231results about How to "Guaranteed drainage effect" patented technology

The invention discloses a side slope shallow drainage system. The bottom platform of the side slope (6) is provided with drainage ditches (4), and multiple rows and rows of drainage boreholes are densely arranged on the side slope (6). (1), the distance between the drainage boreholes (1) is 2-3m, the depth is 3-4m, and the elevation angle is 0-10°, each of the drainage boreholes (1) is provided with Drainage pipe, the slope of the slope (6) is arranged with a longitudinal micro-drainage ditch (2) and / or a transverse micro-drainage ditch (3) docked with the outlet of each of the drainage pipes, the The longitudinal miniature water collection ditch (2) and / or the horizontal miniature water collection ditches (3) communicate with the drainage ditch (4). The invention is a side slope shallow layer drainage system for quickly and efficiently discharging the groundwater infiltrated by rainfall into the shallow layer soil of the side slope.

The invention discloses a eliminating outcrop water method of tailing dam and it includes the following steps: drilling hole: drilling hole as required depth, angle and direction in the tailing dam to forming the pore path leading to the top of the dam from the lower; pulling the tubes: pulling the specially-produced drainage pipes into the pore path drilled in the tailing dam; decortication: taking off the outer layer of protective layer of drainage pipes. The specially-produced drainage pipes of the method comprise of the body pipe, the gauze and the protective layer which are prepared out the body pipe one by one, said body pipe is equipped with percolating water groove along the axial center direction of pipe body uniformly and the bottom of percolating water groove is equipped with percolating water holes which reach the inner of pipe body discontinuously. The invention is facilitating to construction, the effect of drainage is fine and it is good for eliminating the hidden danger of the tailings dam is in danger, cave-in collapse and breaking.

The invention relates to a cleaning device, in particular to a respirator cleaning device for cardiology department. The technical problem to be solved by the invention is to provide the respirator cleaning device for the cardiology department. In order to solve the technical problem, the invention provides the respirator cleaning device for the cardiology department. The device comprises a fixed plate, a water outlet pipe and the like; a top plate is arranged at the top of the front side wall of the fixed plate; a water tank is arranged on the right side of the lower part of the front side wall of the fixed plate; a separation plate is arranged at the middle part in the water tank; a driving mechanism is arranged on the front side wall of the fixed plate above the water tank; and a first hard pipe is connected between the bottom of the driving mechanism and the top of the water tank. The device can guarantee fluidity of water in a cleaning tank, guarantees cleaning of a respirator, achieves the water feeding and drainage effects, improves the respirator cleaning efficiency, uses quantitative cleaning agent in each time of cleaning of the respirator to prevent waste of the cleaning agent, is convenient to disassemble and replace a brush, and can improve the drying efficiency of the respirator.

The invention provides a semiconductor refrigeration refrigerator. The semiconductor refrigeration refrigerator comprises a liner, a wind way cover plate and a semiconductor refrigeration device, wherein a storage cabinet is limited in the liner; a mounting opening is formed in the middle of the back wall of the liner; the wind way cover plate is arranged at the inner side of the back wall of the liner; a wind way is formed between the wind way cover plate and the back wall of the liner; a wind return port is formed in the wind way cover plate opposite to the mounting opening; wind outlets are respectively formed in the upper part and the lower part of the wind way cover plate; one part of the semiconductor refrigeration device penetrates through the mounting opening to extend into the wind way; and a cooling fan arranged on the semiconductor refrigeration device is arranged behind the wind return port for sucking an airflow in the storage cabinet into the wind way. The wind way is formed between the wind way cover plate and the back wall of the liner of the semiconductor refrigeration refrigerator, and upper and lower two air circulations are formed in the storage cabinet by using the cooling fan, so that the internal temperature of the storage cabinet is balanced, and the heat exchange efficiency is high.

The invention discloses a manhole cover belonging to the field of manhole covers. The manhole cover comprises a cover body and drain holes, and further comprises a protective cover, a rain sensor, a microprocessor, a motor and a power supply, wherein two sides of the cover body are provided with two tracks extending in parallel; the protective cover is provided with idler wheels for movement in the tracks; the protective cover is capable of shielding the cover body through the movement of the idler wheels; the rain sensor is connected with the motor through the microprocessor; and the motor is used for driving the idler wheels to move. The manhole cover can be automatically shielded in non-rainy days to prevent sundries from blocking the drain holes, and the drainage function of the manhole cover can be normally started in rainy days.

