630results about How to "Reduce deposition" patented technology

The invention provides an Al-Mg alloy negative electrode current collector, a preparation method thereof and a negative-electrode-free sodium metal battery, and relates to the field of batteries. The preparation method of the Al-Mg alloy negative electrode current collector comprises the following steps: sputtering magnesium on the surface of an aluminum foil by adopting a magnetron sputtering mode, and forming a magnesium coating on the aluminum foil; and calcining the aluminum foil with the magnesium plating layer to obtain the Al-Mg alloy negative electrode current collector, and the Al-Mg alloy negative electrode current collector comprises an aluminum substrate layer and an Al-Mg alloy layer located on the aluminum substrate layer. According to the present invention, the Al-Mg alloy with characteristics of high sodium affinity and stable three-dimensional structure is introduced into the negative electrode current collector so as to induce the uniform deposition of sodium, inhibit the growth of sodium dendrites, reduce the loss of active sodium, and prolong the cycle life of the battery; the negative electrode current collector can be used in a sodium metal battery without a negative electrode. In addition, the method has the advantages of being easy to operate and low in raw material cost, and large-scale application and popularization are facilitated.

The invention discloses a laser cutting device for steel structure production and machining, and relates to the technical field of steel structure production and machining.The laser cutting device for steel structure production and machining comprises a cutting table, a sliding groove is fixedly formed in the surface of the cutting table, and a cutting machine is slidably mounted on the inner wall of the sliding groove; the fixing device comprises a sliding plate, a hydraulic cylinder, a first clamping plate, a second clamping plate, a rotating shaft, a first tooth block, a second tooth block, a third tooth block, a first inclined block, a fixing plate, a sliding plate, a second inclined block, a first telescopic elastic rod, a sliding plate, a second inclined block, a second telescopic elastic rod, a linkage block, a limiting block and a rotating plate. And then the sliding plate moves to clamp the materials, so that the situation that the cutting precision is poor due to material shaking is further avoided during cutting work, automatic adjustment is conducted according to the shape of the steel structure, and the stability of the workpiece in the cutting process is guaranteed.

The invention is suitable for the field of drip irrigation equipment, and provides a large-area uniform-control and high-blocking-resistance irrigation emitter for drip irrigation. The irrigation emitter comprises an irrigation emitter shell; the water inlet part is embedded in the central part of the irrigation emitter shell; and the runner part is of a tooth-shaped reciprocating structure. According to the large-area uniform-control and high-blocking-resistance irrigation emitter for drip irrigation, firstly, the whole water flow enters the flow channel units through the first straight line sections and impacts on the vertical upstream face, and part of the water flow impacting the topmost part of the upstream face flows into the next flow channel unit through the first oblique line sections and the tooth fillet radiuses; at the moment, the water flow generates maximum energy dissipation at the tooth fillet radius, namely the tooth tip, so that the turbulent kinetic energy of the water flow in the flow channel unit is effectively improved, the maximum laying distance of the drip irrigation tape is greatly prolonged, and the blank of lack of ultra-long-distance laying of the irrigation emitter and the drip irrigation tape in China is filled.

The invention discloses application of an AXL inhibitor in preparation of a medicine for treating heart failure, and relates to the field of pharmacy. The invention provides application of an AXL inhibitor in a medicine for treating heart failure. The AXL inhibitor can remarkably inhibit abnormal activation of fibroblasts and can remarkably improve the heart function of a mouse with heart failure.

