103results about How to "Guaranteed water level" patented technology

The invention discloses a closed-type constant-temperature multi-layer water circulation turtle cultivation system which comprises a multilayer turtle cultivation pool devices, a cultivation water environment adjusting device, an indoor air environment adjusting device and a cultivation system operation control device, wherein the multilayer turtle cultivation pool device comprises a plurality of turtle cultivation pools, circulating water return pipes, circulating water outlet branch pipes and main circulating water outlet pipes, primary solid liquid precipitation devices, blow-down valves and pollution discharge blow-down pipes; the cultivation water environment adjusting device comprises a solid-liquid separator, a blow-down valve, a sterilizer, a protein separator, a biological filtering device or tank, a circulating pump and a water heating device; and the indoor air environment adjusting device comprises an air heating device, an air oxygenating device and an insulation building. According to the closed type constant-temperature multi-layer water circulation turtle cultivation system, turtle cultivation environments can be comprehensively controlled, the land, the water and the energy are saved, an optimal ecological environment suitable for turtles to rapidly grow is established, turtle cultivation is free of drugs, and healthy and safe food sanitation requirements are met.

A multi-layer drawer-type apparatus for culturing the benthic aquatic animals in it, such as abalone, sea urchin, sea cucumber, etc, is composed of a cabinet-type case with multiple drawer channels, and multiple drawers (one for each drawer channel). It can be stand up in the water tank with drain.

The invention provides an anti-explosion cooling purifying device for a hydrogen reducing furnace, mainly comprising a spray water inlet pipe, a spray water sleeve, an anti-explosion buffering cavity, a cooling water sleeve, a water-supplying pipe, an open buffering water tank, a floating ball valve, a U-shaped communicating pipe and a waste discharging pipe. The spray water inlet pipe and the spray water sleeve are used for rinsing and cooling tail gas from the hydrogen reducing furnace for reducing the temperature of the tail gas so as to eliminate part of dust, ammonia and moisture in hydrogen as well as reduce the burden of the hydrogen recovering and purifying system; and the anti-explosion buffering cavity, the U-shaped communicating pipe and the open buffering water tank and the water column are used for isolating air in the reducing furnace from air outside so as to achieve the functions of water sealing, pressure releasing and anti-explosion. The invention is suitable for various hydrogen reducing furnaces and has the advantages of reasonable design, simplicity and practicability, safety and reliability as well as evident effect.

The invention discloses a dual-reservoir self-adjusting tidal power generation method and the system thereof. The tidal power generation system is composed of an upper reservoir, a water inlet gate of the upper reservoir, a pressure pipeline, a water-turbine generator set, a lower reservoir and a water outlet gate of the lower reservoir. The water inlet gate of the upper reservoir and the water outlet gate of the lower reservoir adopt the jacking-shaft type hydraulic power self-regulation gate, so that the upper reservoir can fully introduce the tidal water, and the lower reservoir can fully discharge the tail water of a power station; furthermore, the inertia rise and fall of the tide are utilized, thus keeping the working head of the water-turbine generator set to the maximum extent, thus effectively improving transformation efficiency by utilizing the tidal energy to generate power, and solving the problems with a tidal power station, such as sediment accumulation, etc. Compared with the previous tidal power generation system, the novel tidal power generation system has the advantages of high energy conversion efficiency, long service life, simple structure, convenient operation, all-weather continuous generation, saved investment, research and promotion value, etc.

The invention discloses a method for accurately positioning impacting hole-drilling and pile grouting. The method comprises the steps of measuring a hole position, burying a protective casing, preparing mud, drilling a hole, checking the hole, cleaning the hole for the first time, manufacturing and installing a reinforcing cage, installing a guide pipe, cleaning the hole for the second time and grouting concrete. According to the method for accurately positioning impacting hole-drilling and pile grouting, the pile hole can be accurately positioned through the design of guard piles, so that theconstruction of a drilling machine is facilitated; the protective casing is buried so that the hole opening can be protected and ground stones can be prevented from falling into the hole, meanwhile,the level of the mud can be ensured, and the collapse of the hole can be prevented; and the hole is cleaned twice so that the sediment at the bottom of the hole can be effectively removed, the groutedpile body is not prone to be broken and filled with the mud, and the quality of the pile body is guaranteed.

