29results about How to "Protect resources" patented technology

The invention discloses a guidance planning method for ecological restoration of a side slope, and relates to the technical field of ecological restoration, and the main scheme is as follows: collecting multiple data of the side slope; calculating a slope stability index, and presetting a threshold value to judge whether the slope area is in a risk state; calculating a vegetation coverage area, and further calculating a plant suitability index; calculating a plant variety selection index, and further calculating a planting quantity; calculating the water and soil loss rate after restoration; calculating a plant adaptation comprehensive index; calculating an ecological restoration effect index and a vegetation density, and further obtaining a planting layout rationality index; calculating a soil stability index, further calculating a water and soil loss control index, and judging whether the soil loss control state is abnormal or not according to a preset threshold value; calculating a water and soil conservation effect index, further obtaining a vegetation growth comprehensive index, presetting a threshold value to judge the vegetation growth condition, and taking corresponding remediation measures; the method can effectively guarantee scientificity and effectiveness of ecological restoration of the side slope.

The invention relates to the field of sludge treatment, and particularly discloses a method for recycling phosphorus in sludge pyrolysis residues, a flocculant synthesis method and application. The invention discloses a method for recovering phosphorus in sludge pyrolysis residues. The method comprises the following steps: drying the sludge pyrolysis residues, grinding and sieving; the sludge pyrolysis residues are put into a hydrochloric acid solution to react, and solid-liquid separation is carried out after the reaction; treating the phosphorus-containing extracting solution through adsorption resin to obtain a phosphorus purification solution; adjusting the pH value of the phosphorus purification liquid to 9-11, and carrying out a crystallization reaction under the condition that the molar ratio of magnesium to nitrogen to phosphorus is (0.8-1.2): (1-1.6): 1 to obtain struvite; a synthetic method of the flocculating agent is as follows: the flocculating agent is prepared from residual sludge residues. The method for recycling phosphorus in the sludge pyrolysis residues has the advantages that phosphorus resources are recycled from the sludge pyrolysis residues, and the residues are secondarily utilized. The flocculating agent is applied to municipal sewage treatment.

The invention discloses a novel single-rail extrusion welding process for a geomembrane. The process comprises the following steps: carrying out leveling treatment and drying treatment on the surface of a reservoir bottom; the geomembrane is cut into a proper size and laid on the surface of the reservoir bottom, and the lap joint area is kept in a flat state; the TPO geomembrane, the novel geomembrane and the HDPE geomembrane are sequentially lapped in a staggered joint mode and welded through a single-rail extrusion welding machine, so that intersection points formed among membrane blocks are in a T shape; testing the geomembrane, and marking and repairing the found defect part until the retest is qualified; the novel geomembrane comprises a base material layer and an anti-ultraviolet layer, the upper surface of the base material layer is coated with the anti-ultraviolet layer, and the thickness ratio of the base material layer to the anti-ultraviolet layer is 1: (0.1-0.5). The construction is convenient, the adopted novel geomembrane has the excellent deformation adaptive capacity of an elastic material and the weldability of a plastic material, and when the geomembrane is used for seepage control of a reservoir area, leakage damage to a reservoir bottom connecting part can be avoided.

The invention belongs to the technical field of agricultural mechanization and intelligent equipment, and particularly relates to a corn harvester operation soil compaction degree judgment method based on machine tool real-time parameters, in particular to a soil compaction degree judgment method. The invention aims to solve the problem of low soil compaction prediction accuracy caused by the fact that the existing soil compaction prediction method considers soil indexes and machine pressure and does not consider the influence of dynamic indexes which can be autonomously controlled by a driver on soil compaction. The method comprises the steps of 1, collecting a feature data training set; 2, obtaining a standardized feature data training set; 3, obtaining an optimal compaction degree prediction model; 4, constructing an optimal comprehensive compaction degree model; 5, constructing an optimal compaction early warning model; 6, constructing an optimal comprehensive compaction risk early warning model; 7, collecting a to-be-detected feature data set, obtaining an optimal comprehensive compaction degree model of the to-be-detected feature data set, and outputting a comprehensive compaction degree value and a risk early warning level; and 8, pushing on a screen end in real time.

