280results about How to "Prevent bringing in" patented technology

The invention discloses a wet etching method in silicon solar cell production. The method comprises specific steps as follows. (1) A water film protective step. Deionized water is sprayed through a water spray system on a diffusion surface of a silicon wafer so as to form a water film protective layer, and the water film protective layer exists continuously until the silicon wafer completes an etching step. (2) A phosphorus silicon glass removing step. The silicon wafer after the water film protective step enters a hydrofluoric acid groove, the hydrofluoric acid groove is internally provided with hydrofluoric acid solution, the hydrofluoric acid solution is conveyed by a liquid rolling wheel to the back of the silicon wafer, and the phosphorus silicon glass at an edge and surface of the silicon wafer is removed, but the water film protective layer and a right side of the phosphorus silicon glass layer are not affected. (3) The etching step. The silicon wafer after the phosphorus silicon glass removing step enters an etching groove to etch a back and an edge of a PN junction; and the silicon wafer in the etching groove floats on etching solution for etching. According to the invention, the square resistance rise after the etching can be stably controlled, the effective area of the PN junction is increased, and the conversion efficiency of the battery plate improve.

The invention relates to a double-energy X-ray spiral CT system for detecting liquid safety, which comprises a detecting device consisting of an X-ray source, a rotary table, a detector or an interlayer detector and a data acquisition unit, and a control part consisting of a microprocessor and a controller, wherein the front end of the detecting device is provided with the X-ray source; the X-raysource is the switchable high-voltage X-ray source or the fixed high-voltage X-ray source; the middle part of the detecting device is provided with the spiral lifting rotary table used for placing a detected liquid; the rear side of the spiral lifting rotary table is provided with the detector or the interlayer detector; the data acquisition unit is connected with the detector or the interlayer detector; the control part comprises the microprocessor and the controller connected with the microprocessor; the controller is connected with the X-ray source and the spiral lifting rotary table; and the microprocessor is connected with the data acquisition unit. The method comprises irradiation, detection, acquisition, comparison, and obtaining a detection result. The system can detect liquid density and equivalent atomic number and ensures to accurately judge liquid property.

The invention relates to a vacuum-pumping system and a vacuum-pumping method for a large-capacity low-temperature thermal insulating container. The system comprises an air supplying device, a vacuum-pumping device and a heating device, wherein the heating device comprises an outer tank heating device and an inner tank heating device; a thermal insulating container to be pumped comprises an outer tank, an inner tank and an interlayer formed by the outer tank and the inner tank; the outer tank heating device is arranged outside the outer tank of the thermal insulating container to be pumped; the inner tank heating device is arranged inside the thermal insulating container to be pumped; the air supplying device is communicated with each of the inner tank and the interlayer of the thermal insulating container to be pumped through a pipeline; and the vacuum-pumping device is communicated with the inner tank and the interlayer of the thermal insulating container to be pumped by pipelines. The invention provides the vacuum-pumping method for the large-capacity low-temperature thermal insulating container, and with the adoption of the method, the vacuum-pumping period of the container is shortened, and water and oily gas inside the interlayer can be thoroughly replaced with low cost.

The invention discloses a breeding method for a Puan black goat line. The breeding method utilizes foundation Guizhou black nanny goats and Nubia billy goats to bi-cross, first-class first Nubia billy goat-black nanny goat hybrid generation nanny goats chosen as the female parent and first-class Guizhou black billy goats chosen as the male parent backcross, first-class backcrossed filial generation billy goats and first-class nanny goats are chosen to cross to be fixed, and therefore the Puan black goat line with more stable genes is bred. By introducing the excellent genes of the Nubia goats, such as big build, high reproduction rate and fast growth, the breeding method ensures that the bred Puan black goat line has the advantages of big build, fast early growth and development, high reproduction rate, high meat productivity and the like besides the characteristics, such as high adaptability, high disease resistance and black clothing hair, of the Guizhou black goats.