The invention relates to a water level controller with two detecting lines. The water level controller consists of a direct current (DC) power supply, an exploring electrode circuit, a Schmidt triggering circuit, a working condition indicating circuit, a relay J and a control circuit. For an originally introduced product, a water tower can automatically control water drawing, and a circuit of the product needs three or more than three water level detecting signal lines. As the water tower or a water tank is further away from a water pump, in order to save line materials and reduce wiring trouble, the water level controller with the two detecting lines only adopts two detecting signal lines to form a water level automatic-control circuit with three detecting electrodes so as to control the operation of the water pump. As the number of the detecting signal lines of the circuit is reduced, the detecting lines are convenient to maintain, thereby improving the stability and the reliability of circuit operation; and compared with the like products, the water level controller has the characteristics of good generality, high reliability and the like and is simple and convenient to install and use.

Self-priming frequency converter water supply equipment comprises a negative pressure tank provided with an overflow control valve, a water pump, a check valve, a butterfly valve, an outfall sewer, a pressure sensor, a frequency converter control cabinet, a check valve by-pass and a water suction pipe; water is supplied for the negative pressure tank through the check valve by means of the outfall sewer; the water level of the negative pressure tank is controlled by the overflow control valve arranged on the negative pressure tank; the water in the negative pressure tank can be prevented from being overflowed and can be guided reliably so that a small circle is prevented from being formed to waste the energy; and a water pump sucks water through the negative pressure tank under the combined control of the frequency converter control cabinet and the pressure sensor so that the full-automatic frequency converter constant-pressure water supply is realized.

The invention provides a cyclic extraction type groundwater quality detection equipment system. The system comprises an extraction pipe, a self-priming pump, a water inlet pipe, a water tank, a watertank outlet pipe and a water return pipe, wherein the lower end of the extraction pipe extends into a sampling well; an inlet of the self-priming pump is connected with the upper end of the extractionpipe; the water inlet pipe is connected with an outlet of the self-priming pump; a water inlet of the water tank is communicated with the water inlet pipe, and a plurality of water quality parametersensors with different indexes are distributed in the water tank; the water tank outlet pipe is communicated with a water outlet of the water tank; the upper end of the water return pipe is connectedwith the water tank outlet pipe, and the lower end extends into the position, below the groundwater level and close to the water surface, of the sampling well. A water sample is extracted from the bottom of the sampling well, water quality is detected by detection equipment on the ground, meanwhile, the water sample is not reserved, the extracted groundwater is reinjected into the upper water level layer of the same sampling well in real time, groundwater sampling is facilitated for a technician while groundwater quality is monitored on line, disturbance to quality of sampling water from the well bottom is reduced to the greatest extent, and water level in the well is guaranteed.

The invention relates to a rice field transformation method suitable for rice-turtle culture. The rice field transformation method suitable for rice-turtle culture is characterized by comprising the following specific steps: 1)digging a Z-shaped ditch in a rice field; 2) arranging a dam around the rice field, and connecting the dam with rice field blocks by tractor roads with the width of 3-4m, wherein the tractor roads of two adjacent rice field blocks are oppositely arranged; 3) respectively arranging a water inlet and a water outlet on two sides, which are near the tractor road, of the dam, wherein the water inlet and the water outlet are oppositely arranged, each water outlet is embedded on the lowest position of the ditch and comprises a high water level water outlet, a lower water level water outlet and a bottom water outlet which are regulated by a water level regulation pipe. The rice field transformation method disclosed by the invention is suitable for the rice-turtle culture mode, has good convenience and is favorable for large-scale production.

The invention relates to a vortex solidification underground water remediation system. The vortex solidification underground water remediation system is arranged in an underground water to-be-remediated area, and comprises a pumping well, water injection wells and fences. The pumping well is formed in the center of the to-be-remediated area, the multiple water injection wells are arranged at intervals along the outer contour line of the to-be-remediated area, an inorganic inert adsorption material is injected into the water injection wells, and the closed adsorption material fences are formedon the outer side of the to-be-remediated area, wherein the adsorption material fences have good water permeability, and the height of the fences is at least equal to the covering depth of polluted underground water. By performing large-drawdown pumping on the pumping well and large-flow reinjection on the water injection wells, a cone of depression is formed, and after the adsorption material adsorbs pollutants in the underground water, the pollutants are degraded and solidified, gather towards the pumping well group along with the migration of the underground water and then are pumped to thesurface through the pumping well group for surface treatment and purification. The vortex solidification underground water remediation system has the advantages of small pumping amount, short cycle and large treatment range.

