108results about How to "Not easy to drift" patented technology

The invention relates to a vomitus collecting device, in particular to a vomitus collecting device capable of preventing odor for a gastroenterology department. The vomitus collecting device capable of preventing odor for the gastroenterology department is convenient to use, can collect vomituses of a patient, can shield the collected vomituses and facilitates recovery of the patient. In order to solve the technical problem, the vomitus collecting device capable of preventing odor for the gastroenterology department comprises a box and the like, wherein a lifting device is arranged in the middle of the inner bottom of the box; a collecting device is arranged in the box and is positioned on the outer side of the lifting device; a collecting component of the collecting device is connected with a lifting component of the lifting device; and a through hole is transversely formed in the middle of the top of the box. The vomitus collecting device capable of preventing odor for the gastroenterology department is convenient to use, can collect the vomituses of the patient, can shield the collected vomituses to stop odor from spreading, and facilitates recovery of the patient.

The invention discloses an instant microelement tracer for oil fields and a preparation method thereof. Specifically, it consists of the following components according to mass percentage: 60-80% of rare earth element complex, 16-20% of effervescent agent %, microporous agent 2-10%, disintegrant 2-10%. The instant granular trace element tracer of the present invention is simple in composition, convenient to prepare, and low in cost; the granular structure makes it difficult to drift with the wind during use; the medicament of the present invention has a microporous structure and is easily dispersed in water. Accompanied by an effervescent agent, it releases gas inside, can be dissolved without stirring and has a fast dissolution rate, and has the characteristics of being easy to use in special environments such as on offshore platforms.

The invention discloses a semantically-driven camera positioning and map reconstruction method, and belongs to the technical field of computer vision. The method comprises the following steps: firstly, performing semantic segmentation on feature points of a current frame image; matching all the feature points in the current frame and the key frame by adopting a similar matching method according tothe similarity and the semantic category to obtain a matching pair; initializing the posture of the camera through all matching in the current frame and the key frame; updating the feature point matching pairs by adopting a three-dimensional projection method in combination with semantic judgment; updating all the feature point matching pairs by utilizing attitude minimization; and finally, constructing a three-dimensional map by utilizing the camera attitude. The invention further discloses a semantic-driven camera positioning and map reconstruction system. According to the technical schemeprovided by the invention, not only is a plurality of processing performed in a camera positioning stage, but also point cloud constraint is performed in a reconstruction stage, so that semantic segmentation is more tightly combined with a camera positioning and reconstruction system, and a more accurate positioning result and a more perfect reconstruction effect are obtained.

The invention provides a submerged plant modularized growth bed and a method for recovering growth of underwater submerged plants. The submerged plant modularized growth bed comprises suspended solids, planting layers, plant layers, a growth substrate layer, a bearing layer and balance weight facilities, the submerged plant modularized growth beds are mutually connected to form an entire piece, micropores are formed in the bearing layer so that roots of the plants can penetrate through, the growth substrate layer adopts planting soil, the periphery of the planting layer is fixedly connected with the periphery of the bearing layer, the planting layers and the bearing layer wrap the growth substrate layer, the suspended solids are fixedly arranged around the submerged plant modularized growth bed, each suspended solid is hollow and is filled with air, and the balance weights are fixedly arranged at the lower end portion of the suspended solids to keep the depth of the modularized growth bed suspending on the water surface. The submerged plant modularized growth bed is reasonable in design, compact in structure, simple to manufacture, low in cost, simple to operate and convenient to manage, and the submerged plant modularized growth bed is degraded along with the growth of the underwater submerged plants, is free of pollution, protects the environment, is wide in application range, is widely popularized conveniently, and is favorable for recovery of the underwater submerged plants in different water areas.