The invention provides a method for planting organic rice. The method comprises the following steps of: planting milk vetch, namely sowing 3.0 to 3.5kg of milk vetch seeds on each mu of land; after the milk vetch enters the initial bloom stage, ploughing and dry-hallowing the land to ensure that the milk vetch is cut into pieces and fully mixed with soil, drying in the sun for 1 to 2 days, and then irrigating water to ret green manure, wherein the retting time is 15 to 20 days; performing land preparation, namely reclaiming ditches to make rectangular land pieces after the land is flattened and the mud is molten; leveling the surfaces of the rectangular land pieces, paving films on the surfaces of the rectangular land pieces, and punching on the surfaces of the rectangular land pieces on which the films are paved after the films are paved for 1 to 3 days; planting rice seedlings in holes of the surfaces of the rectangular land pieces; keeping the rice field in a moistened state, namely keeping water which is lower than the surfaces of the rectangular land pieces in the ditches; and draining away the water and drying the field in the sun 8 to 12 days before the harvest. The method for planting the organic rice has the advantages that: the problem of organic fertilizers can be effectively solved, no weed is grown, plant diseases and insect pests are avoided, planting labor and planting cost are not increased, the high drought-resistant effect is achieved, the management is simple and convenient, the adaptability is strong, and the method is safe and reliable.

The invention discloses a dedusting-denitrating integrated device which comprises a flue gas channel, a mixed flue gas inlet and a shell consisting of an outer cylinder and an inner cylinder, and a ash hopper at the bottom of the shell, wherein the inner cylinder is mainly used for dedusting and ammonia mixing, the outer cylinder is mainly used for containing a denitrating catalyst bed, the crosssection of the flue gas channel is ring-shaped, and ammonia spray grilles are distributed in the flue gas channel in a radial manner so that the required NH3-to-NO ratio can be reached more easily. The device provided by the invention can be used for dedusting before carrying out denitrating, a catalyst can be effectively prevented from being worn, poisoned and blocked and the service life of thecatalyst can be prolonged. Under the condition that the length of the device is not increased, the ammonia mixing time is prolonged and ammonia mixing can be performed fully; heat absorbing spiral plates and cooling rectifier plates are arranged in both the inner cylinder and the outer cylinder to share heat of flue gas at the inlet, and therefore the heat loss of flue gas can be reduced, the denitrating efficiency can be improved and the catalyst is prevented from being sintered and inactivated under the action of superheated flue gas.

A server cabinet is used for containing a plurality of servers and comprises a top plate, a bottom plate, a left side plate, a right side plate, a front side plate and a rear side plate, wherein the bottom plate is opposite to the top plate, and the left side plate, the right side plate, the front side plate and the rear side plate are connected between the top plate and the bottom plate. An air inlet structure and an air outlet structure are arranged in the front and in the rear of the top plate respectively, the air inlet structure comprises an air inlet, the air outlet structure comprises an air outlet, an air inlet passage and an air outlet passage are formed between the front side plate and the front of each server and between the rear side plate and the rear of each server respectively and are communicated with the air inlet and the air outlet respectively, a plurality of air vents are arranged on two opposite side faces of each server, and the air inlet and the air outlet of the server cabinet are communicated with an air-out port and an air-in port of an air conditioning device respectively, so that cold air flow blown by the air conditioning device enters the air inlet passage from the air inlet, flows through the servers through the air vents and then flows into the air conditioning device from the air outlet so as to form airflow circulation.

The invention relates to domestic sewage treatment equipment, especially relates to domestic sewage treatment grating pond grating net cleaning equipment and aims at solving the technical problem of providing the domestic sewage treatment grating pond grating net cleaning equipment which avoids manual fishing and is convenient to use. The domestic sewage treatment grating pond grating net cleaningequipment disclosed by the technical scheme of the invention comprises a grating pond, a top plate, a sealing ring, a speed reducing motor, a first rotating rod, a first bearing support, a second rotating rod, a first conveying roller, a first conveying belt, a first scraper blade and the like, wherein the top plate is arranged above the grating pond, the sealing ring is connected to the lower left part of a front wall of the grating pond, and the speed reducing motor is connected to the lower left part of the front side of the front wall of the grating pond. The domestic sewage treatment grating pond grating net cleaning equipment disclosed by the invention achieves the effects of avoiding manual fishing and being convenient to use; the first scraper blade moving continuously can scrapeimpurities on a grating plate out; furthermore, the moving second conveying belt can send the impurities out, manual fishing the impurities is avoided, and a collecting frame can achieve an impurity collecting effect.

An integrated electronic hydraulic brake system provided with an actuator including a master cylinder and a pedal simulator, an electronic stability control (ESC) and a hydraulic power unit (HPU) in a single unit.