The invention relates to the technical field of carbon monoxide oxidation catalysts, and discloses a sulfur-tolerant noble metal-based CO oxidation catalyst as well as a preparation method and application thereof. The preparation method of the catalyst comprises the following steps: dipping a carrier in an aqueous solution containing a noble metal precursor and an auxiliary agent precursor, and then drying and roasting to obtain a catalyst matrix; carrying out pre-reduction treatment on the catalyst matrix in a hydrogen-containing atmosphere to obtain a catalyst intermediate; carrying out induced activation on the catalyst intermediate in an atmosphere containing CO and H2S; wherein the carrier is at least one of titanium dioxide, cerium dioxide, aluminum oxide and zirconium dioxide, and the metal element in the auxiliary agent precursor is at least one of Fe, Co and Ni. The catalyst prepared by the method provided by the invention can realize the high-selectivity oxidation process of H2S species, inhibits the adsorption of S species and the formation process of sulfate, and realizes the high-conversion-rate oxidation reaction of carbon monoxide in the presence of H2S.

The invention discloses a liver-targeting drug liposome and application thereof, and relates to the field of drug delivery, cholate and mannose are used for respectively modifying phospholipid molecules DSPE-PEG2000, two raw materials DSPE-PEG2000-CA and DSPE-PEG2000-MAN composed of the liposome are synthesized, and then the liposome is prepared into the liver-targeting drug liposome. The liposome with liver targeting property is obtained from the liposome, cholesterol, DSPC, DC-cholesterol and a water-soluble therapeutic drug according to a certain proportion, the liposome has relatively high cell safety and liver targeting property, and the therapeutic effect of the corresponding drug can be remarkably improved after the drug is embedded.

The invention discloses a multifunctional composite hydrophobic membrane and a preparation method thereof, in the hydrophobic membrane, nano silicon dioxide, hydroxyl multi-walled carbon nanotubes and perfluorooctyl ethyl acrylate are polymerized to obtain a modified composite material, the modified composite material is added into a polyvinylidene fluoride-hexafluoropropylene copolymer, fibers are formed through an electrostatic spinning method, the fibers are deposited on a polyester net base lining, and the multifunctional composite hydrophobic membrane is prepared. Nano-silica and hydroxyl multi-walled carbon nanotubes are modified, agglomeration is effectively avoided, the hydrophobic membrane has good mechanical strength and toughness, and microcosmic multi-dimensional roughness of the surface of the membrane can be achieved by introducing an inorganic-organic nano hybrid material. Fluorine atoms in a perfluorooctyl ethyl acrylate structure have relatively low surface energy, so that the surface energy of the film can be remarkably reduced, the surface of the film has low surface energy and a rough structure, and the film is high in hydrophobicity and good in chemical stability.

The invention discloses a tetrapeptide LILP with uric acid reducing activity and application thereof, and belongs to the technical field of biological medicine. The amino acid sequence of the tetrapeptide LILP is Leuu-Ile-Leu-Pro, and the amino acid sequence of the tetrapeptide LILP is shown in the specification. The invention discloses that the tetrapeptide LILP has uric acid reducing activity for the first time, and uric acid generation can be reduced by reducing the activity of xanthine oxidase in the liver; uric acid discharge can be increased by reducing kidney uric acid reabsorption. The invention provides a multi-target active substance for reducing uric acid, which can be applied to preparation of medicines for preventing or treating hyperuricemia or preparation of health-care foods for assisting in reducing the level of uric acid, and has a good application prospect.

The invention discloses a tripeptide LAF with uric acid reducing activity and application thereof, and belongs to the technical field of biological medicine. The amino acid sequence of the tripeptide LAF is Leu-Ala-Phe (Leu-Ala-Phe). The tripeptide LAF disclosed by the invention has uric acid reducing activity for the first time, and the generation of uric acid can be reduced by reducing the activity of xanthine oxidase in the liver; meanwhile, uric acid discharge is increased by reducing kidney uric acid reabsorption. The invention provides an active substance for reducing uric acid through multi-target action, and the active substance can be applied to preparation of medicines for preventing or treating hyperuricemia or preparation of foods for assisting in reducing the uric acid level, and has a good application prospect.

