40results about How to "Reduce water impact" patented technology

The utility model belongs to the technical field of biological trapping devices, and particularly relates to a lake benthos trapping device which comprises a device body, the device body comprises a trapping box and shunting assemblies, the shunting assemblies are arranged on the two sides of the trapping box and comprise arc-shaped plates and shunting pipelines arranged in the arc-shaped plates, and the shunting pipelines are of hollow structures. A supporting rod is arranged in the base, and a plurality of fan blades are rotationally connected to the supporting rod; the trapping box comprises a first fixing frame, a second fixing frame, a fixing rod, a trapping outer net and a trapping inner net, the trapping inner net is arranged on one side of the first fixing frame and communicated with the trapping outer net, and the trapping outer net and the fixing rod are both arranged between the first fixing frame and the second fixing frame; a counterweight assembly is arranged on one side of the first fixed frame; through the shunting assembly and the counterweight assembly in the device, the water flow impact force in the advancing process can be effectively reduced, shaking caused by non-uniform filtered water quantity is avoided, and the stability of the trapping device is effectively improved.

The utility model discloses a drip-proof check valve which comprises a valve body, a valve cover and a bolt, the top of the valve body is connected with the valve cover through the bolt, a sealing gasket is arranged at the bottom of the valve cover, a spring is connected to the center of the interior of the valve cover, one side of the spring is connected with a guide rod, the center of the guide rod is connected with a spherical valve clack, and the spherical valve clack is connected with the valve cover. A guide sleeve is connected to the side, away from the spring, of the guide rod, a valve seat is arranged in the center of the interior of the valve body, a first filter screen and a second filter screen are arranged on the two sides of the valve body, a lifting type check valve is adopted for the anti-leakage check valve, the valve body and the valve seat form a sealing face through the spherical valve clack, and therefore water flow impact is reduced, and the anti-leakage check valve is convenient to use. The sealing performance is improved, vibration and noise generated during opening and closing can be reduced, the two layers of filter screens are arranged at the positions of the pipelines on the two sides of the valve body, filter screen holes of the filter screens are different, water impurities can be effectively filtered, parts in the valve body are prevented from being damaged by the impurities, and the service life is prolonged.

The invention discloses a quick coupling method for a water supply pipeline. The quick coupling method comprises the steps that S1, a saddle-shaped water pipe connector is manufactured; s2, an original pipeline to be connected in the water supply pipeline is selected; s3, the saddle-shaped water pipe connector is horizontally and vertically welded to the outer wall of the original pipeline; s4, water supply is cut off, and pressure relief is conducted on the water supply pipeline after water supply is cut off; s5, forming a drain hole in the original pipeline, discharging the water of the water supply pipeline, and performing repair welding on the drain hole after the water is discharged; s6, the pipe wall, covered with the saddle-shaped water pipe connector, of the original pipeline is cut, and a water passing channel between the saddle-shaped water pipe connector and the original pipeline is obtained; s7, a valve is installed on the side, away from the original pipeline, of the saddle-shaped water pipe connector, and then the water supply pipeline connector is completed. Operation of welders can be reduced, the water cut-off operation time is shortened, the influence on water consumption of residents and enterprises within the range is reduced to the minimum, the construction procedure is simple, quality is good, and social and economic benefits are remarkable.

The utility model relates to the field of water supply network pressure protection, in particular to a water supply network pressure protection device. Comprising a body, a fixed rod is arranged at the center in a cavity of the body, a plurality of sets of buffering components are distributed on a rod arm of the fixed rod at equal intervals in the vertical direction, blades of the buffering components are rubber soft bodies, the rubber soft bodies are fan-blade-shaped, a pressure measuring assembly is arranged under the buffering components, and the pressure measuring assembly comprises a pressure gauge. Water flow is buffered and decompressed by the buffering parts uniformly distributed on the rod arm of the fixed rod through the fan-shaped rubber structure and then flows to the pressure gauge, when the pressure gauge reaches a peak value, the water flow in the body cavity is shunted by the shunting pipes communicated with the two sides of the top of the body, so that the water flow flows into the water storage parts on the two sides, and when the peak value of the pressure gauge is reduced, the water flow is discharged. And a return valve in the water storage part enables the water to flow back into the body. The water flow is buffered and shunted, the impact of the water flow is reduced, and the protection performance of the device is improved.

