34results about How to "Achieve efflux" patented technology

The invention provides a method for preparing natural gas by dry quenching co-production coal. In the method, reducing gas is taken as heat-carrying gas, refrigerant and a pyrolytic process thereof are adopted to recover a great quantity of sensible heat of high-temperature coke so as to couple the dry-method coke quenching process and the coal pyrolytic process of high-temperature metallurgical coke, thus cancelling a gas and air supply system, a combustion control system and a waste gas discharging system in the original pyrolytic process, avoiding pyrolytic combustion process, saving a great quantity of energy, and realizing smoke-free, NOX-free, SOX-free and CO2-free discharging. Meanwhile, gasification gas produced by pyrolytic gas and semi-coke gasification is used for producing andsynthetizing natural gas in a methanation manner so as to realize clean conversion of coal. In addition, the method cancels N2 preparation equipment and waste heat boiler systems in dry quenching, thus simplifying the operation and maintenance process and greatly lowering investment and operation cost.

The invention discloses a technological method for degrading feces from livestock and poultry by using complex microbial communities, and relates to the technical field of environment-friendly biological treatment. The technological method comprises the steps that 1, the complex communities are put on stacked materials formed through the combination of sawdust, straw, rice husk and other agricultural wastes for even mixing, wherein the moisture is controlled to 30-35%, and the standing time is 12-24 hours; 2, the well-stirred feces from livestock and poultry are sprayed on the stacked materials in the first step, the mixture is fully and uniformly stirred, the water content is adjusted to 55-65%, and stacking fermentation is conducted for 24-48 hours, wherein the complex microbial communities include fecal alkali-producing bacteria, nitrification and denitrification bacteria, autotrophy sulfuration and deodorization bacteria, low-temperature heterotrophic bacteria, actinomycetes, thermophilic bacteria, cellulose decomposition bacteria and bacillus subtilis. By means of the technological method, the hazards of foul gas, sewage and excrement in the feces from livestock and poultry to the environment are solved fundamentally, zero release and zero pollution are achieved, no bad smell, no waste residue and no waste water are discharged, meanwhile, the residual stacked materials can be prepared into organic fertilizers, and waste materials are turned into wealth and recycled.

The invention discloses a method for preparing high-purity barium salt by using witherite-barytocalcite industrial waste residues. The method comprises a crushing and grinding procedure, an acid hydrolysis and leaching procedure, an impurity removal and purification procedure, an evaporation, concentration and crystallization procedure, a coarse washing procedure, a fine washing procedure and a drying, testing and packaging procedure. The barium salt with the high product purity and the low impurity content can be prepared with the method, and barium can be recovered efficiently. Meanwhile, high-temperature operation is not required by the whole-wet technology adopted in the method, reaction conditions are mild, the energy consumption is low, three-waste emission is low, thus, clean production and comprehensive utilization in the witherite-barytocalcite industrial waste residue deep-processing field can be further realized, and the economic benefit and the environmental benefit are significant.

The invention discloses a water conveying device for a high floor. The water conveying device comprises a main hollow housing. According to the water conveying device disclosed by the invention, a turbine element is changed to be in a longitudinal direction and realizes controllable pressure conveying, so the water conveying efficiency is obviously improved, water can be conveyed to a higher distance, repeated conveying is reduced, and high practicability is realized; moreover, the water conveying device comprises a first large-size pressure liquid one-way flowing control mechanism which can realize that the liquid enters a liquid compression position in one direction from a water storage position; besides, the water conveying device comprises a second large-size pressure liquid one-way flowing control mechanism; by utilizing the characteristics of the first large-size pressure liquid one-way flowing control mechanism and the second large-size pressure liquid one-way flowing control mechanism, a discharging effect is achieved; moreover, the water conveying device comprises a maximum rotation force control and protection mechanism and a universal rotating connecting mechanism, wherein the universal rotating connecting mechanism can be used for connecting a longitudinal moving component and a component which moves in a rotation angle, thus the movement direction of the componentis changed, and a liquid compression driving effect is achieved.