The invention relates to a water circulation waste gas purification machine, which comprises a casing, a water circulation purification device and a decomposition filtering screen, wherein the water circulation purification device is positioned at one side inside the casing; the decomposition filtering screen is vertically positioned at the other side of the casing; a gas inlet is formed in a position, corresponding to an inlet of the water circulation purification device, of one side of the top of the casing; an atomization spray nozzle, filter water and a spraying head are arranged inside the water circulation purification device; a gas inlet fan is arranged in a position of the gas inlet; the atomization spray nozzle, the filter water and the spraying head form a circulation loop; a gasguide dehumidification device is also arranged in the water circulation purification device. The purification machine has the advantages that the purification efficiency is improved; in addition, water mist or water body after the water spraying dust removal purification and the filter water can be cyclically used; the water resources are effectively saved; the air conditioner production environment and the indoor cold air can be cyclically purified, so that the repeated utilization can be realized; the cold air is prevented from being exhausted to outdoor positions; the electric energy consumed by an air conditioner can be greatly reduced.

The invention discloses a circulating filtered water ornamental fish tank with an automatic valve capable of controlling a tank bottom blow-down pipe and belongs to a circulating filtered water ornamental fish tank which is assembled with a solenoid valve and a lever valve at the bottom of the fish tank body and is capable of automatically discharging and depositing dirt. The circulating filtered water ornamental fish tank comprises an upper aquarium and a lower water storage tank, wherein an assembled solenoid valve water blocking device is arranged above leakage pipes in the upper aquarium; the device adopts a structure that a vertical rod vertically penetrates through the middle of each leakage pipe; the middle section part of the vertical rod between an electromagnet and the leakage pipe penetrates through a magnetically attractable metal block and a water blocking plug; a conductive coil is wrapped to be a waterproof electromagnet by an insulating waterproof resin; the electromagnet is fixedly connected with an upper aquarium bottom plate through an electromagnet bracket; a water filtering box is arranged below the leakage pipes. The circulating filtered water ornamental fish tank disclosed by the invention has the advantages that smooth water flow in the leakage pipes is guaranteed by the electromagnet during electrification, water does not overflow from the upper aquarium, the water level of the upper aquarium during power failure is guaranteed, and the water does not overflow out of the lower water storage tank.

The invention discloses an anaerobic natural ventilation integrated composite vertical-flow biological water treatment filtering tank. The whole filtering tank consists of a downstream-flow filtering tank and an upstream-flow filtering tank. By means of a composite vertical-flow technology, sewage firstly passes through the downstream-flow filtering tank for enabling a part of ammonia nitrogen, nitrate nitrogen, total nitrogen and COD to be removed through a nitrification process and a denitrification process; and then passes through the upstream-flow filtering tank for enabling a part of ammonia nitrogen, nitrate nitrogen, total nitrogen and COD to be removed through the nitrification process and the denitrification process. Liquid levels in the two filtering tanks are ensured in an overflow discharging method. A horizontal height of an overflow hole in the upstream-flow filtering tank is lower than that of a water inlet hole of the downstream-flow filtering tank. A natural ventilation process is employed in upper parts of both the downstream-flow filtering tank and the upstream-flow filtering tank and an anaerobic water treatment technology is employed in lower parts of both the downstream-flow filtering tank and the upstream-flow filtering tank so that the anaerobic method and the natural ventilation is actually integrated. The invention relates to a non-point source sewage treatment technology and can be used in urban sewage treatment and industrial wastewater treatment in which water body properties are similar to urban sewage.

