161results about How to "Timely drainage" patented technology

The invention provides a method for planting Chinese yam. The method comprises the following steps of (1) land selection, seed selection and disinfection, (2) soil preparation and furrowing, (3) sowing, (4) bud picking, base fertilizer applying and top application, (5) water management, (6) pest control and (7) harvesting. The method for planting the Chinese yam solves the practical problems, hindering large area development of the Chinese yam, that diseases are easy to infect during close planting, top application difficulty is large, furcation occurs in tuberization, has the advantages of being wide in applicability, straight and even in tuberization of planted Chinese yam, high in per unit yield and good in quality, and can achieve high-yield, high-quality and high-efficiency cultivation.

The invention discloses a method for improving survival rate of salt-tolerant oilseed rape in saline-alkali soil. The method is characterized in that a seeding bed is properly raised according to the underwater level and saline alkaline degree of the saline-alkali soil; salt is discharged through an open trench along with water; the variety of salt-tolerant oilseed rape is selected; then bio-organic fertilizer is applied. The method is a method for cultivating crops in the saline-alkali soil, and is simple to operate, low in cost, and easy to be popularized; the seeding bed is raised to drain water timely, so that the salt discharging efficiency can be increased, and an ecological environment suitable for plant living is created.. With the adoption of the method, the survival rate of the salt-tolerant oilseed rape in severe saline-alkali soil (containing 0.5 to 0.8% of salt content) is effectively improved and is more than 95%.

The invention discloses a facility of conducting intelligent drainage along with changes of the water level. The facility comprises a machine shell. A transmission cavity is formed in the left end ofthe interior of the machine shell, a lifting cavity is formed in the right side of the transmission cavity, and a channel which communicates with a sewer is formed in the lower end of the interior ofthe machine shell. A transmission mechanism which provides the power for the device is arranged in the transmission cavity, a lifting mechanism which has a lifting effect is arranged in the lifting cavity, and an auxiliary drainage mechanism which quickens drainage is arranged at the lower end of the interior of the lifting cavity. A floating cavity with a leftward opening is further formed in theleft end of the interior of the machine shell, and a water level sensing mechanism which senses the water level is arranged in the floating cavity. When the facility works, the height of the water level can be automatically sensed, and the facility can conduct timely drainage in two stages along with the increase of the height of the water level. When the height of the water level is slightly increased, but the increase is a few, the facility can conduct drainage in the mode that a valve is opened. When the height of the water level is increased to a large height, the facility can conduct timely drainage in the mode that the auxiliary drainage device is opened.

The invention discloses a method for soilless seedling raising method for chilli by an organic waste combined medium mainly. The method is characterized by comprising the following steps of: building a cultivation groove with the length of 6-7 meters and the width of 0.50-1m by using bricks in a greenhouse, paving a layer of plastic film with the thickness of 0.10mm at the bottom of the cultivation groove, and pressing the outer edges of the film below the bricks; selecting slag, cow dung, corn stalks and biogas residues as media, crushing the air-dried corn stalks by using a feeder grinder, sieving by using a sieve with the sieve diameter of 3-5mm, and mixing with 2 percent of urea; crushing the slag and the biogas residues, mixing with 1 percent of urea, uniformly mixing the media, sieving by using a sieve with the sieve diameter of 2-3mm, filling in the arranged cultivation groove, compacting, and introducing clear water until the water is 70 to 80 percent of the maximum water-holding capacity of the media; and selecting germinated seeds, sowing in the depth of 1cm, covering the media with the thickness of 0.50cm, and lightly spraying water once by using a watering pot.

