104results about How to "Adjust water temperature" patented technology

The invention discloses a tea making machine capable of automatically making tea water with better taste. The tea making machine comprises a water supply unit, a tea making unit, a tea water outlet unit and a control unit, wherein the tea making unit comprises a water container, a water permeable vessel and a cover, and the water permeable vessel is detachably arranged in the water container; the contact unit comprises an intelligent control module, an input module, a storage module and an acousto-optic prompting module, and the input module, the storage module and the acousto-optic prompting module are respectively and electrically connected with the intelligent control module; and the tea making machine also comprises a first temperature control device and a first liquid level sensor which are arranged in the water container and are respectively and electrically connected with the intelligent control module.

The invention discloses a loach fry culture method. A loach larval stage feed culture pond, a larva culture facility pond and a fry culture pond cooperate to finish two-stage culture of loach fries. Primary culture includes that loach seedlings are cultured into loach larvae, culture time is one week, loach fries grow to 1-1.2 centimeters, and the facility pond serves as a culture facility. Secondary culture includes that the larvae are massively cultured into the fries, culture time is four weeks, loaches grow to 4 centimeters or more, and the pond serves as a culture facility. The loach fry culture method solves the problem that current large-scale loach fries cannot be massively produced under the artificial control condition, large-scale loach fries are massively produced, and rapid development of loach industries is facilitated.

The invention relates to a circulation heat recovery heat pump type water heater, which is characterized in that the circulation heat recovery heat pump type water heater comprises a refrigeration loop, a heat flow return passage and a self circulation loop, wherein the refrigeration loop comprises a sealed flow passage formed by a compressor, a condenser, a liquid-liquid heat exchange evaporator and a liquid-gas heat exchange evaporator through being connected sequentially through pipelines, refrigeration working substances are filled in the refrigeration loop, the heat flow return passage comprises an open type flow passage formed by a heat return device, a condenser, a water storage tank, a first water pump and a hot water spraying device through being connected sequentially through pipelines, and also comprises an open type flow passage formed by a waste water collection tank, a second water pump, a heat return device and a liquid-liquid heat exchange evaporator through being connected sequentially through pipelines, hot water sprayed out through the hot water spraying device is discharged into the waste water collection tank after being used, and the self circulation loop comprises a sealed flow passage formed by a condenser, a water storage tank and a first water pump through being connected sequentially through pipelines. The invention can be widely used for bath or heating places such as factories, families, bath centers and the like, and has very large economic and market prospects.

The invention relates to a seaborne movable type deep water cultivation circulating system. The seaborne movable type deep water cultivation circulating system comprises a cultivation water cabin, wherein a conventional water taking pipeline is arranged beside the cultivation water cabin; a deep layer water tanking pipeline is arranged beside the conventional water taking pipeline; the deep layer water taking pipeline is internally provided with a deep layer water taking device; a hoisting machine is arranged on a deck; the deep layer water taking device is hoisted by the hoisting machine and the depth stretching seawater is adjusted; the conventional water taking pipeline is internally provided with a three-directional connection pipe structure with a valve; the three-directional connection pipe structure is communicated with the deep layer water tanking pipeline, the cultivation water cabin and external seawater respectively, and provides circulating power by a circulating water pump; a first temperature sensor is arranged nearby the connection part of the three-directional connection pipe structure and the cultivation water cabin; a second temperature sensor is arranged at the end part of the deep layer water tanking pipeline and is used for detecting seawater temperature; a self-flowing water inlet pipe is arranged at the bottom of the cultivation water cabin; a power water discharging pipeline from bottom to top is arranged at the bottom of the cultivation water cabin; a water discharging and dirt discharging pump is arranged on the power water discharging pipeline; an overflowing water discharging pipeline is arranged on the side wall of the cultivation water cabin.