The invention belongs to the technical field of artificial oxygen input equipment, and relates to a disposable sterile PP (polypropylene) humidification bottle and a manufacturing process thereof. The humidification bottle comprises a bottle body and a bottle cover installed on the upper end of the bottle body, wherein an oxygen input pipe and an oxygen output pipe communicated with an inner cavity of the bottle body are arranged at the upper side of the bottle cover, the oxygen input pipe is extended to the bottom of the bottle body and a gap is formed between the oxygen input pipe and the bottom of the bottle body, both the ends of the oxygen input pipe and the oxygen output pipe at the upper side of the bottle cover are provided with end caps which are easily broken, an air filtering device is arranged at the lower end of the oxygen input pipe, and humidification liquid for humidifying oxygen is filled in the bottle body and accounts for 60-80% of the capacity of the inner cavity of the bottle body. The manufacturing process of the humidification bottle comprises the steps of: producing purified water; manufacturing the bottle cover with the oxygen input pipe and the oxygen output pipe, a bottle body, a sleeve, an air filtering device and a dustproof protective sheath; sterilizing at high temperature; and packaging and warehousing for future use, and the like. The manufacturing process is simple and practical, and the product is low in noise, free from nose irritation, simple, safe and healthful in structure and suitable for the use as a disposable humidification bottle for patient oxygen inhalation.

The invention relates to intermediate infrared anhydrous fluorine tellurate laser glass and a preparation method thereof. The intermediate infrared anhydrous fluorine tellurate laser glass is prepared from 50-85 mol percent of TeO2, 5-45 mol percent of ZnF2 or BaF2, 0-20 mol percent of ZnO, 0-20 mol percent of sodium ion compound or potassium ion compound and 0.1-2 mass percent of erbium ion compound. The invention provides the intermediate infrared anhydrous fluorine tellurate laser glass which can generate strong intermediate infrared luminescence and is expected to be applied to medicine, bioindustry and economic construction, as well as a preparation method of the intermediate infrared anhydrous fluorine tellurate laser glass.

The invention discloses a method for treating water of a polluted water source by using a double-stage aeration bio-filter, which relates to a method for treating the water of the polluted water source. The method solves the problems of easy blockage, easy production of secondary pollution and poor removal effect in the conventional method for treating the water of the polluted water source by using an aeration bio-filter process. The method comprises the following steps: allowing the water of the polluted water source to be treated to enter the double-stage aeration bio-filter, making the water flow upwards and aerating at the same time, controlling the hydraulic retention time so as to realize the treatment for the water of the polluted water source. When the water of the polluted water source is treated and the lightweight carrier of the lower stage is in a fluidized state, organic substances and intercepted suspensions can be efficiently removed, so the problem that the filler of the upper stage is easy to block due to small grain diameter is solved; meanwhile, because the natural clinoptilolite at the upper stage has large specific surface area, the removal rate of ammonia nitrogen is high, and the purpose of efficiently removing the ammonia nitrogen and the organic substances at the same time can be achieved; and moreover, the back flushing period is long and the secondary pollution cannot be caused.

The invention discloses a debridement sterile nursing device applicable to a general surgery department. The debridement sterile nursing device comprises a device body, the device body is internally provided with a placement chamber, a cleaning chamber, a disinfection chamber, a sterilization chamber and a storage chamber in communication. A cleaning table is arranged in the cleaning chamber, a sleeve and an inclined anti-shedding plate are arranged at two ends of the cleaning table respectively, a support is arranged under the cleaning table, and a cleaning rotating shaft is arranged in the cleaning chamber and penetrates the sleeve. A telescopic air cylinder is arranged on the support, an output end of the telescopic air cylinder is hinged to the lower end face of the cleaning table in ameshed structure, and a plurality of cleaning nozzles are arranged above and below the cleaning table and fixed to the inner wall of the cleaning chamber. The debridement sterile nursing device has advantages that surgical instruments can be deeply disinfected and sterilized to guarantee surgical quality, sterile storage of the surgical instruments is realized, and the surgical instruments are stored orderly and convenient to take out.

The invention provides a sewage plant and recycled water plant in-situ sampling and on-line test device and an operation method of the sewage plant and recycled water plant in-situ sampling and on-line test device, and belongs to the technical field of in-situ sampling and test devices. The bottom surface of a conical drill is fixedly connected with a cylindrical sampling rod in a sealing mode, a sampling opening is formed in the lateral side of the bottom end of the sampling rod, a baffle serves as a switch of the sampling opening, and the top of the baffle is connected with a metal rod connected with a handle; a hole plate filter screen is arranged above the sampling opening and is communicated with a silicone tube, and the silicone tube is connected with a water collecting device through a peristaltic pump; the water collecting device is provided with a probe in a sealed mode, and the probe is connected with an instrument. The drill is extended to an appointed depth under a liquid surface, and then the handle is pulled upwards to make the baffle and the sampling opening staggered, a water sample in an in-situ point to be tested flows into the sampling rod under the action of pressure, is filtered through the hole plate filter screen in the rod and then enters the silicone tube, and then the peristaltic pump is opened, and all kinds of indexes of the water sample entering the water collecting device are measured through the probe in real time. The method is flexible, simple, accurate, safe and reliable.

