65results about How to "Easy to use later" patented technology

The invention discloses an environmentally-friendly construction waste crushing device with a dedusting function. The device comprises a pedestal, a working box is fixedly arranged at the top of the pedestal through a bracket, a left first rotating shaft and a right first rotating shaft are arranged in the top of the working box in an anteroposterior manner, the left first rotating shaft and the right first rotating shaft are respectively rotatably connected with the front wall and the rear wall of the working box, and a crushing roller is fixedly mounted on a part, positioned in the working box, of each of the left first rotating shaft and the right first rotating shaft; the internal left wall of the working box is fixedly connected with an elastic plate, a drawer is arranged at the rightside of the elastic plate, and the drawer is downwards obliquely arranged from the inside to the outside; and the bottom of the drawer is provided with an opening, and the opening is fixedly connected with a screen. Construction wastes are crushed by the relative rotation of the crushing rollers, so the crushing efficiency is high; the construction wastes fall into the drawer after being crushed,and the construction wastes are screened through the screen, so it is ensured that the construction wastes have small enough particles and can be easily used lately; and the elastic plate is driven by a vibration motor to vibrate in order to drive the drawer and the screen to vibrate, so screening is accelerated.

The invention discloses a machinable offshore enteromorpha salvage ship. The machinable offshore enteromorpha salvage ship comprises a ship body, and an enteromorpha collecting device, an enteromorpha dewatering device, an enteromorpha drying device and an enteromorpha smashing device are sequentially installed on the salvage ship and are each provided with a driving motor. By means of the machinable offshore enteromorpha salvage ship, a salvage fishing net is replaced with the mechanical enteromorpha collecting device, the manpower is reduced, and the salvage efficiency is improved. Dewatering, drying, smashing and other operations are carried out on enteromorpha salvaged to the ship so as to form enteromorpha powder low in impurity content, the enteromorpha powder can be used as animal feed, and abundant economic benefits are obtained.

The invention relates to a wave energy pump. The wave energy pump is characterized by comprising a plurality of wave energy collecting floating bodies, a plurality of connecting components used for connecting every two adjacent floating bodies, an anchoring device which is connected at the front end of a first floating body, a plurality of sea water pre-processing devices arranged in the floating bodies, and a high-pressure sea water post-processing device. A single-lug ring and a double-lug ring which are opposite to each two floating bodies are arranged on each connecting component and are connected through a pin shaft, and accordingly the adjacent floating bodies can freely swing in an up-and-down and left-to-right mode. A hydraulic cylinder and a piston rod are connected in each floating body through a ball hinged support, and wave energy is directly and efficiently converted into hydraulic energy by the full utilization of relative movement between every two adjacent floating bodies. The wave energy pump is convenient to assemble and disassemble, when sea circulations with bad wave conditions such as typhoon happen or when the wave energy pump needs to be examined and repaired, floating bodies and the first floating body can be disconnected on the water surface, and the wave energy collecting floating bodies are dragged and transported to a safe sea area to avoid risks or to be examined and repaired. The wave energy pump supplies efficient hydraulic power for sea water desalination, power generation and the like, and can be widely applied to the process of developing sea energy.

The invention provides a production method for making bricks from building waste. The building waste can be recovered effectively and made into bricks by means of the method, so that resource utilization of the building waste is achieved, and environmental pollution caused by stacking or landfill of the building waste is avoided. The process comprises the following steps: A, pre-treatment: firstly, reducing the building waste to 0.5m; B, charging; C, primary crushing: carrying out primary crushing through a jaw crusher; D, deironing; E, secondary crushing: conveying a material without iron toan impact crusher to be crushed secondarily; F, screening: screening the secondarily crushed material to different specifications through a vibrating screen; G, preparing brick-making raw materials: proportioning the screened regenerated fine aggregate in a proportion as follows: 65% of mud powder, 15% of cement and 20% of regenerated aggregate; H, brick making: conveying the uniformly stirred rawmaterial to a hopper of a brake maker; and I, maintaining: transferring ecological bricks produced in the brick maker to a maintaining region to be maintained.

