64results about How to "Prevent excessive evaporation" patented technology

The invention discloses a sweet potato cultivation method in hills and mountains, comprising the following steps of: A, selecting variety; B, raising seedlings: the seeding time is in March, the seeded potatoes are oblique in rows with head up and tail down, plant ash is covered after seeding, fine soil is covered, dual gold herbicide and glyphosate are sprayed on the ridges, and mulching film is coated; C, planting: considering that the blocks in hills and mountains have different sizes, micro-ridge single-row planting is adopted, the planting time of spring potato is in April, the planting time of summer potato is in May, the head and the middle of seedlings are cut, oblique planting is adopted, soil is covered, and moisture supply is maintained after planting; D, applying fertilizer: sweet potato is potassium-liking crop and the applied fertilizer is mainly organic fertilizer; and E, intertilling, weeding and earthing up: intertilling has the effect on breathing and is performed after planting, the depth becomes shallow, and weeding and earthing up are combined with intertilling. The method is easy and simple to operate, adopts micro-ridge single-row planting, efficiently uses the soil, causes the seedbed to be insulated, prompts the potato tubers to sprout quickly and abundantly, simultaneously can inhibit occurrence of black spot, and increases the yield by 20-30%.

The calibration tool is provided for use with a detector, such as a detector for detecting trace amounts of one or more substances of interest. The calibration tool includes a body with at least one reservoir for retaining the calibration solution therein. A nib projects from the body and communicates with the reservoir. The nib can be wiped across a detection surface and the detection surface then may be presented to a detector. The detector then can be calibrated for the particular substance of interest in the calibration solution. The calibration tool may include plural reservoirs isolated from one another and plural nibs for applying the calibration solution to a detection surface.

The invention discloses an intelligent telescopic water storage tank with high rainwater collecting efficiency and a good filtering effect. The intelligent telescopic water storage tank comprises a water tank body and a telescopic box sleeved with the water tank body, a pressure sensor is arranged in the water tank body, an electric push rod and a controller are arranged on the outer wall of the water tank body, and the signal output end of the pressure sensor is connected with the signal input end of the controller. The signal output end of the controller is connected with the signal input end of the electric push rod, the free end of the electric push rod is connected with the upper portion of the telescopic box, the top face of the telescopic box is a concave face, the top face in the telescopic box is communicated with a plurality of filters, and each filter comprises a U-shaped primary filter element and a U-shaped secondary filter element which are communicated. A sealing bar is arranged between the water tank body and the telescopic box. The intelligent telescopic water storage tank has the advantages of being simple in structure, convenient to use and transport, capable of purifying water and preventing excessive evaporation of stored water and variable in volume and facilitating rainwater collection.

The invention discloses an intelligent local loosing and rotating and even straw covering corn planter, and belongs to the technical field of agricultural mechanical devices. The corn planter comprises a vehicle body, a straw collecting mechanism, a local loosening and rotating mechanism, a sowing and fertilizer applying mechanism, a soil covering mechanism, a straw scattering mechanism and a compacting mechanism. The straw collecting mechanism comprises a collecting and smashing assembly and a pressure detecting assembly. The pressure detecting assembly is installed on the collecting and smashing assembly. The sowing and fertilizer applying mechanism comprises a fertilizer applying assembly, a sowing assembly and a plurality of grating sensors. A plurality of cameras are arranged at the lower end of the soil covering mechanism. A hydraulic system is arranged on the vehicle body. A cab is arranged at the front end of the vehicle body. A controller and a displayer are arranged in the cab. The vehicle body can also be an existing tractor. The intelligence of the corn planter is improved, the straw collecting mechanism and the sowing and fertilizer applying mechanism can be automatically monitored, the working state of the corn planter can be monitored in time, the corn planter is prevented from being damaged, the straw return-to-field effect is better, and the growth of corn is facilitated.

The invention discloses a cooking utensil and a control method and device thereof. The control method comprises the following steps: detecting whether the cooking utensil enters a heat preservation state or not; and controlling the cooking utensil to execute a plurality of heat preservation stages after the cooking utensil enters the heat preservation state, wherein the heat preservation temperatures corresponding to the different heat preservation stages are different. The technical problems that in the prior art, after a cooking utensil enters a heat preservation state, the heat preservationtemperature is fixed, high temperature is not beneficial for eating by users, and food is prone to deterioration when the temperature is low are solved.

