109results about How to "Sufficient water supply" patented technology

The invention relates to a novel non-pressure irrigation rig. The water outlet valve of a water supply tank is opened, irrigation water flows into a water level control tank, when the water level of the tank is higher than h1, an intake tube is submerged, air suction is changed into water inflow until the water level in the intake tube is equal to the water level in the water supply tank, the irrigation water does not flow into the water level control tank, the water level of the tank is stabilized at the water level slightly higher than h1, the irrigation water enters into a filling area at the upper part in a U-shaped slot by virtue of a permeable cover plate and a sand inverted filter from the bottom in the U-shaped slot of the irrigator, a soil saturation water layer which is at the same height of the water level of the water level control tank and is lower than the upper edge of the U-shaped slot, water of the saturation water layer rises to the root layer of a crop in a capillary water way, a crop consumes water to cause the water level of the water level control tank to be lower than h1, the intake tube comes out of water surface, air is sucked in air bubbles, the irrigation water flows into the water level control tank, the water level rises to submerge the intake tube again, the crop consumes the water to cause the water supply process to be repeated, the output of supplying water is increased or reduced along with water consumption, irrigation is adaptive, and the irrigation rig is simple to operate and is convenient to use.

A Robotic Algae Harvester (RAH) of the present invention works by providing a CO2 collection mechanism that is installed in power plants or vehicles. These systems are available using current technology and have been proven to be scalable. CO2 is then transported to RAH using ships. The RAH will feed and re-circulate algae broth through the photobioreactors (PBRs). The PBRs float in the ocean while the algae through photosynthesis will transform the CO2 into biomass in a continuous process. The extracted algae will processed into a stable mix of oil and bi-product and transferred to the ship that brought the CO2. The algae is then processed onshore in some of the following manners: converted to biodiesel via transesterification; converted to bio-ethanol via fermentation; burned for electricity generation; and / or used as protein for animal feed or food products.

The invention provides a wine cabinet with a humidification control system. The problem that the humidity inside a wine cabinet existing in the prior art is not controlled well can be solved. According to the technical scheme, the wine cabinet with the humidification control system comprises a refrigerating system and the humidification control system; the refrigerating system comprises a compressor, an evaporator and a condenser; the humidification control system comprises a humidification device, a condensate water recycling device and a controller; the humidification device comprises an ultrasonic humidifier and a water tank; the condensate water recycling device comprises a water containing box arranged at the bottom of the evaporator, the lower portion of the water containing box is provided with a water guiding pipe communicated with the water tank, and the controller controls the running of the humidification device and the condensate water recycling device. The wine cabinet can achieve the purposes of fast humidifying and accurate humidity controlling, is safe, sterile and convenient to use, and satisfies users completely.

The invention relates to a high-efficiency environmental-friendly bare-root transplantation method for plant seedlings, which is characterized in that the method comprises the steps of 1) using Pafcal as transplantation medium and soaking with water for future use; 2) selecting annular cutting seedlings or annular sowing seedlings which are consistent in growth vigor and full in plant type as plant materials; 3) performing root system medium treatment on the plant materials, washing away residue medium on root systems, trimming branches, picking leaves and pruning the root systems; 4) planting the treated plant materials in Pafcal according to a standard of 4-6 plants for common vine plants, 3-4 plants for bushes or small trees and 3-5 plants for herbaceous plants; 5) when new roots do not grow at an early stage, keeping leaf surfaces to be wet, taking sunshade and cooling measures when indoor temperature is higher than 35DEG C and illumination intensity exceeds 40000lx, and performing foliage application after new roots grow; 6) when the surface of the entire plant medium is full of the root systems of the cutting seedlings and the entire nutrient pot is full of plant branches and leaves which fully cover the plant medium, taking out the seedlings. The high-efficiency environmental-friendly bare-root transplantation method for plant seedlings provided by the invention has the advantages of short period, simplicity and convenience in operation, high efficiency and environmental friendliness.