The invention relates to a low-copper and antibiotic-free composite premix for pigs. Each kilogram of the composite premixed feed comprises 3.38-3.63 grams of composite vitamins, 19-42 grams of composite trace elements, 2.5-10.5 grams of composite enzyme for the pigs, 4.5-15.75 grams of choline chloride, 50-125 grams of lysine, 25-94.5 grams of a mildew adsorbent, 19-26.25 grams of rice husk powder, 3.95-4.05 grams of ethoxy quinoline, 1.2-1.8 grams of phytase, 30-45 grams of edible salt, 50-70 grams of limestone powder, 55-75 grams of calcium hydrogen phosphate, 3.8-4.2 grams of aspartame, 0.95-1.05 grams of fragrance substances, 1.5-2.5 grams of chitosan oligosaccharide, 1.5-2.5 grams of green tea powder and 1.5 grams of yeast selenium. The feed disclosed by the invention is not added with antibiotics, and the using amount of copper is greatly reduced, so that organic matters such as dung in a pig farm are easier to degrade or ferment; on the premise that the environment is protected, safety antibiotic-free pork is produced, and the quality and the flavor of the pork are improved.

The invention provides a self-cleaning method capable of utilizing a rainwater filter in a rainwater collecting system. The method is characterized in that a spinning water flow is formed in a filtering chamber by the aid of change of the water flow direction, and self-cleaning is performed on a vertically-placed filter net. The method has the benefits as follows: self-cleaning is performed on the filter net by the aid of power produced under the rainwater flowing effect; a swirling flow mode is formed during rainwater filtration, so that multi-stage filtration of gravel, impurities and the like is facilitated; particulate matters with diameters larger than 2 mm can be removed, so that the rainwater cleanliness of the rainwater collecting system is effectively guaranteed.

The invention relates to a method for a dry method red mud yard forced drainage and the equipment thereof belonging to the tailing piling technology field. The method comprises the following steps: injecting pressure gas from the yard bottom and enabling the red mud adhesive liquid to be compulsorily drained into a filter tube or the red mud surface using the gas pressure to establish a high gradient seepage field; generating a plurality of dispersion microcracks from below to above by pneumatic splitting effect so as to improve the permeance property of the piling red mud and the seepage consolidation efficiency of the red mud. The more closely the red mud approaches the bottom the lower the water content is because of the compulsory drainage of the pressure gas, which prevents the leakage of red mud adhesive liquid and reduces environment pollution, furthermore is beneficial to the self stability of the red mud yard and the latter use of the red mud. The compulsory drainage process is controlled automatically in all day and night without affection of weather, greatly reduces the human and mechanical workload such as broken of red mud surface crust and the mechanical turning, and simplifies the anhydration consolidation process of the red mud. The application of the invention is simple and the yard size and construction cost are both reduced with a great reduced anhydration consolidation period of the red mud.

The invention discloses a soil remediation kettle. The soil remediation kettle comprises a soil remediation kettle body. The soil remediation kettle body comprises an inner pot and an outer shell. A vibrating motor is arranged between the bottom of the inner pot and the outer shell. A cover plate is arranged above the soil remediation kettle body. At least one spray header is arranged on the innerside of the cover plate and communicates with a peripheral liquid storage tank. A stirring device is arranged in the soil remediation kettle body, the stirring device comprises a first stirring shaftand a second stirring shaft, a filter net is arranged below the second stirring shaft and comprises a magnetic material net layer and a metal net layer, and a liquid drain opening is formed in the lower end of the soil remediation kettle body and connected with a remediation liquid recovery device. The soil remediation kettle is reasonable in design and good in soil remediation effect.