The invention provides a swimming and travelling hybrid bionic cutter point leg and all-directional wheel combined underwater operation robot which comprises a frame, a floating body module, a hanging bracket, a control sealed cabin, a movement assembly, a sensing detection assembly, a visual positioning device and an operation expansion module. The floating body module, the hanging bracket, the control sealed cabin, the movement assembly, the sensing detection module, the visual positioning device and the operation expansion module are all mounted on the frame, and the gravity center of the underground operation robot is located under the buoyancy center. By adoption of the swimming and travelling hybrid bionic cutter point leg and all-directional wheel combined underwater operation robot, the underwater operation robot can adapt to the operation requirements of working faces of different categories and different postures and the requirements of all-directional maneuvering and the obstacle crossing ability on the different working faces, and therefore technical support is provided for the underwater operation robot to complete all kinds of underwater operation tasks.

The invention discloses a device and method for manufacturing a non-woven fabric by mixing a melt-blown subject as a carrier and short cut fibers. According to key points of the technical scheme, the non-woven fabric comprises a melt-blown device and a feeding device. The melt-blown device comprises a traction air flue and a spinneret plate located at one end of the traction air flue. The traction air flue is located on one side close to the feeding device, the feeding device comprises a sealed storage tank, one end of the sealed storage tank close to the spinneret plate is provided with a feeding port, a damping device is arranged at the position of the feeding port, and the feeding device further comprises a pressurization device which pushes ultra short fibers to flow to the feeding port, so that the ultra short fibers overcome resistance of the damping device to be squeezed out of the sealed storage tank. The device achieves the effects that product process requirements are met, the working environment can be ensured, and the cost is low.

The invention relates to acidic etching solution not generating chlorine and a catalyst of the acidic etching solution. The solution comprises mother solution, son solution and catalyst, wherein the mother solution consists of copper chloride solution, chloride ions and an acid group, the content of copper in the copper chloride solution is between 80 and 180 g / L, the content of the acid group is between 0.3 and 5.0 N, the sources of the chloride ions are hydrochloric acid or salt of various kinds of hydrochloric acid, and the content of the chloride ions is between 160 and 330 g / L; the son solution consists of chloride ions and an acid group, the content of the acid group is between 0.3 and 6.0 N, the sources of the chloride ions are hydrochloric acid or salt of various kinds of hydrochloric acid, and the content of the chloride ions is between 160 and 330 g / L; and the catalyst has the complexing action on monovalent copper ions and bivalent copper ions in the acidic etching solution, or can be used for the generation of stable coordination compounds, can be used for regulating oxidation-reduction potentials in a reaction A without the generation of chlorine.

The invention discloses a course information collection system. A CMOS (Complementary Metal Oxide Semiconductor) image sensor is adopted; a common six-degree-of-freedom mirco-electro-mechanical system gyroscope is combined; technologies such as image identification, plane transformation, pattern matching and fusion operation are adopted; course parameters of an unmanned aerial vehicle are calculated in real time; aiming at a small unmanned aerial vehicle flying at a low altitude and indoors, an autonomous course control solution with high navigation accuracy, high integration level and low cost is realized; the defects that signals can be shielded by objects during satellite navigation and signals can be easily affected by electromagnetic interference, signal drift and the like during inertial navigation can be overcome.

The invention discloses a super junction collector region SiGe heterojunction bipolar transistor. According to the transistor, a super junction collector region structure where n-type semiconductor columns and p-type semiconductor columns are alternately arrayed is adopted; a transverse electric field is introduced, collector region electric field distribution is improved, and then the breakdown voltage of the device is improved. According to a base region Ge component, the staircase distribution structure where gradual increase occurs from the side of an emitter junction to the side of a collector junction is adopted; a minority carrier acceleration electric field is introduced, the base region transit time is effectively shortened, and then the characteristic frequency of the device is improved. The current gain of the device and the temperature sensitivity of the characteristic frequency are improved, drift of a static working point of the device is effectively avoided, and stable work of the device is facilitated. Compared with a conventional power heterojunction bipolar transistor, the super junction collector region SiGe heterojunction bipolar transistor has the advantages that the transistor has the high breakdown voltage characteristic and the excellent frequency characteristic, the static working point of the device can not easily deviate during working and can not easily drift along with the change of the working temperature, and stable work of the device in the field of sub-terahertz power application can be achieved.