The invention discloses a process method and device for advanced treatment of nitrate nitrogen in water, and belongs to the field of nitrate nitrogen wastewater treatment processes. Nitrate nitrogen wastewater is absorbed through a macromolecular nitrate nitrogen adsorbent to obtain nitrate-removed effluent, and the nitrate-removed effluent is discharged after the nitrate-removed effluent is detected to reach the standard; when the effluent does not reach the standard, a sodium chloride solution with the mass percentage concentration of 35% is added into the macromolecular nitrate nitrogen adsorbent for regeneration, a self-activity denitrification process is conducted after obtained regenerated waste liquid is diluted, and the effluent obtained after the self-activity denitrification process is sequentially subjected to ultrafiltration, reverse osmosis and electrodialysis concentration to serve as fresh regenerated liquid; and both the reverse osmosis fresh water and the electrodialysis fresh water are used as diluents of regenerated waste liquid. The process is high in automation degree, easy to manage, small in equipment investment and low in operation cost. According to the method, the macromolecular nitrate nitrogen adsorbent is adopted to adsorb nitrate nitrogen in the water, the regenerated waste liquid is filtered out through self-activity denitrification, and the method has the advantages that no waste liquid or waste gas is discharged, and the process cleanliness is high.

The invention discloses a sewage settling tank, comprising a tank body; a mixing barrel, which has a conical tubular structure and is provided with an opening at the lower end, is arranged at the central axis position of the tank body, and a vertical water outlet pipe is arranged at the central axis position of the mixing barrel; a mixing plate is arranged at the upper end of the vertical water outlet pipe, and is fixedly connected with a center shaft; the center shaft is fixedly connected with liquid outlet pipes which are distributed along the circumference and are communicated with the center shaft. By arranging the vertical water outlet pipe and the liquid outlet pipes, which are arranged opposite to each other, as well as the mixing barrel having the conical tubular structure, the mixing plate and the rotating center shaft, swirling flow is formed under the stirring of the mixing plate during head-on collision and mixing of a precipitant and sewage, so that the efficiency of flocculating precipitation is increased, the volumes of precipitate flocculation blocks are enlarged, and the generation of subsequent precipitate is facilitated; by arranging a vertical helical blade roller and a horizontal helical blade roller which are linked with each other, the sludge can be discharged outside, and a sludge discharge pipe is prevented from being blocked.

The invention provides a sewage flocculation and blow-down system and belongs to the technical field of sewage treatment. The sewage flocculation and blow-down system comprises a sewage and flocculating agent leading-in pipeline (1), a tank body (2), a bracket (3), a double-grade agitator (4), a water collection groove (5), an overflowing groove (6), a spiral umbrella-type cover body I (7), a spiral umbrella-type cover body II (8), a precipitator (9), a water quality monitoring device, a dirt collection barrel (12), a centrifuging drying machine (13) and an equipment adjusting central processor. The sewage flocculation and blow-down system can be used for realizing fixed-period automatic control blow-down so that the flocculation and blow-down system can be prevented from being frequently started and stopped and a liquid supernatant can be continuously overflowed and stored.

The invention relates to a process for preparing a fertilizer product by resourceful treatment of fermentation waste residues of tetracyclic antibiotics. The process comprises the following steps: (1)heating, stirring, activating, size mixing and dispersing the fermentation waste residues containing tetracyclic antibiotics to obtain waste residue slurry; (2) adding a digestion agent and a coupling agent into the waste residue slurry, carrying out a digestion reaction, and carrying out solid-liquid separation after the reaction is completed to respectively obtain a recyclable solid raw material and a filtrate; (3) carrying out substance recycling on the filtrate part, wherein high-temperature energy generated in the digestion reaction process can be returned to the step (1) to realize energy recycling; and (4) blending, stirring and granulating the recyclable solid raw material and auxiliary materials to obtain the fertilizer product. Compared with the prior art, the process has the advantages that antibiotic residues and resistance genes in the tetracyclic antibiotic fungi residues can be effectively removed, the environmental risk is reduced, in addition, filtrate recycling and energy recycling are achieved, energy is saved, consumption is reduced, three-waste pollution is effectively reduced, and green cyclic development is achieved.

The invention relates to the technical field of water conservancy projects, in particular to an automatic adjusting type water gate device for a water conservancy project. The problems that water channels are prone to being blocked by garbage in the irrigation channel, the garbage can enter irrigated farmland along with water flow, and growth of crops is affected are solved; the problems that an existing water gate is simple in function, and solids in water cannot be cleaned are solved. An automatic adjusting type water gate device for a water conservancy project comprises a first fixing plate, a garbage intercepting system and the like. The first fixing plate is connected with a garbage intercepting system. By means of switching between the first object blocking net and the second object blocking net, garbage and floating objects are intercepted in real time in the gate opening and water discharging process, and meanwhile residual garbage and floating objects on the second object blocking net are cleared away by means of real-time rotation of the cleaner; by means of the arc design of the retarder, large stones are retarded and intercepted, so that the stones cannot cross the retarder and are prevented from being gathered at the bottom of the flashboard to affect closing of the flashboard, and the sealing effect of the flashboard is improved.