A growth layer I and a germination layer I are laid on the closed beach face of the tailing pond, a plurality of vegetation bags are embedded in the closed beach face of the tailing pond at intervals, each vegetation bag is of an inner-layer and outer-layer bag-shaped structure with the top open, and a growth cavity with the top open is formed in the inner face layer of each vegetation bag. The outer surface layer of the vegetation bag surrounds the inner surface layer, the bottom edge of the outer surface layer is fixedly connected with the bottom edge of the inner surface layer, a moisturizing and heat insulation cavity is formed between the outer surface layer and the inner surface layer of the vegetation bag, the growth cavity is filled with a growth layer II and a germination layer II from bottom to top, and the moisturizing and heat insulation cavity is filled with moisturizing cotton. The beach face is covered with the growth layer I and the germination layer I, the vegetation bags are buried on the beach face at intervals, the vegetation coverage rate is guaranteed, meanwhile, the vegetation bags can avoid loss of base materials, and the defects that an existing vegetation bag is single in function and poor in moisture preservation and heat insulation performance are overcome through the composite structure and filler configuration of the vegetation bags. The device has the advantages of being simple in structure, good in moisture preservation and heat insulation performance, high in vegetation coverage rate after restoration and long in service life.

The high-frequency sound wave fish driving device comprises a main body structure and a modular buoy structure arranged below the main body structure, the main body structure comprises a main frame body, the main frame body is connected with the modular buoy structure through a fastening bolt, and a solar cell panel and a mainframe box are arranged on the main frame body; a controller, a plurality of connectors and a fixing rod are arranged on the mainframe box, a cross is arranged at the bottom of the fixing rod, driving propellers are arranged at the ends of the cross, the connectors are connected with a waterproof plug, and the waterproof plug is connected with a high-frequency generator through an extension line. With the adoption of the structure, the modular buoy structure can be flexibly combined and adjusted and is suitable for carrying fish driving equipment with different powers; the driving mode is divided into two fixed-point cruising modes, the fish driving requirement of the tail water area can be met more easily, and the automatic fish driving efficiency is greatly improved; the operation and maintenance efficiency of hydropower station equipment is improved, fish resources are protected, and the comprehensive ecological and environment-friendly benefits of a hydropower hub are improved.

The invention provides a method for evaluating river pollution and application thereof, and belongs to the technical field of river pollution treatment. The invention discloses the relationship between the microbial community composition change and the environmental factor in the river water body of the drainage basin. According to the invention, bacterial communities and virus communities in a river are significantly related to environmental factors (r is greater than 0.8, and p is less than 0.05), which indicates that the environmental factors are the main reason influencing the difference and abundance change of the bacterial communities and virus communities in the river, and environmental pollution control measures should be taken to establish a perfect pollution control system. According to the method, a scientific basis is provided for the management of a river ecosystem and the protection of biological diversity, the influence of the environmental factors on the point location can be known by detecting the microbial community structure of the river in the river, a reference is provided for reasonably utilizing scarce fresh water resources, and a safety guarantee is provided for preventing and controlling the water environment pollution risk and ensuring the water quality safety.

The invention discloses a system security real-time verification method and system for a discrete event system, and the method comprises the steps: building a Time Labled Petri Nets model of the discrete event system according to the information of the discrete event system, and enabling the information of the discrete event system to comprise an event, a tag and time information; for the Time Labled Petri Nets model of the discrete event system, using the real-time observation expression of the discrete event system and the expression of the initial secret state of the discrete event system to obtain the real-time observation of the discrete event system and the initial secret state of the discrete event system; constructing an integer linear programming mathematical problem model according to the discrete event system verification real-time security constraint condition; substituting the real-time observation of the discrete event system and the initial secret state of the discrete event system into the integer linear programming model to solve and verify the security of the integer linear programming model to obtain a verification result; and judging the security of the discrete event system according to a verification result.