The invention relates to the technical field of cleaning equipment, in particular to a rain and snow cleaning device for shoe soles. The rain and snow cleaning device comprises a shell. A cleaning chamber and a drying chamber are parallelly arranged in the shell, a first shoe groove is formed in the top of the cleaning chamber, a support pipe network is arranged between the cleaning chamber and the first shoe groove, and the inside of the cleaning chamber is sequentially provided with a shoe sole washing rotary brush, a water collecting groove and a water tank from top to bottom; a second shoe groove is formed in the top of the drying chamber, a support net rack is further arranged between the second shoe groove and the drying chamber, and a water absorption assembly and a drying assembly are arranged in the drying chamber. The rain and snow cleaning device for the shoe soles has the advantages that the rain and snow cleaning device is simple in structure and free of dust and is small, accumulated snow and dust on the various shoe soles and shoe sides can be efficiently cleaned by the rain and snow cleaning device in a high-quality manner, the cleanness of indoor grounds can be kept, and pathogen transmission can be prevented; water absorption materials can be timely drained by drain devices, purification treatment can be carried out on water and cleaning agents which are already used for washing, the water and the cleaning agents can be recycled, accordingly, the manufacturing and clean-keeping costs can be reduced, labor force can be liberated, the purposes of saving energy and protecting environments can be achieved, and the like.

The invention relates to a live broadcast room cover updating method and device, electronic equipment and a storage medium. The method comprises the following steps: acquiring current state information of a live broadcasting room; when the current state information reaches a preset condition, acquiring a wonderful fragment corresponding to the live broadcast room; and updating the live broadcast cover of the live broadcast room according to the wonderful fragments. According to the technical scheme disclosed by the invention, the effect of timely drainage can be realized based on the current state information of the live broadcasting room; and the live broadcast room cover can be dynamically updated and can also be prevented from being frequently updated.

The invention relates to a medical appliance for treating wound surfaces, in particular to an atomization administration and intermittent vacuum sealing drainage (VSD) device for wound surfaces, which comprises a coating material, a drainage tube and a negative pressure source, wherein one end of the drainage tube, which is provided with a side hole, is inserted into the coating material, and the other end of the drainage tube is connected with the negative pressure source. The device provided by the invention is characterized by also comprising an ultrasonic atomizer and an atomized gas introducing tube, wherein one end of the atomized gas introducing tube is connected with the ultrasonic atomizer, and the other end of the atomized gas introducing tube, which is provided with a side hole, is inserted into the coating material. The VSD technology is used by the device for forming a relatively sealed space on a wound surface, and ultrasonic atomized gas is injected between every two times of VSD, so that the wound surface is in a wet, low-oxygen and weakly acidic environment, thereby being favorable for repairing the tissues of the wound surface.

The invention relates to the technical field of engineering machinery, and discloses a drainage device, a draining method and an oil water separator for oil and water separation. The drainage device comprises a liquid level height measurement device and a controller, wherein the controller comprises an acquisition unit, a processing unit and an execution unit; the acquisition unit is used for acquiring the liquid level height of an oil water separator according to measurement information of the liquid level height measurement device; the processing unit is used for determining whether to drain water or stop draining water according to the liquid level height; and the execution unit is used for indicating a water drain valve to open when the processing unit determines to drain water, and indicating the water drain valve to close when the processing unit determines to stop draining water. The drainage device provided by the embodiment of the invention can instantly read the information of the liquid level height to facilitate timely drainage, and has the functions of detecting drainage quantity and oil water proportion and warning failures and service life, so that the quality and efficiency of the whole oil water separation process are greatly improved.

The invention relates to a multifunctional culture water drainage strobe. A barrel-drain is arranged at a position outside a culture pond filled with the culture water and lower than the bottom of a drainage port of the culture pond; the drainage strobe comprises an outer sleeve arranged in the culture pond; the lower part of the outer sleeve is provided with a water through hole groove; the bottom of the culture pond inside the outer sleeve is provided with a drainage port; one end of a drainage concealed conduit arranged below the bottom of the culture pond is communicated with the culture pond through the drainage port; an inner insertion tube arranged in the outer sleeve can be inserted into or pulled out of the end of the drainage concealed conduit; a swing type water level control tube arranged in the barrel-drain can be inserted into or pulled out of the other end of the drainage concealed conduit; the water level control tube inserted into the drainage concealed conduit can swing around a connecting point between the water level control tube and the drainage concealed conduit; the top ends of the outer sleeve, the inner insertion tube and the water level control tube are all opening ends; and the top end of the inner insertion tube is lower than that of the outer sleeve. The strobe has the characteristics of automatic control of water level, good sealing performance, effective drainage of culture water at the bottom layer, timely drainage of redundant water in disaster weathers, simple and convenient construction and the like.