The present invention discloses a semi-permeable drainage pipe and a related drainage pipe network, and relates to a drainage pipe and a related drainage pipe network. A semi-permeable drainage pipe (10) is composed of an upper semi-pipe for permeability (11) and a lower semi-pipe for non-permeability (12). A structure of the drainage network based on the semi-permeable drainage pipe is described as follows: a drill hole (40) is arranged at a drainage zone (30), the semi-permeable drainage pipe (10) is arranged on the internal wall of the drill hole (40), and a water stop material (20) is arranged between the lower positions of the semi-permeable drainage pipe (10) and the drill hole (40). The present invention only drains water from the drainage zone (30) in a single direction, but does not transfer at other places except for the draining zone (30); reduces the location of the saturated surface of underground water; is applied to the civil engineering, the water conversancy, the transportation, the bridge, the mine, the municipal engineering, the agriculture, the horticulture and other drainage and precipitation fields.

The invention discloses an all-in-one machine for cleaning plane glass and curved glass, and belongs to the field of cleaning equipment. The all-in-one machine comprises a rack which is provided with a feed section, a cleaning section, a drying section and a discharge section which are all provided with vertical brackets fixed to the rack, and the vertical brackets are provided with a plurality of backing wheels; the feed section, the cleaning section, the drying section and the discharge section which are all provided with synchronous belt guide slots horizontally arranged on the rack and matched with synchronous belts, and the synchronous belts are provided with a plurality of glass support blocks alternately; the cleaning section is provided with a back brush and a front brush; the cleaning section is provided with a high pressure spray pipe and a high pressure nozzle; and the rack is provided with synchronous belt driving mechanisms used for driving the synchronous belts, and brush rotation power mechanisms used for driving the back brush and the front brush to rotate. The all-in-one machine disclosed by the invention can be used for cleaning the plane glass and curved glass as well as ultra-thick glass.

The invention discloses a clinical multifunctional drainage device for the oral surgery department. The clinical multifunctional drainage device comprises a bottom plate, wherein a left support is arranged at the left side of the upper surface of the bottom plate; a right support is arranged at the right side of the upper surface of the bottom plate; a liquid collecting barrel and a negative pressure barrel located at the right side of the liquid collecting barrel are arranged on the upper surface of the bottom plate located between the left support and the right support; a connecting pipe isarranged between the bottom parts of one sides, close to each other, of the liquid collecting barrel and the negative pressure barrel; and a piston rod is movably arranged in the negative pressure barrel. The clinical multifunctional drainage device for the oral surgery department provided by the invention can conveniently and quickly realize the purpose of drainage, avoids the trouble of manual drainage, saves time and labor, improves the working efficiency, and guarantees the drainage effect; meanwhile, after the clinical multifunctional drainage device is used, a drainage tube can be woundin a winding box, so the problem that the drainage tube is wound and knotted due to the fact that the drainage tube is placed in a pile in a scattered mode after being used is solved, and normal use of the drainage tube for the next time is guaranteed.

The invention relates to a combined drainage system in a saline oil region and a method for processing the combined drainage and strongly tamping foundation. The method comprises the following steps: firstly, the combined drainage system for dredging and discharging groundwater is arranged in the foundation soil of a treatment region; the combined drainage system comprises a drainage passage combined by plastic drainage strips and dinas drainage piles; each plastic drainage strip and each dinas drainage pile are covered and a construction and operation surface layer is paved on the surface of the treatment region; the strongly tamping is carried out on the construction and operation surface layer by a tamping hammer; a tamping pit is formed in each dynamic tamping position; after groundwater in the foundation is collected in the tamping pits, pumped and discharged to the outside of a construction field; and the tamping pits are backfilled and leveled, thereby completing the first point tamping. The combined drainage system and the method solve the problem of discharging groundwater, substantially improve the bearing capacity of the foundation and the modulus, meet the requirements of constructing various buildings in the saline oil region, can save the expenses of foundation treatment by over 40 percent and shorten the construction period of the foundation treatment by more than one half.