The invention provides a self-cleaning bus stop. The upper end of a vertical frame is fixedly provided with a ceiling, the upper part of the end, away from the vertical frame, of the ceiling is fixedly connected with a water spraying pipeline, and the length direction of the water spraying pipeline is the same as that of the ceiling; a plurality of water spraying nozzles are uniformly arranged onthe right lower part, facing towards the ceiling, of the water spraying pipeline in the length direction of the water spraying pipeline; a water collecting tank with an upper end opening is fixedly connected to the side, away from the ceiling, of the vertical frame, the lower part of the water collecting tank is of an inverted frustum shape, and the lower end of the water collecting tank is connected with a mud discharging pipeline arranged vertically; first and second filter screens are successively arranged in the water collecting tank from top to bottom; and the outer side of the water collecting tank is fixedly connected with a water pump, a water inlet pipeline connected with the water inlet end of the water pump penetrates into the water collecting tank, and a water supply pipeline connected with the water outlet end of the water pump is connected with one end of the water spraying pipeline. The bus platform is provided with a cleaning device, manual ascent is not required for cleaning operation, the labor amount of cleaning personnel can be effectively saved, and potential safety hazards during cleaning are avoided.

The invention relates to a cooking device and an integrated cooker with the cooking device. The cooking device comprises an inner container with an exhaust port; the inner container is further provided with an exhaust port for exhausting air outwards from the inner container; the cooking device further comprises an air pump; the air pump comprises a shell with an exhaust air inlet and an exhaust air outlet; the exhaust air inletis in fluid communication with the exhaust port of the inner container; the exhaust air outlet communicates with the outside; axial flow fan blades and centrifugal fan blades which are coaxially arranged are installed in the shell and arranged between the exhaust air inlet and the exhaust air outlet; the axial flow fan blades are adjacent to the exhaust air inlet, and the centrifugal fan blades are adjacent to the exhaust air outlet. Compared with the prior art, gas in the inner container can be extracted outwards through the extraction port, the exhaust efficiency of the inner container is improved, and the requirement for external extraction of high-oil-smoke gas in a baking mode and high-moisture gas in a steaming mode is met.

The invention discloses a method for treating a gallium electrolysis tail liquid. The gallium electrolysis tail liquid is an electrolysis tail liquid produced in a gallium extraction process by adopting a resin method; in the resin method, leacheate is prepared from NaOH and Na2S, and the method for treating the gallium electrolysis tail liquid comprises the following steps: after electrolysis, adding solid sodium hydroxide into the electrolysis tail liquid until NaOH content in the electrolysis tail liquid is more than or equal to 400g / L; after Na2SO4 in the electrolysis tail liquid is separated out in a precipitate form, filtering, and returning filtrate for preparing the leacheate. The method for treating the gallium electrolysis tail liquid has the advantages that the normal leaching and electrolysis are guaranteed, a normal gallium extraction technological process is further guaranteed, electrolysis condition is good, the usage amount of NaOH in production is reduced, recycling of the electrolysis tail liquid is realized, and no electrolysis tail liquid is discharged; and the technological process is simple, has high operability and can be carried out very easily.

The invention discloses a sounding tube dredging device which comprises a base, wherein a center rotary drum is arranged on the base, an inhaul cable is wound on the center rotary drum, the end of the inhaul cable is connected with a gravity hammer, the gravity hammer comprises a cylinder, one end of the cylinder is connected with the inhaul cable, and the other end of the cylinder is open and forms a sharp impact end. According to the sounding tube dredging device, the gravity hammer is arranged to be cylindrical, one end of the gravity hammer forms a sharp impact end to achieve impact dredging of the sounding tube; and meanwhile, the inner side space of the cylinder forms the clamping space of an impacted object, so that the impacted object is taken out of the sounding tube; in this way, the gravity hammer can achieve impacting and can also achieve discharging of impacted objects.