The invention relates to the field of tea oil preparation, in particular to a high-stability shell-breaking screening device for tea oil preparation process. The technical problem to be solved by theinvention is to provide a high-stable cracking screening device for tea oil preparation process, which saves time and labor, facilitates uniform and sufficient cracking treatment of tea oil seeds, canclassify and recover the cracked tea seeds, and is convenient for later utilization. A high-stability shell-breaking screening device for tea oil preparation process comprises a pillar, a placing plate, a receiving frame, a mounting plate, a hopper, a screening box, a cover plate, a return spring, a rotating cylinder, a first bearing seat, a filter screen, a first gear, a first rotating shaft, asecond gear, a driving motor, a second rotating shaft, a third gear, a second bearing seat, a partition plate, and the like. The invention achieves the effects of saving time and labor, being convenient to uniformly and sufficiently treat the broken shell of the tea oil seed, being able to classify and recover the broken shell of the tea seed, and being convenient for later utilization.

The invention discloses a casting waste residue recycling device, and relates to the technical field of waste residue recycling . The casting waste residue recycling device comprises a first conveyingbelt, wherein a crushing mechanism is arranged at the output end of the first conveying belt and has a crushing function; a magnetic separation mechanism is arranged at the output end of the crushingmechanism; a second conveying belt is arranged at the output end of the magnetic separation mechanism; a sorting mechanism is arranged at the output end of the second conveying belt; the sorting mechanism has a screening function; the magnetic separation mechanism comprises a magnetic conveying belt; the conveying belt of the magnetic conveying belt has magnetism; and a material collecting vehicle is placed at the bottom of the magnetic conveying belt. According to the casting waste residue recycling device provided by the invention, through the arrangement of the crushing mechanism, blocky casting waste residues can be crushed into a granular mixture; and in combination with the arrangement of the magnetic separation mechanism, iron alloy-containing particles and casting sand particles in the granular mixture can be separated, so that subsequent recycling is facilitated.

The invention provides a method for producing acidic potassium dihydrogen phosphate and belongs to the technical field of production of phosphate in the inorganic chemical industry, aiming at solvingthe technical problems in the prior art that the cost for producing the acidic potassium dihydrogen phosphate is high and the purity is low. The method for producing the acidic potassium dihydrogen phosphate, disclosed by the invention, comprises the following steps: a, mixing materials; b, carrying out dechlorination reaction; c, hydrolyzing slurry; d, crystallizing, separating and drying, wherein the dechlorination reaction is to carry out heating dechlorination in a sealed reaction kettle; then process water is added to carry out hydrolysis. The acidic potassium dihydrogen phosphate prepared by the method has the advantages that the chlorine content is 0.09 to 0.31%, the purity is high, the appearance looks like white sugar and the water solubility is good; the utilization requirementsof high-end water-soluble fertilizer are met.

The invention discloses a reagent for preventing silver of an LED silver bracket from discoloring and preparation and film forming methods. The reagent for preventing silver from discoloring is prepared from a sulfydryl-containing silane coupling agent and one or two vinyl-containing silane coupling agents capable of being compatible with package resin. The LED silver bracket which is equipped with gold wires but is not packaged with resin is soaked into a silane coupling agent mixing solution with sulfydryl and vinyl in the end group, so that a two-layer-like polysiloxane composite thin film can be quickly generated on the silver-based surface. High bonding force can be generated between the polysiloxane composite thin film and silver, and the polysiloxane composite thin film is high in compatibility with the package resin on the surface. The reagent for preventing silver from discoloring is high in sulfur prevention capacity and low in cost, and cannot affect the later packaging process; the synthesis process is simple, and the subsequent use and operation are simple and convenient; therefore, the reagent is suitable for large-scale popularization, and has the advantages of not polluting the environment and the like.

The invention discloses efficient mineral exploitation equipment, and relates to the field of mineral exploitation. For the problems of difficulty in later-stage transfer and low later-stage utilization rate caused by different fineness during existing ore exploitation, the following scheme is provided. The efficient mineral exploitation equipment comprises a shell, wherein a mounting plate is fixedly arranged on one side of the shell, and a driving motor is fixedly arranged at the top end of the mounting plate; an output shaft of the driving motor is fixedly connected with a rotating rod, and the rotating rod transversely penetrates through the shell; main belt wheels are fixedly connected to the end, away from the driving motor, of the rotating rod and a rod body of the rotating rod; and a plurality of crushing hammers with the same structure are fixedly connected to the rod body, located in the shell, of the rotating rod. According to the efficient mineral exploitation equipment, mined ore can be subjected to multi-stage crushing treatment, and thus the ore mining efficiency is improved; the crushed ore can be screened, thus the particle size of ore is uniform, and transfer and later-stage utilization are convenient; and meanwhile, dust falling treatment can be conducted on the ore, and the efficient mineral exploitation equipment is suitable for application and popularization.