The utility model relates to the technical field of cosmetics, and particularly discloses an all-aluminum replaceable lipstick tube which comprises a lower shell, a middle bundle core assembly used for storing lipstick paste is installed in the lower shell, and a fastener used for fixing the middle bundle core assembly is installed in the lower shell so as to improve the stability of the middle bundle core assembly during installation. The fastener comprises a base installed on the lower shell, a clamping part is arranged between the base and the middle bundle core assembly, and when the middle bundle core assembly is installed in the lower shell, the base is connected with the middle bundle core through the clamping part. When the driving force used for driving the middle bundle core assembly to be separated from the base is larger than the friction force between the clamping part and the middle bundle core assembly, the middle bundle core assembly can be driven to be separated from the base, a new middle bundle core assembly is clamped on the base again through the clamping part, replacement of the middle bundle core assembly is achieved, the whole lipstick tube can be recycled, and the cost is reduced. The user cost can be saved, and the effect of protecting resources can be achieved.

The utility model provides a solar cell panel surface automatic cleaning device which comprises a metal beam and two rows of vertical rods, the tops of the two rows of vertical rods are connected with the bottom of the metal beam, the top of the metal beam is provided with a solar cell panel and a gate position, the gate position is located on one side of the solar cell panel, and the gate position is located on the other side of the metal beam. The solar cell panel cleaning device has the beneficial effects that when a fiber brush and a silica gel scraping strip in one cleaning mechanism are used for a long time and cannot be used any more, at the moment, the replacement mechanism operates to recover the seriously-abraded cleaning mechanism into the containing groove, the cleaning mechanism is replaced, the cleaning mechanism is replaced, the cleaning mechanism is replaced, and the cleaning efficiency is improved. A brand-new cleaning mechanism extends out of the containing groove, then a fiber brush and a silica gel scraping strip in the cleaning mechanism which is seriously abraded can be replaced after a worker arrives at the site next time, and in the period, the cleaning work of the cleaning mechanism on the solar cell panel cannot be affected, so that the cleaning efficiency of the solar cell panel is improved. And the cleaning work of the solar cell panel is not delayed.

The invention discloses a method for preparing Janus paper from mycelium and Janus paper, and belongs to the technical field of polymer compounds. The method comprises: step 1, inactivation of mycelium; step 2, brooming of mycelium; step 3, purification of solid fermentation mycelium; step 4, gelation of secondary fermentation mycelium; step 5, preparation of Janus paper. The invention prepares Janus paper from edible fungus mycelium, which can replace the traditional papermaking method with wood as the main raw material, does not need to add plastic and chemical coating agent, and has the advantages of environmental protection, low carbon and degradability.

The invention provides an ecological restoration method for moss crust in a dry-hot valley area by taking slag as a main material. An ecological restoration base material comprises the following components: slag, planting soil, plant straw, a water-retaining agent, a fertilizer-retaining agent, a structure modifier, a growth promoting agent and moss powder. The slag is used as a main material, engineering waste is effectively converted into ecological restoration resources, environmental pollution and resource waste are reduced, the physical structure of soil is improved through the water-retaining agent and other admixtures, the air permeability and drainage of the soil are improved, growth of moss roots is promoted, ecological restoration is promoted, and increase of biological diversity is promoted; the formation of the moss crust can improve the local microclimate, increase the soil humidity and promote the growth of other plants, and the physical characteristics of the slag and the growth of the moss are combined, so that the moss can better survive under a drought condition, the adaptability of the moss to a dry and hot environment is enhanced, soil wind erosion is effectively prevented, and soil resources are protected.