The invention discloses a simulation test device for researching water pump parallel machine set operation mechanism and control strategy. A water circulation loop is composed of a pool, a submerged pump, a flow meter, a water inlet tank, a parallel water pump machine set, a valve, a pipeline, an automatic regulating valve, a high cistern and the like; the simulation test device is provided with measure and control instruments, such as a pressure transducer, a toque-revolution speed transducer, a transducer, a virtual instrument, an electric control loop and the like. The invention is characterized in that the water inlet tank is arranged between the big pool and the parallel water pump machine set; water amount to the water inlet tank is simulated by controlling the revolution speed of a submerged pump in the pool; water consumption law is simulated with the method that the automatic regulating valve and the transducer provide two modes of throttling and speed change; the combination characteristics, pump characteristics, device characteristics, power characteristics of shafts with different revolution speeds and the like of the water pump machine set can be measured by virtual instrument technology; and the simulation test is performed to different scheduling models and operation control strategies so as to detect and compare the performance and energy saving effects of different models.

The invention belongs to the technical field of construction, and particularly relates to a spraying, dust-settling and cooling device for construction. The device comprises a moving vehicle body, a power mechanism, a spraying mechanism and a water storage tank, wherein the power mechanism comprises a driving part and two moving parts; each moving part comprises two piston cylinders, pistons are slidably arranged in and connected with the piston cylinders, and reset pieces are arranged in the piston cylinders; a connecting rod is arranged between and connected with the two pistons of one moving part, a connecting frame is connected to the connecting rod, and a first rack is arranged on the connecting frame; each piston cylinder is connected with a water inlet pipe and a water spraying pipe; a one-way water inlet valve is arranged on each water inlet pipe, and a one-way drain valve is arranged on each water spraying pipe; the driving part comprises a first incomplete gear and a drivingpart; and the first incomplete gear is located between the connecting frames of the two moving parts and can be engaged with the first racks. According to a scheme in the invention, the spraying mechanism is supplied with water in virtue of two piston cylinders all the time, so it is guaranteed that the spraying mechanism has enough water supply source and can fully spray water mist, and better and more sufficient dust settling and cooling effects are achieved.

The invention relates to a method for covering film for cultivating seedlings on a dry land, belonging to the technical field of agricultural planting, which is characterized in that a tiling film (2) is covered on a box surface after fertilizing, watering, seeding and covering earth on a dry land seedbed; the thickness of the tiling film can be smaller or equal to 0.008mm and the periphery of the tiling film is compacted by clod; arc strips (3) with a length of 200cm to 220cm are inserted into the soil beside the box at both sides of the box and the depth for soil insertion is 10cm to 15cm to lead the arc strip to be in a natural arc shape. The distance between the arc strips is 60cm to 80cm to form an arc frame. An arc frame film (1) is covered on the arc frame and the thickness of the arc frame film is larger than or equal to 0.014mm, both ends of the seedling box are respectively covered by one more bamboo strip to lead the plastic films at both ends to be positioned between two layers of the bamboo strips. After covering the film, the periphery is compacted by clod; after more than 80 percent of seeds come out of the land or the rice is in the stage of needle leaf, the tiling film is removed. The invention is applied during early spring in lower temperature period so as to better solve the problem of water insufficiency on the surface soil horizon of the seedling box and lead the seeds to acquire sufficient water supply; the invention has the advantages of very uniform moisture on the box surface, good insulating effect and slow change of temperature, which is very beneficial to the growth of early spring crops.

The invention relates to a control system used for irrigation which can automatically irrigate green plants which are cultivated in a cultivation device and guarantee moisture required by transpiration and photosynthesis of plants. A high-level water storage container, an electromagnetic valve, a planting device, a low-level water storage container and a water pump are sequentially connected by virtue of a water supply pipe to form a liquid circulating route, a heater, a cooling tower and a fertilizer storage device are additionally arranged, and temperature and circulation flow of water and addition of fertilizer are controlled by virtue of a water level sensor, a temperature sensor, a humidity sensor and a power distribution control cabinet, thus the advantages of saving water, saving energy and saving labour and being convenient to maintain can be realized, and the control system disclosed by the invention is applicable to irrigation on a roof, a balcony and a shed; and remote monitoring is realized by virtue of a computer, high-quality organic agricultural products are produced, and the control system disclosed by the invention is especially applicable to urban roof agriculture and shed greenhouse organic agriculture.