The invention relates to the technical field of municipal drainage waterlogging prevention engineering, in particular to a municipal drainage system. A sewer outlet cover plate is arranged on the top of a water collecting well. The bottom of the water collecting well is communicated with one end of a subsider, and the other end of the subsider is communicated with a sewer; the bottom surface of the subsider and the bottom surface of the water collecting well are located on the same horizontal plane; a static water partition plate is fixedly arranged on the inner bottom wall of the water collecting well and arranged under a water guiding plate; the inner side wall of the water collecting well is provided with two guiding grooves matched with a floating plate; the guiding grooves extend from the bottom of the water collecting well to the water guiding plate in the vertical direction; the guiding grooves are symmetrically formed in an inner cavity of the water collecting well; the two ends of the floating plate are inserted into the two guiding grooves respectively; the floating plate is arranged between the subsider and the static water partition plate. When the municipal drainage system is in use, the structure prevents more sundries from entering the sewer, the sewer is kept smooth, and the drainage capacity of the sewer is ensured to the great extent.

The invention discloses a plum tree planting method, and belongs to the technical field of fruit tree planting. The method comprises the following steps: garden construction; seed selection: a mainly cultivated variety accounts for 80 percent, and pollination trees account for 10 to 20 percent; planting: a, transplanting annual grafted nursery-grown plants; water, fertilizer and soil management: applying a fertilizer in March, May, August and October, irrigating the nursery-grown plants after fertilization, and covering plum trees with grass after the irrigation; trimming; pollination management: after early-spring irrigation, spraying a white pigment preparation on tree trunks and boughs before sprouting, spraying a mixed solution of 0.1 percent borax and 0.1 percent ammonium molybdate once on leaf surfaces 15 to 20 days before a full-bloom stage, and manually spraying sugar water of which the concentration is 5 to 10 percent at the full-bloom stage; pest management: preventing and controlling pests by a grapholitafunebrana sex pheromone and a pesticide, and trapping and killing the pests by a black light lamp and sweet lure. Through combination of grafted plant transplanting, water and fertilizer management, pollination management and pest management, the survival rate and fruit set percentage of the plum trees are increased effectively, the survival rate of nursery-grown plants is 98 percent, the fruit setting percentage is 50 percent, and the unit yield per mu is 500 to 800 kg.

The invention provides a well yield metering device comprising a separator, a liquid quantity metering instrument and a gas quantity metering instrument. The side wall near the top of the separator is provided with a liquid coming opening connected with a liquid coming pipe and the bottom of the separator is provided with a liquid discharge port connected with a liquid discharge pipe. The top of the separator is provided with a gas discharge port connected with a gas discharge pipe. The liquid discharge pipe and the gas discharge pipe are jointly connected to a main outlet pipe backward. The liquid quantity metering instrument is arranged on the liquid discharge pipe and the gas quantity metering instrument is arranged on the gas discharge pipe. The separator comprises a separator cavity and a separator umbrella arranged in the middle of the separator cavity for separation. The separator also comprises a secondary separator plate also disposed in the middle of the separator cavity for separation. The secondary separator plate and the separator umbrella are integrally combined to form a cone structure. By using other information means on site, the well yield metering device can greatly improve system efficiency, facilitate the promotion and application of oil field information construction and improve the overall information level of oil field. The well yield metering device has the advantages of reliable performance, low cost, high metering accuracy, convenient installation and maintenance and easy extension and compatibility of systems.

The invention belongs to the technical field of engineering geological landslide disaster prevention and control, and discloses a deep drainage prevention and control method and system suitable for ahydrodynamic pressure type reservoir landslide. A deep water collecting and draining well is arranged on a landslide body; when the difference between the water level of the water collecting well of the landslide body and the reservoir water level reaches a preset threshold value, a water pumping system is started to drain underground water, the difference between the water head inside the landslide and the water head outside the landslide is reduced, and therefore the purpose of improving the stability of the landslide is achieved; and the distributed water collecting well group is matched with drainage in a staged mode, so that the hydrodynamic pressure generated by the reduction of the reservoir water level in the landslide can be eliminated, and the purpose of landslide prevention andcontrol is achieved. The related structural device specifically comprises a water collecting system, a water level monitoring system, a water pumping and draining automatic control system, a water pumping system and a slope surface guide drainage system. The method has the characteristics of being targeted, convenient to construct, low in manufacturing cost and good in durability, and meanwhile, the problems that the landslide treatment difficulty of a large reservoir bank is large, the cost is high and the effect is poor can be solved.