The invention discloses a micro-channel jet reactor. The micro-channel jet reactor comprises a sample introduction unit, a main mixing unit and a reaction unit which are sequentially communicated, the main mixing unit comprises a first inner pipe and a first outer pipe arranged outside the first inner pipe in a sleeving manner; a first annular space is formed between the first inner pipe and the first outer pipe; the sample introduction unit is communicated with the first inner pipe; a second sample inlet is formed in the first annular space, and a plurality of through holes are formed in the first inner pipe; the reaction unit comprises a second inner pipe and a second outer pipe arranged outside the second inner pipe in a sleeving manner; a second annular space is formed between the second inner pipe and the second outer pipe; the first inner pipe is communicated with the second inner pipe; during use, condensate is arranged in the second annular space. The reactor can effectively improve the mixing uniformity degree of reaction liquid, meanwhile, the reaction temperature is controlled, and the reaction rate and selectivity are ensured.

The invention belongs to the field of solid electrolytes, and relates to an argyrodite type solid electrolyte and a preparation method and application thereof, the molecular formula is Li < 5.5-x > P < 1-x > W < x > S < 4.5-3x > O < 3x > ClyBr < 1.5-y >, during preparation, raw materials are premixed according to a molar ratio, and ball milling is performed to obtain solid electrolyte powder; and tabletting the solid electrolyte powder to obtain an electrolyte sheet, and sintering to obtain the argyrodite type solid electrolyte. According to the multifunctional electrolyte disclosed by the invention, the ionic conductivity is improved, and meanwhile, the stability to air is relatively good.

The plate-type temperature adjusting equipment comprises a box body, a plate-type temperature adjuster and a scale wiping unit, the plate-type temperature regulator and the scale wiping unit are arranged in the box body, liquid is contained in the box body, and the plate-type temperature regulator is used for being immersed into the liquid to regulate the temperature of the liquid; the plate-type thermolator is provided with a plurality of plate-shaped fluid channels which are arranged side by side at intervals from front to back, a fluid inlet hole and a fluid outlet hole are formed in the front side and the rear side of each plate-shaped fluid channel respectively, and the fluid inlet holes and the fluid outlet holes are formed in the positions, close to the left side and the right side, of the plate-shaped fluid channels respectively. And a scale wiping unit is arranged in a gap between every two adjacent plate-shaped fluid channels, and the scale wiping units continuously do reciprocating motion in the gaps through a driving unit to disturb the side walls of the plate-shaped fluid channels, so that scaling is prevented. According to the plate type temperature adjusting equipment, the temperature of fluid is adjusted, and meanwhile impurities possibly causing crystallization and scaling are removed.

The invention relates to the technical field of reverse osmosis membrane assembly cleaning, and particularly discloses a cleaning method of a reverse osmosis membrane. The cleaning method of the reverse osmosis membrane comprises the following steps: (1) washing the reverse osmosis membrane with product water of a reverse osmosis membrane system until concentrated water in the membrane is fully replaced with the product water; (2) immersing the cleaned reverse osmosis membrane into an acidic cleaning solution, and controlling the pH value to be 2-2.5; (3) washing the reverse osmosis membrane with product water of a reverse osmosis membrane system until concentrated water in the membrane is fully replaced with the product water; (4) immersing the cleaned reverse osmosis membrane into an alkaline cleaning solution, and controlling the pH value to be 11.5-12; and (5) repeating the steps (1)-(4), and flushing the reverse osmosis membrane with the product water of the reverse osmosis membrane system until the concentrated water in the membrane is fully replaced with the product water. The prepared reverse osmosis membrane has good cleaning efficiency, the permeation flux and the desalination rate of the reverse osmosis membrane are recovered, and the service life of the reverse osmosis membrane is prolonged.

