953results about How to "Prevent frostbite" patented technology

A firearm grip with a rest is provided, which at least has a grip body with a hollow portion, a shell encasing and combined with an outside of the grip body and exposing a bottom of the grip body, and a rest received in the grip body and capable of being projected from the bottom of the grip body to position and support the firearm grip against a setting surface. The grip body and the rest can be coupled to each other by an elastic member that allows the rest to be resiliently retracted back into the grip body. Alternatively, the rest can be pivotally coupled to the grip body and rotatably retracted into the grip body. The above firearm grip eliminates the shortcomings of the prior art.

The invention discloses a grape planting technique. The technique includes that before planting grape seedings, soil and grape roots are differently treated respectively, in other words, straw is laid on the soil, germicidal constituents like quicklime, paulownia sawdust, castor bean leaf powder and distillers' grains are scattered on the soil, the soil is covered by films after deep tillage and exposed to highlight, and harmful bacteria in the soil can be effectively killed, so that a good environment is provided for grape growing; the straw play a certain role in heat insulation, so that the grape roots can be prevented from cold injury in winter; the roots are dipped in slurry prepared by nitrogen-phosphorus-potassium mixed fertilizer, calcium superphosphate, urea, attapulgite, polyacrylamide, bamboo vinegar, sea mud and the like and then coated by a layer of plant ash, and the slurry has characteristics of slow releasing of the fertilizer and water retention, so that the number of fertilizing and watering can be effectively reduced, and grape planting cost can be reduced; after planting, straw powder and vermiculite are applied at the roots, soil can be improved, loss of the slurry coated at the grape roots can be prevented, and utilization rate of the fertilizer can be increased. According to the technique, safe and environment-friendly biological prevention and control methods are adopted for preventing and controlling plant diseases and insect pests, so that the plant diseases and insect pests are greatly reduced and safety and freeness of pollution are realized.

The invention provides a tunnel anti-freezing dehumidification system, and belongs to the technical field of tunnel engineering. The tunnel anti-freezing dehumidification system solves the problems that an existing tunnel is low in temperature and high in humidity. The tunnel anti-freezing dehumidification system comprises a plurality of solar heat collection pipelines and a plurality of electric heating pipes I, wherein the solar heat collection pipelines are arranged at a tunnel portal, the electric heating pipes I are arranged inside a tunnel, one end of each solar heat collection pipeline is a closed end, and the other end of each solar heat collection pipeline is connected with a heating pipeline; electric heating pipes II are further arranged in the solar heat collection pipelines and connected with a storage battery pack II; the electric heating pipes I are evenly arranged on the two side walls inside the tunnel and connected with a storage battery pack I; a solar cell panel and a windmill set are also arranged at the tunnel portal, wherein the solar cell panel is connected with the storage battery pack I, and the windmill set is connected with the storage battery pack II. The tunnel anti-freezing dehumidification system can heat the tunnel so as to prevent rails from freeze injury and can dehumidify the tunnel so as to prevent the rails from rotting at the same time.

The invention relates to a pollution-free grape planting method, comprising the steps of before field planting of a grape seedling, performing different treatments on soil and a grape seedling root; paving straws on the soil, then scattering quick lime, paulownia saw dust, castor leaf powder, vinasse and other sterilization components, deeply tilling the oil and laminating a film for hard light irradiation, so germs in the soil can be effectively killed, and a well environment is provided for grape growth; dipping the root with mud prepared from nitrogen, phosphorous and potassium compound fertilizer, calcium superphosphate, urea, attapulgite, polyacrylamide, bamboo vinegar and sea mud, and then coating a layer of plant ash, wherein the mud contains the slow-release fertilizers, and water retention, so fertilizing and watering times can be effectively reduced, and the grape planting cost is reduced; after field planting, applying straw powder and vermiculite to the root, thus improving the soil, preventing the loss of the mud coated to the root of the grape and improving the use rate of the fertilizers. The pollution-free grape planting method has the beneficial effect that a safe and environment-friendly prevention and control method is adopted for preventing and controlling diseases and insect pests.

The invention relates to the technical field of agriculture and specifically relates to a mulching film and a preparation method thereof. The mulching film comprises two black mulching films and a white mulching film which is arranged between the two black mulching films and connected with the two black mulching films, wherein the black mulching films are prepared from the following raw material components in parts by weight: 40-46 parts of degradation master batches, 25-30 parts of linear low-density polyethylene, 25-30 parts of carbon black master batches; the white mulching film is prepared from the following material components in parts by weight: 40-46 parts of degradation master batches and 54-60 parts of linear low-density polyethylene. The mulching film provided by the invention has warming and moisture-preserving effects and better wedding effect, can be applied to the agriculture very well, and is more beneficial to health of crops.

