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465 results about "Mosquito coil" patented technology

A mosquito coil is a mosquito-repelling incense, usually made into a spiral, and typically made using dried paste of pyrethrum powder. The coil is usually held at the center of the spiral, suspending it in the air, or wedged by two pieces of fireproof netting to allow continuous smoldering. Burning usually begins at the outer end of the spiral and progresses slowly toward the center of the spiral, producing a mosquito-repellent smoke. A typical mosquito coil measures around 15 centimetres (6 in) in diameter and lasts around 7–12 hours. Mosquito coils are widely used in Asia, Africa, South America, Canada and Australia.

Smokeless mosquito-repellent incense

The invention discloses a smokeless mosquito-repellent incense and belongs to the technical field of mosquito-repellent incense preparation.The smokeless mosquito-repellent incense is prepared from, by weight, 140-200 parts of sludge coal powder, 6-8 parts of anthracite, 24-32 parts of a binding agent, 4-6 parts of mica powder and 400-500 parts of water.According to the smokeless mosquito-repellent incense, sludge coal serves as an incendiary agent, inorganic matter in the sludge coal serves as a flame retardant, a novel approach is provided for resource utilization of sludge coal, a large amount of disafforestation in the mosquito-repellent incense industry is avoided at the same time, and thus environment protection is promoted.The smokeless mosquito-repellent incense is nontoxic, harmless and capable of meeting the requirement for the environment friendliness of the product; after the smokeless mosquito-repellent incense is burnt and absorbed by the human body, asthma, nerve positioning and cancer cannot be caused; the smokeless mosquito-repellent incense is smooth in appearance and free of cracks, the fracture resistance force reaches 431-463 g, the light time reaches 8.71-9.09 h, no smoke is generated in the combustion process, and end breakage and flameout can be avoided when the mosquito-repellent incense passes through an iron tooth disk.
Owner:庞用

Multifunctional frozen soil circulation single shear test device and test method

ActiveCN110940598APrevent horizontal translationExact dilationMaterial strength using steady shearing forcesFreeze thawingSoil science
The invention discloses a multifunctional frozen soil circulation single shear test device and test method. The device comprises a shear box system, a reaction frame system, a refrigeration temperature control system, a loading system, a sliding system and a data monitoring system. The shear box system comprises a shear box body, a top loading plate, a fixing pin and a limiting baffle. The shearing box body comprises an upper shearing box, a plurality of shearing stacking rings and a lower shearing assembly which are sequentially stacked from top to bottom. Mosquito-repellent incense-shaped liquid grooves are formed in the top loading plate and a bottom plate of the lower shearing assembly, so that the temperature of each part of the sample is more uniform; and an annular liquid groove isformed in the shearing stacked ring. An internal and external combined temperature control mode and external constant temperature control are adopted in the test process, the temperature of the upperposition, the middle position and the lower position inside are independently controlled by the three high-low temperature constant temperature circulating baths respectively, the temperature controlprecision is improved, and the accuracy of test results is enhanced. The device can be used for carrying out cyclic single shear tests on the problems of fully frozen soil, fully thawed soil, temperature gradient, freeze-thaw cycle, freeze-thaw interface and the like.
Owner:HOHAI UNIV

Coarse aggregate degradation test device and method considering relative humidity and freeze-thaw coupling effect

The invention discloses a coarse aggregate degradation test device and method considering relative humidity and freeze-thaw coupling effect. The coarse aggregate degradation test device comprises a pressure chamber system, a temperature control system, a humidity control system, a loading system, a computer and a data acquisition system. The temperature control system comprises a constant-temperature chamber, two mosquito-repellent incense type flow channels, a columnar spiral flow channel and three constant-temperature circulating baths; the constant-temperature chamber is arranged at the peripheries of the pressure chamber system and the loading system in a surrounding manner; the temperature of the constant-temperature chamber, the temperature of the lower mosquito-repellent incense type flow channel at the bottom of the sample, the temperature of the columnar spiral flow channel in the middle of the sample and the temperature of the upper mosquito-repellent incense type flow channel at the top of the sample form a gradually decreasing temperature gradient; and the humidity control system is arranged in the constant-temperature chamber, and the generated humidity gas flows in the sample along the gradually decreasing temperature gradient direction. The method can truly reflect the real action mechanism of the high earth and rockfill dam material in high-altitude and alpine regions, and enhances the credibility of the test result while improving the test precision.
Owner:HOHAI UNIV

