129results about How to "Improve drainage capacity" patented technology

The invention discloses a soil ecological restoration method suitable for plant transplantation and a plant transplantation method, and relates to the technical field of soil ecological restoration, and the method comprises the following specific implementation steps: S1, soil evaluation; s2, pollutant treatment; s3, soil improvement; s4, covering and protecting soil; in the step S1, the structure, texture, pH value, nutrient content, pollutant level and the like of the soil are comprehensively analyzed; the method comprises the following steps: testing the pH value and saline-alkali content of polluted soil needing planting, digging away soil with high saline-alkali content, and backfilling soil with low saline-alkali content; or an isolation system is arranged, materials such as lime and slag are used for isolating saline-alkali soil from alien soil, films and the like are transversely used for isolating surrounding saline-alkali soil, and the cost is low. According to the soil ecological restoration method suitable for transplanting the plants and the plant transplanting method, the water content and permeability of the soil are improved through layer-by-layer improvement of the soil, the physical properties of the soil are improved, and growth of the plants is facilitated.

The utility model provides a double-layer roof eave gutter node structure. The double-layer roof eave gutter node structure comprises a reinforced concrete flat roof structure, the parapet wall is fixedly connected with the end part of the reinforced concrete flat roof structure; the fabricated light pitched roof structure is fixedly connected with the parapet wall; the parapet wall is provided with a plurality of flat roof drain pipes; the eave gutter is fixedly connected with the reinforced concrete flat roof structure; a rainwater pipe is arranged in the eave gutter and is used for organized drainage; a wall plate is arranged on one side of the eave gutter. The heat preservation performance and the waterproof performance of the building roofs in the cold and severe cold areas are effectively improved, and the drainage performance of the building roofs in the cold and severe cold areas is effectively improved through the method that the outer eave gutters extend from the pitched roofs and the flat roofs; installation is normative, construction is easy and convenient, materials are saved, economy and attractiveness are achieved, practicability is high, the construction method is compact and reasonable, construction is easy and convenient, the application range of the method is wide, the technical vacancy is made up, and the problems that no clear norms exist and secondary design is unreasonable are solved.

The utility model relates to the technical field of agricultural water conservancy accessory devices, in particular to an ecological drainage ditch structure which can effectively purify sewage, reduce environmental pollution and prevent water and soil loss from influencing the normal drainage effect, so that the working efficiency and the effect of farmland drainage are improved, and the practicability is enhanced. A drainage groove is formed in the top of the ditch body, the vegetation layer is arranged on the surface of the drainage groove of the ditch body, the filtering layer is arranged at the bottom of the vegetation layer, the diversion layer is arranged at the bottom of the filtering layer, and the bottom of the diversion layer is connected with the bottom of the drainage groove of the ditch body through the supporting assembly; the ecological structure can effectively purify sewage and reduce environmental pollution through the combined action of the vegetation layer, the filter layer and the flow guide layer, and reduces labor cost and improves the drainage effect on farmland while maintaining ecological balance and saving energy and reducing emission.

The invention belongs to the technical field of environmental protection and slope protection reinforcement of water conservancy projects of thermal power plants, and provides a slope protection and protection method for a downstream soft rock enrockment area of a stepped concrete faced rockfill dam, and the slope protection and protection method comprises a first horizontal drainage body arranged from a preset upstream and downstream enrockment area boundary to the surface of a downstream dam slope; the second horizontal drainage body is arranged from the preset upstream and downstream rockfill area boundary to the surface of the downstream dam slope, and the third horizontal drainage body is arranged from the preset upstream and downstream rockfill area boundary to the surface of the downstream dam slope; the boundary of the upstream and downstream rockfill areas is an inclined line from the slope top to the slope bottom; the first horizontal drainage body, the second horizontal drainage body and the third horizontal drainage body are arranged at the preset height positions correspondingly, and the seepage loads in different dam height ranges and the seepage characteristics of downstream soft rock damming materials are fully considered through the design of the three-layer horizontal drainage body structure; a multi-layer smooth drainage channel can be provided for upstream reservoir water leakage and dam face infiltration rainwater at the same time, and the overall stability of a downstream dam slope is effectively guaranteed.