The household fire-fighting device of the present invention has a box, and a motor is fixed below the inner side of the box. The output shaft of the motor is connected to the water pump through a coupling, and the water inlet of the water pump is connected to the water inlet joint. On the outside of the side of the box, the water outlet of the water pump is connected with a water outlet joint through a pipeline. The water outlet joint is located above the box body, and a partition is arranged on the inside of the box body, and a space for placing a soft water spray pipe is formed above the partition board. , there is a handle on the top of the box. When in use, one soft water pipe can be connected with the water inlet joint and the household tap, the other soft water pipe with nozzle can be connected with the water outlet joint, the motor can be started to make the water pump work, and the fire extinguishing water can be continuously supplied from the water outlet joint. Sufficient and continuous, the fire extinguishing effect is good.

The invention discloses a grafting method of a walnut. The grafting method comprises the following steps that (1) a stock is selected, and a connector, an alpha-naphthylacetic acid spray connector and a saw bite section are manufactured; (2) cladus of the walnut of the 755 strain is selected and stored, and a cutting face is manufactured; (3) the cladus is treated with mixed pesticide liquid with 50 percent thiophanate methyl wettable powder 800-fold-1,200-fold liquid to dichlorvos 50-fold liquid to 200-fold Bordeaux mixtures of 1:1:0.5; (4) after the cladus starts to sprout, a small hole of 1 mm to 2 mm is drilled in a plastic film for ventilation, and is gradually expanded, and when small leaves unfold, the plastic film is removed. The cladus and the stock are treated through pesticide, the black plastic film coated with Vaseline is used for binding the connecting position, the problem that due to wax sealing, air permeability is poor, and the cladus is scalded is effectively solved, and the problem that diseases easily occur in the traditional grafting process is solved.

The invention discloses a shower head which comprises a body and a plurality of water inlets. The body comprises an annular first cover plate and an annular second cover plate, the second cover plate is matched with the first cover plate, and a slit-shaped water outlet is jointly defined by the inner edge of the first cover plate and the inner edge of the second cover plate; the water inlets are formed in the outer edge of the body and are communicated with the water outlet via liquid. The shower head has the advantages that the slit-shaped water outlet is formed in the shower head, so that water can be discharged from the shower head slowly; the shower head is novel in water outlet form and is provided with the multiple water inlets which are communicated with the water outlet via the liquid, and accordingly sufficient water supplied by the shower head can be guaranteed.

The invention discloses a preparation method of a textile material for photo-thermal sea water desalination. The preparation method includes the steps: A preparing 10-25g / L graphene oxide dispersion liquid to serve as printing paste, and performing single-side printing on a polypropylene needling non-woven fabric; B soaking and rolling the non-woven fabric in crosslinking finishing fluid twice, and pre-drying the non-woven fabric at the temperature of 80-100 DEG C to obtain a graphene oxide printing polypropylene fabric; C soaking the graphene oxide printing polypropylene fabric into reductionfinishing fluid; D taking out the soaked polypropylene fabric, washing the polypropylene fabric by deionized water, and drying the polypropylene fabric to obtain the textile material for photo-thermal sea water desalination. According to the method, stable and low-cost non-woven materials serve as a thermal insulating layer and a water channel, solar energy is effectively utilized, and water is sufficiently supplied for the surface of a photo-thermal material. The prepared photo-thermal conversion material is high in evaporation efficiency, any electric drive is omitted by the aid of solar drive, and cost performance is high. The method is simple to operate, low in cost, green and environmentally friendly, mass production can be achieved, and functional application of a textile is widened.