This invention discloses a method for separating fluorosilicic acid and hydrofluoric acid using an anion exchange membrane, comprising the following steps: adding a flocculant to a fluorosilicic acid-hydrofluoric acid mixture, aging it, then adding a desulfurizing agent to carry out a desulfurization reaction to obtain a mixed solution, adding the mixed solution to the feed side of an anion exchange membrane for membrane separation, and obtaining a hydrofluoric acid solution with a mass concentration of 2-30% on the clear water side after separation. This invention uses a flocculant to rapidly settle solids such as sodium fluorosilicate and potassium fluorosilicate in the fluorosilicic acid-hydrofluoric acid mixture, uses a desulfurizing agent to remove sulfuric acid, and then uses an anion exchange membrane to effectively separate fluorosilicic acid and hydrofluoric acid in the fluorosilicic acid-hydrofluoric acid mixed solution. The hydrofluoric acid separated by membrane separation has high purity and high output value, increases the utilization rate of by-product hydrofluoric acid, and reduces costs.

The offshore wind turbine foundation truss comprises a truss body, the truss body comprises truss pile legs, the upper ends of the truss pile legs are connected with truss guide pipe legs, the upper ends of the truss guide pipe legs are connected to the lower surface of a supporting platform, and the lower end of a wind turbine tower drum is fixed to the upper surface of the supporting platform. A first connecting pipe frame, a second connecting pipe frame and a third connecting pipe frame are sequentially arranged between every two adjacent truss guide pipe legs from top to bottom. An ECC bonding layer and an FRP protective layer are arranged at a connecting node; a POZD material layer is arranged on the outer surface of the truss main body; the truss guide pipe leg comprises a guide pipe leg outer layer and a guide pipe leg inner layer, a guide pipe leg interlayer is arranged between the guide pipe leg outer layer and the guide pipe leg inner layer, and the guide pipe leg interlayer is filled with oil rock page waste residue concrete. The FRP protective layers are arranged at the connecting joints, the POZD material layers are arranged outside the truss body, and the truss guide pipe legs are filled with the oil rock page waste residue concrete, so that the overall corrosion resistance and load resistance can be improved.

The invention provides a standing tree cutting degree parameter automatic inversion method based on a ground-based laser radar and deep learning, and relates to the technical field of forest tree measurement. The method comprises the following steps: acquiring an original three-dimensional laser point cloud based on multi-station scanning, and acquiring a clean trunk point cloud; and generating a high-density diameter-height observation data set through axial skeletonization extraction and slicing processing in combination with circle fitting calculation. A variable parameter cutting degree equation model introducing a relative tree height ratio and a height-diameter ratio factor is constructed, and a residual sum of squares objective function is established; and iteratively solving the optimal shape parameter vector by using a nonlinear least square algorithm, and outputting a model parameter of the target stumpage when a precision evaluation index is met. According to the method, the problem of measurement errors caused by branch and leaf shielding in a complex under-forest environment is effectively solved, a traditional destructive survey mode of cutting down and analyzing trees is replaced, non-destructive, high-precision and automatic inversion of standing tree cutting degree parameters is achieved, and the efficiency and the digital level of forest resource monitoring are improved.

The invention discloses a method for preparing Janus paper from hyphae and the Janus paper, and belongs to the technical field of high-molecular compounds. The method comprises the following steps: step 1, inactivating hyphae; step 2, fibrillation of hyphae; step 3, purification of solid fermentation hyphae; step 4, gelatinization of secondary fermentation hyphae; and step 5, preparing the Janus paper. According to the method, the Janus paper is prepared from the edible fungus hyphae, a traditional papermaking method with wood as a main raw material can be replaced, plastic and chemical coating agents do not need to be added, and the method has the advantages of being environmentally friendly, low in carbon and degradable.