The invention relates to a regeneration refining process for waste lubricating oil. A raw material tank is connected with a raw material pump, the outlet of the raw material pump is connected with thelower part of a primary extraction tower after passing through a raw material heat exchanger; the tower top of the primary extraction tower is connected with the lower part of a secondary extractiontower, the tower top of the secondary extraction tower is connected with a solvent settling tank, the solvent settling tank is connected with a first heating furnace, the first heating furnace is connected with the upper part of a lubricating oil flash tower, the bottom of the lubricating oil flash tower is connected with a lubricating oil flash bottom pump, an outlet of the lubricating oil flashbottom pump is connected with the upper part of a lubricating oil stripping tower, the bottom of the lubricating oil stripping tower is connected with a lubricating oil stripping bottom pump, the outlet of the lubricating oil stripping bottom pump is coupled and connected with an extract secondary evaporation bottom heat exchanger, the extract secondary evaporation bottom heat exchanger is coupledand connected with the raw material heat exchanger through a pipeline, and the raw material heat exchanger is connected with a finished product tank. According to the regeneration refining process, colloid and asphaltene in the waste lubricating oil can be effectively removed, the process flow is continuously carried out, and the energy consumption is low.

The invention discloses a magnetic control type current collecting device capable of improving gas extraction concentration and an operation method thereof. The magnetic control type current collecting device comprises an extraction branch pipe (1), and one end of the extraction branch pipe extends into a coal seam; the other end of the extraction branch pipe is connected with an air inlet of a gas taking device (3) through a connection valve (2), an electromagnet I (7) is arranged at one end of a magnetic control tank, an electromagnet II (8) is arranged at the other end of the correspondingelectromagnet I, and an intelligent control valve I, an intelligent control valve II, the electromagnet I and the electromagnet II are all controlled by a control device (9); a baffle is arranged between the air inlet of the magnetic control tank and the electromagnet II; a piston with a permanent magnet (11) can be movably installed between the baffle and the electromagnet II, and the control device is used for driving the piston to move by controlling the magnetism of the electromagnet I and the electromagnet II and generating a magnetic effect with the permanent magnet. According to the magnetic control type current collecting device and the operation method thereof in the invention, the gas storage space inside the magnetic control tank is changed, so that near-zero negative pressure extraction of a gas extraction drilled hole and outer discharge of high-concentration gas of the magnetic control tank are realized, and the concentration and efficiency of gas extraction are improved.

The invention discloses a pulverizing system and process for reducing ash and improving quality of circulating materials in a medium-speed coal mill in a coal-fired power plant. Starting from the angle of characteristic particle sizes of the circulating materials and qualified pulverized coal in the pulverizing system, the grading particle size of a built-in pulverized coal classifier of the coalmill is optimized, and secondary grading operation of an external cyclone classifier is matched, so that the discharge of the circulating materials in the coal mill is realized; mineral components continuously accumulated in the circulating materials are removed through a pulsating airflow separation bed, so that the internal circulation ratio of the coal mill is reduced while the quality of the qualified pulverized coal is ensured to be improved. By means of the process, the multiple purposes of improving the quality of the qualified pulverized coal, improving the combustion efficiency of a boiler, reducing pollutant emission and the like can be achieved, the internal circulation ratio of a mill can be effectively reduced, equipment abrasion and energy consumption are reduced, and finally, all-in-one integration of grinding, grading and sorting of a coal grinding and pulverizing system of the power plant is achieved.

The invention discloses a pulverized coal discharge device for coalbed methane mining. A liquid injection component and a liquid discharge component are used to inject an anti-settling agent liquid downhole. It dissolves very well and ensures discharge at the same time, while the liquid injection component injects the anti-settling agent liquid into the pulverized coal anti-settling device in the form of pulse pressure, and the liquid discharge component discharges the anti-settling agent liquid discharged from the pulverized coal anti-settling device, and the slurry will flow from the coal The liquid outlet holes on the powder anti-sedimentation device are discharged to realize the dissolution and flushing of coal powder. At the same time, because the diameters of each group of liquid outlet holes are different, the flow rate and flow rate of the liquid flowing out of the liquid outlet holes are different, which can help the liquid Flow occurs in the downhole, which helps to realize the discharge of coal powder; the present invention adopts a plurality of injection discs and liquid injection capsules, which can be stretched and adjusted under the pulse pressure, and the liquid flow rate out of the liquid outlet hole is different, The pressure will be different due to the deformation, which will make the liquid wash away the pulverized coal and ensure the discharge effect.

The invention discloses a pulverization system and process for reducing ash and improving the quality of circulating materials in a medium-speed coal mill of a coal-fired power plant. The grading particle size of the built-in pulverized coal classifier and the secondary classification operation with the external cyclone classifier realize the discharge of the circulating material in the coal mill, and remove the continuously accumulated ore in the circulating material through the pulsating airflow separation bed. The material components can reduce the internal circulation rate of the mill while ensuring the quality of qualified pulverized coal is improved. Utilizing this process can not only achieve multiple purposes such as improving the quality of qualified pulverized coal, improving boiler combustion efficiency and reducing pollutant emissions, but also can effectively reduce the internal circulation rate of the mill, reduce equipment wear and energy consumption, and finally realize the coal pulverization of power plants The system "grinding-classification-sorting" is integrated.

