53 results about "Gravity flow" patented technology

The present application relates to the field of liquor storage, in order to prevent air blockage and reduce the energy consumption of storage, an intelligent multi-stage liquor storage system based on potential energy driving and a control method are provided, an integrated non-powered gravity flow storage architecture is constructed, which fully utilizes the height difference to realize gravity conveying throughout the process to replace the wine pump, achieving the purpose of energy saving and consumption reduction; and through the integration of special buffer exhaust device, intelligent sensing and control system, the air blockage risk in the gravity flow process is fundamentally prevented and eliminated, and the process stability is ensured. At the same time, the system designs parallel conveying channels for different grades of base liquor, realizes the automation and refinement of multi-path shunting and collecting operation, effectively prevents cross contamination and improves efficiency.

This invention relates to the field of marine lubricating oil technology, providing a marine lubricating oil cooling system and a vessel suitable for low-temperature environments. The aforementioned marine lubricating oil cooling system for low-temperature environments includes: an oil tank, a cooler, an ejector pump, a gravity flow generator, a pump, and a lubricating oil user. The oil tank, cooler, ejector pump, and lubricating oil user are sequentially connected to form a lubricating oil circulation loop. The cooler has a shell side and a tube side, one of which is connected to the oil tank, and the other is connected to the gravity flow generator. The pump inlet is connected to the oil tank, and the pump outlet is connected to the ejector pump. By incorporating the oil tank, cooler, ejector pump, lubricating oil user, and pump, this marine lubricating oil cooling system allows the vessel to utilize the pumped lubricating oil as a medium for ejecting and cooling when navigating in polar low-temperature seawater environments. Furthermore, the lubricating oil user can heat the lubricating oil during the circulation process, ensuring a stable lubricating oil supply.

The application relates to the technical field of ecological environment engineering, and discloses a modular rain flood resource deep purification and underground storage integrated device, which comprises a radial shear purification module, a hydraulic closed locking assembly and a spiral push flow storage module which are coaxially and communicatively arranged from top to bottom; the radial shear purification module comprises a first shell, a composite filter material layer filled in the first shell, an inverted funnel-shaped flow guide cover arranged above the composite filter material layer and a central siphon assembly, a horizontal annular flow channel is formed between the lower edge of the inverted funnel-shaped flow guide cover and the upper surface of the composite filter material layer; the spiral push flow storage module comprises a second shell and a spiral flow guide plate arranged in the second shell. Through cooperation of the inverted funnel-shaped flow guide cover and the central siphon assembly, vertical gravity flow during cleaning is converted into horizontal radial converging flow along the filter material surface, the integrity of a biofilm structure is maintained, and long-term stable operation of the filter layer can be realized without external power.

The integrated prevention and treatment method of the burned rock water disaster of the present application proposes the concept of combination of resistance and permeation and advanced active prevention and treatment, breaks the thinking stereotype of traditional coal seam roof water disaster independently relying on water drainage and full section curtain interception, and creates a new concept of active comprehensive prevention and treatment of dynamic supply interception, drainage and dry static reserves, and combined use of local bypass flow. The problems of multiple solutions of geophysical prospecting and limitations of drilling are scientifically solved, and for the first time, the fine quantitative delineation of the strong water-conducting burned rock zone is realized from two-dimensional range to three-dimensional water-rich structure. A gravity drainage of an inclined borehole, a roadway catchment, and a gravity flow of a catchment channel form a passive underground water drainage link. The difficulty of drainage and dryness in treating the burned rock water disaster is reduced, and due to the use of the passive underground water drainage link of the gravity flow of the catchment channel, the cost is further reduced. The collected clean water flows into the external clean water warehouse, realizes repeated use, reduces resource waste, and is suitable for large-scale use and promotion in the field of coal mine water disaster prevention and treatment technology.

This utility model relates to the field of zucchini seed processing technology, specifically disclosing a stirring device for zucchini seed processing, including a mounting frame and a drum with a feeding port. Steering columns are rotatably connected to both the front and rear sides of the inner wall of the mounting frame, and a connecting cylinder is fixedly connected between the two steering columns. A bearing is fixedly connected through the left end of the connecting cylinder, and a turntable fixedly connected to the left end of the drum is fixedly connected inside the bearing. A support ring is fixedly connected to the inner wall of the connecting cylinder. Material is directly fed into the drum through a feeding hopper, and after completion, it returns to a horizontal position, achieving rapid alignment and filling, preventing material spillage, and significantly improving feeding efficiency and ease of operation. During unloading, the drum is tilted at a certain angle by reverse drive, and the internal material automatically slides out of the feeding port along the inner wall. Combined with the drum's rotational inertia, the material is accelerated to empty. Through the synergistic effect of gravity flow and angle adjustment, residue-free unloading is achieved, eliminating the need for manual cleaning, simplifying the process, and improving discharge stability.