The utility model discloses a planting groove with a drainage structure, which comprises a base, a mounting box is arranged at the upper end of the base, the mounting box is fixedly connected with the base, a mounting groove is arranged at the upper part in the mounting box, and a planting box is arranged in the mounting groove; the screw rods are arranged on the two sides of the lower end of the mounting box, one ends of the screw rods extend into the mounting groove and are rotationally connected with the inner wall of the mounting groove, limiting rods are arranged at the front end and the rear end of the two sides in the mounting groove, fixing plates are arranged outside the screw rods, and the fixing plates are rotationally connected with the screw rods; by means of the structure, the problems that the planting box is difficult to move, when the rain is too heavy, rainwater cannot be drained in time, the rainwater is left in the containing groove, silt is prone to being generated during drainage, when accumulated water is drained, part of the silt is brought out by the accumulated water and enters the drainage pipe, and the rainwater cannot be drained in time are solved. And sediment accumulation blocks the discharge pipe and the planting groove is filled with accumulated water.

The invention discloses an under-forest planting method for paris polyphylla, and belongs to the technical field of planting of traditional Chinese medicinal materials. The method comprises the steps of land selection, land preparation, transplanting, withered fallen leaf covering and cultivation management. According to the method, a traditional artificial sunshelter planting mode is broken through, the Yunnan paris polyphylla is planted in the natural environment of the abandoned forest, original trees are reserved, the cost can be saved, and the land utilization rate is increased; under the original ecological condition, the paris polyphylla is high in adaptability and good in growth vigor, and the yield and quality of the paris polyphylla can be improved. According to the planting method, forest resources can be effectively protected, the economic output of forest land is increased, the quality of paris polyphylla is improved, the application amount of fertilizer is reduced, pesticide residues are eradicated, and green, healthy and residue-free paris polyphylla products are truly achieved.

The invention relates to the field of biological and chemical prevention and control, in particular to a method for preventing and controlling aphids by combining predatory natural enemies orius sativus and afidopyropen, and the method comprises the step of preventing and controlling the aphids with resistance to chemical pesticides. The invention provides a novel prevention and control technology combining biological prevention and control and chemical prevention and control, aims at combining'insect control by insects' and'insect control by medicines', and explores a novel prevention and control way. The predatory natural enemy can prey for prevention and control for a long time, the unique action mechanism and combined prevention and control of the afidopyropen are exerted, the prevention and control effect is remarkably improved, the duration time is long, the cost is saved by 80% or above compared with that of independent application of the predatory natural enemy, and the prevention and control effect is better than that of independent application of the afidopyropen. The combined application of natural enemies and pesticides can reduce the use amount of chemical pesticides, reduce the damage rate of crops, delay the generation of pest resistance to drugs, develop a new means of pesticides in the field of pest control, and open up an important way for a comprehensive control technical system of resistant aphids.

The invention discloses a method for producing Si4210 through a 33MVA large submerged arc furnace, and belongs to the technical field of metallurgy and energy. According to the method, petroleum coke is added to reduce dependence on charcoal, the petroleum coke is crushed and screened before being used, the particle size is controlled within the range of 1-10 mm, the particle size is reduced, the specific surface area is increased, and reactivity is improved; the used petroleum coke is dried and preheated through a steam pipeline, and the reaction activity is improved by reducing moisture and increasing porosity; the stoking depth is controlled, it is ensured that the material layer structure does not change, and the petroleum coke reacts in the silicon carbide generation area; calcium chloride is added in the mixture, so that the melting point of slag is reduced, the fluidity of the slag is improved, and the stability of a crucible reaction area is ensured. Compared with the method for producing the Si4210 product by using charcoal, the method has the advantages that the used raw materials are relatively common in the market, the selection channel of the raw materials for the high-grade industrial silicon is widened, and the production cost is reduced.

The application belongs to the technical field of biology, and specifically discloses a method for relieving the adverse effects of glufosinate-ammonium on bumblebees by using astaxanthin. It is found that feeding astaxanthin to bumblebees can effectively relieve the adverse reactions caused by glufosinate-ammonium residues; in terms of the content of active oxygen in the intestinal tract, astaxanthin can significantly eliminate the active oxygen caused by glufosinate-ammonium; in terms of feeding behavior, astaxanthin can significantly restore the reduced feeding amount of bumblebees caused by glufosinate-ammonium exposure; in terms of the integrity of the midgut, astaxanthin can significantly relieve the dissolution of the peritrophic membrane of the midgut of bumblebees caused by glufosinate-ammonium exposure; and in terms of the intestinal microbial layer, astaxanthin can restore the level of core bacteria of bumblebees caused by glufosinate-ammonium exposure. The application also provides bumblebee feed for relieving the toxicity of glufosinate-ammonium and the application of astaxanthin in the preparation of a preparation for relieving the adverse effects of glufosinate-ammonium on bumblebees.