The invention discloses a handling method for reducing the excess liquid steel in continuous casting bakie, it belongs to black metallurgy continuous casting technology. The to solve technical problem is: the steel slag entraps liquid steel with the orifice vortex flow and entraps into crystallizer in the continuous casting bakie casting process, so the steel slag amount of tunic is big, excess liquid steel is more, so the metal yield rate is influenced. The adopted solving technical project is: reducing the liquid temperature around casting nozzle through changing the nature of liquid steel slag in bakie and increasing the basic capacity and viscosity, reducing slag amount, improving end blank section liquid steel consolidation, reducing excess liquid steel 20% and increasing metal yield rate 0.57%. The handling method is easy to operate and reduces large fireproof material consumption, avoids so-called wobbling-steel accidents, it is easy to operate, safe and reliable.

The invention discloses a sewage treatment device for a large-scale sewage treatment station. The sewage treatment device comprises a filtering device, a regulating hydrolysis tank, a grade-A biochemical tank, a grade-O biochemical tank, a precipitation tank, an improved coagulation system, a disinfection tank, a sludge thickening tank, oxygenation equipment and a gas stripping device, wherein the filtering device, the regulating hydrolysis tank, the grade-A biochemical tank, the grade-O biochemical tank, the precipitation tank, the improved coagulation system and the disinfection tank are connected with one another in sequence from front to back; the gas stripping device is a pulse gas stripping device which is used for stripping one part of sludge precipitated in the precipitation tank into the sludge thickening tank, and the other part of the sludge precipitated in the precipitation tank into the grade-A biochemical tank; the grade-O biochemical tank is provided with the oxygenation equipment which is a centrifugal blower. The invention also provides a sewage treatment method for the large-scale sewage treatment station. The sewage treatment device disclosed by the invention has the advantages of being full in filtration and high in treatment efficiency of precipitated sludge, saving the floor area, and having an integrated function of regulation and decomposition.

The invention discloses a metal 3D printing one-stop powder recovery and purification device and a method, and solves the problem of low powder recovery efficiency after traditional metal 3D printing.The recovery device comprises a cyclone separator communicating with a recovery sucking pipe and used for separating light impurities from recovered powder, a recovery cylinder communicating with thecyclone separator, a screening device for screening away large particles, and a new powder inlet formed between the cyclone separator and the screening device for feeding new powder. The recovery device greatly improves the powder recovery efficiency, saves the cost, and is suitable for various machine types on the market.

The invention provides a vortex direct contact ice maker, characterized in that: ice making container is connected smoothly of the upper half part of cylindrical flow stabilizing cavity and the lower half part of conic separating cavity, the center of top end cover of the ice making container is equipped with funnel ice slurry outlet and the bottom equipped with cryogen outlet, the top of the flow stabilizing cavity is respectively equipped with pairs of uniformly separated and symmetrically distributed secondary refrigerant and water solution spray nozzles in the tangent direction of the cylinder wall; when making ice slurry, the secondary refrigerant and water solution injected into the flow stabilizing cavity form vortex and fully mix and exchange heat with each other to make a part of water solution turn into ice slurry, and they are respectively separated and discharged under the action of centrifugal force of the vortex and gravity. And the ice maker solves the problem of separation of ice slurry from water solution and secondary refrigerant, avoiding ice jam happening caused by adhesion of ice slurry particles and the problems of large secondary refrigerant dosage caused by carrying secondary refrigerant and ice slurry into ice storage cylinder and of carrying water solution into plate heat exchanger, further improving the efficiency and running stability.

The present invention discloses a dishwasher, and a control method and apparatus thereof. The method comprises: obtaining first image information of an object in the dishwasher; identifying the firstimage information based on a detection model, and determining the category of the object, wherein the detection model is obtained through machine learning training according to multiple sets of data,and each set of data in the multiple sets of data comprises: the first image information of the object and a category to which the object belongs; and determining a placement area to which the objectbelongs according to a classification result of the object. The technical scheme of the present invention solves the technical problem that in the prior art, the tableware in the dishwasher needs to be manually placed.