The invention relates to a cleaning device for cultivating wastewater by employing macroscopic algae as filling material; the cultivating device comprises transparent glass boxes stacking with each other with volume shortened layer by layer from bottom to up, the back of glass box employs sunlight as light source, the top of every glass box is equipped with water inlet pipe and bottom with water outlet pipe, which is the water inlet pipe for the next glass box, the water outlet pipe of the bottom glass box is connected with main water outlet pipe, the top glass box is connected with main water inlet pipe, refrigerating pump and water pump are equipped in the pipeline between the main water outlet pipe and main water inlet pipe. The cultivating wastewater flows into the upper glass box from the main water inlet pipe and contacts with algae completely, the metabolism and photosynthetic oxygenation action of the algae will be carried out thoroughly on the condition of using sunlight as light source and aerated by air pump, which can adsorb large quantity production factors such as C,N and P to enrich the nutriment stock, the wastewater will be cleaned by the algae in the middle and bottom of the glass box, and at the same, the photosynthetic oxygenation action will increase the dissolved oxygen in seawater to improve water quality.

The invention discloses a medical diagnosis and treatment device for obstetrical and gynecological diseases. The device comprises a bed board. A second electric stretchable rod is arranged on the lower surface of the bed board. A suction cup is arranged on the lower surface of the second electric stretchable rod, a headrest is arranged at one end of the upper surface of the bed board, a rubber blanket is arranged on the upper surface of the bed board, a semicircular groove is formed in the other end of the upper surface of the bed board, and the two sides, close to the semicircular groove, ofthe upper surface of the bed board are each provided with a first electric stretchable rod. The medical diagnosis and treatment device is reasonable in structure and low in manufacturing cost; due tothe bed board type design, surgery and gynecologic examination diagnosis and treatment are convenient, a medical box can contain medical instruments, the medical instruments can be disinfected, the working efficiency of medical workers is improved, the water temperature can be adjusted, the device is suitable for patients of different physiques, the water pressure at a water jet can be adjusted, the patients can be more conveniently cleaned and examined, and the device is suitable for being used and popularized.

The invention provides a square intelligent shower panel and belongs to the field of sanitary and bathroom equipment. The square intelligent shower panel comprises a vertical shower body, wherein the upper end of the shower body is connected with a horizontal top shower nozzle; spray holes which are distributed into a rectangular array are formed at the lower end of the top shower nozzle; the lateral side of the shower body is connected with a handheld shower head through a hose; the front end of the shower body is provided with a screen display operation panel, and the rear end of the shower body is provided with a PID controller and a water distribution electromagnetic valve; the lower end of the shower body is provided with a lower water outlet tap. The invention provides the square intelligent shower panel. According to the square intelligent shower panel, water temperature, flow level, water outlet ways and work conditions can be intuitively displayed by the screen display operation panel; the work conditions, the water outlet ways, and the adjustment of water temperature and flow level and the like can be conveniently controlled by the operation panel.

The present invention discloses a new-type crob pond structure mode for breeding button crab. Said crab-breeding pond is formed from five portions of pond ridge, fixing feed-adding area, breeding channel, aquatic plant and plastic barrel, in which the breeding channel is an inverted trapezoidal shallow pond whose upper surface width is 1.00-1.20 m, bottom width is 0.4-0.5 m and depth is less than0.5m between pond ridge and breeding channel there is a platform whose width is about 1m as feed-adding area, in the feed-adding area the plastic barrels for trapping carb are placed and the aquatic plant can be planted on the pond surface outside of breeding channel. As compared with general crab pond is can improve ecological environment of crab pond and water quality and is favorable for growth and development of button crab.

The invention discloses a control method of an engine temperature control module. The control method comprises the steps that a whole vehicle is powered on, a system is initialized, whether a water temperature sensor and the temperature control module are normal or not is checked, and if the water temperature sensor and the temperature control module are normal, the temperature control module enters a working mode; the temperature control module enters the working mode, the current water temperature is started to be confirmed, if the current water temperature is lower than a preset warming-upthreshold value, the temperature control module enters a rapid warming-up mode, and otherwise, the temperature control module enters a normal working mode; in the normal working mode of the temperature control module, the optimal water temperature and the safe water temperature are obtained in a look-up table manner according to the engine load and the rotating speed; whether the current windwardcondition is enough or not is determined according to the current vehicle speed, and the target water temperature is determined by utilizing the optimal water temperature or the safe water temperatureby referring to the current windward condition; and ball valve corner control is conducted according to the target water temperature. According to the control method, active flow adjustment can be achieved, the whole vehicle risk and branch function requirements are considered at the same time, the water temperature of the whole vehicle can be optimized through the method under any working condition, and accurate heat management is achieved.