The invention relates to the technical field of fireproof doors and windows, and discloses a manufacturing process of a high-efficiency and energy-saving aluminum alloy fireproof window. The manufacturing process comprises the following steps that S1, profiles are processed, specifically, all parts of structures are cut, and then slotting and drilling operations are carried out; S2, inner parts are assembled, specifically, steel linings, sliding seats and cross columns are assembled, and then the assembled steel linings, sliding seats and cross columns are put into frames of a window sash and a window frame to assemble the window sash and the window frame; S3, punching is carried out, specifically, corners of the window sash and corners of the window frame are punched; S4, painting is carried out, specifically, antirust paint is sprayed; S5, glass is installed, specifically, double-layer glass is installed into the frame of the window sash and is sealed; and S6, accessories are installed, specifically, hardware accessories of the fireproof window are installed into slots and holes formed in the step S1. According to the manufacturing process of the high-efficiency and energy-saving aluminum alloy fireproof window, the cross columns, the sliding seats and the steel linings are installed in the window frame and the window sash, the steel linings and the cross columns are both made of steel, and the strength and the high-temperature resistance of the steel linings and the cross columns are superior to that of aluminum alloys, when the fireproof window encounters a fire, the strength and the fire resistance of the window frame and the window sash are enhanced by the steel linings and the cross columns, so that the stability of the fireproof window when encountering the fire is improved.

The invention relates to the technical field of sponge city construction, in particular to a sponge city water circulation system, and aims to overcome the defects that in the process of collecting and recycling city rainfall in the prior art, when the rainfall is large, a drainage system difficultly drains water normally, and city waterlogging is likely to be caused. Wherein the road surface layer is arranged on an urban surface road, the permeable pipeline is used for collecting rainwater permeated into the road surface layer, the rainwater overflow well is used for slowing down the rainwater discharge rate, and the drainage pipeline is used for collecting rainwater and conveying and discharging the rainwater; two symmetrically-arranged water passing holes are formed in the inner side wall of the rainwater overflow well; by means of the sponge city drainage system, the drainage capacity of the sponge city is enhanced, the possibility of urban inland inundation is reduced, and then the stability of the sponge city is improved.

The invention discloses an LED split type module lamp which comprises a light management module, a light source module, a heat-radiating module and a housing, wherein the housing is provided with a cavity structure with an opened side, the heat-radiating module is arranged in a cavity of the cavity structure, a penetrating structure communicated with outside is arranged on the wall of the cavity,the light source module is fixed with the heat-radiating module, an emergent light side points at the opened side of the cavity, one end of the light management module is connected with the housing through a hinge mechanism and enables the light management module to rotate around the hinge mechanism for covering the opened side so as to cover and buckle the light source module, and the other end of the light management module is fixed with the housing through a wrench buckle. The power drive module, the light source module, the heat-radiating module and the light management module are subjected to split module design, thus the LED split type module lamp is easy to disassemble and replace, and is easy to realize expansion application of a large-power LED split type module lamp.

The invention discloses a pre-embedded tunnel annular water drainage pipe arrangement method. The method is characterized in that an annular drainage pipe is embedded in a primary supporting layer inadvance, the exposed surface of the bottom of the annular drainage pipe flushes with the surface of the primary supporting layer, the defect of squeezing deformation of the annular drainage pipe can be overcome, and a flushing inner pipe is used for clearing silt or crystal substances which precipitate in the drainage pipe regularly, so that smooth drainage of a tunnel is ensured, and tunnel waterleakage harm is eliminated.