The invention discloses a road construction dust falling device structurally comprises a power mechanism, a water pipe assembly, a fixed supporting ring, an air duct, a hydraulic cylinder, a rotary cloud platform, a water tank, universal wheels and a machine body; the universal wheels are arranged at four corners of the bottom of a machine body correspondingly; the water tank is arranged in the machine body; compared with the prior art, the road construction dust falling device has the beneficial effects that the power mechanism, the water pipe assembly, the fixed supporting ring, the air duct, the hydraulic cylinder, the rotary cloud platform, the water tank and other components are combined, an operator can adjust the spraying height according to the requirement of the dust falling spaceposition; the road construction dust falling device can adapt to different spraying distances, water can conduct circular spraying movement according to requirements, angle adjustment does not need to be conducted manually, the spraying area is large, the spraying space is large, the dust falling time is short, meanwhile, the sprayed water can be cooled, water mist evaporation is prevented, and the dust falling efficiency can be improved.

The present invention relates to an automatic water supply apparatus having function of flowerpot humidification. More specifically, the apparatus comprising: a water reservoir (10) having water stored therein; a hygroscopic water-reservoir brick (20) placed in the water reservoir (10) such that a portion thereof is submerged in the water of the water reservoir (10); and a hygroscopic disc (30) inserted into a water outlet (3) formed on the lower portion of a flowerpot (2) so as to slightly protrude downward from the water outlet (3), wherein the flowerpot is seated on the hygroscopic water-reservoir brick (20) so that the hygroscopic disc (30) of the flowerpot makes contact with the hygroscopic brick (20) and the water is automatically supplied to the flowerpot through water infiltration caused by osmotic pressure, thereby providing convenience in use and achieving eco-friendly humidification.

The invention provides a method and apparatus for producing solid sodium bicarbonate by using acidic gas. The process employs sodium carbonate solution as an absorption liquid, sodium hydroxide solution as a washing liquid and sodium sulfhydrate as a protective solution, and comprises four sections of absorption reaction, solid-liquid separation, punching washing and secondary solid-liquid separation, so as to achieve exhaust emissions on standard, and produce solid sodium bicarbonate product and sodium sulfhydrate solution product in line with national standards for quality of products. The apparatus comprises a liquid film absorption reactor, a solid-liquid separator, a punching scrubber, a process pipeline and a pump. The acidic gas treatment method and apparatus achieve dual goals of acidic gas purification and contaminant recycling.

The invention provides a novel acidic gas treating process and apparatus. The acidic gas treating process employs a gas-liquid two-phase countercurrent absorption reaction and uses a NaOH solution as an absorption liquid to treat acidic gas so as to produce NaHS. According to the process, a primary liquid reaction product and a secondary liquid reaction product are cyclically used, the secondary liquid reaction product is used a tertiary reaction absorption liquid, and an MDEA solution is used as a fourth-stage reaction absorption liquid; thus, the purpose of replacement of CO2 with H2S is achieved, the generation amounts of Na2CO3 and NaHCO3 in a liquid phase product are reduced, precipitation of crystals is prevented, and long cycle operation of the apparatus is guaranteed. The acidic gas treating process provided by the invention is simple and can achieve the dual objectives of purification of acidic gas and reclamation of pollutants.

The invention provides a method and apparatus for producing sodium bicarbonate by using acidic gas. The process employs sodium carbonate solution as an absorption liquid, sodium hydroxide solution as a washing liquid and sodium sulfhydrate as a protective solution, and comprises six sections of absorption reaction, solid-liquid separation, washing, an air-slake pneumatic conveying gas device and bagging, so as to achieve exhaust emissions on standard, and produce sodium bicarbonate chemical product in line with national standards for quality of products. The apparatus comprises a liquid film absorption reactor, a solid-liquid separator, a scrubber, an air-slake pneumatic conveying gas device, a cyclone separator, a process pipeline and a pump. The acidic gas treatment method and apparatus achieve dual goals of acidic gas purification and contaminant recycling.