The present invention provides a discharge lamp, which can prevent lamp component from damage caused by the slot part edge of the anode of the discharge lamp for heat radiation. Two or three cones are formed between the front end surface and the main surface of the anode (10). The second inclination from the front end surface of the cone opposite to the axis is minimum and the third inclination is maximum. A plurality of radial slot parts are arranged till to the second cone region. The main surface has no slot part edge, because the slot part does not arrive to the main surface of the anode (10). In the assembling working procedure of the discharge lamp (1), even the main surface contacts with the lamp component, the slot part edge can not damage the lamp component. The slot part is used for inhibiting rock of an arc, and for preventing lamp from blackening due to the heat radiation effect can inhibit consumption of the anode, thus prolonging the service lifetime of the discharge lamp, and the slot part can also be a safe part during assembling working procedure.

The invention discloses antibiosis anti-mite comfortable breathable underwear fabric and a manufacturing method thereof. The antibiosis anti-mite comfortable breathable underwear fabric is woven by warp yarns and weft yarns. The warp yarns are woven by, by mass, 60%-70% of colored cotton and 30%-40% of silver-loaded calcium alginate fibers in a blended mode. The weft yarns are woven by, by mass, 40%-60% of bamboo fibers, 20%-30% of silk fibers and 10%-20% of milk fibers in a blended mode. Besides, the invention specifically discloses the manufacturing method of the antibiosis anti-mite comfortable breathable underwear fabric. The manufacturing method comprises the steps of (1) spinning, (2) weaving, (3) antibiosis dipping finishing and (4) drying. The components of an antibiotic finishing agent are provided. The antibiosis anti-mite comfortable breathable underwear fabric obtained has the functions of antibiosis and anti-mite, radiation protection, deodorization, static electricity protection, comfort and softness, dryness and breathability and warmth retention, is suitable for wearing inside, is poisonless and harmless, and is endowed with excellent durable antibiosis property after the antibiosis dipping finishing.

The invention concretely relates to reinjection technique of geothermal well of geothermal resource exploitation and utilization engineering can be used in geothermy tertiary sandstone reinjection collar system mainly use two-staged coarse filter group4 reinjection system linked in series of coarse filter group and secondary filter group with parallel connection, pressurizing reinjection pump and enforced exhaust tank geothermic fluid flows into the first stage of coarse filter group with filtration accuracy of 50 to 80mum, then the second stage of secondary filter group with filtration accuracy of 3to5mum, the filter element material is the third generation polyethylene sintered filter element or filtration bag, after two filtration stages water quality can be guaranteed basically. The invention can prevent air resistance caused by physical, microbe, chemical factors, increase microbe higher than 30%. The system is installed and adjusted conveniently, maintained simple, its monitoring method complete, although it is aimed at sandstone formation, it can also be adopted for other layer like and can exploit and utilize tertiary geothermal resource reasonably.

The present invention discloses a boiler flue dust purification system, which comprises a flue exhaust pipeline connected with a steam boiler, a flue exhaust air blower, a water purification pool, and a bottom-free flue dust purification device positioned on the water purification pool, wherein the side surface on the lower end of the flue dust purification device is connected with the flue exhaust pipeline, the flue dust purification device is sequentially provided with a flue dust filtration device, a spraying device and a harmful gas filtration device from bottom to top, the top portion of the flue dust purification device is provided with a purified gas discharge port, the spraying device is connected with a submersible pump positioned in the water purification pool through a water supply pipe, the outer periphery of the submersible pump is provided with a filtration screen, and the water purification pool edge positioned on one side of the submersible pump is provided with a water supply valve. According to the present invention, the boiler flue dust purification system has characteristics of low investment cost, complete purification of flue dust, sulfur dioxide and other harmful gases in boiler waste gas, and broad development prospects.

The invention provides a solar potable water preparation system and a method for preparing potable water by using the solar potable water preparation system, which aims to overcome the defects that when hot water is prepared by a solar water heater in the prior art, water scales and deposits are easily formed, nitrite is produced, and the potable water standard cannot be achieved. The solar potable water preparation system comprises a heat gathering system, a water storage system, a water system and an electric control system, wherein the water outlet temperature of the heat gathering system, the water level of the water storage system, and the water temperature and water level of the water system are controlled by the electric control system. By using the solar potable water preparation system and the method for preparing the potable water, the production of the nitrite can be prevented or effectively reduced, thereby obtaining the potable water which achieves the potable water standard.