The invention relates to a drainage device for a municipal plaza. The drainage device comprises a drainage port and a cover plate matched with the drainage port; pushing rods are in shaft connection with the periphery of the cover plate, and all the pushing rods extend outwards in the axis of the cover plate; driving strips are in shaft connection with the outer ends of the pushing rods, and the two ends of the pushing rods can rotate around axes in vertical planes; the driving strips are slidingly arranged in positioning sliding barrels which are fixedly embedded into the ground and made of transparent materials; flow guiding holes communicated with the earth surface are formed in the positioning sliding barrels; the driving strips are made from water-absorption expanding materials and expand in the axis direction of the positioning sliding barrels after absorbing water. The drainage device is novel in structure and unique in principle, the drainage port can be intelligently opened and closed, rainwater dredging is guaranteed, debris blocking can be effectively prevented, peculiar smells are reduced, and meanwhile the effect of beautifying roads and the plaza is realized.

The invention discloses a rainwater recycling system for sponge city overpass and a construction method of the rainwater recycling system. The rainwater recycling system comprises a rainwater collection device, rainwater pretreatment equipment and a water storage well, the rainwater collection device comprises a rainwater pipe and a collector, a water collection pump is mounted on the collector, and the rear end of the rainwater pipe is connected onto the water collection pump while the front end of the same is connected onto a deck of the overpass; the lower end of the collector is connected with a first guide pipe, the other end of the first guide pipe is connected with the rainwater pretreatment equipment, a diverter is mounted at the lower end of the rainwater pretreatment equipment, a second guide pipe is connected on the diverter and connected to the water storage well, a submerged pump is mounted in the water storage well, and a recycling pipe is connected on the submerged pump. An existing overpass draining pipeline is introduced into the collector, and rainwater is purified with the help of the rainwater pretreatment equipment, guided into the water storage well and then recycled through the recycling pipe, so that reasonable utilization of rainwater resources is realized, city water consumption pressure is relieved, the draining problem of the overpass is solved effectively, and city traffic is guaranteed.

The invention relates to the technical field of medical equipment, in particular to a pipeline support capable of carrying therapeutic drug particles, which can be arranged through a minimally invasive method, is mainly used for supporting a bile duct and a pancreiatic duct stenosis caused by disease, and has a local treatment function. The pipeline support consists of a drainage tube and a drug carrying tube. The drug carrying tube is arranged in the cavity of the drainage tube, and the drug carrying tube is closely attached to one side inner wall of the drainage tube. When the pipeline support is in use, the drug particles can be placed into and fixed in the drug carrying tube according to a treatment scheme. A filling material can be selectively adopted according to the treatment requirement to seal the cavity part between two or more adjacent drug particles on two ends and inside the drug carrying tube. The pipeline support is simple in structure and can be minimally-invasively placed into a human body through an endoscope, is convenient to use and have the local treatment function and a drainage function.

The invention relates to a combined drainage system in a saline oil region and a method for treating the strongly tamping foundation. The method comprises the following steps: firstly, plastic drainage strips are constructed in a treatment region, then a dinas drainage undercourse is paved on the position of the surface of the treatment region coated with each drainage strip; the plastic drainage strips and the dinas drainage undercourses are combined to form a passage for dredging and discharging groundwater; points are distributed on the dinas drainage undercourses and strongly tamped by a tamping hammer; a tamping pit is formed in each strongly tamping position; after the groundwater in the foundation flows into each plastic drainage strip, flows to the dinas drainage undercourse by the plastic drainage strips and are collected in the tamping pits by the dinas drainage undercourses; the groundwater collected in the tamping pits is pumped and discharged to the outside of a construction field; and finally, the tamping pits are backfilled and leveled. The combined system and the method can substantially improve the bearing capacity of the foundation and the modulus, meet the requirements of constructing various buildings in the saline oil region, save the expenses of foundation treatment and shorten the construction period of the foundation treatment.

The invention provides a bipolar plate and a fuel cell. The bipolar plate comprises a cathode plate (1) and an anode plate (2), the cathode plate (1) comprises an air inlet (3), an air outlet (4) andan air flow channel (5), the first end of the air flow channel (5) is communicated with the air inlet (3), the second end of the air flow channel (5) is communicated with the air outlet (4), and the air outlet (4) completely covers the air flow channel (5). According to the bipolar plate, timely discharge of liquid water on the cathode side can be ensured, and the working stability of the bipolarplate under high current density is greatly improved.