The utility model discloses a radial tire for engineering machinery, which relates to the field of tire design and comprises a tire tread, a linear pattern wall and a U-shaped pattern wall are fixedly mounted on the periphery of the tire tread, a first reinforcing rib is fixedly mounted between the linear pattern wall and the U-shaped pattern wall, and a second reinforcing rib is fixedly mounted between the linear pattern wall and the U-shaped pattern wall. Side pattern walls are fixedly mounted on the periphery of the tire tread and located on the front side and the rear side of the linear pattern wall, shoulder pattern walls are fixedly mounted on the periphery of the tire tread and located on the front side and the rear side of the side pattern walls, and shoulder grooves are formed in the surfaces of the shoulder pattern walls. The height of the first reinforcing ribs is reasonably arranged, the connecting strength between the pattern walls is enhanced, the overall tear resistance is improved, the second reinforcing ribs are matched, the overall rigidity of the tire is remarkably enhanced, the performance of the tire is improved, and the service life of the tire is prolonged.

The utility model relates to the technical field of retaining walls, and discloses a garden landscape stone ecological retaining wall structure which comprises landscape stone bodies, an arch-shaped retaining wall is arranged between the two landscape stone bodies, a stabilizing assembly is arranged between the arch-shaped retaining wall and the landscape stone bodies, a planting groove is fixedly formed in the top face of the arch-shaped retaining wall, and a planting groove is formed in the top face of the planting groove. The stabilizing assembly comprises first anchoring ribs and second anchoring ribs, the first anchoring ribs are arranged on the two sides of the arched retaining wall, the second anchoring ribs are fixedly installed on one side of the landscape stone body, the first anchoring ribs and the second anchoring ribs are connected through anchoring binding, and connecting ribs are fixedly connected between the first anchoring ribs. According to the utility model, through the combination of the landscape stone body and the arched retaining wall, the soil retaining performance of the device is embodied, the ornamental performance of the device is also enhanced, and the stability of the arched retaining wall can be improved through the anchoring connection of the first anchoring rib and the second anchoring rib in the stabilizing assembly.

The utility model relates to the technical field of tires, and provides a super high performance car tire, comprising: a carcass; a plurality of longitudinal main drainage grooves are arranged on the tread of the carcass; the inner side of the tread of the carcass has an inner tread pattern area, and the outer side has an outer tread pattern area; a plurality of first auxiliary drainage grooves and a plurality of second auxiliary drainage grooves are alternately arranged on the inner tread pattern area; a knife groove is also arranged between adjacent first auxiliary drainage grooves and second auxiliary drainage grooves; a plurality of third auxiliary drainage grooves and a plurality of fourth auxiliary drainage grooves are alternately arranged on the outer tread pattern area. The utility model can improve the dry and wet grip and drainage performance, reduce the risk of hydroplaning, and improve the wet driving safety and driving comfort.

The present invention provides a method for erosion gully control, which relates to the technical field of erosion gully control, including using a drone to collect images of a to-be-controlled area, generating a three-dimensional scene image of the to-be-controlled area; determining various types of construction control areas based on the gully head, gully tail and gully; performing corresponding control construction on various types of construction control areas; setting a number of monitoring cycles, performing data collection in each monitoring cycle, and evaluating the erosion gully control effect based on the data collection results. The present invention solves the technical problem that the existing erosion gully control engineering measures require manual field investigation to obtain a two-dimensional image of the to-be-controlled area before engineering planning, which is time-consuming and labor-intensive, and the image finally obtained usually has a large error, which directly affects the final control effect. At the same time, after the construction of the control project is completed, there is a lack of monitoring of the control project, and timely feedback and timely adjustment of the control effect cannot be made. It is only static control, and the control effect cannot be scientifically evaluated.