This application relates to a low-temperature cooling tower, belonging to the technical field of cooling equipment. It includes two tower body assemblies, a variable frequency fan assembly, an integrated circulation pipeline module, and a coordinated water distribution module. By incorporating the variable frequency fan assembly, when the cooling tower starts, the drive motor drives the shaft to rotate via bearings. The fan blades on the shaft surface then rotate at high speed, forming a stable airflow inside the outer shell. Outside air enters the tower body through the air inlet mesh on the side of the tower body assembly, exchanges heat with the internal components, and is then discharged through the top of the outer shell. The drive motor supports variable frequency adjustment, dynamically adjusting the speed based on temperature data from the temperature sensor inside the finned heat exchanger. This structure allows the fan blade speed to be adapted to actual cooling needs through variable frequency adjustment, reducing energy waste compared to a fixed-speed fan. Furthermore, the finned heat exchanger enhances heat exchange, improving cooling efficiency.

The utility model discloses a water-jet-guided laser processing machine tool capable of recycling waste water, which relates to the technical field of water-jet-guided laser processing machines and comprises a shell, and a processing table is fixed at the central position in the shell. Waste water and chippings generated by machining are guided to flow to the water outlets in the two ends through the inclined drainage grooves in the surface of the machining table and fall to the filtering assembly through the water outlets. A folded edge groove formed by three layers of flow guide plates and an upper folded edge in the filtering assembly slows down water flow impact, so that large-size chippings are precipitated and temporarily stored, and the chippings in the folded edge groove can be conveniently cleaned through an integrally-formed scraping plate; the lining frame further intercepts suspended chippings, the preliminarily filtered wastewater flows into wavy filter cloth at the top of the wastewater frame through drainage holes in the bottom of the positioning frame, the filter cloth adsorbs fine impurities by increasing the contact area, and finally the purified wastewater is collected in the wastewater frame, so that graded filtration and recovery of the processing wastewater and efficient separation and cleaning of the chippings are realized; and the water resource utilization rate and the machine tool maintenance convenience are improved.

The utility model belongs to the technical field of hydraulic engineering, and particularly relates to a cofferdam structure, which comprises a plurality of sector-ring steel sheet piles and is characterized in that the sector-ring steel sheet piles are connected through a connecting frame, and the connecting frame comprises an inner arc-shaped plate, an outer arc-shaped plate and a connecting plate. The inner arc-shaped plate and the outer arc-shaped plate are connected through the connecting plate, and the connecting frame is in sliding connection with the sector ring steel sheet pile; through guiding of the multiple arc-shaped guiding plates, water flow can flow along the radian of the arc-shaped guiding plates, the impact force of water is reduced through arc-shaped flowing, and therefore the water flow impact force borne by the fan-shaped steel sheet piles is reduced, the stability of the fan-shaped steel sheet piles is improved, and the influence of water flow impact on the cofferdam is reduced; and the height difference between the top of the arc-shaped guide plate and the horizontal plane can be kept in a relatively stable state through the gas storage box, and the situation that the protective force of the flow guide assembly is reduced due to rising of the horizontal plane is avoided.

The invention relates to the technical field of pipeline valves, in particular to a valve body capable of distributing flow. The device comprises a mounting mechanism, the mounting mechanism comprises a framework, a separation base is fixedly connected between a pair of inner side walls, away from each other, in the framework, the top of the separation base and the inner top wall of the framework define a mounting cavity, the bottom of the separation base and the inner bottom wall of the framework define a liquid passing cavity, and an isolation groove is formed in the top of the separation base; according to the valve body capable of distributing the flow, the arranged lifting mechanism drives the adaptive sealing mechanism to slide up and down in the isolation groove and is used for controlling the size of an opening of the liquid passing cavity so as to adapt to different flow distribution requirements, and when the liquid passing cavity is in a non-fully-closed state, water flow drives the bottom of the adaptive sealing mechanism to form a corner; and the buffer mechanism is used for reducing the rotating angle of the bottom of the adaptive sealing mechanism so as to reduce the water flow impact force borne by a single part of the bottom of the adaptive sealing mechanism, so that the service lives of the movable plate and the sealing plate are prolonged, and the service life of the sealing plate is prolonged.