The invention provides a heating machine and an automatic anti-freezing control method thereof. The automatic anti-freezing control method of the heating machine comprises the steps that an outdoor environment temperature Thj, a water outlet temperature Tch, a water inlet temperature Tjs and an anti-freezing temperature Tfd are detected in real time; when a compressor (1) does not operated, the relation between Thj and T1 is detected; if Thj is less than T1, the relation between Tch, Tjs, Tfd and T2 is detected; and when Tch is less than T2 or Tjs is less than T2 or Tfd is less than T2, the heating machine is controlled to enter an automatic anti-freezing control mode. According to the automatic anti-freezing control method of the heating machine, the problem of unit water pump frost damaging or pipeline frost cracking can be effectively avoided, and effective protection is formed on the heating machine.

The invention provides a heat pump hot water machine system and a control method thereof. The heat pump hot water machine system comprises a heat exchanger, a heat preservation water tank, a water outlet pipe, a temperature detector, a first switch, a second switch and a controller, wherein the heat exchanger and the heat preservation water tank are connected through water circulation pipes; the water outlet pipe is connected with the water circulation pipes; the temperature detector is used for detecting an outdoor environmental temperature in real time; the first switch and the second switch are connected on the water outlet pipe in series, wherein the second switch is kept at a normal close status when the heat pump hot water machine system is alive and at a normal opening status when the heat pump hot water machine system is dead; the controller is connected with the first switch and controls the first switch to open when the outdoor environmental temperature is lower than a preset temperature so as to discharge water in the heat exchanger, the heat preservation water tank and the water circulation pipes when the heat pump hot water machine system is dead. According to the heat pump hot water machine system and the control method thereof, water drainage can be conducted automatically to prevent the system from being frozen off, and water resource waste can be reduced.

This invention discloses a method for producing rise-fall artificial plant floating bed for wastewater biological treatment. The main body of the floating bed is hollow and sealed, and a planting groove is set on the main body. Filler and plants are placed in the planting groove. A support is set in the planting groove, which is connected with water body. Bed connectors are placed surrounding the main body of the floating bed. At least two main bodies are combined to form the floating bed, which is placed on the water surface. The roots of the plants on the floating bed can realize filtration, absorption and adsorption of pollutive substances in wastewater. The floating bed is sinked into the non-frozen layer below water surface in winter, and taken out of water surface inspring. The plants are left for further filtration, absorption and adsorption of pollutive substances in wastewater. This invention has such advantages as short project period, and rapid acting. Plants of the floating bed have a survival period of more than 8 months/year. The planting can match city landscape, thus are good for city afforestation, and can reduce secondary assembly cost. The floating bed just needs replanting in spring.

The invention discloses a heat storage, heat-release, dehumidification, ventilation and sterilization type solar greenhouse regulating and controlling system, and belongs to the technical field of agricultural facilities. The system has four functions of heat storage and release, dehumidification, ventilation and sterilization. After a water pump is used for making water in a water tank to absorb heat reflected from a light condensation plate to a heat collecting pipe, the heat is transferred to water in the water tank and a coil pipe, and heat storage is achieved; when the temperature in a greenhouse is low, the water pump is used for making heat of the water in the water tank released to the greenhouse through a water pipe and a radiator to improve the temperature in the greenhouse, and heat release is achieved; a compressor is used for refrigeration, and wet air in the greenhouse is dehumidified through a fan and an evaporator, heated in a condenser, then heated to the required temperature through an electrical heater and finally sent into the greenhouse through an air pipe, and therefore dehumidification is achieved; ventilation is achieved though vent holes inside and outside the greenhouse under the action of a fan and an adjusting air valve; sterilization is achieved through ultraviolet sterilizing lamps during dehumidification or ventilation. The system can improve the utilization rate of solar energy and enhance the regulating and controlling ability of the thermal and humidity environment of the greenhouse.

The invention discloses an air source hot water machine system and a control method thereof. The air source hot water machine system comprises a condenser, a four-way valve, a shell and tube heat exchanger, an electronic expansion valve, an inverter compressor, an outdoor fan, a water mixer, a first electronic flow valve, a second electronic flow valve, a controller, a first temperature sensor, a second temperature sensor and a third temperature sensor. One end of the first electronic flow valve is connected with a water outlet pipe of the condenser, and the other end of the first electronic flow valve is connected with the water mixer. One end of the second electronic flow valve is connected with a tap water pipe, and the other end of the second electronic flow valve is connected with the water mixer. The controller is used for controlling the inverter compressor and the outdoor fan according to the temperature detected by the first temperature sensor, so that the inverter compressor operates according to a preset frequency corresponding to the current environment temperature, and the outdoor fan operates according to a preset rotation speed corresponding to the current environment temperature. The controller is further used for controlling the open degree of the first electronic flow valve and the open degree of the second electronic flow valve according to the temperature detected by the second temperature sensor and the temperature detected by the third temperature sensor.