The utility model relates to the field of windows, and discloses a novel sliding window profile capable of preventing rainwater from flowing backwards, which comprises an inner frame, an outer frame, a broken bridge and a sash frame, the inner frame is step-shaped, the step surface of the inner frame is inclined, the outer frame and the step surface are coplanar, a Y-shaped supporting strip is processed on the step surface, a track cover plate is arranged on the Y-shaped supporting strip, and the broken bridge is arranged on the track cover plate. A first brush strip is installed on the side wall of the top of the inner frame on one side of the track cover plate and abuts against the surface of the track cover plate, a second brush strip is installed at the bottom of the end, close to the outer frame, of the track cover plate, a supporting profile extending upwards is machined on the outer frame, and the second brush strip abuts against the surface of the supporting profile. A plurality of drainage holes are formed in the bottoms of the Y-shaped supporting strip and the supporting profile in the length direction, and a windproof strip is installed at the bottom of the side, close to the outdoor space, of the supporting profile. The Y-shaped supporting strips and the supporting section bars are arranged on the inner frame and the outer frame, a plurality of drainage holes can be machined, the drainage effect of the window is further improved, and meanwhile water backflow and wind whistling can be prevented through the windproof strips.

The utility model discloses an improved line-shaped gate hopper gate water distribution gate. The improved line-shaped gate hopper gate water distribution gate comprises a waterproof frame; the gate is arranged in the waterproof frame in a sliding manner; the water diversion plate is rotationally arranged in the gate, and grooves in a linear array are formed in the side wall of the water diversion plate. According to the improved water distribution gate with the linear gate hopper door, the water distribution plate is driven to rotate by 90 degrees, so that water flow can be discharged from the small water outlets of the gate body, the water discharge amount is controlled, meanwhile, the smaller the water outlets are, the larger the pressure of the water flow is, garbage accumulated at the gate body is flushed into the small water outlets on the partition walls, and the garbage is discharged by driving the circular blades to rotate. When the gate is opened, the cutting edge of the circular blade can extend out of the groove to cut fishing net plastic flowing through the groove, and the circular blade cuts garbage wound together into small blocks, so that the garbage is washed away by water flow, the garbage is prevented from blocking a water outlet of the gate, the water drainage effect is improved, and the garbage is prevented from being accumulated at the gate opening when the gate is opened.

The subgrade anti-settlement structure is characterized in that a lower drainage layer has water resistance and is stacked on a cushion layer, and a lower geotechnical grid is arranged on the lower drainage layer; and the upper drainage layer is arranged on the lower geotechnical grid. The structural strip is embedded in the middle of the first rubber strip in the thickness direction and arranged in the width direction of the first rubber strip. According to the roadbed anti-settlement structure provided by the utility model, the strength of the first adhesive tape in the width direction is enhanced through the structural strips, and the structural strength of each grid in the lower geotechnical grids can be enhanced. By means of the lower geotechnical grid with the reinforced structure, the whole strength of the upper drainage layer is guaranteed, meanwhile, the toughness of each grid in the lower geotechnical grid is improved, and the possibility that the upper drainage layer is abnormal in structure is lowered. Reinforcement is achieved through compounding of the upper geotechnical grid, and the structural strength of the pavement layer is improved. Meanwhile, the structural stability of the upper drainage layer is improved, and the sedimentation possibility is reduced.

The utility model discloses a small turning plough with a leveling function, and belongs to the technical field of small turning ploughs. Comprising a rack, a soil crushing assembly, a leveling assembly and a plowing assembly are arranged below the rack, the leveling assembly is located between the soil crushing assembly and the plowing assembly, the plowing assembly comprises a third mounting frame, a plowing shaft is arranged in the third mounting frame, and the two ends of the plowing shaft are connected with the third mounting frame through bearings; coulters are arranged on the outer wall of the plowing shaft and are uniformly distributed in the circumferential direction of the plowing shaft in a herringbone shape. According to the small turning plough with the leveling function, by arranging the turning assembly and the herringbone coulter, bidirectional soil turning and loosening and soil cutting and turning can be achieved, so that the soil structure is effectively broken, the soil hardening problem can be avoided, the air permeability and drainage performance of soil are improved, the rotation direction of the turning shaft interacts with the soil structure, and the leveling effect is improved. Therefore, the loosening effect of soil is enhanced, and the tillage depth and quality are improved.