Environment-friendly mosquito-repellent incense and preparation method thereof

The invention discloses environment-friendly mosquito-repellent incense and a preparation method thereof, and relates to the technical field of mosquito-repellent incense. The environment-friendly mosquito-repellent incense comprises the following raw material components in percentage by weight: 70-80% of artemisia annua residue powder, 2-5% of shaddock peel powder, 5-10% of wood charcoal powder, 8-12% of natural epidesmine powder, 4-5.95% of carboxymethyl starch and 0.05-0.1% of artemisia oil. Compared with current mosquito-repellent incense, the mosquito-repellent incense taking residues obtained by extracting artemisinin of artemisia annua as base materials adopts less and fine raw materials; the added artemisia annua residues, shaddock peel powder and artemisia oil have obvious effects in repelling mosquitoes; moreover, the artemisia annua residue powder is sufficiently utilized as a main raw material, so that the resources are utilized. The combustion type mosquito-repellent incense disclosed by the invention is sufficient in combustion, small in smoke, fragrant in smell and small in irritation to human body, further has functions of expelling flies and insects in addition to mosquitoes, has a special Chinese herbal medicine effect, and is a green and environment-friendly product.
Owner:柳州衍生科技有限公司

Method for refining metal solidification structure through complex pulse magnetic oscillation

The invention relates to a method for refining a metal solidification structure, and belongs to the technical field of metal material manufacturing. A mosquito-repellent-incense-type flat coil and a solenoid-shaped coil are connected to form a cylinder with the bottom opened, the liquid level of molten metal and the section wall of the molten metal are covered, the effect that the whole outer surface of the molten metal is covered with magnetic fields is achieved and effective refining of the solidification structure is realized. A metal material is molten firstly, then the molten metal is poured into a die placed on a complex pulse magnetic oscillation solidification device, and the molten metal is solidified under the effect of complex pulse magnetic oscillation. According to processing parameters, the pulse current I is 10 amperes to 30000 amperes, the pulse width is 10 microseconds to 100 milliseconds and the acting frequency f is 0.01 hertz to 2 kilohertzs. The method has the advantages that the method is not limited by metal materials, large-size even fine-grain ingot castings can be manufactured, no pollution is generated, energy is saved, equipment is simple, operation is convenient and the cost is low. The method is used for die casting, semi-continuous casting production and continuous casting production and is suitable for refining of solidification structures of various metal materials.
Owner:SHANGHAI UNIV

Laminated continuous extrusion metal tube mosquito coil production line and production method

The invention relates to a laminated continuous extrusion metal tube mosquito coil production line. The laminated continuous extrusion metal tube mosquito coil production line sequentially comprises an aluminum rod cutting device, an aluminum rod cleaning device, an aluminum tube extruder, an aluminum tube cooling treatment device, aluminum tube pulling devices and a formed aluminum tube coiling device; a formed aluminum tube bending mechanism is arranged between the aluminum tube pulling devices and is mounted at the discharging ends of the aluminum rod pulling devices; the formed aluminum tube coiling device is arranged under the formed aluminum tube bending mechanism; the formed aluminum tube bending mechanism and the formed aluminum tube coiling device can move relatively in the height direction; the laminated continuous extrusion metal tube mosquito coil production line further comprises a lifting device; and the intervals between the upper surfaces of laminated spirally-coiled aluminum coils on the formed aluminum tube bending mechanism and the formed aluminum tube coiling device are make to be equal through the lifting device. The invention further discloses a production method for producing the laminated continuous extrusion metal tube mosquito coils based on the production line. The production line has the advantages of being compact in structure, convenient to use, high in production efficiency, capable of achieving automatic operation easily and the like.
Owner:刘易铭

