15results about How to "Improve water delivery efficiency" patented technology

The utility model discloses a corrosion-resistant metal lining socket type multilayer pipe, which belongs to the technical field of pipes and comprises an inner pipe, a middle layer and an outer pipe which are sequentially sleeved from inside to outside, steps and / or grooves are arranged on the inner wall of a socket end, and the inner pipe, the middle layer and the outer pipe are adhered to form the pipe or compressed to form the pipe. The outer pipe comprises a socket end, a pipe body and a spigot end which are connected in sequence, the outer pipe is made of metal, the inner pipe is made of a corrosion-resistant material, each end of the pipe is provided with a sealing layer and a lining ring made of a corrosion-resistant metal material, and the length of each lining ring extending into the pipe is not less than 20mm. The anti-corrosion pipeline is good in anti-corrosion effect, and the water conveying efficiency of the pipeline is improved. The corrosion-resistant metal lining ring prevents each layer of material from being stripped; and the strength and the deformation resistance of the pipe are improved.

The invention relates to the field of fire hoses, and provides a flame-retardant high-strength fire hose and a preparation method thereof.The fire hose sequentially comprises an outer protection layer, a flame-retardant layer, a woven layer, a reinforcing layer and a lining layer from outside to inside; the flame-retardant layer contains a surface-modified magnesium hydroxide micro-tube coated flame retardant, so that the flame-retardant effect is enhanced; the reinforcing layer contains the surface-modified bead-shaped silicon carbide nanowires, so that the mechanical property of the reinforcing layer can be remarkably improved. The five-layer composite structure and the design of multiple functional materials are adopted, comprehensive improvement of flame retardance, mechanical property, use convenience and the like is achieved, the problem that a traditional fire hose is insufficient in flame retardance and mechanical property is solved, and the fire hose has wide application value.

The invention discloses a sand blocking and mist catching protection system and method for a desert area. The sand blocking and mist catching protection system comprises mist catching towers, shed-shaped sand blocking and mist catching barriers, sand fixing and afforestation covering plates and evaporated water collecting devices which are arranged in a first strip-shaped area, a second strip-shaped area, a third strip-shaped area and a fourth strip-shaped area correspondingly. The first strip-shaped area, the second strip-shaped area, the third strip-shaped area and the fourth strip-shaped area are sequentially arranged in the upwind direction or the peripheral area of a protected object in the prevailing wind direction, are parallel to one another and are perpendicular to the prevailing wind direction. The mist catching tower collects water vapor in airflow at a high position, meanwhile, the shed-shaped sand-blocking mist catching barrier collects water vapor in airflow at the middle-lower layer, the water vapor at different heights is caught, and the mist catching efficiency is improved. The mist catching tower and the shed-shaped sand-blocking mist catching barrier block a part of sand storm, and the sand-fixing afforestation covering plate fixes a part of quicksand, so that an evaporated water collecting device and a protection object in the downwind direction can be effectively protected, and sand storm erosion is avoided.

The present application relates to the technical field of cooling of vehicle power components, and particularly relates to a water pump rotor for cooling vehicle power components, which comprises a rotor (1) and a wheel disc (2) fixed to the rotor (1), and a plurality of blade shafts (5) circumferentially distributed on the wheel disc (2), one end of each blade shaft (5) extending out of a front end surface of the wheel disc (2) and being fixed with a blade (4), and the other end of each blade shaft (5) extending out of a rear end surface of the wheel disc (2) and being connected with an automatic rotating device, the automatic rotating device driving the blade (4) to rotate through the blade shaft (5). The present application can automatically change the inclination angle of the blade when rotating at high speed or low speed, so as to promote the improvement or reduction of water delivery efficiency, effectively meet the use requirements, and meanwhile ensure the stability of the blade when rotating at low speed or high speed.

The utility model provides a cleaning device, which relates to the technical field of cleaning, and comprises a water delivery component, a spraying component and a driving component, the water delivery component comprises a first shell, a vortex component is arranged in the first shell, the spraying component comprises a second shell and a nozzle, a swing component is arranged in the second shell, and the driving component drives the swing component to move. Further, the spray head swings; the first shell, the second shell and the spray head are sequentially communicated in the water flow direction. Vortex can be generated through the vortex component, water flow resistance is reduced, water flow speed and water pressure are improved, water conveying efficiency is improved, the spray head swings up and down through the swing component, dead corners are reduced in the spray washing process, and the cleaning effect is good.