The utility model discloses a water seal structure with an adjustable height. The water seal structure comprises a floor drain shell, the adjusting part is arranged in the floor drain shell, and the adjusting part comprises an adjusting sleeve arranged in the center position of the floor drain shell and an adjusting inner cylinder embedded in the adjusting sleeve; the lifting pipe is arranged in the floor drain shell, the top end of the lifting pipe is in threaded connection with the adjusting inner cylinder, and the bottom end of the lifting pipe is in sliding connection with the floor drain shell. By arranging the adjusting part, the lifting pipe connected with the adjusting inner cylinder can be controlled to move up and down in the floor drain shell by rotating the adjusting inner cylinder arranged in the adjusting sleeve, so that the height of the water seal structure of the floor drain can be adjusted; and the device can adjust the position of the lifting pipe according to different conditions, so that the sealing performance or the drainage performance of the device is improved.

This invention relates to the field of drainage flow data processing technology, specifically to an intelligent control method and system for drainage efficiency based on drainage flow monitoring data. The invention comprises a sampled data sequence and a predicted data sequence; it obtains multiple data segment groups from the sampled data sequence and the predicted data sequence based on the volatility of the data in the sampled data sequence; it obtains the prediction deviation of each data segment group based on the difference distribution characteristics and relative distance between the two data sequences in each data segment group; it obtains the relative prediction deviation difference at real time based on the difference between the prediction deviation of the data segment group at the real time and the prediction deviation of other data segment groups within the historical range; it obtains the weighted prediction data for the next time step; it further obtains the predicted gate opening degree; and it controls the drainage gate. This invention optimizes the gate opening degree and improves drainage efficiency by obtaining accurate drainage flow prediction data for the next time step.

The utility model belongs to the technical field of truck pre-weighing, in particular to oil tank truck pre-weighing equipment, which comprises a fixed seat and a weighing assembly arranged above the fixed seat. The weighing assembly comprises connecting plates, stand columns and stop levers, the connecting plates are rotationally connected to the inner sides of the two ends of the fixing base respectively, and the two stand columns are fixedly connected to the upper surface of the center of the fixing base; the connecting plate drives the stop lever to rise, the truck can pass through, the driving speed of the truck is further limited, the safety of the truck is further guaranteed, meanwhile, the stop lever can be controlled to rise and fall through the connecting plate, the second rope and the weight bearing block, electric power is not needed, the device is more environmentally friendly, and later maintenance is more convenient.

The utility model relates to a tubeless all-steel truck radial tire tread pattern structure which comprises a tire tread, and further comprises longitudinal straight groove patterns which are respectively and uniformly distributed from a central line to two sides in the circumferential direction of the tire tread and comprise a first longitudinal straight groove pattern and a second longitudinal straight groove pattern; the transverse inclined grooves are connected between the adjacent longitudinal straight groove patterns and comprise first transverse inclined straight grooves connected with the adjacent first longitudinal straight groove patterns, second transverse inclined straight grooves connected with the adjacent first longitudinal straight groove patterns and second longitudinal straight groove patterns, and Z-shaped transverse inclined grooves; the inclination direction of the first transverse inclined straight groove is opposite to that of the second transverse inclined straight groove, and the inclination direction of the second transverse inclined straight groove is consistent with that of the Z-shaped transverse inclined groove. Compared with the prior art, the utility model can effectively solve the problems of blockage of broken stones or foreign matters and low drainage efficiency, and has good guidance quality, drainage performance, road holding force, sideslip resistance and multi-road-condition adaptability under the condition of high-speed driving.

The utility model discloses an adjustable positioning device for a longitudinal drainage pipe of a high-speed rail tunnel, and relates to the technical field of tunnel waterproof and drainage construction. The device comprises a base, fixing columns are fixedly connected to the four corners of the top of the base, a fixing plate is fixedly connected to the tops of the fixing columns, an adjusting assembly is arranged above the base and comprises a motor, a supporting frame is fixedly connected to the bottom of the motor, and the bottom of the supporting frame is fixedly connected with the top of the fixing plate. The bottom output end of the motor is fixedly connected with a rotating shaft, and the bottom of the rotating shaft is fixedly connected with a first gear. By arranging the adjusting assembly, specifically, a rotating handle is pulled to drive clamping blocks to move downwards so that one end of the drainage pipe can penetrate through a first fixing block, the rotating handle is loosened so that the drainage pipe can be fixed through the two clamping blocks, a motor is started to drive a threaded rod to rotate, and a movable block can move up and down on the outer surface of the threaded rod; workers can accurately adjust the height of the drainage pipe according to actual conditions, and the drainage effect of the drainage pipe is improved.