The invention discloses application of ADAM10 or ADAM17 serving as a target spot in preparation of a medicine for preventing / treating membranous nephropathy and application of an ADAM10 or ADAM17 inhibitor in preparation of the medicine for preventing / treating membranous nephropathy. The invention finds that ADAMs mediate the deposition process of immune complexes of autoantigens such as PLA2R1 of membranous nephropathy, and enzyme digestion of podocytes to transmembrane autoantigen proteins such as PLA2R can be inhibited by performing targeted intervention on the activity of ADAMs, especially the activity of ADAM10 and ADAM17, so that immune complexes deposited in glomerulus are reduced, the podocyte damage of membranous nephropathy is improved, and the therapeutic effect is achieved.

The invention discloses a valve device, a semiconductor device processing device and a semiconductor device processing method. The output end of the valve equipment is connected with the reaction cavity, the valve equipment comprises a valve body, an air channel is formed in the valve body, and an air outlet is formed in the inner wall of the valve body and used for outputting air; the valve plate is movably arranged in the valve body, and the opening degree of the valve equipment is adjusted by adjusting the pose of the valve plate; the controller is configured to respond to a process flow or a cleaning flow in the reaction cavity and control the valve plate to form an opening degree, so that process gas or clean gas enters the reaction cavity; and inert gas is introduced into the gas channel, so that the inert gas surrounds the inner wall to form a gas curtain, and the inner wall is isolated from the process gas or the clean gas. Deposition of process byproducts on the inner wall of the valve body and the valve plate can be reduced, and compact and difficult-to-clean sediments are prevented from being formed in the valve.

The invention discloses a preparation method and application of a catalyst for preparing synthesis gas through methane dry reforming, and belongs to the technical field of preparation and application of a catalyst for methane dry reforming. The catalyst is composed of carriers (SiO2, Al2O3, MgO and the like), active metals (Ni, Co and the like), oxide assistants (CeO2, La2O3, ZrO2, MgO, CaO and the like) and alkali metal assistants (Na, K and the like). The oxide auxiliary agent is uniformly dispersed on the surface of the carrier in a nano island structure; the active metal component falls on the surface of the carrier modified by the oxide nano island in a nano particle form. The preparation method of the catalyst is simple, high conversion rates of methane and carbon dioxide, high hydrogen-carbon ratio (H2 / CO) and good catalytic stability can be achieved, in a 2000-hour long-period dry reforming reaction at 800 DEG C, the conversion rates of the carbon dioxide and the methane are up to about 96% and 92%, the hydrogen-carbon ratio is about 0.96, and obvious inactivation does not occur.

The utility model relates to a PCVD (plasma chemical vapor deposition) process uniform deposition device which comprises rotary sealing chucks coaxially and correspondingly arranged on two sides of a lathe bed, the rotary sealing chucks on the two sides are connected with a synchronous rotary driving device, and a microwave resonant cavity is arranged between the two rotary sealing chucks. The two rotary sealing chucks comprise a gas inlet rotary sealing chuck and a gas exhaust rotary sealing chuck, the gas inlet rotary sealing chuck is communicated with a raw material gas source through a gas inlet pipe, and the gas exhaust rotary sealing chuck is communicated with a vacuum pump gas pumping system through a gas exhaust pipe. And the auxiliary exhaust pipe is communicated with the auxiliary vacuum pump air extractor through a tandem electric control valve. The axial uniformity of PCVD (plasma chemical vapor deposition) process deposition can be effectively improved by increasing intermittent air exhaust, so that the effective rod length of a deposition core rod and the quality of a deposition liner tube are improved.

The invention discloses application of a siRNA composition in preparation of a medicine for treating liver diseases and the medicine. The siRNA composition at least comprises PCBP2-siRNA and PD-L1-siRNA. The invention discovers that PCBP2-siRNA and PD-L1-siRNA can effectively reduce type I collagen deposition in a mouse hepatic fibrosis model induced by CCL4 for the first time. The result shows that the two siRNAs both have a potential anti-fibrosis effect. And when the PCBP2-siRNA and the PD-L1-siRNA are used in a combined manner, the inhibition effect of the PCBP2-siRNA and the PD-L1-siRNA on the type I collagen deposition is more obvious than that of the PCBP2-siRNA which is independently used with any siRNA. The result shows that the liver fibrosis degree can be more effectively relieved through combined application of the two siRNAs.