The invention provides a high-yield anti-disease potato planting method and relates to the technical field of vegetable planting. The high-yield anti-disease potato planting method comprises the following steps: (1) selecting a variety; (2) storing and selecting seed potatoes; (3) cutting the seed potatoes; (4) sterilizing the seed potatoes, and performing germination acceleration; (5) drying potato pieces in air; (6) selecting and preparing a land; (7) sowing seeds; (8) performing field management; and (9) harvesting potatoes. By adopting the method, the problems that potatoes planted by using a conventional potato planting method are high in morbidity, poor in quality and low in yield are solved.

The invention relates to agricultural planting devices, in particular to a vegetable ridging, film mulching and drip irrigation hole sowing machine which comprises a drag frame, a speed change device (1) and a protection cover (2). The speed change device (1) is arranged above the protection cover (2), a rotary cultivation device (3) is arranged below the protection cover (2), and two ends of an output shaft of the speed change device (1) penetrate a fertilizer application tank (4) to be connected with driving wheels of a first transmission gear (5) and driving wheels of a second transmission gear (6); driven wheels of the first transmission gear (5) are connected with the rotary cultivation device (3), and two driving wheels are arranged at an output end, which is connected with the second transmission gear (6), of the speed change device (1); a seed hole stroking device (17) is arranged at the rear end of a framework (12), and a soil loosening device (10) is wider than a film mulching device (14). The vegetable ridging, film mulching and drip irrigation hole sowing machine has the advantages that follow-up treatment can be carried out seed sowing holes, accordingly, the emergence rate can be increased, and seeds can be saved; good soil loosening effects can be realized in running procedures, and requirements on soil can be met when the soil is required to cover multiple rows of ridges.

The invention discloses an intelligent beehive. The beehive comprises a hive body and an intelligent housekeeper system, wherein the hive body is provided with a hive cover, an auxiliary cover, a super hive, a main beehive body, a movable baseplate and a hive bottom frame which are stacked from top to bottom in sequence; the intelligent housekeeper system includes a power supply module, an ARM processor, a GSM module, an LCD (liquid crystal displayer), a camera, a temperature and humidity sensor, a buzzer, a humidifier, a small fan, a human body infrared sensor module and an ATGM336H GPS positioning module. Intelligent management of the beehive is achieved, and the beehive can be remotely monitored, so that internal environmental parameters of the beehive are always stabilized under conditions suitable for growth and reproduction of bees.

The invention mainly relates to a pre-film-mulching automatic seeder used according to clay texture and belongs to the field of agricultural machines. The seeder is characterized in that soil planing arms are installed in a round array shape on the outer ring of an electric cylinder and are connected with soil planing cutters, and the electric cylinder can drive the soil planing arms and the soil planing cutters to rotate and work forwards and reversely; a seeding mechanism comprises a seed storage bin and a seed conveying belt which are installed in a cylindrical support, the seed storage bin is connected to one end of the seed conveying belt, and a pre-film-mulching device is connected to the other end of the seed conveying belt and can cover films on seeds; the pre-film-mulching device is connected with a seed outlet of the cylindrical support and can push the film-mulched seeds from the seed outlet. By means of the seeder, automatic pitting and seeding can be achieved, wet soil backfill can be automatically achieved, the step of watering after seeding is omitted, seeds can obtain sufficient water, and germination and sprouting are benefited. The surfaces of the seeds are covered with films in advance before seeding.

The invention discloses an intelligent automobile washing and drinking device which comprises a boiled water heating system and a warm water heating system which are independently arranged and communicated through a pipeline, wherein an independent water discharge system is respectively arranged on each of the boiled water heating system and the warm water heating system; a heating device is respectively arranged on each of the boiled water heating system and the warm water heating system; the heating devices are provided with heat energy support by the heating systems mounted on an automobile exhaust manifold; the systems are respectively automatically controlled through a circuit system. The intelligent automobile washing and drinking device is convenient and reliable; by use of the intelligent automobile washing and drinking device for hand washing, threat of bacterial viruses to the human body can be reduced; the intelligent automobile washing and drinking device can also provide drinking water at any time when people go out, so that the human body can be supplied with sufficient water. The intelligent automobile washing and drinking device solves not only the washing problem but also the drinking problem.