The invention discloses a breeding method for improving yield and seed production purity of hot pickled mustard tubers. According to the method, big-plant reserved seeds, medium-plant reserved seeds and small-plant reserved seeds of the hot pickled mustard tubers are respectively seeded in different periods; planting of plants, fertilization, seed selection, pruning and harvesting are performed on big, medium and small hot pickled mustard tuber plants by adopting different treatment means; and the seeds of the hot pickled mustard tubers are produced by adopting a repeated reproduction technical route of reproducing big-plant reserved seeds with the big-plant reserved seeds, reproducing medium-plant reserved seeds with the medium-plant reserved seeds and reproducing production seeds with the small-plant reserved seeds. The method has the advantages of greatly improving the yield and the purity of the hot pickled mustard tuber seeds and reducing the cost and the risk of seed production.

The invention discloses an intelligent control system for a multifunctional rainwater regulation and storage pond. The system comprises a field layer, a monitoring layer and an internet layer; the field layer comprises a regulation and storage pond water inlet valve, a regulation and storage pond liquid level meter, a water quality detector, a water pump, a water outlet tank liquid level meter, aclean water pump, a shut-off valve, a drain pump and a three-way valve; the monitoring layer comprises a PLC, a switchboard and an engineer station, the PLC controls the regulation and storage pond water inlet valve, the regulation and storage pond liquid level meter, the water quality detector, the water pump, the water outlet tank water level meter, the clean water pump, the shut-off valve, thedrain pump and the three-way valve to work, and the PLC is connected with the engineer station through the switchboard; the internet layer comprises a server, and the server is connected with the switchboard. The invention further provides an intelligent control method for the multifunctional rainwater regulation and storage pond. In the intelligent control system and method, appropriate functionsare automatically selected according to current weather conditions, the multi-functionalization of the regulation and storage pond is realized, and the functions of regulation and storage, surface source pollution control and rainwater reuse are integrated in the regulation and storage pond.

The invention relates to a large storage amount water storing and draining plate suitable for roof greening. The large storage amount water storing and draining plate comprises a plastic plate face, honeycomb water storing bottles, communicating grooves, draining holes, supporting columns, non-woven geotextiles and water absorbing belts. The plate face, the water storing bottles, the communicating grooves and the supporting columns are all made of high density polyethylene (HDPE) plastic base plates after stamping. The water storing bottles are arranged on the plate face in a honeycomb mode and connected through the communicating grooves. The water storing space is large, and meanwhile uniform water distributing is achieved. The draining holes are formed in the plate face. The supporting columns are arranged below the plate face. One layer of the non-woven geotextiles is adhered on the plate face and the bottom of the each bottle correspondingly. The water absorbing belts are arranged in the position, of the communicating grooves, of the geotextiles of the plate face and stretch in the bottoms of the bottles in the position of the water storing bottles. The structure is reasonable, forming is convenient, construction is convenient, maintenance is simple, the mechanical property is good, universality is high, system adaptability is strong, and meanwhile the multiple functions of water storing, water draining, filtering, ventilating, heat insulation, noise reduction, root thorns resisting and the like are achieved; and stored rainwater can be utilized to replenish water for a matrix.

The invention discloses a rotation control device for a flip cover type drainer. A connecting rod (4) is fixedly connected on the side wall of the drainer (2); and the rotation control device further comprises a control mechanism which comprises a switch (9), a power supply (5), a controller (8) and a stepping motor (7) connected sequentially, wherein gears (6) are fixed on extension ends of a rotating shaft and the connecting rod (4) of the stepping motor (7), and the two gears (6) are mutually meshed; and the power supply (5) is controlled by the switch (9) to supply power, the controller (8) is used for controlling the rotating shaft of the stepping motor (7) to rotate, and the gear (6) drives the gear (6) on the extension end of the connecting rod (4) to turn over the drainer (2), thereby driving the drainer (2) to form a drainage channel with a drainage hole or be closed completely. The rotation control device disclosed by the invention can automatically control turnover of the drainer, and the drainer does not need to be manually pressed, so that the rotation control device can perform drainage timely, conveniently and rapidly.