The invention discloses nutritional nourishing hand cream and a preparation method thereof. The hand cream comprises the following components: shea butter, horse oil, wheat germ oil, rose infused oil, snow lotus herb infused oil, myosotis infused oil, universal self-emulsified composite emulsifier, AC-402, 25% triethanolamine, bletilla extract, green tea extract, actinidia chinensis extracted juice, pyracantha fortuneana fruit extracted juice, 1,2-propylene glycol, biological polysaccharide gum, a 20% urea solution, Liponic EG-1, trehalose, nicotinamide, honey, vitamin E, sodium alginate, hydroxypropyl methyl cellulose, a 1% ethylenediamine tetraacetic acid disodium salt solution, a 10% citric acid solution, a 5% ethylparaben solution, distilled water and essence. Compared with the prior art, the hand cream has the advantages of providing rich nutrition to hand skin, deep nourishing dry and rough hands, regulating balance of moisture and oil, softening waste cutin, flattening fine lines, supplying moisture to hands and increasing effects of moistening and whitening.

The invention discloses a refrigerator which comprises a box body, a semiconductor module, an evaporator and a second flue; the box body defines at least one refrigerating room; one side of the at least one refrigerating room is equipped with a first flue which is in fluidic communication with the refrigerating room; the semiconductor module is arranged in the box body and is used for providing cooling capacity to at the least one refrigerating room; the semiconductor module is provided with a cold end and a hot end; the cold end is positioned in the first flue; the evaporator is arranged in an evaporator cavity of the box body, so that the hot end can be cooled; the second flue is independently arranged relative to the first flue; the hot end is positioned in the second flue; the second flue comprises an air inlet path and an air return path; and cold air flows to the hot end from the evaporator through the air inlet path, and is then returned into the evaporator through the air return path. The refrigerator provided by the invention is relatively low in cost, and the refrigerating room can realize a constant-temperature constant-humidity (high-humidity) function.

The invention discloses a car-mounted liquid nitrogen spraying and refrigerating system which comprises a compartment and a liquid nitrogen storage tank. A liquid nitrogen atomizing and spraying mechanism is arranged in the compartment and connected with the liquid nitrogen storage tank through a pipeline, and a human body induction mechanism is further arranged in the compartment and connected to a single-chip microcomputer. The car-mounted liquid nitrogen spraying and refrigerating system has the advantages that a liquid nitrogen atomizing and spraying pipeline connected with the liquid nitrogen storage tank is arranged at the top of the compartment, it is guaranteed that liquid nitrogen is fully atomized and absorbs heat to form nitrogen, and it is avoided that liquid nitrogen drops drop onto a product, and consequently the product is freeze-damaged. The personnel recognition device is arranged in the compartment, it is guaranteed that atomizing and spraying are carried out under the condition that no person exists, and casualty accidents caused by misoperation are effectively eradicated.

The invention relates to a purple heart pitaya planting and a cultivating method. The method comprises the steps that 1, seeding stage management: at the early stage of characterization , one time of watering is conducted every 2 to 3 days, and timely drainage is conducted in rainy season; 2, at the initial planting period, emergency crops can be interplanted in a new orchard. Sod culture is adopted to the cultivating management once the pediciel of the pitaya climbs to the top of a pillar. Ridge plowing and root covering are conducted according to the root baring situation after raining, and ridge plowing to protect seeding is conducted in winter in the new orchard; 3, scientific fertilizer and water index; 4, pruning; 5, flower and fruit thinning and fruit bagging; 6, pest control: priority is given to the agricultural, physical and biological control, and chemical control is supplemented; 7, reaping and marketing timely. According to the purple heart pitaya planting and cultivating method, three-dimensional management is adopted into the planting of the purple heart pitaya, the production management is convenient, the taste of the purple heart pitaya is good, and the yield is high.