This invention proposes a siphon-assisted drainage device and method for urban flooding in the field of water conservancy. It includes a flow pump, an energy tank, an underground water collection tank, a check valve, a siphon pipe, and a siphon self-control valve. The siphon pipe inlet starts from the underground water collection tank, passes through the road surface, slope, and then crosses the upper part of the river embankment, spans the pedestrian walkway, and enters the riverbed through a siphon riser. The outlet is connected to the siphon self-control valve. The underground water collection tank is located below the road surface, and its upper part is equipped with a check valve that automatically closes when full. An energy tank is also located at the top of the underground water collection tank. When water accumulates on the road surface, the flow pump is activated to pump water into the energy tank. A level difference exists between the energy tank and the top of the siphon pipe, creating gravity flow. When the water flows to the siphon self-control valve, the outlet automatically closes, allowing water to exit but preventing air from entering. This creates a closed space in the siphon pipe system, where high-level gravity flow and high-level siphon flow are generated simultaneously under the influence of gravity flow. This method is suitable for application as a siphon-assisted drainage device and method for urban flooding.

The utility model relates to sewage treatment dosing technical field, and disclose a gravity flow automatic dosing device, include: jar body, top plate, top plate fixed mounting in the top of jar body. The utility model discloses through jar body, drive motor and stirring subassembly etc. Structure mutual cooperation, when using, can utilize drive motor drive stirring subassembly in the driving gear, driven gear, spindle and stirring blade collaborative operation, the polymeric ferric sulfate etc. Pharmaceutical solution in jar body is fully and comprehensively stirred, in this way, effectively solved the problem that the solute precipitated in the jar body bottom because of the slow solution adding speed, long standing time when the pharmaceutical preparation and storage, avoided the precipitation to reduce the solution concentration uniformity, influence pharmaceutical dosing accuracy, and the situation that the precipitation accumulation reduces jar body effective volume, reduces the device operating efficiency, guaranteed the consistency of solution concentration, improved the overall operation efficiency of dosing device.

This invention belongs to the field of material laying technology and discloses a laying device for pouring a foundation slab, comprising: a movable base; a storage box fixed to the top of the movable base for storing materials, the bottom of which is connected to a discharge pipe; a discharge mechanism for pressing down the materials in the storage box to pour them through the discharge pipe; and a drying component connected to the movable base and located behind the discharge pipe for drying the poured materials. This invention uses a discharge mechanism to press down the materials in the storage box and discharge them through the discharge pipe for pouring, actively applying pressure to assist the discharge and avoiding reliance solely on gravity flow. Furthermore, the drying component provides timely drying of the construction materials, significantly improving the material curing rate and ensuring construction quality.

This invention discloses a composite reinforcement system and method for through-anchor cables and grouting in soft, thick coal seams, relating to the field of coal mine roadway surrounding rock control technology. It includes a coal pillar goaf-side surface sealing module and a through-anchor cable reinforcement module. The goaf-side surface sealing module constructs a high-level self-flowing grouting hole at the top of the non-goaf side of the coal pillar and injects quick-setting grout, utilizing gravity flow to form a grout-stopping curtain on the goaf-side surface. The through-anchor cable reinforcement module includes an anchor cable body, a distal anchoring mechanism, a proximal anchoring mechanism, and a grouting mechanism. The anchor cable body is inserted into an anchor cable borehole penetrating the coal pillar. The distal anchoring mechanism is anchored to the goaf-side surface, and the proximal anchoring mechanism is anchored to the non-goaf-side surface. The grouting mechanism injects grout into the anchor cable borehole to form a full-length anchor body. This invention achieves bidirectional prestressed anchoring under unilateral construction conditions, effectively controls grout loss, and enables the anchor cable and grouting body to form a synergistic full-length anchoring structure, significantly improving the stability of small coal pillars.