The application relates to the technical field of urban intelligent water supply, in particular to a city water supply pipeline repairing robot, which comprises a carrying vehicle, a feeding port is formed in one side of the carrying vehicle, a coiling mechanism is arranged in the carrying vehicle, the coiling mechanism is used for coiling and pressing a stainless steel lining plate into a circular ring structure, an inner lining mechanism is arranged at one side of the coiling mechanism and located at one side of the carrying vehicle, and the inner lining mechanism is used for lining the stainless steel lining plate of the circular ring structure on the inner wall of a water supply pipeline. The city water supply pipeline repairing robot can fully and effectively comprehensively repair the corroded part on the inner wall of the water supply pipeline by lining a layer of circular ring-shaped stainless steel lining plate on the inner wall of the water supply pipeline, thereby guaranteeing the normal water conveying process of the water supply pipeline.

The utility model discloses a water delivery structure applied in a swash plate type plunger water pump, which comprises a stator assembly and a rotor assembly arranged in the stator assembly, and a plurality of plunger structures are arranged on the rotor assembly. The stator assembly is internally provided with a swash plate jacking structure used for controlling the multiple plunger structures to reciprocate in turn in the turnover state, a water inlet is formed in one side of the stator assembly, the resistance generated when water flow enters the water pump is reduced, and therefore the water conveying efficiency of the water pump is improved. The rotary filter screen structure in the water outlet can filter out water flowing out, the impurities in the water are prevented from entering a follow-up water conveying pipeline, other equipment is protected, and the maintenance cost caused by the fact that the impurities block the pipeline or damage the equipment is reduced.

This utility model relates to the field of water pumping station technology and discloses a modular pumping station unit suitable for low-lift, long-distance water transmission. It includes a control component, with three connecting pipes fixedly connected to the rear of the control component. A water pump component is fixedly connected to the ends of the three connecting pipes. An inlet component is fixedly connected to the left side of the water pump component, and a water hammer elimination component is fixedly connected to the rear of the water pump component. A booster box is fixedly connected to the end of the water hammer elimination component, which includes a water transmission pipe. This utility model adopts a modular, partitioned design, linking and combining functional modules such as the control component, water pump component, and booster box. It can achieve partitioned pressurized water transmission for low-lift, long-distance water transmission scenarios. The modules are quickly connected via connecting pipes and other structures, facilitating installation and maintenance, effectively solving the problem of insufficient pressure during long-distance water transmission, and improving water transmission efficiency.

The invention discloses a method for determining an energy dissipation mode of a double-line ship lock water delivery system, which comprises the following steps of: S1, respectively arranging a single open trench and a double open trench at an outlet of a branch hole on each side in a ship lock chamber, and arranging a baffle sill in the single open trench to form an energy dissipation structure I; a water passing hole is formed in a partition wall between the double open trenches, the size parameter of the water passing hole is determined, and a second energy dissipation structure is formed; s2, establishing a hydraulic physical model of the water delivery system according to the design parameters and the energy dissipation structure of the double-line ship lock water delivery system; s3, simulating water filling or water drainage of the ship in the designed water head lower lock chamber, and performing ship mooring force test; judging whether a ship berthing standard requirement is met or not during operation; and if the standard requirement is not met, the second energy dissipation structure is adjusted, the steps S2 to S3 are repeated till the ship berthing standard requirement is met, and the energy dissipation structure of the double-line ship lock water delivery system is obtained. The energy dissipation structure of the double-line ship lock water delivery system is determined, the stable berthing condition of ships in the lock chamber is guaranteed, the water delivery efficiency is also improved, and therefore the stable berthing condition of the ships in the lock chamber is improved.

The duplex pump comprises a pump body and a sealing plug, the pump body is provided with a first volute chamber, a second volute chamber and a liquid outlet pipe, the liquid outlet pipe is provided with a first liquid inlet and a second liquid inlet, the first end face of the first liquid inlet and the second end face of the second liquid inlet are both located on the inner wall of the liquid outlet pipe, and the liquid outlet pipe is further provided with a machining opening; the surface roughness of the first end face and the second end face can be reduced in a machining mode through the machining opening; the sealing plug covers the machining opening in a sealing mode. The machining opening is formed in the liquid outlet pipe, the first end face and the second end face are machined through the machining opening, the surface precision of the first end face and the second end face is improved, the valve is tightly attached to the first end face or the second end face, untight sealing and medium backflow are avoided, and the water conveying efficiency of the pump is improved. And meanwhile, the requirement of the control valve on the extrusion sealing pressing force can be reduced, and the sealing reliability is improved. The machining opening is sealed through the sealing plug, so that normal use of the pump is not affected by the machining opening.