The invention discloses an auxiliary device for relieving the dampening load of a water surface aircraft and a control method of the auxiliary device. Belongs to the technical field of landing of seaplane and comprises a telescopic rod assembly, a lifting assembly, a water sledge assembly and a steering assembly which are connected with one another. The water sledge assembly is connected with the lifting assembly through a hinge, the lifting assembly is connected with a telescopic rod of the telescopic rod assembly, the telescopic rod of the telescopic rod assembly is connected with the steering assembly, and the steering assembly is fixed to the bottom of the seaplane. Through coordinated control of the components, stable landing of the seaplane is achieved, and the impact force is effectively reduced; the device is provided with a high-precision sensor, ECU redundancy design and an intelligent control algorithm, and the dampening safety and the system robustness are remarkably improved.

The utility model discloses a buffer style stilling basin, including stilling basin body, water inlet slope, buffer groove, stilling sill, support seat, buffer mechanism, protection block and mounting mechanism, water inlet slope is fixed on stilling basin body, buffer groove is provided in stilling basin body, a plurality of stilling sill is fixed on the water inlet slope, and the support seat is fixed on the stilling basin body. The supporting seat is arranged on the side, away from the buffering groove, of the baffle sill, the buffering mechanism is arranged between the supporting seat and the baffle sill and used for buffering water flow impact force borne by the supporting seat, the protection block is arranged on the supporting seat, and the mounting mechanism is arranged between the protection block and the supporting seat and used for mounting and dismounting the protection block and the supporting seat. According to the buffer type stilling pool, mounting and dismounting of the cover plate and replacement of the protection block can be achieved through the mounting mechanism, and the problem that a stilling sill in a stilling pool in the prior art is prone to damage due to long-time water flow impact in the prior art is solved.

The utility model relates to the technical field of closestools, in particular to an intelligent closestool with a water-saving, pressure-reducing and noise-reducing valve, the rear end of an intelligent closestool body is provided with an empty slot and a water inlet pipe located in the empty slot, the pressure-reducing and noise-reducing valve fixed in the empty slot is arranged on the water inlet pipe, a time period control module is arranged in the pressure-reducing and noise-reducing valve, and the time period control module is connected with the water-saving, pressure-reducing and noise-reducing valve. The time period control module arranged in the pressure reduction and noise reduction valve can automatically distinguish day and night time periods and automatically switch to a low-pressure mode at night, so that water flow impact force during flushing is reduced, flushing noise is effectively reduced, the influence on rest of family members is avoided, and particularly the sleep environment of old people and infants is protected.

The utility model discloses a corn pulp fermentation process in the on -line metering device of bubble enemy, including the measuring jar, and the lower part of measuring jar is installed with water inlet pipe and bubble enemy granule feed pipe respectively, and the inner wall of measuring jar is installed with support, and the support is installed with the buffer board corresponding with the water outlet end of water inlet pipe, and the filter screen is installed in the measuring jar, and the aperture of filter screen is less than the maximum diameter of qualified bubble enemy granule, and the rotating rod is installed in the measuring jar, and the liftable floating plate is installed on the rotating rod, and the density of floating plate is less than the density of bubble enemy solution, and floating plate is located above the filter screen. The utility model has the beneficial effects that: through setting up support and buffer board cooperation can effectively reduce the water flow impact force of water outlet end of water inlet pipe, make the water flow of water inlet pipe steady enter the measuring jar, and the density of setting up floating plate is less than the density of bubble enemy solution can be in the process of liquid inlet and float steadily, thereby avoiding the deviation of liquid level sensor measurement caused by upper liquid level swing.

The utility model relates to the technical field of ball valves, and discloses a novel ball valve which comprises a valve body, a water inlet, a water outlet, a valve element, a shaft sleeve, a handle, an operation opening, a buffering containing cavity, a blocking piece and a limiting piece, the water inlet and the water outlet are formed in the valve body, the operation opening is formed in the valve body, and the central axis of the water inlet and the central axis of the water outlet are perpendicular to each other. The buffering containing cavity is formed in the valve body, the water inlet end of the buffering containing cavity is connected with the water inlet, the water outlet end of the buffering containing cavity is connected with the water outlet, a valve element is arranged in the buffering containing cavity, one end of the valve element is sleeved with a shaft sleeve, and the shaft sleeve is in interference fit with the operation opening of the valve body. One end of the valve element extends out of the valve body and is connected with the handle, the handle is provided with a limiting piece, the valve body is provided with a blocking piece, and the limiting piece is matched with the blocking piece. The ball valve can buffer a channel, reduce water flow impact, increase durable use and effectively block micro objects.