The invention discloses a source community sewage pollutant deposition-washing cooperative control method and system, and the method comprises the following steps: S1, discharging domestic sewage discharged by residents from an inspection well, and recognizing a pipeline operation mode according to a community resident drainage time period inputted by a remote control center; s2, performing different drainage control according to different time periods; s3, in the operation process of the system, monitoring and early warning the sediment height and methane gas in the sediment control pool 1 in real time; and an operator on duty of the remote control center timely and accurately performs mode switching treatment in the step S2 according to early warning signals transmitted by the ultrasonic mud level meter and the infrared gas detector, or adopts related operation and maintenance strategies for dredging treatment. According to the method and the system, the operation modes of the sediment control pool and the sewage pipeline in different drainage periods are set, so that the pollutant deposition of the pipeline of the source community is reduced and the collection efficiency of the domestic sewage pollutants is improved while the initial interception and precipitation function of the septic tank is exerted.

The invention relates to a self-cleaning module type gravity type net cage culture system which comprises a floating mat assembly, a floating mat assembly and a gravity type net cage culture system. The cage frame assembly comprises frames and floaters, each frame is arranged on two adjacent floating mat units, the two ends of each frame are connected with the two ends of the two adjacent floating mat units respectively, and the floaters are fixedly arranged below the frames; the plurality of oyster cages are hung on the frame and are used for culturing fresh oysters; the cleaning assembly comprises a mounting frame and cleaning mechanisms, the mounting frame is connected with the floating mat assembly, the mounting frame can swing relative to the floating mat assembly, the multiple cleaning mechanisms are arranged along the mounting frame at intervals, and each cleaning mechanism can make contact with at least two adjacent oyster cages; and / or each oyster cage is in contact with at least one cleaning mechanism. Compared with the prior art, the cleaning assembly cleans the oyster cage under the action of water flow and stormy waves, so that the time interval for cleaning the oyster cage on water is prolonged to 3-6 months.

The invention relates to an emulsifying and mixing device, in particular to an emulsifying device for preparing a defoaming agent. The technical problems that according to an existing emulsifying device, the shearing force of stirring equipment is inconvenient to adjust according to the state of raw materials, granular raw materials are prone to being accumulated on mixing blades, materials on the inner side wall of an emulsifying barrel are inconvenient to scrape off, and then the mixing and emulsifying effect is poor are solved. The emulsifying device for preparing the defoaming agent comprises a bottom frame, a fixing ring, an emulsifying barrel and the like, a fixing ring is mounted on the bottom frame, and an emulsifying barrel is mounted on the fixing ring. When raw materials are primarily mixed, the angles of the mixing blades are approximately parallel to the surfaces of the raw materials, so that the shearing force can be reduced, the raw materials can penetrate through the fixing holes, the area of the surfaces of the mixing blades directly impacted by the raw materials can be reduced, the shearing force is further reduced, and meanwhile, accumulation of the raw materials on the mixing blades is avoided; raw material deposition on the mixing blades is reduced, and uneven stirring caused by the fact that granular raw materials are attached to the mixing blades is avoided.

The invention discloses a tripeptide LFP with uric acid reducing activity and application thereof, and belongs to the technical field of biological medicine. The amino acid sequence of the tripeptide LFP is Leu-Phe-Pro. The tripeptide LFP disclosed by the invention has uric acid reducing activity for the first time, and the generation of uric acid can be reduced by reducing the activity of xanthine oxidase in the liver; meanwhile, uric acid discharge is increased by reducing kidney uric acid reabsorption. The invention provides a multi-target active substance for reducing uric acid, which can be applied to preparation of drugs for reducing uric acid or foods for assisting in reducing the level of uric acid, and has a good application prospect.

