107results about How to "No burning phenomenon" patented technology

The invention relates to a coated compound fertilizer, in particular to a totally biodegradable coated compound fertilizer and a preparation method thereof. The coated compound fertilizer consists of a coated layer and a compound fertilizer core. The main body of the coated layer is polylactic acid and/or polybutylene succinate. The coating process adopts fluidized bed spraying-coated technology, and comprises the following steps: dissolving polylactic acid and/or polybutylene succinate in trichloromethane, adding carboxymethylcellulose, urease and/or nitrification inhibitor, organic and/or inorganic conditioner in the solution, spraying and coating the surfaces of the fluidized compound fertilizer granules after uniformly mixing the mixture under the stirring of a stirrer to form the uniform and complete organic polymeric membrane layer. The process has the advantages of easy implementation, and capacity of effectively slowing down the release of the fertilizer nutrient to the outside and the conversion rate of nitrogen in soils, effectively controlling the release and conversion of the fertilizer nutrient in soils, and reducing the pressure on environment caused by the rapid release of nutrient. The coated material can be totally biodegradable, and the degradation products have no secondary pollution to the environment.

The invention discloses slow release urea containing gamma-polyglutamic acid and a urease inhibitor. The slow release urea is obtained by spraying a coated slow release solution onto the outer surface of urea particles and drying, wherein the coated slow release solution contains gamma-polyglutamic acid and a urease inhibitor. The invention further discloses a preparation method of the slow release urea. The gamma-polyglutamic acid and the urease inhibitor in the slow release urea have synergic actions, and the gamma-polyglutamic acid can form a layer of protective film on the surfaces of a fertilizer and the urease inhibitor, so that the utilization ratio of the fertilizer is increased, and environmental pollution is lowered.

The invention relates to a method for pouring a hollow fibrous membrane assembly, belonging to the technical field of membrane separation. The method for pouring the hollow fibrous membrane assembly is characterized by comprising the following steps of: assembling a hollow fibrous membrane into a membrane assembly, firstly passivating two ends of a hollow fibrous membrane beam, and pouring a pouring sealant to adhere and fixing the hollow fibrous membrane on an assembly shell to form relatively sealed separation environment. According to the method for pouring the hollow fibrous membrane assembly, disclosed by the invention, the purposes of adhering, fixing, wire-burning resisting and root protecting can be realized as long as once pouring is carried out on a membrane assembly; and the method for pouring the hollow fibrous membrane assembly, disclosed by the invention has the advantages of simple process, low cost, effective protection on the root of membrane fiber, no wire burning phenomenon, improvement on mechanical strength of the root of the membrane fiber, difficulty for breaking wires, simpleness, convenience, feasibility, wide application and the like.

A permanent magnetic contactor and its control device are used in starting switch control devices and engines and switching on and off the master circuit. A permanent magnetic steel is set between two static cores to form a U-like bulk, two iron cores connected in series and in a same polarity, a tower spring supports the framework of the packet, the top of the tower spring is connected with a dynamic core. The output over voltage protection part of said control device is connected with the rectification part, output of which is connected with a low-voltage judgment part the output of which is connected with a shut off executing part and the output of which is connected with the wire packet.

The invention discloses sulphur-based gamma-biological compound fertilizer and a preparation method thereof. The sulphur-based gamma-biological compound fertilizer comprises gamma-poly(glutamic acid), wheat straw extract, microbial agents and secondary elements, namely, nitrogen elements, phosphorus elements and potassium elements. The gamma-poly(glutamic acid) and the microbial agents are prepared through the fermentation process. The wheat straw extract is obtained by extracting and processing young wheat straw seedlings. The secondary elements are obtained through related compound powder. The sulphur-based gamma-biological compound fertilizer comprises 0.1-5.0 parts of gamma-poly(glutamic acid), 3-12 parts of wheat straw extract, 2-6 parts of microbial agents, 20-30 parts of urea, 55-85 parts of monoammonium phosphate and 30-50 parts of potassium sulfate, wherein microelements include calcium, magnesium, sulphur, manganese, zinc, boron and molybdenum. By means of the sulphur-based gamma-biological compound fertilizer, the nitrogen nutrition utilization rate can be increased, and by means of the supplementary effect of synergistic interaction of the gamma-poly(glutamic acid) and the wheat straw extract, the soil microenvironment is improved, the nutrient absorption is promoted, the crop yield is increased, and the disease-resistant, stress-resistant, anti-interference and successive crop prevention capacity of plants is improved.