The present application relates to sewage treatment technical field, disclose a kind of integrated high-precision deslagging and desanding aeration system of sewage treatment plant, including sewage treatment tank, its front end is equipped with water inlet, channel is equipped in pool along the direction of water flow extension, water inlet is connected with channel inlet end by flange one;Inner inflow type fine grid, by bolt fixed in channel inner wall front end, grid gap≤5mm;High-efficiency grit aeration tank, it is set to sewage treatment tank rear end, its water inlet is communicated with channel outlet end by gravity flow pipeline, water outlet is connected with the water outlet pipeline of sewage treatment tank front end by flange two;Rotational flow aeration system, integrated in high-efficiency grit aeration tank.The present application is installed by inner inflow type fine grid, rotational flow aeration system and high-efficiency grit tank in sewage treatment tank, realize integration, it is favorable to reduce floor area, especially suitable for underground sewage treatment plant or upgrading project.

This invention discloses a system and method for collecting and treating domestic sewage from riverside houses in rural areas, belonging to the field of ecological environmental protection technology. It solves the problems of high construction difficulty, high construction and maintenance costs, and poor adaptability to flood conditions associated with existing sewage treatment technologies for stilted houses along rivers. The system includes a front-end flushing section, a sealed sewage collection section, a sewage lifting section, and a system control section. The sewage collection section adopts a sealed sewage collection well with a sedimentation hopper and a high-level ventilated pipe design, eliminating the need for pre-treatment facilities such as riverside septic tanks and grease traps. The system has two working modes: gravity flow collection and intelligent flushing. It can automatically identify pipe blockages and complete self-flushing, while accurately locating the blockage. This invention has excellent flood control and seepage resistance, low construction and maintenance costs, and is suitable for the sewage treatment needs of riverside rural houses in plain river networks, making it highly applicable for engineering projects.

This invention relates to the field of coating preparation, specifically to a method for preparing a wear-resistant coating on the surface of a ball valve core based on hot-dip plating and rotary extrusion. The method includes: cleaning and preheating the ball core substrate; heating a self-fluxing alloy material to a molten state to obtain a plating solution; clamping the ball core substrate with a fixture, immersing the lower half of the ball core substrate in the plating solution; wherein, at a position where the ball core substrate detaches from the plating solution surface, a contouring extrusion roller matching the curvature of the outer spherical surface of the ball core substrate is arranged, maintaining a rigid gap between the contouring extrusion roller and the ball core substrate; the ball core substrate rotates uniformly around its own axis, skimming over the plating solution surface, and the adhering plating solution forms a semi-solid coating before reaching the rigid gap due to the supercooling of the ball core substrate; the semi-solid coating is radially extruded by the contouring extrusion roller during its passage through the rigid gap, and after air cooling, a wear-resistant coating is obtained. This invention overcomes gravity flow, eliminates the secondary sintering process, and achieves coating densification and precise contouring during immersion plating.

This invention belongs to the field of optical cold processing technology and discloses a high-precision optical lens processing device, including a processing table, a turntable assembly for mounting optical lenses, and a polishing cover that works with the turntable assembly to polish the optical lenses. The bottom of the turntable assembly is equipped with a filter plate and a filter cylinder for filtering the polishing fluid. An annular cavity for rotating the filter cylinder is formed inside the processing table. A recovery pipe is connected to one side of the bottom of the annular cavity, and the end of the recovery pipe away from the annular cavity is connected to a storage tank. During operation, the polishing waste fluid first passes through the filter plate to intercept large particles, and then enters the high-speed rotating filter cylinder. Strong centrifugal force actively separates micron-sized impurities, completely replacing the traditional inefficient filtration method that relies on gravity flow. This combination significantly improves the filtration throughput and fluid supply stability, ensuring that the polishing interface always receives a sufficient amount of clean polishing fluid, thus guaranteeing the yield and processing speed of high-precision optical lenses.