This invention discloses a method for preparing a superhydrophobic drag-reducing coating and its application in a manta ray-inspired submersible prototype, belonging to the technical field of underwater drag reduction and surface functional materials. The method includes: dispersing micron-sized SiO2 and nano-sized SiO2 in ethyl acetate to obtain a first dispersion; dispersing PDMS in ethyl acetate to obtain a second dispersion; mixing and stirring the first and second dispersions, then adding a curing agent and long-chain perfluoroalkyl silane PFDTES, followed by spraying and curing to obtain a PFDTES-PDMS@SiO2 coating. This invention achieves a water contact angle >150° and a roll-off angle <9° through the synergistic effect of PFDTES long-chain fluorination modification, PDMS flexible bonding, and the micro / nano dual-scale SiO2 hierarchical structure. In the manta ray-inspired submersible application, a drag reduction rate of 14.43% is achieved at a flow rate of 0.5 m / s, and the performance remains stable after 24 hours of dynamic water flow impact. This invention features a simple process, controllable cost, and is suitable for drag reduction functionalization of complex curved underwater equipment.

A cofferdam device for highway bridge construction relates to the technical field of highways and comprises a plurality of cofferdam plates, the adjacent cofferdam plates are inserted together and locked through locking mechanisms, a plurality of insertion notches are formed in two sides of each cofferdam plate, the locking mechanisms are located in the insertion notches, a dovetail insertion head is arranged at one end of each cofferdam plate, a dovetail insertion groove is formed in the other end of each cofferdam plate, and the dovetail insertion grooves are located in the dovetail insertion notches. And the dovetail plugs of the cofferdam plates can be inserted into the dovetail slots of the adjacent cofferdam plates. According to the utility model, the cofferdam plate can be quickly inserted and firmly locked, and the locking mechanism adopts a mode that the clockwise and anticlockwise threaded rods are matched with the insertion plates, so that the operation is simple and convenient, and the locking effect is reliable. And through the design that the guide holes and the insertion rods are matched with the flexible springs, rapid positioning of the locking box is achieved. Due to the self-locking function of the dovetail plugs and the slots and smooth transition of the arc-shaped connecting plates, relative movement of the cofferdam plates is effectively prevented, water flow impact is reduced, and the overall bending strength is improved.

The utility model discloses a device for collecting stream fishes and eggs, which comprises a frame, grips are symmetrically arranged on two sides of the frame, a cloth cover is arranged on the inner side of the frame, a compression ring is arranged on the inner side of the cloth cover, the cloth cover is compressed on the inner side of the frame by the compression ring, a netting is arranged at the rear end of the cloth cover, and the netting can be quickly detached and replaced. A flow guide plate is arranged at the bottom of the frame, and the flow guide plate is detachably connected with the frame. Through the design of the netting, netting gears with different mesh numbers can be rapidly replaced, and the requirements of various collection objects are met; a worker holds the grip to push the whole collecting device from the bottom of the stream, so that the effect can be achieved; a flow guide plate structure can buffer water flow impact, and physical damage to eggs and seedlings is reduced in cooperation with a bottom-attaching moving mode; the light frame reduces water disturbance during operation, and the stability of the collection environment is maintained. Through cooperative operation of two persons and the design of the movable base, the device can be quickly propelled in a stream substrate, and large-area sampling is realized.

The invention relates to the technical field of communication and transportation engineering, and discloses an overwater ground effect aircraft which comprises an aircraft body, wings, limiting rings and adjusting plates. During takeoff, extension wings extend out of hydrofoils to increase the contact area, provide extra hydrodynamic force lift force and reduce the head wave resistance, and hydraulic rods adjust the underwater depth and included angle of the hydrofoils in real time; the taxiing distance is shortened, and the takeoff power is reduced; and the hydrofoils are automatically retracted after lift-off, so that aerodynamic resistance is reduced. During landing, the hydrofoil is unfolded, the angle is adjusted and controlled to form a buffering lift force area, water entry impact is reduced, the flight control system adjusts the posture of the hydrofoil in real time, underwater additional torque is provided, posture controllability is improved, the taxiing distance is shortened, energy consumption is reduced, and stability is enhanced. When the wing ship mode is switched, pneumatic propulsion is closed, and the driving shaft drives the underwater driving paddle to drive the aircraft under low-power operation; and when the direction is adjusted, the direction of the driving paddle is changed through rotation of the first worm wheel, and the design can quickly switch modes, greatly reduce energy consumption and widen the use scene.