The invention provides silicon rubber with excellent electric arc resistant performance and a preparation method thereof. The silicon rubber comprises the following raw materials in parts by weight: 100 parts of crude silicon rubber, 50-200 parts of ATH (Aluminum Hydroxide), 25-100 parts of BN (Boron Nitride), 0.5-3.5 parts of vulcanizer, 1-3 parts of TAIC (Triallyisocyanurate), 1-5 parts of hydroxyl silicone oil, 1-5 parts of silane coupling agent and 100 parts of inorganic filler, wherein the inorganic filler is composed of the ATH and the BN. According to the silicon rubber provided by theinvention, an emulsion and the crude silicon rubber is directly subjected to emulsion blending on a double roller rubber mixing mill, thereby improving the dispersion and avoiding rising of nano-particles; by adding the BN on the basis of filling the ATH, the silicon rubber has less mass loss after high-voltage low current arc resistance test; meanwhile, the electric arc is always disassociated on the surface of the material in the electric arc ablation process; furthermore, the surface of the material has no burning phenomenon; the surface of the material only appears little yellowing after the test; and little black residue appears near an electrode.

The invention relates to the field of water-retaining slow/controlled-release fertilizers, specifically to a water-retaining high-molecular slow-release nitrogen-potassium fertilizer and its preparation method. The preparation method comprises the following steps: (1) adding a potassium hydroxide solution and acrylic acid into a reaction vessel, and stirring in an ice bath until the reactants are mixed uniformly; then adding urea and stirring until urea is completely dissolved; adding an initiator potassium persulphate, stirring until potassium persulphate is completely dissolved; and adding a cross-linking agent N,N'-methylene bisacrylamide, stirring until the cross-linking agent is completely dissolved, and continuously stirring for 30 min until the solution is mixed uniformly; and (2) sealing the uniformly-mixed solution, reacting at 25-75 DEG C for 2-6.5 h, granulating, and drying so as to obtain the water-retaining high-molecular slow-release nitrogen-potassium fertilizer. The preparation method is a solution polymerization method. The technology is simple and easy to operate. The prepared water-retaining high-molecular slow-release nitrogen-potassium fertilizer is a chemically synthesized water-retaining slow-release fertilizer and can make up the defect of a film-coated water-retaining slow-release fertilizer that nutrient release is limited by a coated material and a technology is complex.

The invention relates to an electric control box for buses. The electric control box comprises a casing, a mounting plate, and a printed circuit board, wherein the printed circuit board is fixed on the mounting plate and the mounting plate is fixed in the casing. The printed circuit board is provided with a power-on switch, a power switch, a five-point relay, a diode group, a time-delay relay, a preheat relay, a starting relay, and a fuse module. Compared with the prior art, the electric control box of the invention has the advantages of ability of realizing functions of overheating protection and over-current protection, good safety, small size, and the like.

The invention belongs to the field of heat-not-burn cigarettes, and particularly relates to a closed heating type cigarette with a smoke channel. The cigarette comprises a plug (5), a tobacco section(1), a low-suction-resistance section (2) and a functional filter tip section (3) which coaxially abut against one another in sequence from upstream to downstream, and the cigarette is wrapped with anouter wrapping piece (4). The low-suction-resistance section (2) is a pipe body provided with an axial center cavity (2-1) and at least one circumferential side wall through hole (2-2), and an axialfirst smoke channel (1-1) is formed in the axis of the tobacco section (1). According to the cigarette, a plurality of axial channels are designed in the tobacco section for the first time, and diffusion of smoke in the tobacco section is facilitated.

The invention relates to a carbide drill and a machining process thereof, and aims at providing a carbide drill with good wear resistance, good chip discharge performance and a long service life and a machining process thereof. The carbide drill comprises a drill tip, a tool body and a tool handle. The tool body and the tool handle are integrally formed, a plurality of spiral grooves are formed in the tool body, an included angle is formed between each spiral groove and the horizontal plane, and the included angle ranges from 10 degrees to 15 degrees. The left end section of the drill tip is a conical face, the end face, close to the drill tip, of the tool body has an inner conical angle with the taper identical to the taper of the left end section of the drill tip, and the end face, close to the drill tip, of the tool body is welded and fixed to the drill tip in a V-shaped butt welding mode. The drill tip comprises a drill tip body and a drill tip head, the surface of the drill tip body is in a W shape, a cross edge is arranged on the drill tip head, two cylindrical edge strips tangent to the outer circle of the drill tip are arranged on the drill tip, a marking edge parallel to the tool handle is arranged on the edge of the drill, and negative relief angle design is adopted in the marking edge. An adjusting screw capable of adjusting the length of the drill is arranged at the tail end of the tool handle.