The invention provides an efficient passive spent fuel pool cooling system adopting a jet technology, and belongs to the field of nuclear power plant safety. The system comprises a jet subsystem, a heat exchanger inlet pipe section, a water space heat exchanger, a gas space heat exchanger, a heat exchanger outlet pipe section, a chimney and related pipeline values. When the temperature of a spentfuel pool is higher than a warning value, the system puts into operation automatically, air outside a fuel plant is injected through high pressure gas ejected by a high pressure gas storage tank in the jet subsystem, or water inside a water storage tank and air outside the fuel plant are injected at the same time, and powerful driving force is provided for a cooling loop while the total quantity of a cooling fluid is increased. When the water or gas inside the subsystem in the jet subsystem is used up, the system still can form passive natural circulation in virtue of the density difference ofair in cold and hot sections, and long-term cooling is carried out on the spent fuel pool, so that effectively passive cooling of the spent fuel pool in 3 to 6 days or even longer time can be guaranteed in accident conditions and when an external power supply is lost.

The invention relates to a soakaway pit dewatering device and a soakaway pit construction method. The soakaway pit dewatering device comprises a pile casing with a top opening, a water pumping pipe extending to the bottom of the pile casing is arranged in the pile casing, a water inlet end of the water pumping pipe is connected with a water pump, the water outlet end extends out of the pile casing, a plurality of water inlet holes are uniformly formed in the side wall and the bottom of the pile casing, the water inlet holes of the side wall of the pile casing extend to the middle of the pile casing from the bottom of the pile casing, a steel plate water stop ring is arranged on an outer ring of the top of the pile casing, a scaleplate which moves up and down along the inner wall of the pile casing is arranged on the inner wall of the pile casing, and a buoy is arranged at the bottom of the scaleplate; and the construction method comprises the following steps of pile casing installing,water pumping, graded sand and stone pouring, foundation concrete cushion layer, waterproof coiled material laying, fine stone concrete protective layer pouring and the like. According to the soakawaypit dewatering device and the soakaway pit construction method, in a foundation construction process, construction and dewatering can be carried out at the same time, the dewatering is stopped whilethe foundation concrete pouring is finished, and it is effectively ensured that the water level of a foundation pit continues to being below a cushion layer before the raft concrete construction is carried out.

The invention relates to automatic cooked noodle processing equipment, which comprises a noodle rolling machine, noodle cooking equipment and a noodle knife, wherein a cutting mechanism is arranged below the noodle knife; a noodle conveying belt positioned below the cutting mechanism is arranged on the noodle rolling machine frame; an inverted horn-shaped noodle cooking hopper at the end of the noodle conveying belt is arranged on the right side of the noodle rolling frame; a blower positioned above the noddle cooking hopper and blowing downward is arranged on the right side of the noodle rolling frame; the noodle cooking equipment comprises a noodle cooking frame positioned at the lower part; a heating furnace is fixed above the noodle cooking frame; an annular heating groove for adding water is formed in the heating furnace; and one side of the heating groove is positioned below the noodle cooking hopper. The noodle cooking processing equipment can automatically finish the process from raw noodle processing to noodle cooking, the automation degree is high, and the manpower and time are saved.

The invention discloses a water feeding system for multiple condensing boilers. At least two condensing boilers can be used, and the condensing boilers are respectively provided with a condensing economizer, the water feeding system comprises a soft water tank, a soft water pump, a deaerator, a water supply main pipe, a water return main pipe, a bypass adjusting valve, a branch pipe adjusting valve, a water intake adjusting valve and a PLC (programmable logic controller) control cabinet, all the condensing economizers adopt the parallel main pipe type water supply mode, and the amount of water fed into each condensing economizer is controlled by the water intake adjusting valve according to the exhaust gas temperature; the water supply main pipe and the water return main pipe are communicated via the bypass adjusting valve, and the water return main pipe is also connected with an inlet of the deaerator; a branch pipe on the water return main pipe is communicated with the soft water tank through the branch pipe adjusting valve; the soft water tank is communicated with the water supply main pipe through the soft water pump; and the whole water feeding system is controlled by the PLC control cabinet. The effect of balance of water supply for different condensing boilers in different operating modes can be realized, the thermal efficiency of the boiler can be increased, the normal water level of the deaerator can be ensured, and automatic control can be realized.

The invention relates to noodle cooking equipment. The noodle cooking equipment comprises a noodle cooking rack at the lower portion, a heating furnace is arranged above the noodle cooking rack and provided with an annular heating tank for adding water, and the heating tank is internally provided with a plurality of rotating fake noodle cooking pots and a heating tube; a gas stove and an exhaust fan are arranged below the noodle cooking rack, one end of the heating tube penetrates through the heating tank downwards and extends to the portion above the gas stove, the other end of the heating tube penetrates through the heating tank downwards and is connected with the exhaust fan, and one side of the heating tank is located below a noodle putting hopper. The fake noodle cooking pots in the noodle cooking equipment can rotate, noodles in a noodle cooking hopper can be circularly heated, the noodle cooking hopper can topple outwards through the upward rotation of fake pot handles, the timefor waiting the noodle to be well cooked is saved, the efficiency is improved, and the noodles cannot be cooked for a too long time.