The invention discloses a differential absorption laser radar ozone space-time distribution day and night automatic detection device based on double Raman tube light source. The device comprises a laser transmitting unit, an optical receiving unit, a signal collecting unit and a signal analyzing unit, wherein the laser transmitting unit adopts D2 and H2 double Raman tube light source systems; the laser transmitting unit is used for transmitting laser of 266nm, 289nm, 299nm and 316nm simultaneously; the laser is received by the optical receiving unit; optical signals, which are transmitted by the optical receiving unit, are converted to digital signals through the signal collection unit, stored in an industrial personal computer and analyzed by the signal analyzing unit in real time. Echo signals of four channels are detected simultaneously; the requirements for detection precisions of different heights of a lower layer, a middle layer and a high layer of ozone in a convection layer can be taken into account. The device is capable of observing the ozone three-dimensional distribution of the convection layer around the clock, high in time resolution ratio and space resolution ratio and high in detection precision.

The invention belongs to the field of coal flame-retardant dust suppressants. The invention specifically discloses a nitrogen-phosphorus-silicon synergistic coal flame-retardant dust suppressant and apreparation method thereof. The nitrogen-phosphorus-silicon synergistic coal flame-retardant dust suppressant comprise the following components: 0.08 to 0.12 part of a phosphorus-based flame retardant, 0.10 to 0.14 part of a nitrogen-containing silane coupling agent, 0.01 to 0.05 part of an aldehyde compound, 100.0 to 200.0 parts of a solvent, 0.18 to 0.36 part of a silicon flame retardant, 0.1-0.4 part of a pH regulator, 83.0 to 125.0 parts of deionized water, 57.0 to 95.0 parts of alcohol, 1.0 to 2.0 parts of a natural polymer, 10.0 to 20.0 parts of a monomer, 4.0 to 8.0 parts of a pH buffer agent, 0.1 to 0.4 part of an initiator, 0.02 to 0.08 part of a cross-linking agent, 0.2 to 0.4 part of a surfactant and 0.2 to 1.0 part of a plasticizer. The preparation method comprises the following steps: grafting a nitrogen-containing silane coupling agent onto phosphorus flame retardant molecules by using an aldehyde compound, then hydrolyzing the silicon-based flame retardant, carrying outdehydration reaction between hydroxyl groups on the hydrolyzed silicon-based flame retardant and surface hydroxyl groups on the silicon-based flame retardant to obtain a nitrogen-phosphorus-silicon synergistic flame retardant, and finally organically combining the nitrogen-phosphorus-silicon synergistic flame retardant with dust suppression components such as a natural polymer, a monomer, glycerol and a surfactant in the same system through a polymer free radical polymerization reaction, so that the flame retardant has flame retardance and dust suppression properties.

The invention provides a light diffusion master batch and a preparation method thereof. The light diffusion master batch is mainly prepared from the following raw materials in percentage by weight: 78-88 percent of an optical transparent polymer, 10-20 percent of a light diffusion agent, 0.5-2 percent of a liquid adsorbent and 0.1-0.3 percent of a stabilizer. The light diffusion agent is added into the optical transparent polymer matrix so as to obtain the high-concentration master batch, and the liquid adsorbent is adopted, so that the light diffusion agent can be uniformly adsorbed to the optical transparent polymer, and the aim of uniformly distributing the light diffusion agent on the surface of the optical transparent polymer particles is achieved. Meanwhile, with the adoption of the liquid adsorbent, the surface of the light diffusion agent is full of the liquid adsorbent in an adhered mode, and the light diffusion agent is difficult to drift away in the subsequent operation.

A low differential voltage output circuit comprises a voltage generator and a differential output unit. The voltage generator comproses a first PMOS transistor, a first amplifier circuit, a unity gain stage, a first and s second NMOS transistors. The differential output unit comprises a first controlled current source, a second controlled current source, a common mode voltage circuit and a first, a second, a third and a fourth switches. The invention directly provides the common mode voltage to the differential output unit by the voltage generator, overcomes channel modulation effect of the MOS transistor and increases driving force of the common mode voltage, so the reactive time of the invention changes small, the output current of the differential output unit is in proportion with the reference current received by the voltage generator, and only one voltage generator can meanwhile connect with a plurality of differential output units in series.