The invention discloses a circulating water breeding treatment system which comprises a fish tank fan, an oxygenerator, an ozone generator and an equipment fan. One side of the fish tank fan is communicated with a breeding tank through a pipeline, one side of the breeding tank is communicated with a rotational flow filter through a pipeline, one side of the rotational flow filter is communicated with a roller microfilter through a pipeline, and one side of the roller microfilter is communicated with a balance tank through a pipeline. Through matched using of an ultraviolet sterilizer, the rotational flow filter, a constant temperature machine, the oxygenerator, a dissolved oxygen cone, the roller microfilter, a dissolved oxygen pump, the balance tank, a degassing pump, a circulating pump,a protein separator, the ozone generator, the equipment fan, a biofilter and a degassing sterilization treater, the problem that existing circulating water breeding systems are inconvenient in breeding, wide in occupied area, troublesome in operation step, prone to being affected and constrained by natural environment like weather and water quality change and inconvenient for breeding management is solved.

The invention relates to a multifunctional shockproof thermos cup. The multifunctional shockproof thermos cup comprises a cup lid, a plastic casing and a base, wherein the plastic casing is internally provided with a liner; a shockproof thermal insulation layer is arranged between the liner and the plastic casing; the base is internally provided with a temperature sensing device; a temperature liquid crystal display screen is arranged at the front part of the plastic casing, is in a battery shape and is provided with a plurality of display blocks for displaying water temperature; a temperature display and adjustment device is arranged on the outer side of the plastic casing or the base; a heating device is arranged on the base; the temperature display and adjustment device comprises a digital temperature display screen, a temperature adjustment knob, a heating indication lamp and a heat preservation indication lamp; the heating device is an electric jack and / or a USB (universal serial bus) socket; a music player is arranged on the base; and a handle matched with the cup lid is arranged on the outer side of the cup lid. The thermos cup is scientific in design and convenient to use, has shockproof and heat preservation functions, facilitates heating, timely observation and water temperature adjustment, and has higher practical application and popularization values.

The invention discloses an engine cooling fan control system. The control system involves a silicone oil fan, a power system, a fan sensor and a controller; the power system involves a power distributor, an engine and a motor, wherein the engine and the motor are connected with the power distributor; the fan sensor is used for detecting the rotation speed of the silicone oil fan; and the controller is connected with the power system and the fan sensor, and meanwhile, the controller is used for distributing power of the engine to the motor by controlling the power distributor when the rotationspeed of the silicone oil fan is lower than a threshold value, driving the silicone oil fan through the motor so as to improve the rotation speed of the silicone oil fan, and controlling the engine todrive the silicone oil fan to speed down by controlling the power distributor when the rotation speed of the silicone oil fan is higher than the threshold value. The engine cooling fan control systemcan improve the rotation speed of the silicone oil fan and improve the response speed of the silicone oil fan through the motor under the condition that the rotation speed of the silicone oil fan islower than the threshold value.

The invention belongs to the field of household appliances, and particularly relates to a water heater control method and system. The method includes the steps of receiving a signal for hot water using, obtaining the temperature value of water in a hot water outlet pipe through a temperature detection element, judging whether the temperature value is smaller than a preset temperature threshold value or not, sending the water in the hot water outlet pipe back to a water tank if the temperature value is smaller than the preset temperature threshold value, and supplying the water in the hot water outlet pipe to users for use if the temperature value is not smaller than the preset temperature threshold value. According to the water heater control method and system, after the signal for hot water using is received, the temperature value of the water in the hot water outlet pipe is obtained, and the obtained temperature value is compared with the preset temperature threshold value to decide whether to open a water pump of a water return system or not, so that the temperature of the water flowing out of the hot water outlet pipe and the temperature of hot water in the upper portion of the water tank are made to be the same; the users can conveniently adjust the temperature of water, and the temperature of water is prevented from being suddenly high and suddenly low; meanwhile, the water using comfort of the users is improved, and the aims of saving energy and water are achieved.