The invention relates to the field of environmental protection, energy saving and salt chemical industry, in particular to a slope crystallization and solid-liquid separation system. The slope crystallization and solid-liquid separation system comprises a brine buffer pool, a slope crystallization system and a solid-liquid separation system, the brine buffer pool is arranged below the slope crystallization system, and the brine buffer pool is connected with a brine distribution system arranged at the top of the slope crystallization system. Brine in the brine buffer pool is lifted and distributed to the top of the slope, so that the brine forms a falling film in the vertical flowing process of the slope and is quickly evaporated or frozen and crystallized, and high-purity salt nitrate crystals are obtained through precipitation in the slope bottom solid-liquid separation system and can be automatically conveyed to an external device. According to the invention, a larger interface can be provided for energy and substance exchange between brine and air through the slope crystallization system, so that the brine quickly reaches the environment or slope surface temperature, and the evaporation effect is greatly improved in comparison with that in a traditional crystallization pond or a frozen nitrate pond.

The invention relates to a concrete pavement crushing treatment integrated system and belongs to the technical field of road engineering.The top of one side of a pavement crusher body is fixedly connected with a water tank, the bottom of the water tank is fixedly connected with a fixing frame, and one side of the fixing frame is fixedly connected to the pavement crusher body; a supporting frame is fixedly connected to the bottom of one side of the fixing frame and located at the bottom of the pavement crusher body, one side of the top of the supporting frame is fixedly connected to the bottom of the pavement crusher body through a connecting plate, and supporting plates are fixedly connected to the front face and the back face of the pavement crusher body correspondingly. According to the system, broken stones can be collected and smashed, classified collection can be directly conducted in the device according to the particle size, follow-up direct use is facilitated, the road surface on which the vehicle passes can be clean, meanwhile, the integrated assembly line operation of separation, screening and disposal is achieved, and the working efficiency of the device is improved.

The invention discloses a coal ash sieving device with a drying function. The coal ash sieving device comprises a base. A sieving box is fixedly arranged at the top of the base through a support. Thebottom of the sieving box is in a square funnel shape. A discharge pipe is fixedly connected to a bottom discharge outlet of the sieving box. A support plate is fixedly arranged in the sieving box. The left side and the right side of the support plate are each provided with a rectangular opening. A vertical plate is fixedly connected to the bottom center of the support plate. The left side and theright side of the vertical plate are each provided with a drawer. The drawers are arranged downwards obliquely from inside to outside. The front and rear side walls in the sieving box and the left and right side walls of the vertical plate are each provided with a sliding groove matched with the corresponding drawer. The left and right side walls of the sieving box are provided with openings through which the drawers can penetrate. Openings are formed in the bottoms of the drawers and are fixedly connected with sieves. According to the coal ash sieving device, coal ash is sieved with the sieves, enough fine particles of the coal ahs are ensured, utilization in the later period is convenient, large-particle coal ash outwards slides out of the sieving box, energy conservation and emission reduction are achieved, and resources are recycled effectively.

The invention aims at providing a method for cleaning recycled iron in a wet-process zinc smelting technology. The method is characterized in that a complexing agent, a chelating agent, an ammonioiarosite crystal, ammonium carbonate and a green neutralizer are added in an iron-containing zinc sulfate solution for vanadium precipitating, liquid-solid separation is conducted to obtain an ammonioiarosite precipitate and a zinc sulfate solution, and the ammonioiarosite precipitate is quickly sintered to obtain nanometer ferric sulfate. By means of the method, the problem occurring when valuable metal enters iron vanadium slags can be solved, and clean iron vanadium slags can be obtained.