The invention provides a dish washing machine and a water pump structure thereof. The water pump structure comprises a pump shaft achieving the effect of transmitting power, a drainage impeller whichis arranged at the lower end of the pump shaft and supplies drainage power, and a drainage cavity communicated with a drainage water inlet pipe and a drainage water outlet pipe, the drainage impelleris located inside the drainage cavity, and a flow stop structure is radially fixed into the drainage cavity for guiding the flow direction of water flow pushed by the drainage impeller. Due to the radially fixed flow stop structure, when the water flow pushed by the drainage impeller flows, the flow stop structure stops water flow in the radial direction, the water flow is drained into the drainage water inlet pipe or the drainage water outlet pipe; due to forward rotation or reverse rotation of the drainage impeller, water flow inside the drainage cavity is pushed to rotate forwards or reversely, in other words, water flow impacts on the first drainage face or the second drainage face of the flow stop structure; due to the fact that the flow stop structure is fixedly arranged, the stop flow structure stability is facilitated, the drainage effect is ensured, and the problem that drainage loses efficacy is avoided.

The invention discloses an underdrain-type tunnel after-lining drainage repairing system and a construction method thereof, and belongs to the technical field of tunnel water proofing and drainage. The underdrain-type tunnel after-lining drainage repairing system comprises a half-section pipe annularly arranged at a water leakage seam in a secondary lining; the opening side of the half-section pipe is fixedly attached to a primary support through a clamping hoop with an expansion bolt; a notch is dug in the side, deviating from the opening side of the half-section pipe, of the secondary lining; the notch is filled with high-strength polymer waterproofing mortar; a flexible water permeable pipe or an earthwork blind ditch is formed in the half-section pipe in a penetrating mode; the two ends of the half-section pipe are led to an edge ditch or a center ditch; and the position between the flexible water permeable pipe and the half-section pipe or between the earthwork blind ditch and thehalf-section pipe is filled with water permeable fillers. Aiming at the situations of cracking, water seepage and the like in the operation process of a tunnel, water after lining is effectively drained, the influence of water seepage on operation of the tunnel is avoided, and the service life of the tunnel is prolonged.

The invention discloses a calender for a PVC film processing process. The calender comprises a frame, a calendering device arranged on the frame and a scraping device arranged at the front part of theframe. The calendering device comprises a first pressing roller, a second pressing roller arranged on one side of the first pressing roller, a third pressing roller arranged below the second pressingroller, a fourth pressing roller arranged below the third pressing roller, first connecting blocks arranged on the left side and the right side of the first pressing roller and the second pressing roller, second connecting blocks arranged on the left side and the right side of the third pressing roller, third connecting blocks arranged on the left side and the right side of the fourth pressing roller, transmission devices arranged on the connecting blocks, a discharging device arranged on the first pressing roller, and the scraping device arranged at the front part of the fourth pressing roller. According to the calender, intermittent blanking is carried out through a blanking trough, so that the blanking is more uniform, two sides of a PVC film are the same in thickness, the PVC film isrolled and flattened through a flattening device, the consistent thickness can be realized by the scraping device, meanwhile, scraped materials can be recycled, and thus resources are saved.

The invention provides an oblique turn plate odor-resistance floor drain comprising a cylinder body; a radial rotary shaft is arranged in the cylinder body; tow ends of the rotary shaft are respectively connected with the inner wall of the cylinder body; the rotary shaft is rotatably provided with an oblique turn plate matched with an oblique cross section of the cylinder body; the lower side of the center of the oblique turn plate is connected with the rotary shaft. The beneficial effects are that the floor drain uses the oblique turn plate, and the oblique turn plate can open a large water flow channel in a short time, water flow cross section is big, and water discharge is fast; the oblique turn plate can be closed in a short time so as to keep certain water seal, thus providing good odor-resistance effect.