The invention relates to the technical field of water rescue, and discloses a portable water rescue veneer which comprises a rescue plate and photovoltaic panels, the photovoltaic panels are symmetrically and fixedly connected to the upper surface of the rescue plate, a driving assembly is arranged on the outer side of the rescue plate, and a protection assembly is arranged at the top of the rescue plate. A reinforcing assembly is arranged in the protection assembly, the driving assembly comprises a driving motor fixedly connected to the side wall of the rescue plate, frames are symmetrically and fixedly connected to the inner wall of the rescue plate, driving shells are fixedly connected to the inner walls of the frames, and a leakage plate is driven by rotating a pivot to lift a patient away from the rescue plate; due to the fact that the rescue plate encounters water flow and waves in the moving process, water is easily accumulated on the upper surface of the rescue plate, the problem that the body temperature of a patient is rapidly decreased due to the fact that the patient is soaked in water is solved, the life safety of the patient is guaranteed, and the protection performance of the equipment is improved.

The invention discloses a lure hard bait capable of being added with food bait. The lure hard bait comprises a bait body, a longitudinal partition plate and a transverse partition plate, and a containing space is formed in the bait body; the containing space in the bait body is divided by the longitudinal partition plate to form a first containing cavity and a second containing cavity. The first accommodating cavity is partitioned by the transverse partition plate to form a bait bin and a water flow bin; a water inlet is formed in the front end of the water flow bin and communicated with the outside, water flow through holes are formed in the outer wall of the water flow bin, and water enters from the water flow bin, is blocked by the longitudinal partition plate, circulates between the bait bin and the water flow bin and then flows out from the water flow through holes. A common lure bait in the market is a fake bait instead of a real traditional bait, the variety of the lure bait is single, and generally, the lure bait is a fierce fish. By adding baits, the fish bait can adapt to various fishes such as grass carps, silver carps and bighead carps.

The utility model relates to the technical field of filling devices, and discloses an automatic filling device of a stainless steel water tank, which comprises a bottom plate serving as a supporting main body, a stainless steel water tank body is fixedly connected to the left side of the top end of the bottom plate, and a connecting pipe is fixedly connected to the top end of the stainless steel water tank body. Fixing blocks are fixedly connected to the two sides of the outer wall of the connecting pipe, limiting plates are slidably connected to the inner walls of the fixing blocks, inserting blocks are fixedly connected to the opposite ends of the limiting plates, first springs are arranged between the fixing blocks and the inner walls of the limiting plates, and a connecting cover is slidably connected to the outer wall of the connecting pipe. According to the utility model, the inserting block is pressed to be separated from the interior of the connecting cover by pressing the button, and the connecting cover is taken down during separation, so that a maintainer can quickly separate the water pipe from the water tank, quickly position a fault point and repair the fault point, the downtime of equipment is shortened, and the influence on normal water use is reduced.

The invention relates to the technical field of tunnel construction, in particular to a near-water-depth supporting and retaining system for an immersed tunnel dry dock entrance and a construction method thereof.The near-water-depth supporting and retaining system comprises a dock gate, two L-shaped docking blocks, a dock ridge, a dock gate bottom plate and a water stop belt, first right-angle faces of the two docking blocks are oppositely arranged, second right-angle faces of the two docking blocks both face the near-shore side, and the dock ridge is arranged on the dock gate bottom plate; the dock bank is arranged between the bottoms of the two docking blocks, the dock bank and the two docking blocks form a concave combination surface, the dock gate bottom plate is arranged between the two docking blocks and located at the top of the shore-adjacent side of the dock bank, the dock gate bottom plate is provided with a spherical base and a thrust device, and the dock gate is arranged between the dock bank and the two docking blocks and located at the top of the dock gate bottom plate. The back-to-shore side of the dock gate is attached to the concave combination face, the waterstop is arranged between the back-to-shore side of the dock gate and the concave combination face, water flow impact force borne by the left side and the right side of the dock gate can be reduced, damage of water flow to the waterstop is reduced, and the service life of the waterstop is prolonged.