According to a biogas liquid reducing treatment and a biogas collaborative purification system and purification method disclosed by the present invention, by adding plant ash into the biogas liquid, alkalinity and pH value of the biogas liquid are increased, biogas liquid COD and suspended matter concentration of the biogas liquid are reduced, and by film decompression concentration technology, ammonia is recovered from the biogas liquid and biogas liquid concentration is performed, and therefore an objective of ammonia nitrogen content control in the biogas liquid and biogas liquid reducing treatment is achieved. In the biogas liquid film decompression process, ammonia enrichment can be further achieved, biogas can be desulfurized and decarburized at the same time by using enriched ammonia from the biogas liquid, and therefore preliminary purification of the biogas is achieved, then ammonia gas (NH3) entrained in the biogas is washed and CO2 in the biogas is further absorbed by using concentrated biogas liquid with high pH value, and therefore the biogas is purified and nitrogen content in the biogas liquid is controlled. The present invention can realize the biogas liquid reducing treatment, increase the nutrient content in the biogas liquid, and ensure that the ammonia nitrogen content is in a reasonable utilization range; and meanwhile the present invention is relied on low grade energy, and can therefore reduce costs.

The invention discloses a machinable offshore enteromorpha salvage ship, which comprises a hull, and an enteromorpha collecting device, an enteromorpha dehydrating device, an enteromorpha drying device, an enteromorpha pulverizing device, and an enteromorpha collecting device are sequentially installed on the cleaning ship , Enteromorpha dehydration device, Enteromorpha drying device and Enteromorpha crushing device are all equipped with drive motors. The cleaning ship uses a mechanized enteromorpha collection device instead of fishing nets, which reduces manpower and improves fishing efficiency. The Enteromorpha salvaged from the ship undergoes dehydration, drying, crushing and other processing operations on board to form Enteromorpha powder with extremely low impurity content, which can be used as animal feed and bring huge economic benefits.

The invention provides a data analysis project management method and device and a project management system.The method comprises the steps that a directory structure of a data analysis project and a corresponding data analysis script are obtained, the directory structure comprises a plurality of sub-directories, and the sub-directories are used for storing data analysis results; the directory structure is determined according to a data analysis result calling demand of the data analysis project, and the data analysis script is developed according to the directory structure; calling a data analysis script, and performing data analysis on the target data of the data analysis item to obtain a target data analysis result; and storing the target data analysis result into the corresponding subdirectory. The method solves the problem of non-uniform data analysis result storage directory structure in the prior art.

The invention discloses an ecological restoration box for soil. The ecological restoration box comprises a box body, a stirrer, a restoration liquid feeding main pipe, a heating device and a purification and exhaust device, wherein multiple restoration liquid feeding branch pipes are arranged at one section, which extend into the box body, of the restoration liquid feeding main pipe; multiple liquid leaking holes are formed in the restoration liquid feeding branch pipes; the stirrer comprises a motor, a stirring shaft and multiple groups of impellers; the purification and exhaust device comprises a cover body and an exhaust pipe connected with the cover body; an active carbon adsorption layer, a packing layer and a water barrier layer are arranged in the exhaust pipe in sequence accordingto a flowing direction of gas; the water barrier layer consists of a plurality of water baffle plates; and each water baffle plate is formed by connecting two groups of V-sectional baffle plates end to end. During restoration of the soil by the ecological restoration box, the soil is loose, cannot be hardened and maintains certain humidity; and furthermore, toxic or polluting gas generated in a restoration process is discharged after being treated, so that secondary pollution to air is avoided.

The invention provides an interface test management method, device and equipment and a storage medium, and the method comprises the steps: connecting an application interface library which is used forstoring a to-be-tested application interface, receiving a first test request, and storing the first test request in the application interface library; testing the to-be-tested application interface according to the first test request, obtaining an interface test result, obtaining a to-be-tested function interface according to the to-be-tested application interface when the interface test result shows that the test is passed, receiving a second test request, and testing the functional interface to be tested according to the second test request. Through the method, the purposes of improving thetest efficiency in the whole software test process and reducing the positioning cost of software problems can be achieved.