This invention provides an experimental device and method for attracting, blocking, guiding, and enticing fish. The bottom center of the experimental fish tank is hinged to a base. Multiple lifting devices connect the fish tank to the base on both sides of the hinge point. One end of the fish tank has an outlet, and the other end has a return channel, which is connected to the outlet via a pump to form a circulation system. A sliding experimental platform is mounted on the fish tank, and the experimental device for attracting, blocking, guiding, and enticing fish is installed on the platform. Fish-blocking nets are installed inside the fish tank and on both sides of the platform. This helps us better understand how to protect marine and freshwater ecosystems. In summary, the purpose of constructing this experimental device for attracting, blocking, guiding, and enticing fish is to protect fishery resources and the ecological environment, and to promote sustainable development.

The invention belongs to the field of cable discs, and discloses a degradable wood-plastic cable winding disc and a preparation method thereof.The degradable wood-plastic cable winding disc is prepared from, by weight, thermoplastic plastic, plant fibers, a coupling agent, a compatilizer, a reinforcing agent, a release agent and a mixed assistant.The preparation method comprises the following steps that S1, raw materials are prepared; s2, compression molding; s3, assembling and forming; a disc of a combined environment-friendly degradable wood-plastic cable winding disc comprises a plurality of groups of outer fan-shaped plates and a plurality of groups of inner fan-shaped plates, the outer fan-shaped plates and the inner fan-shaped plates are detachably connected, the plurality of groups of outer fan-shaped plates and the plurality of groups of inner fan-shaped plates are connected in a staggered mode, the outer fan-shaped plates and the inner fan-shaped plates are made of degradable materials, and the outer fan-shaped plates and the inner fan-shaped plates are made of degradable materials. According to the technical scheme, the winding disc is made of degradable materials and convenient to disassemble, meanwhile, high stability can be guaranteed, and the comprehensive performance of the winding disc is greatly improved.

This invention discloses a method for artificially cultivating large-flowered sesame, comprising the following steps: S1, preparing the seedbed: After tilling the land, make raised beds and evenly spread well-rotted organic fertilizer on the bed surface; thoroughly water the bed surface, stir the surface soil into a thin mud, and scrape it smooth to create a slurry; S2, sowing: On the slurry bed surface, sow the seeds or tubers of the host plant, tiger nut, at a spacing of 10-15 cm, and evenly scatter the large-flowered sesame seeds on the muddy bed surface; S3, seedling management: Immediately after sowing, construct an arched shed, controlling the light transmittance at 40%-50%; ventilate in the morning and evening 20-30 days after emergence; remove the arched shed after 45-60 days and remove weeds; maintain the relative soil moisture content of the bed surface at 60%-80%. The advantages of this invention are: effectively increasing the yield of large-flowered sesame, achieving a double harvest of large-flowered sesame and tiger nut.

The invention discloses a vehicle load monitoring method for monitoring an engine operation audio signal. The method comprises the following steps: acquiring engine audio data through audio acquisition equipment; the audio signal of the engine is analyzed, information about the rotating speed of the engine is extracted, and then the rotating speed of the engine is calculated; obtaining the output power of the engine at different rotating speeds according to the engine working condition diagram; the running speed, obtained by the gyroscope, of the automobile is obtained, and wheel driving force is calculated according to a power formula; calculating the longitudinal traction force applied to the vehicle in the moving process; the vehicle acceleration is obtained from the gyroscope, the vehicle load is calculated based on the Newton second law, and whether the vehicle is overloaded or not can be known by comparing the vehicle load with the specified load. The vehicle can be weighed at any time without being limited by the position, and the management efficiency of related departments and vehicle managers is improved.