The invention provides a biomass particle combustor. The biomass particle combustor comprises feeding equipment, combustion equipment and blast air supply equipment, wherein the feeding equipment comprises a material pipe; the combustion equipment comprises an inner fire outlet pipe and an outlet fire guide pipe; the blast air supply equipment comprises a blast pipe, an outer air box and an inner air box; the inner air box is arranged inside the outer air box, and the blast pipe is communicated with the outer air box and the inner air box; the material pipe penetrates through the inner air box to be communicated with the inner fire outlet pipe; the inner fire outlet pipe is arranged on the outer wall of the inner air box and penetrates through the outer air box, and vent holes are formed in the inner fire outlet pipe; the outlet fire guide pipe is fixed to the outside of the outer air box to sleeve the part, outside the outer air box, of the inner fire outlet pipe, and a gap is reserved between the outlet fire guide pipe and the inner fire outlet pipe and communicated with the outer air box. The biomass particle combustor is reasonable in structural design, low in cost and high in combustion efficiency.

An improved cylinder features that two parallel piston rings are in a slot on piston, the joint of piston ring is butt connected in step mode, the joints of two piston rings are staggered. It is possible that two piston rings are sleeved together. Its advantages are high durability and sealing performance, and elongated service life of engine.

The invention belongs to the field of cigarettes, and particularly relates to a closed heating type cigarette capable of reducing sidestream smoke. The cigarette comprises a tobacco section (1), a low-suction-resistance section (2) and a functional filter tip section (3) which are sequentially and coaxially connected in an abutting mode from upstream to downstream, wherein the low-suction-resistance section (2) is a pipe body with an axial central cavity (2-1) and a circumferential side wall through hole (2-2); and the low-suction-resistance section (2) further comprises barrier layers (2-3) which are arranged on the circumferential side wall of the central cavity (2-1) and have certain air permeability. According to the cigarette, the barrier layers covering the circumferential side wallof the central cavity and the side wall through holes are arranged on the low-suction-resistance section, the cigarette has certain air permeability, and inflow of external air is not affected duringsmoking; and when the cigarette is not sucked, the smoke cannot escape through the side wall through holes, so that the smoke loss can be effectively reduced.

The invention discloses a composite foaming agent for a rigid PVC foam material. The foaming agent comprises the following raw materials, by weight: 5-10 parts of azodicarbonamide, 2-4 parts of diethyl azodicarboxylate, 2-3 parts of OBSH, 0.5-1.5 parts of lauryl sodium sulfate, 1-2 parts of sodium bicarbonate, 1-2 parts of zinc carbonate, 1-3 parts of urea, 0.5-0.8 part of lead stearate, 2-4 parts of citric acid, and 15-20 parts of glycol propyl ether. According to the invention, raw materials including urea, zinc carbonate, sodium bicarbonate, sodium dodecyl sulfate are adopted for modification of azodicarbonamide to prepare the composite foaming agent for rigid PVC foam material; and the composite foaming agent has advantages of decomposition temperature within the range of molding processing of rigid PVC foam material, basically balanced heat absorption-release, smooth decomposition rate, large deflating amount and no abruptness. The rigid PVC material prepared from the composite foaming agent has good mechanical properties, uniform and fine pores, thin pore wall, easily controlled processing conditions, and no emergence of burning.

The invention belongs to the field of heat-not-burn cigarettes, and particularly relates to a closed heating type cigarette with controllable smoking resistance. The cigarette comprises a tobacco section (1) with a sealed upstream end, a controllable suction resistance section (2) and a functional filter tip section (3) which are sequentially and coaxially connected in an abutting mode from upstream to downstream, and the cigarette is wrapped with an outer wrapping piece (4). The controllable suction resistance section (2) is a pipe body with an axial central cavity (2-1) and a circumferentialside wall through hole (2-2), and the controllable suction resistance section (2) further comprises a limiting flow guide element (2-3) which is arranged in the center cavity (2-1) and provided withan axial channel. According to the cigarette, a blocking layer covering the circumferential side wall of the central cavity and the side wall through holes is arranged on the controllable suction resistance section, the cigarette has certain air permeability, inflow of external air is not affected during suction, and when the smoke is not sucked, the smoke cannot escape through the side wall through holes, so that the smoke loss can be effectively reduced.