The invention discloses a tea leaf vertical lifting and moisture regain integration apparatus. The apparatus comprises a vertical lifting device and an S-shaped moisture regain device, the vertical lifting device is formed by a body, a double-roller chain transmission mechanism, hoppers and a first motor, the body has a hollow Z-shaped structure, the double-roller chain transmission mechanism is formed by a pair of driving sprockets, a pair of driven sprockets, a plurality of pairs of traction sprockets and two roller chains, the pair of driving sprockets are in transmission connection with the first motor through driving shafts, the hoppers are equidistantly connected between the two roller chains, a discharge opening is arranged below the tail end of the body in an upper horizontal segment, the S-shaped moisture regain device is arranged below the discharge opening, and the S-shaped moisture regain device is formed by a frame, a plurality of transmission mechanisms and a plurality of second motors. The apparatus integrates transportation and moisture regain, has a compact structure, greatly improves the automation degree of a tea leaf production apparatus, reduces the labor intensity, and is helpful for improving the production efficiency of tea leaves.

The invention discloses an Ag-Li-Sn silver lithium electrical contact alloy with high thermal conductivity and damping and a processing technology thereof. By weight percentage, the chemical composition of the alloy is: Li:0.5‑3.0wt.%, Sn:1.0‑1.5wt.%, Zn:2.0‑4.0wt.%, Ba:0.5‑1.5wt.%, Sr:0.5‑ 1.2wt.%, Pd: 0.2‑0.4wt.%, Zr: 0.2‑0.3wt.%, Th: 0.1‑0.2wt.%, Ce: 0.5‑0.8wt.%, B: 0.5‑1.0wt.%, The balance is silver. Compared with silver alloys used in traditional electrical contact materials, this material has excellent mechanical properties, high electrical conductivity and high damping coefficient.

A Cu-Li-Ge copper-lithium alloy replacing beryllium bronze, the chemical composition of the alloy is: Li:0.2-1.6wt.%, Ge:2.0-3.0wt.%, Sr:2.0-3.0wt. .%, Ce: 0.2‑0.4wt.%, Ho: 0.2‑0.3wt.%, Pr: 0.2‑0.4wt.%, V: 0.6‑0.8wt.%, S: 0.8‑2.6wt.%, balance for copper. The material has excellent mechanical properties and electrical conductivity. Elastic modulus: 125‑138GPa; Yield strength: 950‑1080MPa; Tensile strength: 1100‑1200MPa; Elongation: 4‑10%; Conductivity (%IACS): 50‑80, while traditional beryllium copper is 18‑25 .

The invention discloses a high-damping Ag-Li-Sn silver-lithium alloy with electrical conductivity close to that of pure silver. In terms of weight percentage, the chemical composition of the alloy is: Li:0.5‑3.4wt.%, Sn:2.6‑3.8wt.%, Be:0.2‑0.5wt.%, Hf:0.1‑0.3wt.%, Sr:0.5‑ 0.8wt.%, Ge: 0.2‑0.4wt.%, In: 0.1‑0.3wt.%, Ta: 0.1‑0.3wt.%, Gd: 0.2‑0.3wt.%, B: 0.2‑0.4wt.%, The balance is silver. Compared with traditional electrical contact silver alloys, the material has excellent mechanical properties, high electrical conductivity and excellent damping properties.

The invention provides a thermodynamic cooling power tower. The thermodynamic cooling power tower is provided with a thermodynamic draught fan and a vertical fan blade power generation system, whereinthe thermodynamic draught fan is composed of a wind cylinder, and a return water inlet, a heating medium distribution tube, a heat exchange core tube, a heating medium collection system and a water outlet, which are sequentially arranged in the wind cylinder along the flowing direction of a heating medium, the heating medium collection system is composed of a liquid collection tube, a collectionpump, a pump outlet pipeline and the like, and a heat compensation system can possibly be arranged between the liquid collection tube and the collection pump. Closed circulation of the thermodynamic cooling power tower can reduce power consumption of a circulating cooling water conveying device, converts potential waste heat into electric energy, and applies the electric energy in a production line of an enterprise of the applicant, and simultaneously water vapor is prevented from excessively evaporating, and after popularization and application, the thermodynamic cooling power tower is expected to save a large amount of water source every year, and greatly reduces power consumption.