The invention belongs to the technical field of well covers in municipal engineering and particularly relates to a labyrinth type anti-theft and anti-blocking well cover used for municipal engineering. The labyrinth type anti-theft and anti-blocking well cover comprises well-wall labyrinths and an anti-blocking well cover, wherein two completely-same well-wall labyrinths are circumferentially and uniformly distributed on the inner circle surface of the well wall; by the designed well-wall labyrinths, stealers can be prevented from stealing; and due to arrangement of the anti-blocking well cover, foreign matters such as leaves and dust can be prevented from being taken into a well and blocking the well when raining. When a non-staff rotates the well cover, the well cover can move along a wrong channel, and when the non-staff moves a supporting column downwards at a third vertical cavity, due to bad mastering for the force, a locking block arranged in a locking block hole is contacted, and further a cavity in the inner circle surface of the well wall is locked; and when the well cover is moved by a person and is not at the initial position, a staff can find the initial position of the supporting column by matching of a marking block at the upper end of the well wall and a marking block at the upper end of the well cover, so that unlocking is achieved. The labyrinth type anti-theft and anti-blocking well cover has better anti-theft effect.

The invention provides an oil storage barrel comprising an oil barrel and an oil barrel cover mounted on the oil barrel. The oil storage barrel is characterized in that two CPCs (Circular Plastic Connectors) are fixed on the oil barrel cover, wherein the lower end of one CPC is connected with a relatively longer internally connected oil pipe which is inserted in the oil body of the oil barrel and is close to the bottom of the oil barrel; and the lower end of the other CPC is connected with a relatively shorter internally connected oil pipe which is exposed on the oil surface. By adopting the CPCs in the invention, the oil barrel cover is prevented from being fully opened so as to reduce introduced oxygen, effectively prevent oil oxidation and achieve convenience in use, and liquid leakage is avoided after multiple uses, thus, the problem of oil oxidation and deterioration caused in processes of filling, transporting, sampling, storing, using, and the like by oil production enterprises is effectively solved, oxygen is prevented from being introduced into the oil barrel after the oil barrel cover is opened and oil sampling and oil detecting are convenient.

The invention belongs to the technical field of regulating valves and provides a valve with the adjustable opening and closing frequency. The valve comprises a valve body. A water inflow cavity in the valve body is connected with a water outflow cavity through a valve port. A valve element is installed at the valve port and driven by a valve rod to open and close the valve port. The valve further comprises an execution mechanism and a feedback mechanism. The feedback mechanism comprises an impeller arranged in the water inflow cavity. A rotary shaft of the impeller is in key connection with a bevel gear. An installation seat is welded to the top face of the upper cover and rotationally matched with a transverse rod. A conic tooth at one end of the transverse rod is meshed with the bevel gear and a cam making contact with an idler wheel is fixed to the other end of the transverse rod. By the adoption of the valve, the rotating speed of the impeller can be directly adjusted according to the water flow speed, when the water flow speed is large, the opening frequency of the valve element is high, in other words, the moving speed of the valve element is high, and when the water flow speed is low, the opening frequency of the valve element is low, and in other words, the moving speed of the valve element is low. The moving speed of the valve element can be adjusted according to the water flow speed, so that the valve port is intermittently controlled to be opened and closed.

The invention discloses a process for preparing nutrition-containing soilless cultivation base material which comprises, stock preparation, calcinations, acid conventional processing, purification, replacing some substance in the zeolite aperture by means of dynamic reaction, cleaning again, adsorbing potassium sulphate, boric acid and other nourishing material completely in the zeolite, cleaning again, adjusting pH by charging acid, drying and packaging.

The invention relates to a device and method for comprehensively utilizing construction waste, and belongs to the technical field of construction waste disposal. The device comprises a machine frame.A pulverizing machine for pulverizing the construction waste is arranged on the machine frame. The pulverizing machine comprises a feed port and a discharge port. A screening plate is arranged on themachine frame and located under the discharge port. A pressing roller is arranged on the screening plate. An electromagnet is arranged in the pressing roller. A recovery hopper is arranged on one sideof the screening plate. A discharge hopper is arranged under the screening plate. A driving piece for driving the pressing roller to get close to or away from the recovery hopper is arranged on the machine frame. The driving piece drives the pressing roller to roll on the screening plate so as to further crush the construction waste; scrap iron in the construction waste is attracted to the surface of the pressing roller through the electromagnet, and other construction waste falls into the discharge hopper through the screening plate; and the aim of sorting out the scrap iron is realized, andthe scrap iron can be conveniently recovered.