The invention discloses a fire-extinguishing bomb thrown through an unmanned aerial vehicle. The fire-extinguishing bomb comprises a shell, a fire-extinguishing agent, a hanging mechanism and a starting system; the starting system comprises a self-inflammation unit, a throwing delayer, an infrared detector and a starter, the fire-extinguishing agent is placed in the shell, and the starting system is installed on the shell; and the throwing delayer penetrates through the shell, the upper end of the throwing delayer is connected with the hanging mechanism which is a lifting ring, and the lower end of the throwing delayer is connected with the starter. The fire-extinguishing bomb thrown through the unmanned aerial vehicle is reasonable in design, simple in structure, good in exploding orientation of the fire-extinguishing bomb, little in detonating energy and capable of achieving umbrella type covering; and throwing can be conducted towards a fire scene by diversified means, fire fighting is more convenient to be conducted for a site, where people cannot easily enter, with a high mountain and a thick wood, and meanwhile safety of a rescue person is protected.

The invention relates to a novel dual-channel peritoneal dialysis catheter suitable for operation under an endoscope. The peritoneal dialysis catheter comprises a peritoneal dialysis catheter body, the peritoneal dialysis catheter body comprises an external abdominal section, a gooseneck section and an abdominal cavity section, dacron buckles are disposed at two ends of the gooseneck section respectively, the abdominal cavity section comprises a first channel pipe and a second channel pipe, the first channel pipe and the second channel pipe are communicated with the peritoneal dialysis catheter body, drainage holes are formed in the first channel pipe and the second channel pipe, and the drainage holes are uniformly distributed. The novel dual-channel peritoneal dialysis catheter suitable for operation under the endoscope has the advantages that the dual-channel structural design is applied, catheter floating and blocking is not prone to occur, and the service life is long; more drainage holes are formed in the peritoneal dialysis catheter than those of single channel, the abdominal permeability is good, liquid replacing time is reduced, removing capacity of metabolic waste is increased, the efficiency is high, the peritoneal dialysis catheter is put under the endoscope, the positioning is accurate, operations are safe, reliable and low in price, and the cut part is small.

The invention discloses a measure method applied to a circuit of a resistor-type moisture measure sensor, and relates to the field of measuring of grain moisture. The circuit comprises a power supply unit connected with a CPU acquisition processing unit and a voltage-raising voltage-stabilizing unit; the voltage-raising voltage-stabilizing unit is connected with an electron change-over switch respectively via a first standard resistor, a second standard resistor and a third current-limiting resistor; the electron change-over switch is connected with the CPU acquisition processing unit, an operational amplifier and a second triode; the operational amplifier is connected with a first triode and the second triode, and also the output terminal of the operational amplifier is connected with a reverse-direction input terminal via a capacitor; the voltage-raising voltage-stabilizing unit is connected with the second triode via the first triode; and the voltage-raising voltage-stabilizing unit is connected with an A / D acquisition module via a transition linearity correction amplification processing unit. When moisture in grains is measured, the measuring speed is fast, the measuring scope is relatively wide, and also the measuring stability is relatively high. The measure method is relatively wide in application scope.

The invention relates to an herbicide, in particular to an herbicide composition containing pyriminobac methyl, pyribenzoxim and cyhalofop-butyl, a preparation and an appliance thereof. The herbicide composition containing the pyriminobac methyl, the pyribenzoxim and the cyhalofop-butyl comprises three effective components which are the pyriminobac methyl, the pyribenzoxim and the cyhalofop-butyl, wherein the quality radio of the pyriminobac methyl, the pyribenzoxim and the cyhalofop-butyl is 0.1-60:0.1-60:0.1-70. The pyriminobac methyl, the pyribenzoxim and the cyhalofop-butyl do not have cross resistance, can effectively enhance weeding effect of the herbicide by being mixed and matched, enlarge control spectrums of the herbicide, widely kill various weeds containing graminaceous, cyperaceae and broad leaves, improve fast-acting property and durable effect, reduce times for spraying in a growth period, and have greatly important significance for delaying drug resistance. Simultaneously, because the working concentration of single insecticide reduces, the occurrence risk of pesticide hazard is greatly reduced. The herbicide composition containing pyriminobac methyl, pyribenzoxim and cyhalofop-butyl, the preparation and the appliance thereof meet the demands that a drug is used for many times in agricultural production, the use times of the drug are reduced and the risk of the pesticide hazard is reduced.