The invention provides a manufacturing method for R-Fe-N permanent magnet material granules. The method comprises the steps that powdery R-Fe-N permanent magnet materials are used as raw materials, low-temperature dry method ball-milling treatment is performed on the powdery R-Fe-N permanent magnet materials, and the ball-milling temperature ranges from 0 to 196 DEG C; and the R-Fe-N permanent magnet material granules are obtained. Compared with an existing ball-milling method, decomposition of raw materials in the ball-milling process is reduced, decrystallization of the raw materials is restrained, the granules are better refined, the ball-milling efficiency is improved, meanwhile, the oxygen content is decreased, and the R-Fe-N permanent magnet material granules with the higher performance are obtained.

The invention discloses a process of enriching nutritional components of sea cucumber processing liquid. The process comprises the following steps: filtering and centrifuging the sea cucumber processing liquid, adding NaHCO3, Na2CO3 and a mixed solution, adding a HCl solution of 0.2 to 0.5 moL / L, putting into a PDMS membrane bioreactor, and performing pervaporization to obtain concentrated liquid;and sterilizing the concentrated liquid by a pasteurization method and performing cold storage at 4 DEG C for later use. The sea cucumber processing liquid is treated by the process provided by the invention, so that the nutritional components of the sea cucumber processing liquid can be enriched and recycled, the discharged liquid of the treated sea cucumber processing liquid is condensed watervapor, and pollution to the surrounding environment is reduced.

The invention relates to a wave energy pump. The wave energy pump is characterized by comprising a plurality of wave energy collecting floating bodies, a plurality of connecting components used for connecting every two adjacent floating bodies, an anchoring device which is connected at the front end of a first floating body, a plurality of sea water pre-processing devices arranged in the floating bodies, and a high-pressure sea water post-processing device. A single-lug ring and a double-lug ring which are opposite to each two floating bodies are arranged on each connecting component and are connected through a pin shaft, and accordingly the adjacent floating bodies can freely swing in an up-and-down and left-to-right mode. A hydraulic cylinder and a piston rod are connected in each floating body through a ball hinged support, and wave energy is directly and efficiently converted into hydraulic energy by the full utilization of relative movement between every two adjacent floating bodies. The wave energy pump is convenient to assemble and disassemble, when sea circulations with bad wave conditions such as typhoon happen or when the wave energy pump needs to be examined and repaired, floating bodies and the first floating body can be disconnected on the water surface, and the wave energy collecting floating bodies are dragged and transported to a safe sea area to avoid risks or to be examined and repaired. The wave energy pump supplies efficient hydraulic power for sea water desalination, power generation and the like, and can be widely applied to the process of developing sea energy.

The invention discloses cuprous oxide powder and a preparation method thereof. The preparation method of the cuprous oxide powder is as follows: smelting pure copper to a molten state, directly atomizing the copper in the molten state in a nitrogen and oxygen mixed atmosphere for oxidation reaction of the copper and oxygen to obtain the cuprous oxide powder. During production of the cuprous oxide powder by the atomization method, the nitrogen and oxygen mixed atmosphere is introduced for high-temperature oxidation of the pure copper and the oxygen in the atomization process to prepare the cuprous oxide powder, meanwhile because of lack of oxygen, cuprous oxide cannot continue to react with the oxygen to form copper oxide. The preparation steps of the method are efficient, fast and convenient, production steps are saved, the production method of the cuprous oxide powder is broadened; and the cuprous oxide powder prepared by the preparation method has relatively concentrated and uniform particle size distribution and excellent physical properties, and is easy to use later.