The invention discloses a multifunctional bathtub with an automatic water temperature adjustment function. The bathtub includes a bathtub body, a faucet, anti-skid armrests, a bath pillow and a control panel; a control switch and the control panel are arranged on the surface of the bathtub body, the bath pillow, the faucet and an object placing plate are arranged on the bathtub body, the faucet isarranged on a deck plate of the bathtub body, a water inlet pipe is connected in the faucet, and the inner wall of the bathtub body is symmetrically provided with the anti-skid armrests and spillwayholes; massage balls are installed on the portion, at the lower portion of the bath pillow, of the bathtub body, an arc structure is arranged in a bath area of the bathtub body, temperature sensors are arranged at an arc panel, and the bottom of the bathtub body is provided with a gravity sensor, anti-skid patterns and a drainage port. The control panel is connected with the gravity sensor, the temperature sensors, a heating device, a water level controller, a water valve control device and a driving device. The bathtub is novel and reasonable in structure, simple and convenient to operate, and capable of meeting the demand of people for automatic water temperature adjustment when people take a bath for a long time.

The invention discloses a fast cool cup, comprising a cup body. The cup body comprises a cup and a cup mouth part. The cup comprises an inner container and an outer container. A space formed between the inner container and the outer container is an interlayer. A heat exchange substance is in the interlayer. Heat exchange of the heat exchange substance can be divided into a fast cool stage and a slow cold stage. The bottom end of the interlayer is provided with a thermal insulation device and a valve. The fast cool cup is simple in structure, and has effect of cooling hot water rapidly, and when water temperature is reduced to a water temperature range that is suitable for users to drink, the cup has slow cooling effect. An anti-scald heat insulation sleeve on the outer wall of a housing effectively prevent hands from being burnt and has heat insulation effect. Since the inner container and the valve are integrated, a user can rotate or lift the inner container to adjust the heat exchange substance in the interlayer to absorb heat or release heat, so as to regulate water temperature in the inner container.

The invention relates to the technical field of environment-friendly equipment, in particular to a high-temperature sterilization box for sewage treatment. Through multi-stage sterilization on sewage,the content of bacteria in the sewage is effectively reduced, the sterilization effect is improved, and the sewage treatment effect is improved. The high-temperature sterilization box comprises a boxbody, a support frame, a first support plate, a first motor, a first suction pump, a first water pipe, a second water pipe, a second support plate, a second motor, a second suction pump, an ozone generator, a first gas pipe and a second gas pipe; a first cavity is arranged in the box body; the bottom end of the box body is connected with the top end of the support frame; the upper side of the left end of the box body is connected with the right end of the first support plate; the front side of the top end of the first support plate is connected with the bottom end of the first motor; a firsttransmission shaft is arranged at the rear end of the first motor; the rear end of the first transmission shaft is connected with the front end of the first suction pump; and the left end of the firstsuction pump communicates with an outlet end at the right side of the first water pipe.

The invention discloses a temperature-adjusting cup which comprises a cup body and is characterized in that a hollow interlayer filled with sodium acetate supersaturated solution is arranged inside the cup body; an activated metal sheet extends out from the hollow interlayer. The temperature-adjusting cup can automatically adjust the water inside the cup to raise or reduce temperature to enable the water inside to keep the temperature within a certain range, thus having the function of adjusting the temperature of the water inside.

The invention discloses an efficient ecological fish-shrimp-crab polyculture method. The polyculture method includes the steps of (1) selection and cleaning of a pond; (2) construction of anti-escape facilities; (3) preparation before stocking; (4) fry stocking; (5) feed feeding; (6) prevention and control of diseases and insect pests; (7) water quality regulation; (8) fish-shrimp-crab harvest. The efficient ecological fish-shrimp-crab polyculture method has the advantages of environmental protection, high reliability, good quality and high economic benefits, and has a wide market prospect in the application and popularization of aquaculture.