The invention provides a high- and low-temperature switching test module, and the high- and low-temperature switching test module comprises an inner cavity, a test carrier plate, a plurality of test seats, an outer cavity, a heat exchange unit and a control unit. The inner cavity is provided with at least one air inlet channel and at least one air exhaust channel, the test carrier plate is disposed in the inner cavity, and the plurality of test seats are disposed on the test carrier plate and are used for placing of a plurality of chips to be tested; the outer cavity covers the upper, lower and side of the inner cavity, is provided with at least one air inlet channel and at least one air exhaust channel, and is used to heat or cool the inner cavity; the heat exchange unit is separately connected with the at least one air inlet channel of the inner cavity and the at least one air inlet channel of the outer cavity; the control unit is electrically connected to the heat exchange unit; andthe inner cavity is provided with a flow guiding cover, and the air guiding cover is provided with a plurality of flow guiding holes and is used to guide a gas provided by the heat exchange unit to heat or cool the test carrier plate. Therefore, high- and low-temperature test time of the chips to be tested can be greatly shortened, and production efficiency can be increased.

The polishing equipment comprises an equipment main body, wherein the outer surface of the equipment main body is connected with an observation window through a hinge, one side of the top of the equipment main body is respectively provided with a fan and a dust collection box, the air outlet end of the fan is connected with a dust extraction pipe extending to the inside of the equipment main body,and the aluminum section works in a sealed environment during polishing. debris and dust are not easy to splash When working, the fan can draw dust into the dust collection box, the illuminating lampilluminates the polishing component, workers can clearly check the polishing condition through the observation window, debris with larger particles falls into the dust collection groove, and the workers regularly clean the dust collection groove and the dust collection box, so that the cleaning times of the workers are reduced, the dust removal effect is improved, and the damage of the debris tothe eyes of the workers can be prevented.

The invention relates to granule screening equipment. The granule screening equipment comprises a frame, a grading machine, a feeding device, a protecting device, a guiding device and a collecting device, wherein the grading machine comprises a housing, two block objects and six graded adjustment cutting edges; the feeding device comprises a vibrating device, a feeding pipe and a feeding funnel; the protecting device comprises a frame body and a porous ceramic film which is arranged in the frame body; the guiding device comprises a coarse powder guide tube, a fine powder guide tube, a middle powder guide tube, an ultra-fine powder guide tube, a submicron powder guide tube and a micropowder guide tube; the collecting device comprises an air compressor, a main gas flow pipeline, six branch gas flow pipelines, six speed governing valves and six dust collectors. The granule screening equipment solves the problem that an impurity-containing ultra-fine powder jet flow is hard to purify and grade and the grading granularity is hard to control, and has the technical effects that a raw material is few in residue in a feeding barrel, the jet flow is relatively high in grading efficiency, dust granules are unlikely to drift away to air and the like.

The invention discloses a preparation method of a thin-film transistor. The method comprises the following steps: (S110) sequentially forming a buffer layer, an amorphous silicon layer and a first gate insulation layer on the surface of a substrate; (S120) converting the amorphous silicon layer into a polycrystalline silicon layer; (S130) carrying out a composition process on the first gate insulation layer and the polycrystalline silicon layer to form a polycrystalline silicon island; (S140) carrying out ion implantation on the polycrystalline silicon layer through the first gate insulation layer to form channel doping; (S150) forming a second gate insulation layer on the first gate insulation layer; and (S160) forming a gate, an interlayer insulating film, a source and a drain above the second gate insulation layer. According to the preparation method of the thin-film transistor, the contact interface of the polycrystalline silicon layer and the first gate insulation layer can be tight; pollution to the polycrystalline silicon layer caused by an external environment or subsequent procedures is effectively avoided; the channel threshold voltage of the obtained thin-film transistor cannot easily drift; and the electrical property is relatively stable.