The invention provides a mechanical ditching and soil covering device used in rice stubble paddy fields. The device is characterized by mainly comprising a towing bracket, a ditching plow, a balance tail wheel and directional soil covering plates, wherein the main body of the towing bracket is a horizontal cross bracket which is formed by connection of a longitudinal beam and a cross beam; a towing connector is arranged at the front end of the longitudinal beam and can be connected with various tractors to play a role of towing; the ditching plow is connected below the middle part of the longitudinal beam and plays roles of ditching and left and right bidirectional soil distributing; the balance tail wheel is connected below the rear end of the longitudinal beam, can be elastically adjusted up and down and plays roles of adjusting ditch depth, planishing ditch bottom and balancing integral stress; and the directional soil covering plates are respectively connected below the two ends of the cross beam and play a role of directionally stacking furrow slices at controlled intervals. The device is especially suitable for plow-type ditching in the rice stubble paddy fields before rape transplanting.

The invention relates to a mountain road filling and excavation junction roadbed structure and construction method thereof. The roadbed structure includes a filling section, an excavation section anda transition section of junction of the filling and excavation sections. A transition step and an open drain are arranged at the filling section. A filling and excavation junction drainage system is arranged at the transition section of junction of the filling and excavation sections. The drainage system at the junction of the filling and excavation sections comprises a assembled transverse drainage blind ditch with a replaceable drainage body, a longitudinal through drainage blind ditch and a water permeation layer and water insulation layer combined transition section at the junction of thefilling and excavation sections. A combined drainage small conduit is arranged in the drainage system and the transition section step respectively. The bottom of the combined type drainage small conduit on the drainage system at the junction of the filling and excavation sections is connected with the longitudinal through drainage blind ditch. The longitudinal through drainage blind ditch is communicated with assembled transverse drainage blind ditch with the replaceable drainage body. According to the invention, the underground water level in the slope surface can be monitored in time throughthe arranged observation holes, the inner inclination angle and the size of the step of the transition section of the stone road section can be effectively controlled, the construction speed is accelerated, and the overall stability of the roadbed is improved.

A method improving tree plantation survival rate in a severe saline-alkali soil and belongs to the field of saline-alkali greening. The method is characterized by comprising the following steps of (1) properly lifting a ground to an earth mound according to underground water level and saline-alkali degree, (2) selecting high saline-alkali-resistant plant types, (3) ridging for 20 to 40cm along the inclination of the earth mound with a gradient between 15 to 45 degrees and building afforestation fish-scale pits on the ridges according to size of saline-resistant seedlings, (4) applying 4.0 to 8.0kg decomposed cow manure to each fish-scale pit, (5) employing a planting method of burying soil for three-times, stepping for twice and lifting the seedling for once, (6) ridging soil on the periphery of the fish-scale pits to form round sills, and (7) discharging salt along water through an open trench. By the use of the method, garden greening plantation survival rate in the severe saline-alkali (with salt content of 0.5% to 1.5%) can be effectively improved and survival rate can reach more than 70%.

The invention discloses an antique building reinforced waterproof roof and a construction method thereof. The reinforced waterproof roof comprises a roof area and a cornice head area. The roof area comprises a wooden rafter, a sheathing brick layer, a wooden keel, a treated wood base layer, a first waterproof roll layer, a second waterproof roll layer, a convex plastic drainage board layer, a non-woven fabric layer, a steel mesh layer, a cement mortar mortar bed and a tile-roofing layer sequentially from inside to outside. The cornice head area comprises a wooden rafter, a hood-rafter-to-rafter wood strip, a sheathing brick layer, a wooden fly rafter, an eave wood strip, a second sheathing brick layer, a roof boarding layer, a treated wood base layer, a wooden verge board, a stainless steel draining board, a first waterproof roll layer, a second waterproof roll layer, a stainless steel angle baffle, a convex plastic drainage board layer, a non-woven fabric layer, a cornice treated wood head and the like sequentially from inside to outside. Breakthrough and innovation are made on the basis of the conventional roof waterproofing process of antique buildings, timely drainage of water seepage is realized with the aid of a drainage and moisture permeable overhead channel set up, and safety coefficient of roof waterproofing of the antique buildings is improved substantively.