The invention discloses a moving environment-friendly type exterior-interior aerator which comprises a carrier, an aeration mechanism, an axis rotation assembly and a telescopic traction rod, wherein the carrier comprises two buoys, a hoop and a steel tube belt fastener; the aeration mechanism is mounted between the two buoys through a support rod, and comprises a host machine, a motor mounted above the host machine through a support rod, an oxygen-accumulating covering cylinder mounted outside the motor and air-collecting pipes mounted at the inner sides of the two buoys; an exhaust pipe communicated with the host machine is arranged at the bottom of the oxygen-accumulating covering cylinder; the axis rotation assembly is fixed on a foundation pile in the center of a water body through an assembly base arranged at the bottom of the axis rotation assembly; two ends of the telescopic traction rod are connected with the carrier respectively through an L shaft assembly and the axis rotation assembly; and cables connected with the axis rotation assembly and the carrier are arranged on the telescopic traction rod. The aerator disclosed by the invention is applicable to oxygenation of fish ponds with different water depths, can realize oxygenation and fertilization, can improve water quality, and can be used for treating sewage and industrial waster water.

The invention provides a cold and hot water ready-to-drink type purified water dispenser, and belongs to the technical field of purified water machines. The cold and hot water ready-to-drink type purified water dispenser comprises a water purifying device, a sterilizer, a filter element module, a booster pump and a pure water tank are arranged from bottom to top on the water purifying device, and a tap water pipe is connected to the lower end of the water purifying device; a water discharging end of the filter element module is provided with a water quality sensor; the lower end of the pure water tank is connected to the upper end of a water drinking control device through a purified water pipe, wherein the water drinking control device comprises a mixed cavity, the purified water pipe is divided into a cold water pipe and a hot water pipe after entering the water drinking control device, the hot water pipe is provided with a flow sensor and an electric heating device, and the cold water pipe and the hot water pipe are connected to the upper end of the mixed cavity through electromagnetic valves; a temperature sensor is arranged inside the mixed cavity, a backflow pipe is arranged at the bottom of the mixed cavity, and a water drinking head is arranged at the lower end of the side wall of the mixed cavity; the backflow pipe is connected to the booster pump; the surface of the water drinking control device is provided with a touch control display screen and a warning device; liquid level sensors are arranged in the pure water tank and the mixed cavity; the electromagnetic valves are arranged on the tap water pipe and the backflow pipe. According to the cold and hot water ready-to-drink type purified water dispenser, a ready-to-drink purpose of purified cold and hot water is achieved, and great convenience is brought to everyday water drinking of people.

The invention provides a crab breeding method. The crab breeding method comprises the following steps: selecting a pond; paving escaping-preventive tempered glass at four sides of the pond; cleaning the pond with 150kg quick lime per mu by a dry manner; pouring water eight days after the cleaning until reaching depth of 0.2 to 0.8m; applying base fertilizer to improve the water quality; charging juvenile crab in the first third of April; feeding bait in the morning and at night every day, wherein the amount of the bait fed each time is 6 to 8% of the weight of the crab, and 60 to 80 juvenile crabs per gram, amounting to 180,000 to 200,000 juvenile crabs, are charged per mu; the bait comprises the following materials in parts by weight: 50 to 60 parts of small fish, 40 to 50 parts of pumpkin, 20 to 40 parts of potato, and 20 to 30 parts of wheat; inspecting the pond each day; removing batrachia, serpentes and rats entering the pond; pouring fresh water once every week, wherein the fresh water is poured in the pond until reaching 1.1 to 1.3m in the summer; catching in October. The crab breeding method is high in output and small in cost.

The invention relates to an electromagnetic directly-heated water heater, comprising a water receiver and an insulating coil panel, wherein the water receiver is provided with a cooling water inlet and a hot water outlet and is made of metal, the insulating coil panel is provided with a magnet exciting coil in an inner coil panel, the magnet exciting coil of the insulating coil panel is faced with and close to the water receiver; the magnet exciting coil is connected with a control circuit, the control circuit comprises a power supply unit and a converter circuit used for generating high frequency current. The invention has the advantages that the water receiver is used for directly inducing a magnetic field to generate whirlpool to produce heat, the heat loss is small, heating speed is fairly rapid, immediate heating can be achieved and use is very safe in that water is separated from electricity; in addition, the metal water receiver (a stainless steel water receiver in particular) features full absorption of the magnetic field and good shielding effect, therefore, the water heater of the invention can save electric energy greatly.