This utility model relates to the field of water pump impeller technology and discloses a high-efficiency water pump impeller structure based on CFD analysis. It aims to solve the problems of large hydraulic losses and low efficiency in traditional impellers. Its core structure includes a coupling, on which a water pump impeller mechanism and an auxiliary flow guiding mechanism are integrated to form a coordinated water delivery system. The coupling has a water pump impeller mechanism and an auxiliary flow guiding mechanism on its surface. In the water pump impeller mechanism, the inner sleeve is fixed to the coupling, and the outer sleeve is connected to the inner sleeve's insertion slot via a plug-in block. The first and second water pump impeller blades outside the outer sleeve are staggered and alternately distributed, with tail flow holes at the outer ends of the blades. A limiting hole and a limiting top cover are provided at the top of the coupling. The base plate of the auxiliary flow guiding mechanism is mounted on the coupling. The flow guiding shell and the flow guiding cover are connected by a mounting base and bolts. The flow guiding shell has drainage holes. This structure, optimized by CFD, can reduce water flow interference and eddy current losses, improve water delivery efficiency, and is easy to disassemble and maintain, adapting to different working conditions.

The invention belongs to the technical field of old aqueduct protection and performance improvement, and particularly relates to a method for improving old aqueduct internode anti-seismic performance and overall heat preservation anti-permeability performance, by optimizing old aqueduct internode connection, local treatment is conducted on the surface of an old aqueduct concrete aqueduct wall, so that the old aqueduct concrete aqueduct wall is clean and flat, and the overall aqueduct anti-seismic performance is improved. Then, screws are planted on the two sides of the old concrete aqueduct intersections, and after the screws are planted, thin-layer weather-proof steel plate dampers are installed through nuts, so that the anti-seismic property of the old aqueduct intersections is improved; then the concrete tank wall of the old aqueduct is optimized, a heat preservation layer is additionally arranged on the surface of the concrete tank wall of the old aqueduct, and the overall heat preservation performance of the old aqueduct is improved; and finally, a waterproof layer is painted on the surface of the concrete aqueduct wall heat preservation layer of the old aqueduct, and the overall anti-seepage performance of the old aqueduct is improved. By means of the method, staged energy consumption can be achieved, the overall anti-seismic performance, the thermal insulation performance and the anti-permeability performance are improved, and meanwhile original appearance protection can be achieved to the maximum extent.

The utility model provides a two-way pump, and belongs to the technical field of water pumps. A two-way pump comprises a pump shell, a pump head provided with a first water conveying hole and a second water conveying hole is connected to the pump shell, an impeller capable of rotating and a flow guide piece connected with the pump shell in a sealed mode are arranged between the pump shell and the pump head, the impeller is located above the flow guide piece, the flow guide piece is provided with an annular flow guide channel, and a partition plate is arranged between the first water conveying hole and the second water conveying hole. One side of the partition plate is provided with a first water conveying channel communicated with the first water conveying hole, the other side of the partition plate is provided with a second water conveying channel communicated with the second water conveying hole, and the first water conveying channel and the second water conveying channel are vertically arranged and communicated with the flow guide channel. The annular flow guide channel enables the impeller to pump water during forward rotation and reverse rotation, the first water conveying channel and the second water conveying channel are vertically arranged, the position of the annular flow guide channel enables the water conveying efficiency of the impeller during forward rotation or reverse rotation to be the same, and the water conveying efficiency of the pump is guaranteed.

The utility model discloses a straight pipe adopting a corrosion-resistant lining, which comprises an outer pipe and an inner pipe made of a corrosion-resistant material, two ends of the outer pipe are provided with socket parts, the middle of the outer pipe is provided with a straight pipe part, the straight pipe part and the socket parts are coaxially connected, the inner pipe covers the inner wall of the outer pipe, the outer walls of the socket parts at the two ends of the outer pipe and the end surfaces of the socket parts, and the inner pipe comprises an inner sleeve and two socket sleeves. The outer pipe and the inner sleeve are cylindrical, the inner sleeve is sleeved with the outer pipe, and the two inserting opening sleeves cover the outer walls of the two inserting opening parts respectively. The inner pipe made of the corrosion-resistant material covers the inner wall of the outer pipe, the end faces of the spigot parts at the two ends and the outer walls of the spigot parts, when liquid is conveyed, the part, making contact with the pipe, of the liquid is completely wrapped by the corrosion-resistant material, a good corrosion-resistant effect is achieved, the two adjacent straight pipes are connected through the double-bearing pipe fitting made of the corrosion-resistant material, and when the two adjacent straight pipes are connected, the corrosion-resistant effect is good. The inner ring of the sealing ring tightly presses the spigot sleeve on the outer wall of the spigot part to prevent the inner pipe from falling off, and meanwhile layering caused by direct impact of water flow on the port of the straight pipe is prevented.