Solar energy photovoltaic mosquito killing device

The invention relates to a solar energy photovoltaic mosquito killing device which belongs to the technical field of new energy source hygienic products. In all places, such as a flood hazard area, anearthquake disaster area, a forest campsite, an exploration tent, a frontier sentry and agriculture forest travel, which are not provided with a power supply to move and supply power to a mosquito killing lamp on the spot, a plurality of mosquitoes suck human blood, disturb human rest and spread diseases. Sunlight illuminates a solar energy cell installed at the top of the device to generate direct current; one part of direct current turns a mosquito luring lamp on by a top controller and a conductive wire, and the other part of direct current is input into a lithium ion cell to be stored bya bottom controller and a conductive wire; most of direct current is converted into alternating current of 220V by the bottom controller, an inverter and a transformer; and the invention can heat a metal heating plate, lead an electric heating mosquito coil placed on the metal heating plate to kill mosquitoes, boost voltage to 1,000V-2,000V by a high pressure generator and lead a metal power gridcharged with high voltage at the periphery of the mosquito killing lamp to be capable of touching and killing the mosquitoes.
Owner:WUXI MEICUN TONGCHUN SOLAR ENERGY PV TECH AGRI PLANTATION

Integrated mosquito coil box

The invention belongs to the technical field of daily necessaries, and particularly discloses an integrated mosquito coil box, which comprises a box cover, an ash collecting box, a bottom box, a long rod and a storage box, wherein a plurality of through holes are arranged on the upper end of the box cover, a locking body is arranged on the box cover, an ash leakage net is arranged on the upper end of the ash collecting box, a baffle plate which is hinged with the ash collecting box is arranged on one end of the ash collecting box, a support is arranged on the other end of the ash collecting box, and the box cover and the ash collecting box are hinged. The upper end of the long rod is of a hook shape, and is matched and connected with the locking body, the upper portion of the long rod is hinged with the support, a pressing cap is arranged on the long rod, and is arranged above the support, and the lower end of the long rod is hinged with the storage box. The bottom box and the storage box are connected in a sliding mode, the right end of the storage box and the inner wall of the bottom box are connected through a first elastic piece. The integrated mosquito coil box solves the problems that mosquito coils are not convenient to store and fussy in use process. Compared with the prior art, the integrated mosquito coil box saves time and labor when using, is safe and sanitary, and is also extremely convenient in use process.
Owner:CHONGQING JINHE MOSQUITO REPELLENT INCENSE

Device and method for testing transient hot forming limit of metal sheet

The invention provides a device and method for testing the transient hot forming limit of a metal sheet. The test device comprises: a two-way stretching experimental device, a computer control system,an optical strain measurement system, an infrared thermometer, an electromagnetic induction heating device, a cooling device, wherein the optical strain measurement system photographs the surface deformation of a cross-shaped sample by a CCD camera; the electromagnetic induction heating device heats and maintains the temperature of the central portion of the cross-shaped sample through a mosquito-coil induction coil; and the cooling device cools the high-temperature cross-shaped sample by a high-pressure air nozzle. The device can cool the high-temperature cross-shaped sample during a stretching process at a specified cooling rate so as to accurately obtain the transient ultimate strain of the material and establish a transient hot forming limit diagram, is consistent with the continuoustemperature change characteristic of an actual hot stamping metal sheet, can achieve reliable sheet formability prediction, guides process optimization, and improves production efficiency and productquality.
Owner:CIVIL AVIATION UNIV OF CHINA

Natural electrothermal mosquito-repellent incense liquid and preparation method thereof

The invention specifically relates to a natural electrothermal mosquito-repellent incense liquid and a preparation method thereof, belonging to the field of hygienic products. The natural electrothermal mosquito-repellent incense liquid is prepared from the following components by weight: 84 to 108 parts of a mosquito-repellent drug, 8 to 15 parts of essence, 21 to 33 parts of an assistant volatilizing agent and 46 to 70 parts of deionized water. The preparation method comprises the following steps: mixing the mosquito-repellent drug, the essence, the assistant volatilizing agent and deionized water and carrying out hermetic stirring at 50 to 66 DEG C for 2 to 4 h so as to obtain the natural electrothermal mosquito-repellent incense liquid. The natural electrothermal mosquito-repellent incense liquid employs natural Chinese herbal medicines as active components, so the mosquito-repellent incense liquid is safe and nontoxic; smell emitted during usage of the mosquito-repellent incense liquid can kill mosquitoes, inhibit and kill bacteria and promote sleeping; and all the effective ingredients are extracted from plants, the raw materials are easily available and low in cost, and preparation is simple, so the natural electrothermal mosquito-repellent incense liquid is easy to promote and apply.
Owner:GUANGXI UNIV
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