The utility model relates to the technical field of foundation pit drainage, and disclose a kind of foundation pit side wall drainage structure, including drain pipe, the reinforcing mechanism is fixedly installed in drain pipe side face, the filter replacement mechanism is arranged in drain pipe inside;The filter replacement mechanism includes installation sleeve, the limit ring is fixedly installed in installation sleeve side face.When the drainage structure is blocked and needs to be cleaned, first open the buckle, further open the cover plate, then hold the handle tightly, and pull up, drive the mounting plate and the installation sleeve to rise, the limit ring and the positioning ring are separated from the positioning groove at this time, and drive the filter plate installed on the inner wall of the installation sleeve to rise, remove the magazines accumulated between the installation sleeve and the filter plate, after cleaning is completed, hold the handle tightly and align the limit ring and the positioning ring with the limit slot, and make the three mesh, then installation can be completed, at this time, close the cover plate, can effectively improve the efficiency of cleaning the impurities inside the drain pipe.

The invention discloses a tunnel composite lining drainage system, and relates to the technical field of tunnel engineering, a waterproof and drainage layer is arranged between a primary support and a secondary lining, a first side ditch and a second side ditch are respectively arranged on two sides of the bottom of a tunnel, the second side ditch is communicated with a central drainage ditch through a transverse drainage pipe, and the inner layer of the waterproof and drainage layer is a woodworking cloth layer. Drainage plates are evenly laid below the woodworking cloth layer, waterproof plates are connected between the drainage plates in a lap joint mode, annular blind pipes are arranged in the middles of the drainage plates, longitudinal blind pipes are embedded into the bottoms of the drainage plates and the bottoms of the annular blind pipes, and the longitudinal blind pipes are communicated with the first side ditch; the secondary lining construction joint is provided with a middle-buried type water stop belt, and the positions, on the two sides of the middle-buried type water stop belt, of the construction joint are filled with water stop sealing materials. And the construction joints are filled with high-elasticity water stop sealing materials, the sealing performance is high, the failure probability of the water stop belt can be reduced, and the waterproof and drainage effects are improved.

The present invention relates to the field of new energy technology, and specifically to a fuel cell system, a control method, a fuel cell unit, a fuel cell stack and a vehicle. The system comprises a fuel cell stack and a gas-liquid separation device, the fuel cell stack comprises a hydrogen outlet manifold, and the gas-liquid separation device is connected to the hydrogen outlet manifold; an auxiliary channel and a tail channel are also provided on the fuel cell stack, and the hydrogen outlet manifold is connected to the auxiliary channel through the tail channel; the system also comprises an auxiliary pump, and the gas-liquid separation device is connected to the auxiliary channel through the auxiliary pump; the present invention uses the auxiliary pump to send the gas separated by the gas-liquid separation device into the auxiliary channel through the auxiliary channel, and then re-flows into the hydrogen outlet manifold through the tail channel; thereby, the airflow velocity in the anode outlet manifold of the fuel cell stack can be increased, thereby enhancing the drainage capacity of the anode outlet manifold of the fuel cell stack; by controlling the rotation speed of the auxiliary pump, the flow rate of the system and the liquid water content in the mixed airflow at the outlet of the fuel cell stack can be adjusted.

This utility model relates to the field of roof waterproofing technology, providing a roof waterproofing and insulation structure, including a roof and an insulation layer. Eaves gutters are provided along the edges of the roof. The insulation layer covers the roof, and a first drainage channel and a second drainage channel are provided on one side of the insulation layer facing the roof. The extension directions of the first and second drainage channels intersect, and both are connected to the eaves gutters. By providing the first and second drainage channels at the bottom of the insulation layer, accumulated water within the insulation layer can be drained from the first and second drainage channels to the eaves gutters for centralized drainage. This eliminates the need for drainage pipes on the roof, ensuring a continuous waterproof layer and preventing damage to the roof waterproofing. The intersecting extension directions of the first and second drainage channels enable multi-angle drainage, improving drainage efficiency and effectively preventing water accumulation in the insulation layer from reducing its thermal insulation efficiency.