The invention provides a multi-stage countercurrent absorption process and system for acidic gas. The absorption process employs a gas-liquid two-phase countercurrent absorption reaction and uses a NaOH solution as an absorption liquid to treat acidic gas so as to produce NaHS. According to the process, a crystallizer and a separator are arranged in a primary reaction and a secondary reaction, and heat is taken out of a reactor; and through filling of the NaOH solution in stages, peak clipping of reaction heat is realized, and local crystallization caused by generation of heat spots is prevented. A combination of a Venturi reactor and a rotating packed bed reactor is used as a reaction apparatus which is flexible to operate and has high mass transfer efficiency. The acidic gas absorption process provided by the invention is simple and can achieve the dual objectives of purification of acidic gas and reclamation of pollutants; and the acidic gas absorption system has the advantages of small scale, low energy consumption and low proneness to obstruction.

The invention discloses an automatic planting system for nursery stock seeds. The automatic planting system comprises a mechanical arm capable of horizontally moving, a storage device is fixedly mounted at the tail end of the mechanical arm, and a planting unit is arranged below the storage device; a first discharging unit, a second discharging unit and a third discharging unit are arranged at the lower end of the storage device side by side, and the first discharging unit, the second discharging unit and the third discharging unit can feed seeds, granular fertilizer and water to the planting unit. The system effectively prevents the seeds wetted by water from being excessively evaporated, and the seeds are buried with a loose soil-fertilizer mixture, so that the soil fertility is enhanced, and seedling burning is avoided.

The invention discloses a palladium-magnesium alloy for a magnesium-containing high-conductivity and high-strength electrical contact material. In terms of weight percentage, the chemical composition of the alloy is: Mg: 1.5‑3.0wt.%, Hf: 0.2‑0.8wt.%, Re: 0.2‑1.4wt.%, Sn: 1.2‑1.4wt.%, Al: 1.0‑ 1.5wt.%, Co: 0.4‑0.5wt.%, Ag: 0.2‑0.8wt.%, Si: 0.2‑0.4wt.%, Ge: 0.1‑0.2wt.%, B: 0.2‑0.5wt.%, The balance is palladium. Compared with the traditional electrical contact palladium alloy, the material has excellent mechanical properties and high electrical conductivity.

A sheath flow device for an evaporation light scattering detector comprises an evaporation pipe fastener (110), an evaporation pipe heat insulating component (120), a sheath flow nozzle blocking plate (130), a sheath flow nozzle (140), a sheath flow sleeve (150), a sheath flow outlet piece (170) and a stainless steel spray needle (160). The evaporation pipe fastener, the evaporation pipe heat insulating component, the sheath flow nozzle blocking plate, the sheath flow nozzle, the sheath flow sleeve and the sheath flow outlet piece are concentrically connected orderly from front to back, and all provided with concentric inner holes. Said device is applicable to ELSD sheath flow devices ranging from nanoliter-scale to microliter-scale. On one hand, material particles entering a testing pool are enveloped and aggregated so that the formation of eddy and turbulence can be reduced, the chromatographic peak shape of a sample can be improved and the stability of sample detection can be enhanced; on the other hand, the testing pool can be cleaned so that baseline noise can be reduced and the signal to noise ratio can be increased.

The invention provides a comprehensive utilization process and system for acidic gas. The comprehensive utilization process employs a NaOH solution as an absorption liquid to treat acidic gases so as to produce NaHS. According to the process, a liquid reaction product obtained in each stage is cyclically used; and through filling of the NaOH solution in stages and adjusting of reaction intensity in each stage, peak clipping of reaction heat is realized, and local crystallization caused by generation of heat spots is prevented. A combination of a Venturi reactor and a rotating packed bed reactor is used as a reaction apparatus which is flexible to operate and has high mass transfer efficiency. The acidic gas treatment process provided by the invention is simple and can achieve the dual objectives of purification of acidic gas and reclamation of pollutants.