The invention discloses a field cultivation method of purple-flower bletilla striata tissue culture seedlings. The method includes the following steps of 1, selecting a suitable land parcel for planting bletilla striata; 2, conducting deep ploughing and soil smashing on the selected land parcel; 3, conducting light shielding on the whole planting land parcel and erecting a sprinkling irrigation system; 4, conducting seedling hardening; 5, conducting transplanting; 6, conducting field management. According to a planting technique of the purple-flower bletilla striata tissue culture seedlings, harvesting can be achieved only within two years, and the yield per mu can reach about 2.5 tons. The suitable land parcel is selected according to environmental conditions suitable for survival of bletilla striata, and the great environmental conditions are provided for good growth of bletilla striata after bletilla striata is transplanted into the field; furthermore, by preparing the soil, alleviating soil hardening, carrying out steam sterilization to assist in plastic film mulching, killing pest eggs and weed seeds and the like, elimination of weeds at the early stage of transplanting is achieved, the situation that the growth of the seedlings is influenced since there are too many weeds during a seedling period is avoided, and the adverse impact generated on roots of the seedlings by weeding since the bletilla striata tissue culture seedlings grow slowly and the plants are small is overcome.

The invention discloses a water culture device for a cut branch of a forest, which is characterized by comprising a water culture chamber (1) in which a vertical plate (2) for horizontally or obliquely accommodating the cut branch of the forest (5), a water injector (3) arranged on the top of the water culture chamber (1), and a water supply device connected with the water injector (3) through a water injection pipe (17) so as to supply water to the water injector (3). In the water culture device, the cut branch of the forest is horizontally or obliquely arranged, an environment that a branch is grown on a trunk of a tree at a certain angle is fully simulated, water culture solution vertically fall back from top to bottom and flows through a cut end of the cut branch of the forest, the oxygen in the water culture solution is sufficient, the cut branch is uniformly supplied with water, the water culture effect is good, and the water culture device is light in structure and convenient to move.

The invention relates to the field of printing devices, and provides a printing fountain solution automatic centralized water supply proportioning system.The technical scheme of the printing fountainsolution automatic centralized water supply proportioning system is that the printing fountain solution automatic centralized water supply proportioning system comprises a dampening working fluid storage tank, and an automatic proportioning device is arranged on the dampening working fluid storage tank, a pipeline is connected with a water tank, the dampening working fluid storage tank is internally provided with a data monitoring system used for monitoring dampening solution usage data and the automatic proportioning system used for automatically adjusting and controlling dampening solution data, the dampening working fluid storage tank is connected with the pipeline, and a liquid level control member used for controlling the liquid level of the water tank to be within a working range isarranged between the pipeline and the dampening working fluid storage tank, a water pump is connected with the pipeline, andthe automatic proportioning device is connected with a fountain solution storage tank. The printing fountain solution automatic centralized water supply proportioning system is suitable for the centralized water supply proportioning of an offset printing machine.

The invention discloses an intelligent agricultural greenhouse irrigation system. The intelligent agricultural greenhouse irrigation system comprises a water tank, a rainwater collecting system, a bracket and a fertilizer adding system; the rainwater collecting system is fixedly connected to the top of the water tank; and the water tank is fixedly connected to the top of the bracket. The inventionrelates to the technical field of agricultural greenhouses. According to the intelligent agricultural greenhouse irrigation system in the invention, front and rear fixed side plates and a water collecting bucket at the bottom are arranged; in cooperation with turnable turnover plates at two sides, when a driving motor drives the two turnover plates to unfold, a normal rainwater collecting bucketcan be formed with the side plates and the water collecting bucket; the inlet area is large; the rainwater collecting efficiency is high; when it doesn't rain, the two turnover plates are combined, sothat the top of the rainwater collecting bucket is sealed; entrance of impurities, such as leaves, dust and insects, can be avoided; cleaning of water in the water tank is ensured; the frequent cleaning work in the later period is avoided; the pipeline blockage problem in a use process also can be avoided; two working modes can be rapidly switched; and thus, the intelligent agricultural greenhouse irrigation system is convenient to use.