The utility model discloses a side slope photovoltaic foundation device for the sunny side of a road. The side slope photovoltaic foundation device comprises a prefabricated foundation anti-skid bottom plate, a road anti-collision pier arranged on one side edge of the prefabricated foundation anti-skid bottom plate and a plurality of photovoltaic foundation prefabricated piers which are arranged on the prefabricated foundation anti-skid bottom plate and form a square matrix. The prefabricated foundation anti-skid bottom plate, the highway anti-collision pier and the photovoltaic foundation prefabricated pier are of a prefabricated integrally-formed structure and are used for being constructed and installed in the same period with a side slope of a highway. The top end of each photovoltaic foundation prefabricated pier is provided with an assembly pressing block, and the assembly pressing blocks are connected to the photovoltaic foundation prefabricated piers through assembly pressing block embedded parts. The assembly pressing block is used for fixing the photovoltaic panel assembly. Drain holes are reserved in the road anti-collision pier and the photovoltaic foundation prefabricated pier respectively. A cable channel reserved hole is reserved in the upper portion of the photovoltaic foundation prefabricated pier. According to the slope photovoltaic foundation device for the sunny side of the highway, a prefabricated integrally-formed structure is adopted, the structure is stable and durable, meanwhile, a roadbed can be prevented from being damaged, and the sideslip risk of slope operation can also be avoided.

The present invention discloses a heat exchanger and an air conditioning system having same. The heat exchanger comprises a first heat exchanger core and a second heat exchanger core, the first heat exchanger core comprising first heat exchange tubes and first fins, and the second heat exchanger core comprising second heat exchange tubes and second fins. The angle between the first heat exchanger core and the second heat exchanger core is α, the length of the first heat exchange tube is TL, the refrigerant circulation area of the first heat exchange tube is S, the width of the first fin is FW, the density of the first fin is FP, the height of the first fin is FH, the width of the first heat exchanger core is ML, the length of the second heat exchange tube is tl, the refrigerant circulation area of the second heat exchange tube is s, the width of the second fin is fw, the density of the second fin is fp, the height of the second fin is fh, the width of the second heat exchanger core is ml, and 0.016 ≤ (TL × ML × FW × FP × FH × s × cos α) / (tl × ml × fw × fp × fh × S) < 64. In this way, the water drainage performance of the heat exchanger is improved, and the problem of water being blown from the heat exchanger is solved.

The invention belongs to the technical field of coal bed gas exploitation, relates to a self-energizing activated drainage gas recovery process, and introduces a self-energizing technology and a fracturing exploitation technology. In other words, before the self-energizing activator is injected, the fracturing technology is adopted to exploit the coal seam, high-pressure liquid or gas is injected into the coal seam, the coal seam is fractured, cracks are opened, and new cracks and channels are created. The self-energizing activator can increase the permeability of the coal bed, improve the pore connectivity, increase the release rate and collection efficiency of the coal bed gas, increase the quantity of the collected coal bed gas and reduce the waste of coal bed gas resources.

The invention discloses a deep and large foundation pit drainage system which comprises a drainage well, a seepage water storage part, a sludge cutting part, a mud-water separation part, a mud collecting part and a mud-water discharge part, a partition plate and a cutting plate are arranged in the seepage water storage part and the sludge cutting part respectively, the diameter of the cutting plate is smaller than that of the drainage well, and the mud-water separation part is arranged in the mud-water separation part. The top of the cutting plate is provided with cutting blades at intervals in the radial direction, the cutting plate and the bottom of the partition plate are each provided with a pair of matched extrusion protrusions so that slurry can pass through a gap between the pair of extrusion protrusions, and the extrusion protrusions on the cutting plate and the cutting blades on the cutting plate are arranged at intervals in the radial direction of the cutting plate. The invention further provides a drainage method based on the deep and large foundation pit drainage system. The mud-water separation efficiency of seepage water of the deep and large foundation pit can be effectively improved, and efficient and stable operation of a drainage system of the deep and large foundation pit is ensured.