The invention relates to the field of matched cultivation methods preventing stagnant water in upper soil for planting citrus in a rice field, and discloses a wide-bed deep-ditch earthing-up ridging method. The plow pan of the rice field is broken during ridging, the characteristic that the plow pan is hard and retains water is overcome, and the purpose of preventing stagnant water in upper soil for planting citrus in the rice field is achieved; ditches (2) are backfilled with a backfill surface oil layer, a modified soil material layer and a backfill soil layer from bottom to top, and the purpose of making soil fertile is achieved; a surface soil stripping technology is utilized to apply stripped surface soil to land reclamation, loss or waste of the earth surface mellow soil source is effectively prevented, and soil fertility is maintained; drainage channels (1) are dug to form a smooth drainage network, and stagnant water is rapidly drained; field planting points (7) are determinedaccording to the plant and row spacing of 2 meters*5 meters. The method has the advantages of simple soil preparation structure arrangement, convenient implementation and good early fruiting and highyield effect.

The embodiment of the invention provides a method, device and system for water level monitoring and a method, device and system for drainage control. The method for the drainage control comprises the steps that real water level information obtained by a single-chip microcomputer is acquired; the real water level information is the water level information which is sent by a water level sensor and received by the single-chip microcomputer; all the received water level information is sequenced according to a size order of water level values when the water level information of a preset quantity is received; a middle value is worked out and taken as the real water level information; whether the water level values in the real water level information are larger than a preset threshold value is determined; and a water suction pump is controlled to drain away water when the water level value exceeds the preset threshold value.

The invention discloses a garbage incineration power generation-used garbage pool preventing unpleasant odor emission and belongs to the field of garbage disposal. The garbage incineration power generation-used garbage pool preventing unpleasant odor emission comprises a base. A first supporting plate is installed at the upper end of the base through bolts. A circular groove is formed in the right end of the first supporting plate. A cylinder is rotatably connected to the circular groove in a sleeving manner. The garbage pool is fixedly connected to the right end of the cylinder. A pool cover is connected to the upper end of the garbage pool through threads. According to the garbage incineration power generation-used garbage pool preventing unpleasant odor emission, sealed treatment is conducted on garbage through a box type structure; garbage is prevented from emitting unpleasant odors; besides, transparent connecting pipes and a water-collecting tank are adopted to collect water, water amount collected is convenient to observe, timely drainage is benefited, and the situation that garbage at the bottom is soaked because too much water is accumulated is avoided; through the cylinder and a connecting shaft, the garbage pool is installed between the first supporting plate and a second supporting plate; and in addition, the connecting shaft is driven through an electromotor, the garbage pool is convenient to overturn, pouring of garbage is benefited, and garbage is convenient to discharge.

The invention discloses an ascending descending and water drainage integrated device of an automatic garage floodgate. The ascending descending and water drainage integrated device of the automatic garage floodgate comprises a floating ball positioned inside a flood prevention wall body. The floating ball is used for fast driving a power arm to lift up under the buoyancy effect when flood rushes into the inside of the flood prevention wall body through a reticular manhole lid; through the effect of a support rod, the resistance of a sensing rod is decreased; through an electric wire, a signalis transmitted to an asynchronous motor so that the asynchronous motor is driven to work; through the movement of a transmission shaft, a support plate of a jack is raised, so that the whole of the flood prevention wall body is raised for flood prevention; a wall body water inlet is formed in the flood prevention wall body; after the flood prevention wall body is raised, flood enters the flood prevention wall body through the wall body water inlet; the floating ball floats up or descends according to the water inlet quantity so as to automatically control the ascending and descending of the flood prevention wall body; and additionally, a water pumping pump and a water discharging pipeline are also arranged inside the flood prevention wall body and are used for achieving a flood draining effect through being connected with a sewer. The ascending descending and water drainage integrated device of the automatic garage floodgate has the advantages that the fast ascending and descending ofthe flood prevention wall body can be realized according to the water quantity, and the flood can be timely prevented from rushing into a garage to avoid the loss; meanwhile, installation is convenient; and trouble and labor are saved.