The invention discloses an agricultural greenhouse environment control system based on a 5G network. The system comprises a greenhouse body. A ventilation electric door is arranged on an outer surfaceof a front end of the greenhouse body, a main control box is fixedly installed at a position, close to one side, of the outer surface of the front end of the greenhouse body, a greenhouse roof is arranged at a top end of the greenhouse body, and an illuminance sensor is arranged on the surface of the upper end of the greenhouse roof; a first water suction pump is fixedly installed on the outer surface of one side of the greenhouse body, a liquid storage tank is fixedly installed on the outer surface of the side, away from the greenhouse body, of the first water suction pump, and a liquid conveying pipe is fixedly installed at the upper end of the first water suction pump; and a lamp post and an irrigation pipe are arranged at the top end of an inner portion of the greenhouse body, the irrigation pipe is arranged below the lamp post, an illuminating lamp and a temperature increasing lamp are arranged on the outer surface of the lower end of the lamp post, and the illuminating lamp is arranged on one side of the temperature increasing lamp. The system is more energy-saving and environment-friendly, avoids waste of resources and is more suitable for popularization and application.

The invention provides a moisture regulation and control method for a date yard. According to researches on water consumption features of red dates under drop irrigation and analysis of water consumption amount of the red dates during different growth periods as well as effects of the water consumption amount to the output of the red dates, soil moisture conditions suitable for date tree growth and fruit garden moisture productivity are explored, proper soil moisture indexes for each growth period are determined and a date yard drop irrigation system with the goals of water conservation, excellent quality and high efficiency is set out; a date yard moisture high-efficient utilization technology system under the drop irrigation condition is established; and theoretical foundation and technical support are provided for sustainable development of south Xinjiang characteristic forestry and fruit industry.

The invention discloses an environment-friendly exothermic material for a floor and a preparation method of the environment-friendly exothermic material. The environment-friendly exothermic material is prepared from the following raw materials in parts by weight: 20-30 parts of an exothermic dry powder material, 1-10 parts of a binder and 80-120 parts of polyurethane, wherein the exothermic dry powder material is prepared by the following steps: weighing raw materials of components of the exothermic dry powder material, then adding the raw materials into a stirrer, and uniformly carrying out mixing by stirring to obtain the exothermic dry powder. According to the invention, various auxiliaries are added into waste polyester bottles, so that the prepared polyurethane heat-preservation material is more friendly to environment; the heat-preservation material is low in heat conductivity coefficient, good in flame retardancy, low in water absorption rate, and high in compression strength; and a mixture A is added into the polyurethane material as a filler, so that the prepared environment-friendly exothermic material has good mechanical property and electrical property, temperature rising is rapid, and exothermicity is uniform.

The invention relates to a safety protection device, in particular to a seedling safety protection device used for municipal intelligent parks. The technical problem to be solved by the invention is to provide a seedling safety protection device used for municipal intelligent parks, which is low in seedling death rate, rapid in growth and development and sufficient in water supply. In order to solve the technical problem, the invention provides the seedling safety protection device used for municipal intelligent parks; the device comprises a first motor, a screw rod, a nut, a guide block, a connecting rod, a guide rail, a lifting rack, a second motor, a support plate, an electric push rod, a water collecting tank, a siphon foaming sponge pillar, a strut, a shield and a fixing plate, wherein the water collecting tank is arranged at the right side of the strut, the electric push rod is arranged at the front side of the strut, the support plate is connected to the top of the electric push rod, a guide hole is formed in the support plate, and the siphon foaming sponge pillar is arranged in the water collecting tank. The safety protection device can achieve the effects of being low in seedling death rate, rapid in growth and development and sufficient in water supply.