The invention relates to herbicide, in particular to a weeding composition containing pyriminobac-methyl, penoxsulam and metamifop and a preparation and application thereof. The weeding composition containing the pyriminobac-methyl, the penoxsulam and the metamifop contains effective constituents of the pyriminobac-methyl, the penoxsulam and the metamifop, wherein the mass ratio of the pyriminobac-methyl to the penoxsulam to the metamifop is (0.1-50);(0.1-50):(0.1-70). The three effective constituents have no cross resistance. By mixing the effective constituents, the effect of weeding can be effectively strengthened, the prevention and treatment spectrum can be enlarged, a plurality of weeds including poaceae, cyperaceae and broad leaf weeds can be killed widely, the fast-acting property and the persistence can be improved, the times for spraying in a growth period are reduced, and the pyriminobac-methyl, the penoxsulam and the metamifop are very important for the delay of generation of medicament resistance. Risks of occurrence of phytotoxicity are reduced greatly due to the fact that the applied concentration of a single medicament is reduced. The requirements that one medicament has multiple purposes in agricultural production, the times for spraying is reduced, and the risks of the phytotoxicity are reduced are met.

The invention discloses a gas-fired boiler nitrogen-insulating combustion and CO2 capture and utilization process. A system required by the process comprises a natural gas supply device, a water electrolysis hydrogen production device, an oxygen preparation device, a nitrogen compressor, a carbon-based nitrogen-insulating gas mixer, a gas heat exchanger, a gas-fired boiler, a chimney, a flue gas dehydration device, an air blower, a CO2 recovery device and a CO2 compressor. The method has excellent performance in the aspects of yield increase, energy conservation and emission reduction, the unit consumption of per ton of steam and natural gas can be reduced by 10% or above, the yield can be improved by 10% or above, the flue gas emission is reduced, and ultralow emission of NOx is achieved.

The invention relates to a jet spray-head for a sprayer, comprising a spray-head body. The spray-head body is connected with a joint by a locking cap; a jet piece is arranged in the spray-head body; a jet hole is arranged in the jet piece; the header of the spray-head body is connected with a spray-head cap; a nozzle is installed, and the nozzle hole is arranged on the nozzle. The inner cavity of the spray-head body comprises a big intake chamber and a small liquid-gas mixing chamber; air intake holes are arranged in the intake chamber; the cross-section of the intake chamber is greater than the liquid-gas mixing chamber; a water diversion head is arranged in the liquid-gas mixing chamber; the aperture of the nozzle hole in the nozzle is greater than the jet hole arranged in the jet piece. The water sprayed out of the nozzle is in the form of fog drops bearing air bubbles; because air bubbles are contained in the fog drops, the volume is increased and drift becomes difficult; when the fog drops arrive at the surface of the crops, the fog drops containing air bubbles impinge on the surface of crops and break into fine fog drops; the fine fog drops have strong adhesive force and sound insecticidal effect is achieved.

The invention relates to a welding method of a stainless steel sheet. A welding gun is controlled to adopt a straight line reciprocating type welding operation track, the welding quality of an electric arc is ensured through improving the moving process of the welding operation on the premise of determining a welding parameter, and then the purpose for reducing welding deformation is achieved. The welding gun is controlled to adopt the straight line reciprocating type welding operation along the angular butt welding seam of the stainless steel sheet in the method. A plurality of contiguous reciprocating motion periods are comprised in the whole straight line reciprocating type welding operation process, and the same welding speed is adopted in each motion period. The welding mode of firstly welding a long distance forwards and then repeatedly welding a short distance backwards is adopted in each motion period. The electric arch is difficult to drift and easy to fuse at a welding point through the straight line reciprocating type welding operation, the welding seam has small weld reinforcement, the welding speed can be accordingly enhanced so that the phenomenon of overburning the tissues of the welding seam is avoided, and the welding quality of the electric arc is obviously enhanced.