The invention relates to a high-temperature disinfection dish washing machine. The dish washing machine comprises a dish washing cavity, a cover plate, a rotary dish rack, a spraying arm assembly, a water path system, a steam generation device and a high-pressure hot air assembly. The rotary dish rack and the spraying arm assembly are mounted in the dish washing cavity; the rotary dish rack is used for fixedly placing dishes and tableware; the water path system is used for supplying water to the spraying arm assembly and collecting sewage after dish washing; the spraying arm assembly sprays clean water to clean tableware and drives the rotary dish rack to rotate at the same time; steam generated by the steam generation device is conveyed into the dish washing cavity; steam can kill virusesand bacteria to ensure tableware to be clean; meanwhile, the steam also heats the liquid cleaning water to clean tableware; the high-pressure hot air assembly generates high-pressure hot air to dry tableware, the high-pressure hot air drives the dish rack to rotate at the same time, the purpose of enhancing the dish washing and cleaning effect is achieved, the water path system is reasonable in structural design, clear water and sewage are not mixed, secondary pollution is avoided, no sewage is left, a pump and a cavity are kept ventilated, and bacteria are prevented from infecting tableware.

The invention relates to the application field of the proton exchange membrane fuel cell technology and particularly relates to a three-dimensional flow field with high-efficiency drainage of a protonexchange membrane fuel cell. The three-dimensional flow field forms a sealing structure between a membrane electrode and a separator, wherein a passage end surface is in the shape of one or more teeth, and fluid holes are formed on two sides of each tooth. The three-dimensional flow field of the invention realizes the purpose of effective water management without using external equipment such asa hydrogen circulation pump, therefore, the pulse discharge amount is greatly reduced, and the gas utilization rate can be effectively improved compared with a conventional two-dimensional flow field.The invention is applicable to a cathode-anode flow field of the proton exchange membrane fuel cell, is especially suitable for an anode side flow field, and has very important meanings for simplifying a battery system and improving the gas utilization rate.

The invention relates to an intelligent well lid with graded drainage. The intelligent well lid comprises a well lid body, a well lid base, a connecting rod lifting mechanism and an information module, wherein the connecting rod lifting mechanism is connected with the bottom end of the well lid body and the well lid base, the information module is arranged at the bottom of the well lid body, and the connecting rod lifting mechanism is controlled by the information module to drive the well lid body and the well lid base to be sealed or opened. The intelligent well lid is an intelligent Internetof Things device, automatic and intelligent drainage can be achieved according to the received information and the monitored environment information, timely and rapid drainage can be achieved withoutmanual operation, the problems of urban inland inundation, flood and the like can be effectively solved, the workload of maintenance personnel is reduced, manpower resources and maintenance cost aresaved, and the intelligent well lid is safer and more reliable.

The invention provides an outdoor anti-seepage adjustable intelligent power distribution cabinet, and relates to the technical field of power distribution. The cabinet comprises a base, a drainage mechanism is arranged in the base, the upper end of the base is fixedly connected with a protective sleeve, and the inner wall of the protective sleeve is movably connected with an electric cabinet bodythrough a reinforcing mechanism. A waterproof insulating layer is arranged on the outer side of the lower end of the electric cabinet body, electrical components are arranged in the electric cabinet body, and a heat dissipation cavity is formed in the upper end of the electric cabinet body in a separated mode through a partition plate. A central control panel controls a storage battery to supply power to an electric heating wire, so that a cover body is heated, the cover body is helped to melt accumulated snow at the upper end, after the accumulated snow is melted, the solar photovoltaic panelcan collect photo-thermal energy and convert the photo-thermal energy into electric energy to charge the storage battery, and electric power resources are saved; and in addition, the electric cabinetbody is prevented from being damaged due to compression caused by excessive accumulated snow in winter, and the electric cabinet body is further protected.