The embodiment of the invention relates to the technical field of coal bed gas drainage, and particularly discloses a liquid drainage device, a liquid drainage pump and coal bed gas exploitation equipment, the liquid drainage device comprises a pipe body, a piston and a one-way valve, the pipe body is internally provided with a containing cavity, one end of the pipe body is provided with a liquid outlet communicated with the containing cavity, and the other end of the pipe body is used for being connected with a lifting device; the peripheral wall of the pipe body is further provided with a liquid drainage hole which can enable the containing cavity to be communicated with the outside of the pipe body, the piston is movably arranged in the containing cavity, a liquid passing hole is formed in the piston, the end, away from the liquid outlet, of the liquid passing hole is used for being communicated with a lifting device, and the one-way valve is arranged in the containing cavity and connected to the end, facing the liquid outlet, of the piston. The one-way valve is communicated with the liquid passing hole, the piston can move between a first position and a second position relative to the pipe body, in the first state, the fluid can be discharged from the liquid outlet of the pipe body, and in the second state, the fluid can be discharged from the liquid discharging hole of the pipe body. In this way, deposition of solid particles in the pipe body can be reduced.

The invention discloses carbon monoxide gas oxidative dehydrogenation equipment, which belongs to the field of carbon monoxide treatment and comprises a hollow shell, a gas inlet cover fixedly connected to the upper end of the hollow shell, a bottom plate fixedly connected to the inner wall of the hollow shell and a first exhaust port formed in the lower end of the bottom plate. A first partition plate and a second partition plate located below the first partition plate are further fixedly connected to the inner wall of the hollow shell, and a flow passing cavity is formed between the upper portion of the first partition plate and the air inlet cover. The cooling air ring can exhaust oxygen to the inner wall of the reaction through hole, it is ensured that the oxygen is evenly distributed on the inner wall of the reaction through hole, the oxygen is prevented from being concentrated in a certain area, and therefore the catalytic reaction efficiency is improved; it is ensured that the catalytic reaction is evenly conducted in the whole catalyst, the situation that the reaction efficiency is reduced due to insufficient oxygen or unsmooth airflow in a local area is avoided, and it is ensured that reactants can be fully converted.

The invention relates to a high-salt scale inhibitor suitable for high-salt wastewater multi-evaporation working conditions and a use method, the scale inhibitor is composed of polyaspartic acid, polyepoxysuccinic acid, hydroxyethylidene diphosphonic acid, polymaleic anhydride, a composite quaternary ammonium salt, 2-phospho-1, 2, 4-tricarboxylic acid butane, a pH regulator, sodium persulfate, an antirust agent and a preservative, and has excellent scale inhibition performance. By using the scale inhibitor, the heat transfer efficiency of an evaporator can be remarkably improved, the service life of equipment can be prolonged, and the scale inhibitor is suitable for relieving aggregation and caking of salt on the wall surface of a quench tower under the condition of quench back-injection evaporation of high-salt wastewater; the evaporator is also suitable for relieving attached deposition of salt on the inner wall surface of the evaporator under the condition of multi-effect, double-effect and single-effect evaporation of high-salt wastewater; the scale inhibitor has excellent scale inhibition performance, can effectively prevent high-salinity wastewater from forming a scale layer under a multi-evaporation working condition, is simple and easy to understand in use method, is convenient to operate, and is suitable for a large-scale high-salinity wastewater treatment process.

The invention discloses bifidobacterium lactis BL-YR55 screened from yoghourt, the bifidobacterium lactis BL-YR55 is preserved in China Center for Type Culture Collection, the preservation number is CCTCC No.M 20221997, the bifidobacterium lactis BL-YR55 is classified and named as bifidobacterium lactis BL-YR55, the preservation date is December 23, 2022, and the preservation address is Wuhan University, China. The composition has efficient weight-losing and fat-reducing effects, is effective in viable bacteria sterilization, also has a function of relieving lactose intolerance, and has a wide application prospect of medicinal or health-care products.