The invention discloses a purification process of 1,2-benzisothiazolin-3-ketone. The method comprises the following steps of (1) mixing a coarse product of 1,2-benzisothiazolin-3-ketone, an aprotic solvent, an auxiliary reaction type solvent and solid metal salt; then, raising the temperature to 60 to 120 DEG C; performing heat insulation for 2 hours to form a mixed solution with solid undissolved substance impurities; (2) controlling the temperature of the mixed solution; filtering the solid undissolved substance impurities, and remaining filter liquid; (3) lowering the temperature of the filter liquid to 10 DEG C to 20 DEG C to form materials with crystals; (4) performing centrifugal filtration on the materials to obtain flaky 1,2-benzisothiazolin-3-ketone crystals; performing vacuum drying to obtain the 1,2-benzisothiazolin-3-ketone product. The method has the advantages that the product obtained through crystallization is in flaky and colorless solid with metal luster; the specific gravity is great; drifting cannot easily occur; operators cannot easily generate allergy.

The invention discloses application of a compound used as a catalyst in preparing an acidic etching liquid which does not generate chlorine. The compound has a complexation effect on monovalent or bivalent copper ions in the acidic etching liquid or can generate a stable complex. According to the Nernst equation, the redox potential of the monovalent copper ions converted to the bivalent copper ions after complexation or coordination is reduced till the redox potential is less than the reduction potential of oxygen in aqueous liquor, so that balance of a reaction A can be further smoothly carried out toward a direction of generating the bivalent copper ions even in an acidic high chlorine environment, wherein the reaction A is as shown in the specification.

The invention discloses a manual pesticide machine for self-help drug mixing, comprising: a pesticide machine body, a drug mixing mechanism and an anti-poisoning mechanism; One end of the trachea is connected to the manual air pump, the blowing tube is located in the pesticide machine body and at the bottom of the pesticide machine body, the top of the connecting rod is hinged at the bottom of the manual air pump; the anti-poisoning mechanism includes a transmission shaft, a power box and a fan , there are two fans, and they are installed obliquely on the left and right sides of the top of the pesticide machine body. The invention utilizes a drug mixing mechanism to generate bubbling in the pesticide machine by repeatedly swinging the pressure rod after the drug is mixed, and uses the bubbling to stir and mix the mixed solution to ensure that the pesticide is evenly mixed. It is not easy to drift to the vicinity of the human face, thereby effectively reducing the amount of inhaled pesticides and ensuring personal safety.

The invention belongs to the field of coal flame-retardant dust suppressants and particularly discloses a silicon-phosphorus synergistic coal flame-retardant dust suppressant and a preparation methodthereof. The silicon-phosphorus synergistic coal flame-retardant dust suppressant comprise the following components, by mass: 0.10 to 0.30 part of a phosphorus-based flame retardant, 0.15 to 0.30 partof a silane coupling agent, 0.008 to 0.018 part of a catalyst, 80.0 to 160.0 parts of a solvent, 0.10 to 0.40 part of a silicon flame retardant, 0.1 to 0.4 part of a pH regulator, 83.0 to 125.0 partsof deionized water, 57.0 to 95.0 parts of an alcohol compound, 1.0 to 2.0 parts of a natural polymer, 10.0 to 20.0 parts of a monomer, 4.0 to 8.0 parts of a pH buffer agent, 0.1 to 0.4 part of an initiator, 0.02 to 0.08 part of a cross-linking agent, 0.2 to 0.4 part of a surfactant and 0.2 to 1.0 part of a plasticizer. The silicon and phosphorus elements are introduced into the flame-retardant dust suppressant and the flame-retardant dust suppressant is an efficient silicon-phosphorus synergistic flame-retardant system to overcome the defects of lower flame-retardant level and small limit oxygen index of a single flame retardant, and has excellent flame retardancy. A polymer film formed after spraying can prevent pulverized coal from being blown away, and coal dust pollution is reduced; and the effect of isolating oxygen can be achieved, so that spontaneous combustion of coal is prevented.