The invention relates to the field of medical apparatus and instruments, and discloses a medical intelligent drainage device. The drainage device consists of a weighing assembly, a drainage adjustingassembly, a controller and a power supply assembly; the weighing assembly is used for feeding back weighing signals capable of reflecting the change of an effusion in a drainage bag to the controller;the drainage adjusting assembly consists of a gantry, a connecting tube and an adjusting mechanism; the connecting tube is used for connecting the drainage bag and a drainage tube; the adjusting mechanism is driven by a driving device to extrude the connecting tube to different extents so as to achieve the purpose of adjusting the flow rate of the effusion in the connecting tube; and the controller can control the adjusting mechanism based on the weighing signals obtained during drainage and preset drainage parameters, so that automatic drainage can be realized. Through intelligent design, the drainage device can realize the automatic control of timed drainage, quantitative drainage and constant speed drainage by cooperative using with existing conventional drainage assemblies; and therefore, the safety and stability of drainage operation can be enhanced, manpower can be saved, drainage effects can be guaranteed, and the drainage device is convenient and efficient in using.

A construction method for precision perforation drainage holes in coal mine underground roadways comprises a precision opposed perforation directional drilling tool assembly, a pull back-type reaming bit, a wall protective steel casing and the like. The method utilizes a measurement while drilling system, a deflecting drilling tool and a precise drilling track control technology to work accurately to perforate drilling holes to connect a water outlet roadway and a drainage roadway, after the drilling holes are perforated, the pull back-type reaming bit is replaced to expand in the reverse direction without lifting a drill, multistage reaming is conducted repeatedly, a variable diameter is changed in a perforation roadway, the wall protective casing with a large aperture is connected, the wall protective casing is cased off in the whole process in a pull-back mode, grouting solidification is conducted, and a drainage shock tube is mounted for filtering debris in water of the water outlet roadway. Therefore, the construction method of the precision perforation drainage holes in the coal mine underground roadways can effectively ensure that the drilling holes in the drainage roadway are perforated precisely and the large-diameter casing are cased off in the whole process, so that special drainage roadway excavation construction are replaced effectively, and cost of coal mine water treatment is greatly reduced.

The invention discloses a dual-layer flowerpot for conserving water and soil, comprising an upper flowerpot body and a lower flowerpot body; a granular protrudent wave surface is arranged at the center of the bottom surface of the upper flowerpot body; a plurality of draining holes are distributed on the wave surface; therefore the structure design of the dual-layer flowerpot solves the problems that soil and fertilizer are lost with the water during the using of the traditional flowerpot and ensures the ventilation property of soil. A plurality of connection supports are uniformly arranged between the upper flowerpot body and the lower flowerpot body for supporting and stabilizing the upper flowerpot body, and the bottom of the lower flowerpot body is not provided with a small hole, therefore, the problem of the water and soil overflowing is avoided and no tray is needed any more. If the flowerpot is used for cultivating flowers, the waste of chemical fertilizer is greatly reduced, the cultivation cost is saved, the cultivation environment is improved; furthermore, the flowerpot is convenient for removing and suspending.

The invention relates to an integrated W-shaped farmland ecological liquid waste ditch, belongs to the fields of agricultural cleaner production and water environment restoration, and aims to solve the problems that the amount of pollutants in current farmland liquid waste is large, and severe pollution is caused when such pollutants enter natural body. The farmland ecological liquid waste ditch comprises a quick drainage channel, a purifying channel, a semi-concrete embankment, an infiltration dam and an ecological revetment, wherein the infiltration dam is arranged at the middle of the ditch bottom of the farmland ecological liquid waste ditch; the quick drainage channel is formed between the semi-concrete embankment and the infiltration dam; the sinking purifying channel is formed between the ecological revetment and the infiltration dam; the infiltration dam is positioned in the purifying channel; aquatic plants are grown at the channel bottom of the purifying channel; the infiltration dam is formed by fixing a steel wire mesh on stumps; and aquatic plants are grown at the dam top of the infiltration dam. The drainage capacity of the multi-functional farmland ecological liquid waste ditch provided by the invention can be guaranteed; and meanwhile, the farmland liquid waste can be purified, surplus water resources can be retained, and pollution-reducing and amount-reducing discharge of the farmland liquid waste can be realized.