This invention discloses a top-mounted liquid-storage gravity-circulating battery thermal management and fire suppression system and method. The system includes a battery pack housing, a controller, and a radiator. A battery module is housed within the battery pack housing. A liquid storage tank is mounted on the battery module, connected to a vertical flow channel. A main control valve and an emergency release valve are connected in parallel between the liquid storage tank and the vertical flow channel. The vertical flow channel is located within the battery module. A collection tank is located at the lower end of the vertical flow channel. A circulation pump is located between the collection tank and the liquid storage tank. A heating device is installed in the pipeline between the liquid storage tank or the circulation pump and the liquid storage tank. The method includes: a cooling mode utilizing gravity-flowing coolant for heat dissipation; a heating mode preheating the coolant before circulating it for heating; a heat preservation mode closing the valve and utilizing air insulation; and a fire suppression tiered release mode first opening the main control valve for a level one warning release, and then opening the emergency release valve to achieve level two full-volume immersion fire suppression if thermal runaway worsens. This invention achieves a high degree of integration of cooling, heating, heat preservation, tiered fire suppression, and self-inspection.

Disclosed is a method and system for coupling sodium slag purification process to prepare calcium-based hydrogen storage material, in which dry sodium slag is sent into a horizontal tube furnace reactor under inert atmosphere protection, the temperature is controlled at 850-950 DEG C, and the system pressure is controlled at 5-20 kPa, so that metallic sodium is volatilized to form a sodium vapor-inert gas mixed gas stream, and calcium and impurities remain in solid form, realizing separation of sodium and calcium; the mixed gas stream is sent into a first condenser and a second condenser in sequence, the condensing temperature difference is controlled at 100-200 DEG C, metallic sodium vapor is gradually condensed into liquid metallic sodium, which is collected into a sodium collection tank by gravity flow for recycling, and the solid-phase calcium and impurities remaining in the horizontal tube furnace reactor are used as calcium-based precursors; hydrogen is introduced into the horizontal tube furnace reactor, the temperature is controlled at 580-680 DEG C, the hydrogen pressure is controlled at 5-20 kPa, and the reaction is carried out for 2-4 hours, so that the solid-phase calcium is subjected to a hydrogenation reaction to obtain calcium-based hydrogen storage material containing CaH2.

The utility model relates to rural sewage resource utilization technical field, especially a kind of rural sewage resource utilization facility, by multiple single module assembly into fabricated reinforced concrete prefabricated module combination, the space of storing, processing and utilizing sewage is formed in fabricated reinforced concrete prefabricated module combination.In the mode of gravity flow, water flow transports sewage to the space for storage, and utilizes the self-weight of sewage and multiple single module to compress fabricated reinforced concrete prefabricated module combination, which ensures its stability and realizes the setting of storage, processing and utilization space of sewage in special geology.The utility model adopts pile foundation in advance, and then carries out the rapid assembly of resource utilization facility to realize the construction of resource utilization facility in special geological area with high groundwater level, more silt geology or containing free water surface pond, river and the like, to solve the problem that there is no available land for constructing resource utilization facility after land right in existing rural area.

This application provides a rice harvester threshing and cleaning device based on adaptive wind speed adjustment, relating to the field of agricultural machinery. It includes an inclined threshing and cleaning device, a re-threshing device for impurities, an air guide device, and an adaptive control unit. The inclined threshing and cleaning device comprises a threshing unit and a cleaning unit. The air guide device is located at the cleaning unit to create a cleaning airflow. The re-threshing device for impurities is located below the screen surface of the cleaning unit to directly transport unthreshed impurities falling from the cleaning unit to the threshing unit for re-threshing. This application utilizes an inclined arrangement of the threshing drum to create a natural stratification and gravity flow effect within the drum, reducing material retention and blockage, and ensuring a continuous and stable threshing process. The widened outlet at the tail of the screen increases the airflow channel, creating a forward airflow in the cleaning zone, resulting in more uniform air pressure distribution and improved light impurity discharge efficiency. Impurities directly enter the drum's re-threshing zone through a dedicated re-threshing channel, eliminating the need for further cleaning via screen return.

This invention provides a core particle gravity flow deposition film, its preparation method, and its application. The preparation method includes the following steps: (1) grinding and screening core particles sequentially to obtain core nanoparticles; (2) mixing water and the core nanoparticles obtained in step (1) to obtain a suspension; (3) transferring the suspension obtained in step (2) to a solid matrix plate, allowing it to settle, and drying to obtain the core particle gravity flow deposition film. The core particle gravity flow deposition film provided by this invention can achieve accurate analysis of reservoir core permeation characteristics and has broad application scenarios in the field of reservoir wettability and permeation research.