The invention discloses a pig feed for increasing intramuscular fat of pork and a preparation method thereof, and belongs to the technical field of pig feeds. The pig feed comprises the following components in parts by weight: 100-120 parts of a basal feed, 3-4 parts of a compound enzyme agent, 5-7 parts of a probiotic compound bacterial agent, 1-3 parts of a vitamin additive, 20-30 parts of rice bran, 10-15 parts of a fat supplement and 3-6 parts of a functional additive. By adding various functional regulators beneficial to increase of fat in pork muscles, deposition of fat in the pork muscles is improved through various ways, and the corn, the soybean cakes and the wheat germs can provide high energy, so that fat deposition can be increased in the growth process of the pork; fat supplements rich in omega-3 fatty acid, such as flaxseed oil or fish oil, are added into the feed, so that the flavor of meat and the proportion of healthy fat can be improved, and the deposition and quality of intramuscular fat are influenced.

The invention provides a chemical vapor deposition device and method.The chemical vapor deposition device comprises a reaction cavity and a gas nozzle, the gas nozzle is arranged at the top of the reaction cavity, a gas spraying ring assembly is arranged on the periphery of the gas nozzle, the gas spraying ring assembly is provided with at least one gas spraying channel, and the gas spraying channel is obliquely arranged outwards in the radial direction; an outlet of the gas injection channel arranged in the reaction cavity is used for injecting isolation gas to form a gas barrier, and the processing space of the reaction cavity is isolated from the outside of the processing space. According to the chemical vapor deposition device provided by the invention, disordered diffusion and deposition of reaction gas can be effectively prevented, the gas control precision and the film deposition quality are improved, meanwhile, the cleaning and maintenance frequency of the chemical vapor deposition device is reduced, the service life of the chemical vapor deposition device is prolonged, and the production cost is reduced. And the overall stability and reliability of the chemical vapor deposition process are improved.

The invention provides a plant protection spray head and a plant protection spraying device. The plant protection spray head comprises a shell, an isolation cylinder is coaxially sleeved with the shell, and an inner cavity with the left end open and the right end closed is formed between the shell and the isolation cylinder; a jet flow cavity with the right end open and the left end closed is formed in the isolation cylinder. A plurality of jet flow holes used for communicating the inner cavity with the jet flow cavity are formed in the barrel wall of the isolation barrel, and a set angle is formed between the jet flow holes and the axis of the inner cavity. By changing the internal structure of the plant protection sprayer, the liquid medicine flowing condition is improved, energy loss is reduced, and the liquid medicine utilization rate is increased. The plant protection spraying device can flexibly adjust the angle and direction of the spraying head according to the forms and growth stages of different crops, the utilization rate of pesticide is increased, and environmental pollution is reduced.

The invention relates to a carbonaceous reducing agent pellet with low-order non-caking coal as a main body and application, and belongs to the technical field of efficient and clean utilization of resources. The carbonaceous reducing agent pellets are mainly prepared from low-order non-caking coal as a main body, the main body is matched with a composite organic binder, silica fume and a reinforcing agent, the mixture is subjected to compression molding and then placed in a sintering furnace to be roasted at the temperature of 450-650 DEG C in a protective atmosphere, and furnace cooling is conducted till the carbonaceous reducing agent pellets are obtained. The pellet developed by the invention has the characteristics of high fixed carbon content, high pellet strength, high breakage resistance, good static spheroidization index, low content of introduced impurities and high reaction activity, so that the pellet is particularly suitable for industrial silicon smelting. The low-order non-caking coal is applied in a large proportion, the micro-silicon powder produced by the submerged arc furnace is recycled, and the method is clean and environment-friendly, can be completely used for smelting and production of industrial silicon, reduces smelting unit consumption and production cost, and can replace or partially replace charcoal to become a carbonaceous reducing agent for smelting of industrial silicon.