The invention relates to an anti-solidification constant temperature system for corn oil. The anti-solidification constant temperature system comprises an oil storage tank and a constant temperature control device. The constant temperature control device comprises a heat supply module and a constant temperature module; the constant-temperature module comprises a constant-temperature barrel; the constant-temperature barrel sleeves the oil storage tank, and a liquid storage space is formed between the constant-temperature barrel and the oil storage tank; the heat supply module comprises a hot water tank and a water delivery system; hot water in the hot water tank is conveyed into the liquid storage space through the water delivery system along a water inlet of the constant-temperature barrel; and the hot water tank comprises a low-temperature water tank, a transition water tank and a high-temperature water tank which are separated through partition plates. The hot water tank is providedwith a heating unit used for controlling water temperatures in the low-temperature water tank, the transition water tank and the high-temperature water tank according to outdoor temperature changes. The anti-solidification constant-temperature system for the corn oil is good in anti-solidification effect, does not influence product quality of the corn oil and is wide in application range.

The invention discloses a cooling system, particularly discloses a cooling system for mass concrete, and belongs to the technical field of design and manufacture of building construction technological equipment. The invention provides a cooling system for mass concrete, which can effectively control the temperature of the mass concrete during casting and condensing. The cooling system comprises a refrigerant storage device, a refrigerant conveying and regulating mechanism and a heat exchanging structure, wherein a cooling refrigerant is stored in the refrigerant storage device; the heat exchanging structure is distributed in the mass concrete required to be cooled; the cooling refrigerant stored in the refrigerant storage device is circulated between the heat exchanging structure and the refrigerant storage device through the refrigerant conveying and regulating mechanism.

The invention relates to a water boiling machine capable of adjusting the water temperature. The water boiling machine comprises a shell and an electric control device used for controlling components.A water tank, a first water pump, a heat exchanger, a second water pump, a heater and a water outlet faucet are arranged in the shell, the two ends of the first water pump are connected with the water tank and a cold water inlet of the heat exchanger through pipelines correspondingly, a cold water outlet of the heat exchanger is connected with a water inlet of the heater through a pipeline, two water drainage pipelines are arranged at the water outlet position of the heater, the two water drainage pipelines are connected with a hot water inlet of the heat exchanger and the water outlet faucetcorrespondingly, and the second water pump is arranged between a hot water outlet of the heat exchanger and the water outlet faucet. According to the designed water boiling machine, the number of thecomponents is small, the overall structure is simple, the heat efficiency is high, energy conservation and high efficiency are achieved, generated water is boiled and sterilized, and the water boiling machine is safe, reliable, capable of adjusting temperature, convenient and fast to operate, reasonable in design and suitable for large-scale popularization.

The invention belongs to the technical field of plant growth regulating equipment and discloses a seed soaking device. The seed soaking device comprising a frame and a seed soaking box is characterized in that a cover plate, a feeding inlet and a discharge port are disposed on the seek soaking box; a rotating shaft and a motor are arranged on the frame; two sets of mixing blades and a rotating rodare disposed on the rotating shaft; a drive ring is arranged on the inner wall of the seed soaking box; a rotating wheel and stirring rod are arranged on the rotating rod; the side wall of the seed soaking box is hollow, and an air inlet and an air outlet are disposed on the side wall of the seed soaking box; a baffle provided with a hot air outlet and a cold air outlet is mounted on the side wall of the seed soaking box; a vortex tube is further provided; a sliding slot internally provided with a slide block and injected with nitrogen is disposed on the bottom of the rotating shaft; a movingrod with the bottom end hinged with a support rod is arranged on the bottom of the slide block; the support rod is hinged on the frame; one end, far from the moving rod, of the support rod is hingedon the bottom end of the baffle. The seed soaking device has the advantage of solving the problem that water in a soaking box body of the prior art cannot be fully mixed with medicine, which results in poor soaking effect.