The application belongs to the technical field of nuclear power, and particularly relates to a boron and water supplement system and method for a spent fuel pool of a nuclear power plant. In view of the problems in the prior art, the application proposes, in the event of an extreme accident of complete loss of in-plant power and borate solution leakage, supplementing the borate solution by using a spare liquid storage space in the existing facilities of the nuclear power plant through gravity flow, which does not require power supply, and supplementing water by combining with external power equipment. The fatal defect that the prior art cannot supplement boron reserves in the extreme accident is effectively solved, and the risk of spent fuel returning to criticality due to the decrease of borate concentration caused by water supplementing alone is avoided. Without the need of large-scale modification of the existing equipment of the nuclear power plant, the modification can be realized only by optimizing the connection mode and operation logic, and the modification cost is low and the implementation period is short.

The present application relates to the technical field of coal chemical products, and discloses a liquid-phase seed crystal adding method and device for a mesitylene process, the device comprising a crystallizer, a pneumatic diaphragm pump and a seed crystal tank connected in sequence through pipelines.The method is as follows: at the end of crystallization of the crystallizer, liquid-phase seed crystals are extracted to the seed crystal tank, the temperature in the tank is maintained through a refrigerant water coil pipe, the seed crystal liquid is kept in a solid-suspension state through stirring, the seed crystal is added through a side-line pipeline by gravity flow, the amount of the seed crystal is accurately controlled by relying on a weighing metering module, and the pipeline is purged with nitrogen after the seed crystal is added.The present application realizes full-closed automation of seed crystal addition, eliminates the occupational health and environmental protection risks of manual addition of solid-phase seed crystals, and improves the stability and continuity of seed crystal addition.

The utility model relates to a kind of carrying cable formula double-drive bulk material conveying system and its gravity flow energy storage system, it is related to conveying equipment technical field.The carrying cable formula double-drive bulk material conveying system includes carrying structure, traction structure, conveying structure, driving device, first steering structure and second steering structure;The carrying structure includes carrying track and carrying cable, for carrying vehicle;First steering structure and second steering structure all include reel and steering wheel;Driving device can drive the traction cable of traction structure and the conveying belt of conveying structure rotate synchronously to first direction, and then drive the vehicle of conveying structure along carrying structure and conveying belt synchronous motion.The carrying cable formula double-drive bulk material conveying gravity flow energy storage system includes carrying cable formula double-drive bulk material conveying system.The utility model provides a kind of carrying cable formula double-drive bulk material conveying system and its gravity flow energy storage system, to solve the technical problem that the running resistance is too large in the conveying bulk material process in prior art, and the technical problem that carrying efficiency is lower.

A fish-vegetable co-culture system includes an aquaculture unit, a filtration unit, a planting unit, a purification unit, and a return unit connected in sequence to form a closed-loop water circulation system. In the closed-loop water circulation system, the water levels of the aquaculture unit, filtration unit, planting unit, and purification unit are arranged from high to low, and the water flow in the aquaculture unit, filtration unit, planting unit, and purification unit all relies on the water level difference to achieve natural gravity flow. The wastewater from the aquaculture pond flows naturally to the filtration unit and planting unit through gravity flow. The water-sealed siphon drainage system can maintain a stable water level in the planting trough without additional pumps. A water pump is only installed in the clean water return link. Compared with existing systems that rely on multiple pumps, energy consumption is reduced and operating costs are decreased.

This application discloses a mobile waste liquid collection system based on gravity flow and integrated circulating disinfection, belonging to the field of medical device technology. The system includes: a collection container module with a multi-functional interface cover, a fluid management module, an emptying module, and a control module. The cover is equipped with a waste liquid inlet, a negative pressure interface that can selectively connect to an external negative pressure source, and an inlet shut-off valve. The method includes: in clinical scenarios such as surgery, setting the system to non-negative pressure or negative pressure mode as needed to collect waste liquid; when the waste liquid reaches a preset threshold, automatically closing the inlet shut-off valve and triggering an alarm; subsequently, after moving the device to a designated disposal area, initiating a one-button program to complete the automatic emptying of the waste liquid and subsequent multi-stage spray cleaning and disinfection. This application effectively solves the core pain points of high equipment cost, process safety hazards, and low operational efficiency in the treatment of large-volume medical waste liquid.