The invention relates to the technical field of pump manufacturing, in particular to a manufacturing method of a rotational flow self-priming pump. The rotational flow self-priming pump comprises a motor and a pump body, the pump body comprises a suction chamber, an impeller chamber, and a pressing-out chamber, the suction chamber, the impeller chamber and the pressing-out chamber are each formedthrough splicing of steel plates, and the manufacturing method comprises the steps of A, steel plate blank preparing, B, machining and forming shapes needed by the steel plates corresponding to the suction chamber, the impeller chamber and the pressing-out chamber, and c, welding and fixing the steel plates corresponding to the suction chamber, the impeller chamber and the pressing-out chamber toform a pump body. The pump body is formed through welding fixing of the steel plates after stamping forming, the surface precision of the steel plates is high, the water flow can smoothly enter channels, the volume losses are reduced, the hydraulic efficiency is improved, the problem that in the cooling solidification time after casting, a shrinkage cavity is easily formed, normal work of the rotational flow self-priming pump is prevented from being affected, and work efficiency is high.

The invention discloses an aquatic seedling domesticator and application thereof. The aquatic seedling domesticator comprises a water tank, an automatic water feeding device arranged on the water tank, a stirring device, a drainage and pollution discharge device, a feeding and bait discharging device, phototaxis training devices and an anti-overflow drainage device, wherein the automatic water feeding device is connected with a water inlet pipe, water is added into the water tank, the stirring device is arranged in the middle of the water tank, the drainage and pollution discharge device is arranged at the lower end of the water tank, the feeding and bait discharging device is movably arranged on an upper top plate of the water tank, the phototaxis training devices are symmetrically arranged on the side walls of the two ends of the water tank in the length direction, and the anti-overflow drainage device is arranged on the side wall of the water tank in the width direction and communicates with a water outlet pipe of the drainage and pollution discharge device. When the aquatic seedling domesticator is used, seedling phototaxis clustering training can be carried out through light conversion, material training is facilitated, the survival rate after seedling throwing can be effectively guaranteed, aquatic seedlings can be well domesticated through the aquatic seedling domesticator, and the aquatic seedling domesticator has the advantages of being easy and convenient to use and facilitates domestication.

The invention relates to a floating ball type self-balance dewatering device and a dewatering circulation area calculating method thereof. The floating ball type self-balance dewatering device comprises a shell, a floating ball, a drain pipe, a water inlet pipe structure and a gas balance pipe; the shell is arranged in a normal water level position higher than a heat exchanger in a dewatering system; a water outlet is formed in the bottom end of the shell; the floating ball is arranged in the water outlet; the top of the shell is communicated with an upper gas space position of the heat exchanger through the gas balance pipe; the shell is provided with a water inlet end and a drain end; the water inlet end of the shell is communicated with a water outlet end of the heat exchanger through the water inlet pipe structure to convey water of the heat exchanger into the shell; and the drain end of the shell is arranged on the bottom surface of the shell, and is communicated with the drain pipe. The floating ball type self-balance dewatering device has such characteristics and beneficial effects as simple structure, few mechanical moving parts, rigidity, durability, prevention of the steam leakage, prevention of the heat loss, prevention of the environmental pollution, low working environment requirement and wide application range.

The invention discloses a special liquid medicine water bath heating and concentrating device used in a clean area, belonging to the technical field of liquid medicine concentration. The device comprises a concentration tank (1), a water bath interlayer pot (2), a liquid receiving tank (24), two coil pipe condensers (12 and 20) and a pipe bundle condenser (19), wherein the concentration tank (1) is connected with the liquid receiving tank (24) by the pipe bundle condenser (19) and one coil pipe condenser (20). The special liquid medicine water bath heating and concentrating device is characterized in that the water bath interlayer pot (2) sleeves the concentration tank (1) by connecting flanges (7); a steam discharge pipe (11) of the water bath interlayer pot (2) is communicated with a condenser pipe (15) of the other coil pipe condenser (12); the two coil pipe condensers (12 and 20) are communicated with a condenser pipe of the pipe bundle condenser (19). The device is capable of preventing the temperature and the humidity of the clean area from being damaged and guaranteeing the production environment of the clean area, and has the beneficial effects of being high in cooling efficiency, less in energy consumption, etc.