The invention discloses a plant bionic high-concentration-salt-resistant solar evaporator device and preparation and application thereof. According to the method, plant bionics with the plant stems as the photothermal conversion material are adopted for the first time, waste plant stems are recycled, waste is turned into wealth, and air pollution caused by plant stem incineration is effectively improved. According to the method, the top surface of the plant stem is carbonized by using an alcohol lamp, the carbon black layer is formed through simple oxidation, the bionic top carbonized plant cauloid is prepared, and the method is simple in technological process, convenient to operate, good in light absorption performance and high in photo-thermal conversion efficiency. The plant stalks are carbonized after being manually punched, then the cotton threads penetrate into the holes for drainage, one-way jet flow transmission can be achieved through the capillary acting force of the cotton threads by means of driving force generated by the height difference and the concentration difference of solutions, it can be guaranteed that the salt concentration on the surface of the evaporator cannot reach the saturation state while sufficient water supply is guaranteed, and the evaporation efficiency is improved. Therefore, the limitation that a traditional plant bionic solar evaporator is unstable and prone to salt deposition in the environment of high-concentration saline water and waste water for a long time is broken through.

The invention discloses an automatic operation siphon filter tank convenient to monitor, and relates to the technical field of siphon filter tanks. The invention aims to solve the problem of insufficient filtered water in the peak period of water use. The water inlet is fixed to the outer wall of one side of the filter body through bolts, the filter grids are arranged in the filter body and are of the same structure, the water outlet well and the control system are fixed to the outer wall of one side of the filter body, and water distribution grooves are formed in the outer walls of the tops of the filter grids; a U-shaped drainage siphon, a U-shaped water inlet siphon, a water inlet tank, a water inlet weir, a water distribution pipe and a filter layer are arranged on the inner wall of each filter cell; a monitoring part is arranged on the inner wall of each filter cell and is in communication connection with the control system; and the monitoring part is provided with a pressure-volume liquid level meter for monitoring the running state of each filter cell. The filter tank is backwashed in the water supply valley period to ensure that all filter tank grids work normally in the water supply peak period, so that sufficient water supply quantity is ensured, and the water supply requirement is met.

An automatic control device for livestock drinking belongs to the field of livestock automation equipment. A water outlet baffle is mounted in a limiting support, a buoy is fixed on the inner wall ofa water tank, an adjusting device is mounted above the buoy, a water inlet pipe is mounted on a first support, and a fishing rack is placed on a storage rack. Clear water flows into the water tank from the upper portion of the water inlet pipe, foam rises along with the water level, a rubber pad rises accordingly, the rubber pad seals the bottom of the water inlet pipe along with contact between the rubber pad and the bottom of the water inlet pipe, and the water inlet pipe stops water incoming; when the water level in the water tank is gradually reduced, a gap is formed between the rubber padand the water inlet pipe, clear water from the water inlet pipe can continuously flow into the water tank, and after the water level reaches the preset water level, the rubber pad seals the water inlet pipe again to finish the process of keeping the water level stable, so that the process of filling water on time by workers is replaced, the labor force is saved, and sufficient water supply is ensured.

The invention provides a device for supplying water to a flushing toilet through selective use of sewage. The device comprises a sewage storage tank, a toilet water storage tank, a pressurized water storage tank, a pumping device and a one-way pressure valve, wherein the sewage storage tank is provided with a first sewage inlet and a first sewage outlet; the pressurized water storage tank is higher than the sewage storage tank and the toilet water storage tank, and the pressurized water storage tank is provided with a second sewage inlet which communicates with the firs sewage outlet and a second sewage outlet which communicates with the toilet water storage tank; the pumping device is arranged between the first sewage outlet and the second sewage inlet; and the one-way pressure valve is arranged between the second sewage outlet and the toilet water storage tank. The device provided by the invention, on the basis of supplying water to the toilet by the sewage, can achieve the selectiveuse of the sewage, and the use of the sewage can be determined in the accordance with the voluntary willing of people, so that environmental awareness is enhanced, and meanwhile, the flexible and individual use of the wastewater (the sewage) is achieved.