The invention relates to the technical field of tunnel drainage, in particular to a long-distance reverse slope drainage non-stop extension pipeline structure which comprises a drainage pipe and a main gate valve. The main gate valve is connected to the water outlet end to control the opening or closing state of the water passing surface of the main drain pipe, at least two branch drain pipes are connected to the main drain pipe in the circumferential direction, and the total area of the water passing sections of the branch drain pipes is not smaller than the area of the water passing section of the main drain pipe. The drainage device is applied to tunnel drainage non-stop operation, during tunnel drainage, through cooperative operation of the drainage main pipe and the drainage branch pipes, continuity and large flow of tunnel drainage are guaranteed, and compared with a traditional drainage device, the drainage device can achieve non-stop drainage and same-flow drainage, that is, in the process of prolonging the drainage pipeline, the drainage efficiency is greatly improved. Drainage construction operation does not need to be stopped, and the drainage flow cannot be reduced.

The utility model discloses a center flow guide type adjustable same-layer accumulated water drainage pipe fitting, and relates to the technical field of same-layer accumulated water drainage pipe fittings, in particular to the technical field of same-layer accumulated water drainage pipe fittings, which comprises a water accumulation piece lower body and a center flow guide pipe fitting, and a fixing sleeve is mounted at the upper end of the water accumulation piece lower body. After the water accumulation piece lower body is pounded in a floor slab in advance, the central flow guide pipe fitting is installed on the water accumulation piece lower body through the fixing sleeve when a vertical pipe drainage system is installed, and the central flow guide pipe fitting and the water accumulation piece lower body are combined into a complete drainage pipe fitting or can be combined with the central flow guide pipe fitting in advance according to the construction height and position. The water accumulation piece lower body is installed and used as a complete water drainage pipe, the spiral ribs arranged in the water accumulation piece lower body can effectively dredge water flow and improve the water drainage capacity, and the center flow guide pipe is a center flow guide type transverse branch pipe and is fixed in the water accumulation piece lower body through the fixing sleeve. Slight transverse displacement of the pipeline and construction height adjustment of a transverse branch pipe orifice of the pipe fitting can be realized.

This utility model discloses a drain assembly and sink structure, relating to the field of sink technology. The drain assembly includes a shell and an inner tank. The shell has a drain outlet for connecting to a drain pipe assembly. The inner tank is at least partially disposed within the shell. It also includes a filter element with an installation port corresponding to the drain outlet. The filter element is detachably connected to the inner tank and / or the shell, and is configured to at least partially cover the installation port. This drain assembly and sink structure allows for easier cleaning of the drain outlet due to the detachable filter element within the inner tank.

The utility model discloses a kind of sponge city efficient permeation greenbelt planting structures, it includes: green grass layer, artificial backfill nutrient soil layer, non-woven geotextile, water-accumulating layer and original soil layer, water-accumulating layer, non-woven geotextile, artificial backfill nutrient soil layer and green grass layer are sequentially laid from bottom to top in the upper of original soil layer, first drainage pipeline is provided in original soil layer, a plurality of rootlet pipes are provided on first drainage pipeline, a plurality of rootlet pipes are arranged along the direction of first drainage pipeline, one end of rootlet pipe extends into water-accumulating layer, a plurality of first through holes are provided on rootlet pipe, overflow pipe is provided on first drainage pipeline, overflow pipe extends to green grass layer upwards, overflow hole is provided on first drainage pipeline, overflow hole bottom is connected with second drainage pipeline, second drainage pipeline is connected with water-collecting well, and sealing assembly is provided at overflow hole. The utility model can solve the problem of poor permeability of urban green space compared with prior art.

The application relates to the field of shoes, and provides an antibacterial indoor shoe, which comprises a shoe sole, a pad layer, a plurality of water passing cavities are arranged in the shoe sole, and a plurality of water passing holes are arranged in the pad layer. The application has the effect of accelerating the drying speed of the indoor shoe.