The invention discloses sediment filtering environment-friendly utilization equipment, which comprises a housing; a first feeding cavity is formed in the housing; an automatic closing device capable of controlling silt to enter is arranged at the lower end of the left wall of the first feeding cavity; a filtering cavity is formed in the housing and located on the left side of the feeding cavity; aconveying belt which is rotatably connected into the front wall and the rear wall of the filtering cavity and is fixed by two bearing rods is arranged in the filtering cavity; the conveying belt is placed obliquely in the shape of "high left and low right" and the right end of the conveying belt is located at the lower side of the automatic closing device. the equipment is energy saving and environment friendly, and filtered impurities such as silt and pebbles can serve as building sectional materials to be repeatedly used after being stirred and dried through a heat pipe; the usage amount ofcuring agent particles is determined by taking the sludge amount as a benchmark, so that accurate dosing is realized, and waste is reduced; and the conveying belt has a preliminary water control effect on impurities such as stones, and the time and energy required for drying the impurities are reduced.

The invention provides an efficient electric furnace system, belongs to the field of electric melting furnace devices, and aims to solve the problems that in a production process, control over addition of other attachments and addition of attachments cannot meet demands of people, and thus, an electric furnace system is low in working efficiency and narrow in application range. The efficient electric furnace system comprises a feeding device, an additive adding device and an electric furnace device, a discharged material conveying device and an attached product conveying device, wherein the electric furnace device comprises an electric furnace and an electrode; a cloth device is mounted at the upper end of the electric furnace; the lower end of the electrode partially extends into the electric furnace; a stream flowing opening is formed in a side wall of the electric furnace; the discharged material conveying device is provided with a conveying device at an outlet of the electric furnace, and directly conveys discharged materials to a next station for follow-up treatment; the attached product conveying device comprises a track and a trolley; the trolley is mounted on the track; thetrack extends to a molten iron collecting position from the position of the stream flowing opening; and the trolley moves on the track in a reciprocating manner. The efficient electric furnace systemis complete in function, the working efficiency of the electric furnace system is high, a control process is simple and convenient, the use amount is accurate, later-period utilization of products isfacilitated, and meanwhile, waste of raw materials is also avoided.

The invention discloses a coal ash sieving device with a drying function. The coal ash sieving device comprises a base. A sieving box is fixedly arranged at the top of the base through a support. Thebottom of the sieving box is in a square funnel shape. A discharge pipe is fixedly connected to a bottom discharge outlet of the sieving box. A support plate is fixedly arranged in the sieving box. The left side and the right side of the support plate are each provided with a rectangular opening. A vertical plate is fixedly connected to the bottom center of the support plate. The left side and theright side of the vertical plate are each provided with a drawer. The drawers are arranged downwards obliquely from inside to outside. The front and rear side walls in the sieving box and the left and right side walls of the vertical plate are each provided with a sliding groove matched with the corresponding drawer. The left and right side walls of the sieving box are provided with openings through which the drawers can penetrate. Openings are formed in the bottoms of the drawers and are fixedly connected with sieves. According to the coal ash sieving device, coal ash is sieved with the sieves, enough fine particles of the coal ahs are ensured, utilization in the later period is convenient, large-particle coal ash outwards slides out of the sieving box, energy conservation and emission reduction are achieved, and resources are recycled effectively.

The invention relates to a protective agent for improving vulcanization resistant properties of an LED silver element, as well as a preparation method and use method of the protective agent. The protective agent is provided with a repeated structure unit, or a mixture of two kinds, as shown in the following formula. The preparation method of the protective agent comprises the following steps of using a three-necked flask as a reaction container, performing stirring, inletting nitrogen gas, adding 0.1mol of diamine, performing dissolving with 10ml of an N,N-dimethylacetamide polarity solvent, then adding 0.1-0.15mol of dianhydride, and performing a reaction at room temperature for 12-18h. The use method of the protective agent comprises the following steps of placing an LED silver-based plate in a solution, performing soaking for 30s, and then placing the soaked LED silver-based plate in a drying oven of 30-80 DEG C for 0.5-1h. The protective agent as well as the preparation method and use method thereof disclosed by the invention have the advantages that the cost is low, a later stage encapsulate process is not influenced, a synthetic process is simple, and the vulcanization resistant properties of silver are improved.