The application belongs to the technical field of urban secondary water supply equipment and automatic water tank cleaning, and discloses a distributed dual-working-condition pressurized cleaning control method, system, equipment and medium, which comprises the following steps: collecting the liquid level of a roof water tank, high-area water supply pressure, water consumption load, cleaning task, pump set state and valve position information; when cleaning is not triggered, controlling the opening of a life pressurization branch and the closing of a cleaning jet branch, driving the pump set to supply water at a constant pressure and dynamically adjusting the frequency; when cleaning is triggered, determining the working condition switching condition based on the liquid level, load, pressure, state and valve position information, allowing the closing or flow limiting of the life branch and the opening of the cleaning branch, increasing the pump set frequency and switching to the cleaning working condition; performing partitioned jet cleaning on the inside of the water tank through a cleaning nozzle; after cleaning is completed, reducing the pump set frequency, closing the cleaning branch, opening the life branch and restoring the constant pressure water supply working condition. The application realizes the dual-working-condition operation of constant pressure water supply and water tank cleaning through the same set of broadband multi-stage centrifugal pump set.

The utility model provides a low-pressure irrigation pipeline water outlet, which belongs to the technical field of irrigation pipelines, and comprises an irrigation pipe, a water outlet connecting pipe, connecting rods and slow flow cylinders, the irrigation pipe is in threaded connection with the water outlet connecting pipe, the connecting rods are fixedly arranged on the left and right side surfaces of the end part of the water outlet connecting pipe, and the slow flow cylinders are fixedly arranged on the connecting rods; through the arrangement of the water outlet connecting pipe and the slow flow cylinder, when water in the irrigation pipe flows into the water outlet connecting pipe, as the diameter of the water outlet connecting pipe is larger than that of the irrigation pipe, the effect of slowing down the water flow speed is achieved, the water discharged by the water outlet connecting pipe flows into the slow flow cylinder and then overflows from the upper portion of the slow flow cylinder for irrigation, and the water flow speed is further reduced; the water flow impact force is reduced, the water flow impact force is prevented from impacting soil in the farmland, and the situation that the farmland is uneven is prevented.

The invention provides a near-aquifer working face descending mining water control method. The water control method comprises the following steps that 1, the design number of adopted working faces and the working face replacement sequence are determined; 2, a water retaining curtain is constructed corresponding to the working face affected by the aquifer; 3, water pumping drill holes are constructed in the water retaining curtain to the aquifer, water pumping is conducted, and meanwhile grouting is conducted in the aquifer; 4, stoping is conducted upwards from the first working face at the deepest position of the coal seam, after stoping is conducted on the first working face, water inflow detection is conducted on the next working face, and water drainage work is conducted in time; 5, before the last working face is stoped, water inflow detection is conducted on the last working face and the adjacent roadways, and water drainage work is conducted; and if it is detected that the water inflow is large, grouting treatment is supplemented within the range of the water retaining curtain. According to the water control method, the construction cost is reduced, the construction efficiency is improved, and the ecological environment is protected while the effect that no water is stored in the water retaining curtain is achieved.

The utility model belongs to the technical field of safety protection of gas collection stations in mountainous areas, and particularly relates to a negative pressure tank and an emergency spraying system. The negative pressure tank comprises a tank body, a water inlet and a water outlet, the water inlet and the water outlet are communicated with the tank body, a partition plate is arranged in the tank body and divides an inner cavity of the tank body into a first cavity used for being communicated with the conveying pump through the water outlet and a second cavity communicated with the water inlet, and the volume of the first cavity is larger than that of the second cavity. And an overflowing channel for communicating the first chamber with the second chamber is arranged on the partition plate or between the partition plate and the top of the tank body. The inner cavity of the tank body is divided into the first cavity and the second cavity through the partition plate, so that the volume of the first cavity is larger than that of the second cavity, the pumping-out phenomenon of the conveying pump during water conveying is avoided, and the water conveying continuity is improved; during working, water flows through the second cavity and then is injected into the first cavity through the flow channel, water flow impact is relieved, the liquid impact phenomenon is avoided, then stable liquid flow can be provided for the downstream, and the continuous conveying stability of water conveying is improved.