This utility model relates to the field of coating material mixing technology, specifically a coating material mixing mechanism, including a mixing tank and a bottom cover. The mixing tank is fixedly installed inside a gantry frame on both sides via connecting blocks. The inner side of the bottom cover has threads that mate with the lower outer threads of the mixing tank. A sealing ring is provided at the inner bottom of the bottom cover, which is inserted into the mixing tank and tightly fitted to its inner wall. A discharge port is located at the center of the bottom cover, and a discharge pipe is provided at the bottom end of the bottom cover. A valve is fitted onto the outer side of the discharge pipe. By suspending the mixing tank inside the gantry frame and installing the bottom cover at the bottom end of the mixing tank, coating leakage can be prevented. When unloading and cleaning are required, the coating is first completely discharged through the discharge pipe, and then the bottom cover is separated from the mixing tank. The bottom cover can be disassembled for cleaning, and the combination of gravity flow and a scraper ring enhances the cleaning effect of the coating inside the mixing tank.

This application belongs to the field of industrial wastewater resource treatment technology, and relates to a non-powered dosing system and its dosing method. The non-powered dosing system includes an injection module, a storage module, and a regulating module. The injection module is connected to the storage module and is used to inject the reagent into the storage module. The storage module is connected to the wastewater treatment tank and is positioned higher than the wastewater treatment tank, allowing the reagent to flow into the wastewater treatment tank by gravity. The regulating module includes a first valve, a second valve, and a third valve, used to regulate the air pressure, reagent flow rate, and wastewater flow rate in the reagent storage tank, respectively. This system utilizes liquid level differences to achieve gravity flow of the reagent, effectively reducing energy consumption and minimizing the need for easily damaged components such as pumps and motors, significantly reducing equipment failure rates and maintenance costs.

This invention discloses a modular cascaded coupled multi-stage treatment system and method for mine wastewater, belonging to the field of environmental water treatment technology. It includes a filtration module filled with filter media for particle removal; an adsorption module filled with composite adsorption media for adsorbing heavy metal and organic pollutants; a reaction module filled with slow-release reaction media for removing heavy metal ions from wastewater through sulfide precipitation and reduction reactions; and a sedimentation module to slow down the reaction time and cause the water flow to reverse vertically. This invention achieves multi-stage synergistic removal of suspended solids, organic matter, and heavy metals from mine wastewater through a combination of sand, fly ash ceramsite, and heavy metal treatment agents; it relies on gravity flow due to the natural slope of the mine shaft for gravity-based operation; its modular design allows for flexible series connection to adapt to different pollution levels; and the semi-open tank facilitates media replacement, with heavy metals solidified in the reaction module, resulting in minimal secondary pollution.

The utility model discloses a nonferrous metallurgy sewage flocculation and precipitation system, including treatment pond, be equipped with the stirring zone and the precipitation zone of separate arrangement in treatment pond, be equipped with the movable frame in the stirring zone top, be equipped with a plurality of interval arrangement's feeding hopper on the movable frame, still be equipped with the stirring frame between the movable frame corresponding adjacent feeding hopper, the side wall bottom of the precipitation zone far from the stirring zone one end is equipped with the suction pump, the precipitation zone bottom is equipped with the scraper, the utility model discloses can be realized in the whole area even feeding of flocculating agent, avoid the problem of local concentration unevenness caused by traditional fixed feeding point, in the flocculating agent delivery process, utilize the stirring frame to form dynamic stirring path with the movement, make the mixing time of flocculating agent and sewage greatly shorten, after mixing can utilize gravity difference to realize the gravity flow conveying of sewage from the stirring zone to the precipitation zone, utilize the scraper at the precipitation zone bottom to scrape the sludge to the suction pump area, realize the quick suction treatment.

This invention provides a method and system for intelligent vertical design of gravity flow pipe networks, relating to the field of pipe network design technology. The method includes: acquiring a site digital twin model; optimizing the route layout based on the site digital twin model, the upstream pipe segment start point, the downstream pipe segment end point, and avoidance rules to generate an initial pipe network route; dividing the site digital twin model into multiple drainage zones by searching for building location points; performing pipe segment velocity analysis based on drainage data corresponding to each drainage zone and the planar connection angle of adjacent pipe segments at manholes in the initial pipe network route to obtain the actual minimum flow velocity for each pipe segment; and performing vertical correction design on the initial pipe network route based on the actual minimum flow velocity to obtain the overall gravity flow pipe network. The method and system provided by this invention can effectively improve the reliability of vertical design of gravity flow pipe networks.