The invention provides a coastal saline-alkali soil ecological improvement system. The system comprises an ecological regulation pond, a culture pond, a platform field, an alkali discharge ditch and a shallow groundwater extraction system, the ecological regulation pond and the alkali discharge ditch are connected with the alkali discharge ditch and a river through ditches, the ecological regulation pond performs rainy season fresh water accumulation and individual rainy year water draining, and the culture pond performs underground water or fresh water supplementing and aquaculture. The platform field is paved with different kinds of straw according to different distances with the pond, the shallow groundwater extraction system provides power by means of blending of wind energy and solar energy to extract shallow groundwater continuously day and night. The invention further provides a matched high-yield cotton planting method. Accordingly, adversity stress of saline-alkali, drought and water logging of coastal saline-alkali soil is significantly changed, and normal growth and development of cotton are promoted; meanwhile, the pest and disease damage is significantly lowered, management is conducted more conveniently, the cotton yield is significantly increased, the cotton quality is significantly improved, and the cotton planting earnings of farmers are directly increased.

The invention discloses a mining multistage intelligent drainage apparatus and method. The apparatus comprises a working face water speed control and drainage unit. The working face water speed control and drainage unit comprises a water speed data acquiring module, a water speed data processing unit, a control unit and a water speed warning unit; the water speed data acquiring unit, the control unit and the water speed warning unit are all connected with the water speed data processing unit. The working face water speed control and drainage unit is capable of monitoring water incoming speed of a water bin throughout the day, quantity basis is provided for pump starting of a regular drainage unit, problems of overflow, overload and switch ageing, caused by frequent start-stop of a centrifugal pump, are decreased, the service life of the centrifugal pump is prolonged, necessary time is provided workers to evacuate from a site, especially in water inrush emergency, and life safety of staff is further ensured.

The invention belongs to a recycling system for water resources of a metro station foundation pit closely adjacent to a high slope. The recycling system comprises a foundation pit water pumping and draining system, a sedimentation water collecting tank system, a high slope collection and storage system and a water resource utilization system. The water resource utilization system is used for introducing filtered water in a fire-fighting water pool to provide water resources for a concrete structure curing water-consuming system of a metro station, a construction site fire-fighting pipeline system, a field area road sprinkler system, a foundation pit anchor-plate retaining water-consuming system, a dust fog falling gunlock water-consuming system and a temporary living quarter water-consuming system. The water resources of the metro station foundation pit closely adjacent to the high slope are effectively recycled, and the recycling system has the advantages that the method is simple and practical, the water consumption quantity is decreased, the construction cost is reduced, the water drainage and filtration effects are good, the pollution control cost is low, sewage is recovered and recycled on the spot, and the energy-saving and environment-friendly effects are good.

The invention provides an oxygen generation control system of a PSA oxygen generator. The PSA oxygen generator comprises an air compressor, a freezing dryer and an oxygen generator; an oxygen generation control system of the PSA oxygen generator at least comprises an air tank drainage system, an oxygen concentration adjusting control and alarm system, a freezing dryer control system, a PLC controlprogram and a network control system; the air tank drainage system at least comprises a pressure sensor mounted at the bottom of an air storage tank, a drainage air control valve mounted at the bottom of the air storage tank and a dew point monitoring device mounted at an exit of the air storage tank. In the drainage system of the control system, a pressure sensor and a drainage air control valveare mounted at the bottom of the air storage tank, and a dew point monitoring device is mounted at the exit of the air storage tank; the drainage time and drainage interval of the air tank can be accurately controlled according to the pressure and dew point of the air tank; therefore, the oxygen generation control system of the PSA oxygen generator has the advantages of more accurate control, more stable performance and high safety.