The invention discloses a self-water-drawing instantaneous electric heating drinking boiling water faucet which comprises an outer shell (1), a water pump (2), a ceramic electric heating pipe (3), a bidirectional thyristor (4), a water level electrode (5) and a circuit board (6). According to the faucet, the outer shell is a hollow thin-wall plastic shell which is provided with a stand column, a cantilever and a water outlet. The ceramic electric heating pipe is provided with an outer pipe body, an inner pipe body, a water inlet pipe and a water outlet pipe. A power line is connected with the circuit board, the ceramic electric heating pipe and the bidirectional thyristor. The trigger electrode of the ceramic electric heating pipe is controlled by the circuit board. According to the technical scheme, in the working process, a boiling water button is triggered, the water pump enables barreled drinking water to be pumped into the ceramic electric heating pipe under the control of the circuit board, the drinking water is heated in the position, between the outer pipe body and the inner pipe body, of the inside of the ceramic electric heating pipe and is overheated to be boiled in the inner pipe body, the boiled water flows out continuously through the water outlet pipe and the water outlet, and therefore the purposes that the boiled water can be continuously obtained at any time and interval waiting is needless are achieved in kungfu tea brewing.

The invention discloses a soaking device for reeled silk processing and production. The soaking device comprises a soaking box, wherein fixing blocks are fixedly arranged on the outer walls of the twosides of the soaking box, and supporting rods are fixedly arranged at the top ends of the two fixing blocks; the top ends of the two supporting rods are fixedly connected with the two ends of a transverse rod correspondingly, first electric push rods are fixedly arranged on the two sides of the bottom end of the transverse rod, and the telescopic ends of the two first electric push rods are fixedly connected with the two sides of the top end of a pressing net correspondingly; and a heating block is fixedly arranged in the middle part of the bottom end inside the soaking box, and a cavity is formed inside the heating block. According to the soaking device for reeled silk processing and production, the arranged first electric push rods push the pressing net to move up and down, so that reeled silk floating on the water surface is conveniently pressed into water, it is guaranteed that the reeled silk is soaked comprehensively, and therefore the reeled silk soaking effect is guaranteed; and arranged second electric push rods push a filtering net, so that the soaked reeled silk is conveniently pushed out of the water surface, meanwhile, the draining effect is achieved, and the later-period reeled silk drying efficiency is improved.

The invention relates to the technical field of drainage, in particular to an anti-blocking water-permeable passage. The anti-blocking water-permeable passage comprises a face brick layer, a water-permeable layer, a water storage layer and a base layer which are sequentially arranged from top to bottom, wherein the face brick layer comprises solid pavement bricks which are continuously spliced andwater-permeable channels which are arranged on the solid pavement bricks; each pavement brick is provided with one water-permeable channel, and the water-permeable channels vertically run through thepavement bricks; the water-permeable layer is made of water-permeable concrete with the same aggregate grade and the porosity of about 20%; the water storage layer is formed by compacting graded broken stone particles. Filter bags capable of being replaced in time and capable of filling the whole water-permeable channels are utilized, the problem that an existing water-permeable layer is blockedand a whole pavement needs to be finished is solved, the construction cost is reduced, construction is facilitated, the service life of the pavement is prolonged, and the water seepage efficiency of the pavement is improved.

