are crushed.

The invention discloses a roof parapet wall galvanized square steel water retaining edge structure and a construction method thereof, and the construction method comprises the following steps: S1, erecting a level gauge, marking the lower end elevation of galvanized square steel on a parapet wall, unifying one elevation on the whole roof, and popping up an ink line; s2, steel bars with the length of 8-11 cm are tightly attached to the lower portion of the ink line at the interval of 1.2-2 cm and extend into the parapet wall by 2 cm; s3, the galvanized square steel is placed on the steel bars and welded, and antirust paint is brushed; s4, the elevation of the galvanized square steel is corrected through infrared rays, the distance between the edge of the galvanized square steel and the inner side of the parapet wall is 8-11 cm, and the outer side face of the galvanized square steel is kept in a line; s5, after welding, an aluminum alloy eagle beak is anchored to the lower portion of the galvanized square steel edge, and a complete coiled material waterproof device is formed; and S6, after all installation is completed, the gradient of 8-12% is found inwards on the upper portion of the galvanized square steel, anti-crack mortar is used for plastering after an ink line pops up, and the water retaining part is kept smooth along the gradient. In the concrete pouring process, it can be guaranteed that the coiled materials are horizontal and vertical, the coiled materials are effectively prevented from being brushed by wind and rain, and roof leakage is prevented.

The invention relates to a submarine optical cable and a manufacturing method thereof. A plurality of stranded optical units and stranded reinforcers are in contact with the outer surface of a central optical unit and are stranded around the central optical unit to form a cable core; the two stranded reinforcers and the stranded optical unit form an avoiding groove located in the outer surface of the cable core. The outer surface of the stranded optical unit is the groove bottom of the avoiding groove, and the avoiding groove of the cable core indicates that a certain gap exists between the stranded reinforcer and the stranded optical unit, so that the stranded reinforcer provides tensile resistance with certain strength, the optical unit is prevented from being snapped in the stranding production process, in addition, the optical unit is prevented from being directly contacted with a water-blocking tape and a copper pipe in the subsequent production process, and the production efficiency is improved. And the deformation of the optical unit is reduced, so that the production requirements of a water-blocking tape wrapping type submarine cable and a submarine cable with an electric conductor are met. Moreover, the stranding mode of the plurality of stranded optical units and the central optical unit can meet the requirement of placing a plurality of optical fibers in one submarine cable, facilitates the splicing in the subsequent use process, does not damage the spliced optical fibers, and reduces the attenuation.