The invention discloses a fog cooling ring suspension type continuous casting machine crystallizer. The continuous casting machine crystallizer comprises a crystallizer body; the crystallizer body comprises an upper crystallization channel opening and a lower crystallization channel opening; the crystallizer body is provided with a horizontal upper opening cooling channel and a horizontal lower opening cooling channel; the horizontal upper opening cooling channel and the horizontal lower opening cooling channel are communicated through a plurality of vertical cooling channels; a suspension fog cooling ring is further included and is an annular pipe fitting; a secondary water inlet pipe is arranged on the outer side of the suspension fog cooling ring, and a plurality of cooling nozzles are formed in the inner side of the suspension fog cooling ring; and the suspension fog cooling ring is arranged at the bottom of the crystallizer body and is connected with the crystallizer body through a mounting lifting plate, The water spraying height of second-time cooling is adjusted, and therefore the crystallizer is suitable for meeting the requirements of different materials for the continuous casting secondary cooling technology, and the casting quality of a casting is improved.

The invention discloses an anti-freezing cultivation system, comprising a pond. The outer side of the pond is provided with a pond water heat exchanging system. The middle part of the pond is provided with a feeding salvage ship. The feeding salvage ship comprises a ship body. The rear end of the ship body is provided with a feeding device. The feeding device comprises a mounting plate. The mounting plate is provided with an ejection device. A storage vat is internally provided with a material pushing plate mechanism which makes materials smoothly enter a discharging port. The front end of the ship body is provided with a salvage mechanism which salvages suspended objects of the pond. The ship body is provided with a driving mechanism which can drive the ship body to travel. An objective of the system is to overcome defects in the prior art, and the anti-freezing cultivation system which is simple in structure, adjusts water temperature of pond water, makes aquatic products safely overwinter, and is good in cultivation effect, good in bait dispersibility in feeding, wide in feeding range, and can salvage the suspended objects in the pond.

The invention discloses a sand blasting tooth cleaning system, which at least comprises a tooth chair; a host; a foot switch; a powder bottle; a sand blasting handle; a suction device; the suction equipment comprises a suction device and a suction filtering device; the air inlet end of the powder bottle is communicated with the air path system, the air outlet end of the powder bottle is communicated with an air path channel in the sand blasting handle, and sand blasting powder in the powder bottle can be brought out by air in the air path system and conveyed into the sand blasting handle under the control of the foot switch; the gas path system comprises a pressure reducing valve, a gas-water separation device and an electromagnetic valve. The invention further discloses a sand blasting tooth cleaning method which comprises the stages of preparation, starting, tooth cleaning, suction, ending and the like. The sand blasting tooth cleaning system is provided with the gas-water separation device, so that the anti-blocking performance is greatly improved; and suction equipment is matched, so that splashes generated in the tooth cleaning process can be timely and effectively sucked. The sand blasting tooth cleaning method has a good tooth cleaning effect; in addition, splash can be timely and effectively sucked in the tooth cleaning process, so that the working environment is kept clean and sanitary.

The invention discloses a crayfish breeding, hatching and collecting device. The device comprises a culture pond, a circulating water tank and a sewage tank, the outer side of a bottom plate of the culture pond is arranged in the circulating water tank through supporting legs, the sewage tank is arranged on one side of the circulating water tank, a circulating water pump is arranged on the other side of the circulating water tank, one end of the circulating water pump is in communication with the culture pond through a circulating water inlet pipe, and the other end of the circulating water pump is in communication with the circulating water tank through the circulating water inlet pipe. According to the crayfish breeding, hatching and collecting device, a cleaning brush is used for cleaning the bottom of the culture pond, residues of impurities at the bottom of the culture pond are reduced, and the culture pond is convenient to clean; meanwhile, a sewage outlet valve is opened, impurities flow out from a sewage outlet pipe and enter the sewage tank, the circulating water pump can enable water in the culture pond and the circulating water tank to circulate, the activity of the water is kept, and therefore, the activity of juvenile crayfish is improved; and the crayfish breeding, hatching and collecting device is reasonable in structure, convenient to use and suitable for popularization and application.