The invention discloses an inductive fishing rod. The inductive fishing rod comprises a rod body, a fishing line and a fish hook, wherein the rod body is connected with one end of the fishing line; the other end of the fishing line is connected with the fish hook; a heating sleeve encircles the head of the rod body; an electric heating patch is adhered between the heating sleeve and the rod body and is connected with a detachable battery which is arranged at the hollow inner part of the rod body; a PCB (Printed Circuit Board) device is arranged above the rod body in the vertical direction and is connected with a vibration sensor and a tension sensor which are arranged on the fishing line and the fish hook through circuits. With the inductive fishing rod, a fisherman does not need to concentrate on observation and judgment of the bite situation through a float all the time, so that the eyestrain of the fisherman is avoided; by the arrangement of an alarm, the fisherman can have a rest and can effortlessly determine a bite only by hearing a voice prompt tone. By additionally mounting the heating sleeve at the bottom of the fishing rod, the exposed hands of the fisherman can be kept warm in a cold season and are prevented from cold injury.

The invention discloses a low-temperature micro-abrasive-material air jet flow processing machine tool. The low-temperature micro-abrasive-material air jet flow processing machine tool is characterized in that the machine tool comprises a micro-abrasive-material air jet flow generating part, a cooling part, a processing part, an abrasive material recycling part and a controller part; the micro-abrasive-material air jet flow generating part mainly comprises an air compressor (1), an air drier (2), a gas storage tank (3) and a sand-blasting machine (14); an air outlet of the air compressor (1) is connected with an air inlet of the air drier (2); an air outlet of the air drier (2) is connected with a gas inlet end of the gas storage tank (3); and a gas outlet end of the gas storage tank (3) is connected with the sand-blasting machine (14). The low-temperature micro-abrasive-material air jet flow processing machine tool is simple in structure and suitable for processing plastic materials such as a high polymer material; the processing efficiency is high; and the problems that when low-temperature processing is conducted, moisture in air is liquefied and iced to block a jet flow nozzle(10), and abrasive materials cannot be recycled easily to cause pollution are solved.

A heat pipe which can prevent frost damage of the pipe body due to freezing of the typical working fluid in cold climates by encapsulating an aqueous solution containing about 0.5 to about 10 wt % glycols as a working fluid, and which has a working performance almost comparable to that of the heat pipe in which water is used as the working fluid.

The invention belongs to field of agricultural cultivation techniques, and relates to a cultivation method for crops, in particular to a furrow, film, ridge and straw combined type mulching cultivation method for the crops. The method includes the steps of farmland selection, soil preparation, ditching, ridging, basal dressing, intercropping of plants among ridge surfaces according to specification layout, ridge surface straw mulching and furrow body film mulching after crop seeding, top dressing in the seedling stage and the fast-growing stage of the plants, and recovery of mulching film after harvest. The method overcomes shortcomings of straw mulching and film mulching, achieves sustainable production of the crops, reduces waste of agricultural resources and environmental pollution, improves rainfall infiltration, restrains soil evaporation, improves hydrothermal conditions of soil, improves the nutrient status of the plants due to nutrients provided by straw, protects cultivated land, prevents loss of water and fertilizer on the surface of the soil, improves yields of the crops, changes an existing mulching cultivation production method for the crops, and achieves the purpose of protective mulching cultivation.

The invention discloses a medicine thermal insulation box with a precise temperature control function, a medicine thermal insulation method, and a novel application of tetradecane. The medicine thermal insulation box with the precise temperature control function comprises a thermal insulation box body having a containing chamber, and an upper thermal insulation box cover which can be covered on the thermal insulation box body. The containing chamber is divided into a medicine containing chamber and a cold source containing chamber by a heat accumulation partitioning board. The heat accumulation partitioning board comprises a housing, and a heat accumulation agent which is sealed inside the housing and is of a phase-change temperature of 3-7 degrees centigrade. The medicine thermal insulation box with the precise temperature control function or the medicine anti-freezing thermal insulation method can utilize the heat energy of the heat accumulation agent to neutralize the cold energy of the cold source; in the process of delivering the heat energy, the heat accumulation agent can be solidified and discharge the heat energy when the temperature of the heat accumulation agent drops to the phase-change temperature, so as to further neutralize the cold energy of the cold source, thereby preventing the medicine from being frozen due to the excessively low temperature.

The invention discloses a dual-source heat-supply water-drainage antifreezing method for construction joint of tunnel in cold area, which adopts two energy resource forms of hot gas and electric energy to carry out heat supply and water drainage at the drainage passage of the construction joint in small range; and the hot gas and the electric energy can be used independently or in combination. Based on a drainage water stopper, the method provides a dual-source heat supply pipe to carry out heat supply and thaw in small range by section and time on the construction joint of the tunnel by using two energy resources of hot air and electric energy, prevents the drainage pipeline at the construction joint from being frozen and blocked, realizes effectively drainage, thus avoiding freezing damage to the construction joint of tunnel in cold areas.