A process for obtaining low-arsenic yellow phosphorus from phosphorus-containing sewage, relating to the field of water pollution control and resource regeneration technology. It includes the following steps: step S1 filtration: filter the phosphorus-containing sewage to obtain dried filter residue and filtrate; step S2 detection: detect the content of P element in the filtrate; step S3 precipitation: add magnesium salt to the filtrate, mix evenly, let stand, filter to obtain residue and clear liquid; step S4 drying; step S5 granulation: add lime, coke powder and binder to the dried residue, mix and granulate to obtain mixed balls; step S6 sintering: sinter the mixed balls at 200-300°C to obtain pellets; step S7 decomposition: decompose the pellets at 1200-1350°C to obtain low-arsenic yellow phosphorus. This process for obtaining low-arsenic yellow phosphorus from phosphorus-containing sewage is energy-saving, environmentally friendly, and has high yellow phosphorus quality and conversion rate.

The utility model discloses a sign board for forest fire prevention, which comprises a sign board mechanism and a stabilizing mechanism, the stabilizing mechanism is fixedly connected with the sign board mechanism, the stabilizing mechanism comprises a loop bar, the periphery of the loop bar is fixedly connected with a rotating shaft, the outer side of the rotating shaft is movably connected with a transmission rod, the bottom of the transmission rod is provided with a limiting box, and the limiting box is fixedly connected with the loop bar. The left side of the inner wall of the limiting box is fixedly connected with a sliding column, the other end of the sliding column is fixedly connected with the inner wall of the limiting box, and the surface of the sliding column is slidably connected with a sliding block assembly. According to the sign board for forest fire prevention, the phenomenon that in the long-term use process of a traditional sign board for forest fire prevention, the sign board is likely to be collided by field organisms or affected by natural factors, and consequently the sign board inclines and collapses or deviates is changed, it can be effectively guaranteed that the sign board can be stably erected at the specified position, and the warning effect is effectively achieved.

The utility model relates to traditional Chinese medicine decocting equipment, in particular to a squeezing device of a decocting machine, which comprises a decocting barrel, a filter cartridge is clamped in the decocting barrel, a medicine squeezing component is arranged at the lower end of the filter cartridge, a pot cover is mounted at the upper end of the decocting barrel, a slidable telescopic handle is arranged on the filter cartridge, and the telescopic handle is matched with the pot cover to slide up and down. And the medicine squeezing assembly comprises a rotating seat, the rotating seat is in shaft connection to the filter cartridge, rotating plates are connected to the two sides of the filter cartridge, fixing plates are fixedly installed on one sides of the rotating plates, and a driving column is movably connected to the medicine squeezing assembly in an inserted mode. The medicine squeezing device has the beneficial effects that the driving column is matched with the medicine squeezing assembly, medicine liquid left in medicine residues can be squeezed out conveniently, force can be applied more easily, and compared with traditional handle squeezing, the product is better in squeezing effect.

The invention provides a system and method for producing calcium fluoride, and belongs to the field of chemical engineering. The system comprises a neutralizing tank, an ammonolysis tank, a silicon dioxide separator, a suspension preparation tank, a suspension delivery pump, a suspension spray gun, a calcium fluoride rotary kiln, a cyclone separator, a bag filter, a target product conveyor, an absorption tower, a circulating pump and a cooler. By adopting the system and the method, the calcium fluoride is produced by utilizing the by-product fluosilicic acid of the wet-process phosphoric acid device and the by-product calcium carbonate of the ammonium sulfate device, the by-product ammonium sulfate-ammonium carbonate solution enters the ammonium sulfate device to produce ammonium sulfate with phosphogypsum, and the by-product silicon dioxide is used for producing a silicon product. The invention aims to solve the storage problem of fluosilicic acid and the recycling problem of calcium carbonate and ammonium carbonate, waste is turned into wealth, and the environment is protected.