The invention discloses a safety and environmental-protection device for water drainage of a paddy field, and belongs to the field of rice environmental-protection planting. The lower part of a water drainage pipe of the safety and environmental-protection device extends into a tubular hole of a pedestal; a transverse flange plate of the water drainage pipe is fixedly arranged on the upper surface of the pedestal; a water outlet in the lower end of the water drainage pipe communicates with the tubular hole; the tubular hole is connected with a water passage which is constructed in soil inside the paddy field; and the water drainage pipe is sleeved by a ring-shaped floating body. A matching surface of the ring-shaped floating body is matched with the outer surface of the upper surface part of the water drainage pipe, so that the ring-shaped floating body can slide on the upper surface part of the flood-discharge pipe, and can open or close a water drainage pipeline while sliding up and down. The safety and environmental-protection device for water drainage of the paddy field disclosed by the invention is compact and reasonable in structure, is convenient to manufacture and use, is high in degree of automation, is good in effect of automatically draining water and keeping water level in the paddy field, does not need people to watch during automatic water drainage, automatically closes the water drainage channel to keep water level while a water surface in the paddy field is lower than set irrigating level, is safe and environmental-protection water drainage equipment of the paddy field, and is necessary equipment for automatically managing the paddy field.

The invention mainly includes an engine air passage, an air filter disposed on the engine air passage, an atomization barrel connection with the engine air passage through an atomization induction pipe, an atomizer disposed in the atomization barrel, an auxiliary air filter connected with the atomization barrel through a connecting pipe and an intake water supply device connected with the atomization barrel capable of supplying water to the atomization barrel continuously to keep a certain water level in the atomization barrel, so as to realize that the atomized water can be supplied continuously.

The invention discloses a fishpond safety protection device and belongs to the field of aquaculture. An annular floating body sleeves in the vertical direction of the L shape of a water outgoing pipe, a water outgoing hole is formed in an inner ring face, a water incoming hole is formed in one side of a lower face, and an inner communicating pipe connecting the water incoming hole with the water outgoing hole is arranged in a buoyancy cavity; a sealing ring is matched with the outer surface in the vertical direction of the L shape of the water outgoing pipe to enable the annular floating body to slide in the vertical direction of the L shape of the water outgoing pipe or matched with the inner ring face to enable the annular floating body to slide on a sealing ring mounted in the vertical direction of the L shape of the water outgoing pipe and can open or close a drainage channel when sliding up and down. The fishpond safety protection device is compact and reasonable in structure, convenient to manufacture and use, high in safety protection capability and automation level and good in effect on automatically draining water and maintaining water level in a fishpond; a person is not needed for guarding during automatic draining, the draining channel is automatically closed to maintain the water level when the water level in the fishpond is lower than a set breeding water level, and the fishpond safety protection device is necessary equipment for safety protection and automated management of the fishpond.

The invention discloses a circulating fluid bed unit anti-dry burning and water level adjusting device and a control method therefor. The device comprises a condenser, a steam seal cooler, a slag cooler, a low-temperature coal economizer, a first low-pressure heater, a second low-pressure heater, a third low-pressure heater and a deaerator, wherein the condenser is arranged at the starting end ofa condensed water pipeline, the deaerator is arranged at the tail end of the condensed water pipeline, and the steam seal cooler, the slag cooler, the low-temperature coal economizer, the first low-pressure heater, the second low-pressure heater, and the third low-pressure heater are sequentially arranged on the condensed water pipeline. A condensed water recycling pipeline is arranged behind thefirst low-pressure heater, and the pipeline is a system pipeline for preventing dry burning of the slag cooler; a pipeline to the condenser is arranged on a backwater pipeline behind the slag cooler,and the pipeline is a system pipeline for deaerator water level adjusting; and according to the device, the water level of the deaerator can be adjusted, cooling water for the slag cooler of a circulating fluid bed can also be provided so that the circulating fluid bed can stably operate even under the working conditions with condensed water.

The invention discloses a fire-fighting water tank for filtering and collecting rainwater. A water storage cavity is formed in a machine body; a heat insulation pad used for heat insulation is arranged on the outer side of the water storage cavity; a first transmission cavity is formed in the upper side of the water storage cavity; a filtering cavity is formed in the upper side of the first transmission cavity; a rainwater collecting cavity communicated with the exterior of the machine body is formed in the upper side of the filtering cavity; and a water injection device used for adding waterinto the water storage cavity when the water level is too low is arranged in the water storage cavity. The fire-fighting water tank is simple and convenient to operate, the manufacturing cost is low,the partition plate I can slide up and down along a guide groove III and a partition plate II can slide up and down along a belt wheel I to guarantee the water level in the water storage cavity, the scraper can be driven to rotate through redundant water in the water storage cavity, impurities filtered out by the filter screen are scraped into a slag discharging groove, and the filter screen is prevented from being blocked.