The utility model relates to the technical field of intercepting wells, and provides an intercepting well with a sand setting and separating function, which comprises an intercepting well body, the flow guide table is fixedly connected to the lower end of the inner wall of the intercepting well body, a partition plate is fixedly connected to the inner wall of the intercepting well body on one side of the flow guide table, and a fine filter plate is arranged at the top end of the partition plate; the sludge discharging assembly is assembled at the lower end of one side in the intercepting well body; the filter frame is slidably connected to one side of the interior of the intercepting well body, the upper end of one side of the intercepting well body is fixedly connected with a water inlet pipe, the lower end of the other side of the intercepting well body is fixedly connected with a water drainage pipe, and one side of the front face of the intercepting well body is fixedly connected with an overflow pipe; the buffer assembly is assembled on the inner top wall of the filter frame, settled silt can be conveyed and discharged through the arranged silt discharging assembly, the complexity and inconvenience of manual desilting are avoided, the fine filter plate is arranged to prevent raised silt from being discharged through the drainage pipe, and the practicability of the device is improved.

The utility model discloses a gate type submersible axial flow pump which comprises a submersible pump, the submersible pump is fixedly installed on a gate, a flap valve is installed at the position of a water outlet of the submersible pump, meanwhile, a sundry isolation assembly is installed at the position of a water inlet of the submersible pump, and the sundry isolation assembly comprises a fixing plate fixed to the gate in a screwed mode. A buffer box is fixedly mounted on the surface of the fixed plate, a top panel is arranged at the top of the buffer box, a liquid inlet is formed in the top panel, a filter box is screwed and fixed on the surface of the top panel, an inlet is formed in the upper side in the filter box, a filter plate is inserted into the inlet, and multiple groups of filter holes are uniformly formed in the filter plate. According to the gate type submersible axial flow pump, when the submersible pump is submerged in a water body, the sundry isolation assembly is integrally submerged in the water body, the arrangement of the filter plate can isolate aquatic plants in the water body, the aquatic plants are prevented from being wound on the impeller, the submersible pump is protected, and the service life of the submersible pump is prolonged.

The application relates to a multifunctional airbag system for assisting a cross-medium vehicle to quickly cross media, which is suitable for a rotary-wing cross-medium vehicle and comprises an airbag buffer device, an airbag ballast device and a multi-airbag air volume unified control module. The airbag buffer device is arranged at the head of the cross-medium vehicle, the airbag ballast device is arranged at the middle section of the cross-medium vehicle, and the multi-airbag air volume unified control module is arranged at the tail of the cross-medium vehicle. The cross-medium vehicle is provided with three functions of underwater attitude adjustment, high-speed water entry buffering and rapid water exit assisting, the airbag ballast device replaces a traditional ballast water system, the inflation amount of the ballast airbag and the propeller power are controlled, and the functions of the cross-medium vehicle in underwater attitude adjustment, such as floating, diving and rotating, and the function of zero-energy consumption suspension in water can be realized.

The utility model relates to the technical field of drainage devices, and provides a drainage device for building construction, which comprises a vehicle body, a support frame and a water tank, the support frame is fixed on the vehicle body, and the water tank is fixed on the support frame; a water pumping pipe frame is arranged at the bottom of the vehicle body, a sewage pump is fixed to the vehicle body, a water pumping hose is communicated between the water inlet end of the sewage pump and the water pumping pipe frame, and a water outlet pipe communicated with the sewage pump is fixed to the water outlet end of the sewage pump and provided with an electromagnetic valve. The water pumping pipe frame has the advantages that water at multiple sites in a ditch can be pumped away through the water pumping pipe frame, especially for the ditch with accumulated water at only several sites, the water pumping efficiency is higher, water flow impact of the first filter screen and the second filter screen can be reduced, the service life of the first filter screen and the second filter screen is prolonged, water in the water tank can be filtered twice, and the water pumping efficiency is improved. Water discharged from the water tank is prevented from containing a large amount of silt, and environmental pollution can be reduced.

This invention provides an attapulgite-based permeable reactive barrier and method for remediating sites contaminated with halogenated hydrocarbons, belonging to the field of groundwater treatment technology. It includes a reactive barrier main body perpendicular to the water flow direction, a front guide wall located at the water inlet of the reactive barrier main body, a rear guide wall located at the water outlet of the reactive barrier main body and symmetrically distributed with the front guide wall, and several attapulgite filter media modules installed on the reactive barrier main body. A first and second mounting frame with a wave-shaped structure can extend the water flow path, increasing the contact time between pollutants and the attapulgite filter media modules. Simultaneously, a second mounting frame is provided on the outlet side of each first mounting frame, and the second mounting frame is equipped with a rotating mounting frame for installing the attapulgite filter media modules. This allows the water to flow through the reactive barrier main body more quickly by rotating the mounting frame, ensuring purification effect while improving the overall treatment efficiency of the permeable reactive barrier.