The invention discloses a preparation process of a high-thermal-conductivity eutectic aluminum alloy material, and belongs to the technical field of eutectic aluminum alloy material preparation. According to the preparation process, a nanoscale seed crystal refiner adding and filtering purification process is added in the preparation process, so that the effective residual amount of the B elementand the purity of molten aluminum are controlled, aluminum alloy is fully refined, the B element in the aluminum alloy does not have oxidation and burning loss phenomena, a product has a long-acting and stable effect, by fully filtering and purifying high-temperature molten aluminum alloy, harmful impurities in the product are effectively controlled, the product performance is effectively guaranteed, intermediate modifiers and refiners do not need to be added again in the die-casting process, and the process has the excellent characteristics of being efficient and rapid.

The invention discloses a method for rapidly drying ophiopogon japonicus in a production place. According to the method for rapidly drying the ophiopogon japonicus in the production place, the problems that in the prior art, the drying product quality and drying efficiency of ophiopogon japonicus in a production place cannot be taken into account, the shape of obtained ophiopogon japonicus is incomplete, and the quality is influenced are solved. The method for rapidly drying the ophiopogon japonicus in the production place comprises the following steps that A, the ophiopogon japonicus is harvested, fibril and impurities are removed, cleaning is conducted, surface moisture is aired, and the fresh ophiopogon japonicus is obtained; B, the fresh ophiopogon japonicus obtained in the step A is placed in a vacuum dryer to be heated and dried; and C, the dried ophiopogon japonicus is cooled to the indoor template and packed, and the ophiopogon japonicus is obtained. The process is simple, and operation is easy; and by adopting the method to dry the production place ophiopogon japonicus, time is short, labor intensity is low, and the quality of an obtained finished product is high.

The invention relates to a fermentation technology of biological organic bacterial manure, and belongs to the technical field of biological organic bacterial manure manufacturing. The technology includes the steps that the raw materials of chicken manure, tobacco waste and cereal, cotton and oil processing plant waste are piled at the normal temperature to be naturally dehydrated; then, a compound fermentation strain is added, and after two times of fermentation and ageing treatment, the biological organic bacterial manure is obtained. By means of the technology, escherichia coli, ascaris eggs and some infectious germs in the chicken manure can be killed in the decomposing process, worm eggs or harmful pathogens or weed seeds in the mixed materials can be thoroughly killed through ageing treatment, and thus the biological bacterial manure is deeply decomposed and has high fertilizer efficiency. The technology is environmentally friendly in production process, short in decomposing period and small in nutrient loss; experiments on the crops of rice, lactuca sativa L, cotton and the like show that the yield is greatly increased, and pest and disease damage is effectively controlled. The problems that in a traditional fermentation method, maturity is low, pathogens and weed seeds in raw materials can not be completely killed, the fermentation process pollutes the environment and fertilizer efficiency is low are solved.

The invention discloses a formula fertilization machine for rotary tillage seeding of wheat. The machine comprises a suspension frame, a gearbox, a transmission case, a rotary tillage device, a seeding device, a formula fertilization device and a compressing and soil covering device which are mounted on a rack, wherein the rotary tillage device comprises a cutter roller consisting of a cutter shaft and blades, and left-handed blades and right-handed blades for rotary tillage are mounted on the cutter shaft of the cutter roller; the formula fertilization device comprises a potassium fertilizer box, a phosphorus fertilizer box and a nitrogen fertilizer box; the seeding device comprises a wheat seed box, fertilizer discharging devices corresponding to each fertilizer box are mounted at the lower ends of the fertilizer boxes, seed discharging devices corresponding to the seed boxes are mounted at the lower ends of the seed boxes, a fertilizer discharging trough corresponding to each fertilizer discharging device is arranged below the discharging end of the fertilizer discharging device, conveying troughs extending to the front of the rack are arranged below the discharging end of the fertilizer discharging troughs on the same column, and the compressing and soil covering device is mounted at the rear end of the rack. The machine is reasonable in structural design, adopts a rotary tillage, seeding and fertilization integrated operation mode, is good in operation effect and high in operation efficiency, and adopts formula fertilization, thereby increasing the fertilizer efficiency and the fertilizer use ratio.