The invention discloses a filtering device for processing high-quality and high-yield oil plants, and belongs to the technical field of oil plant processing. A filtering device for processing high-quality and high-yield oil plants comprises a base, a barrel is fixedly mounted on the upper surface of the base, a filtering assembly is arranged in the barrel and comprises a rotating shaft and a plurality of filter pressing parts, and each filter pressing part comprises a first filter plate, a second filter plate, a plurality of first pressing plates and a plurality of second pressing plates. The rotating shaft is vertically and rotatably sleeved in the cylinder body, a plurality of filter holes are vertically formed in the first filter plate and the second filter plate, the apertures of the plurality of filter holes are sequentially reduced from top to bottom, a feeding pipe is vertically and fixedly sleeved at the top end of the cylinder body, a driving part is arranged at the top end of the cylinder body, and a centrifugal part is arranged at the bottom end of the rotating shaft; the oil processing device effectively solves the problems that a filtering mechanism in an existing oil processing device is simple, oil in residues is lost, the oil yield is affected, and meanwhile waste is caused.

The invention provides a method for preparing natural gas by dry quenching co-production coal. In the method, reducing gas is taken as heat-carrying gas, refrigerant and a pyrolytic process thereof are adopted to recover a great quantity of sensible heat of high-temperature coke so as to couple the dry-method coke quenching process and the coal pyrolytic process of high-temperature metallurgical coke, thus cancelling a gas and air supply system, a combustion control system and a waste gas discharging system in the original pyrolytic process, avoiding pyrolytic combustion process, saving a great quantity of energy, and realizing smoke-free, NOX-free, SOX-free and CO2-free discharging. Meanwhile, gasification gas produced by pyrolytic gas and semi-coke gasification is used for producing andsynthetizing natural gas in a methanation manner so as to realize clean conversion of coal. In addition, the method cancels N2 preparation equipment and waste heat boiler systems in dry quenching, thus simplifying the operation and maintenance process and greatly lowering investment and operation cost.

The invention belongs to the technical field of flue gas desulfurization, and provides a liquid-vapor vortex phase-change integrated desulfurization and by-product recovery process. The liquid-vapor vortex phase-change integrated desulfurization and by-product recovery process comprises the steps of pre-desulfurization, desulfurization, impurity removal of a desulfurizer mixed solution, purification of a magnesium sulfate solution and recovery of magnesium sulfate monohydrate powder. The technical problem that by-products of existing flue gas desulfurization equipment are not effectively recycled is solved.

The invention relates to a process for recovering sericite from gold dressing tailings, belonging to the field of sericite recovery technology, comprising the following steps: (1) Magnetic separation: performing a stage of grinding on the gold dressing tailings, and magnetically separating the ground products , to obtain magnetic separation concentrate and magnetic separation tailings; (2) gravity separation roughing: the magnetic separation concentrate is carried out gravity separation roughing to obtain heavy gravity separation concentrate and gravity separation tailings; (3) gravity separation Selection and selection: the first re-selection and concentration will be carried out on the re-selected rough-selected concentrate to obtain the first re-selected concentrated ore and the first re-selected tailings, and then the first re-selected concentrate Carry out the second gravity selection and concentration to obtain the second gravity concentration concentrate and the second gravity concentration tailings, and carry out the second gravity concentration to the third gravity concentration to obtain the third (4) Gravity Sweeping; (5) Dehydration, abandoning the traditional flotation process, reducing the cost of recovery process and the cost of industrial polluting waste liquid produce and improve recycling efficiency.

The invention relates to the technical field of foundation construction, and particularly relates to a civil foundation engineering supporting assembly. Meanwhile, the invention further provides a supporting structure provided with the civil foundation engineering supporting assembly. The supporting structure comprises a concrete supporting column, wherein the concrete supporting column is used for being wedged in a foundation stratum; a central backflow channel is arranged at the center of the concrete supporting column; the upper part of the central backflow channel communicates with the outside; a plurality of settling water overflow holes communicate with the middle lower section of the central backflow channel; and the tail ends of the settling water overflow holes communicate with the stratum on the lower layer of the concrete supporting column. The civil foundation engineering supporting assembly adopts the concrete supporting column, so that the supporting effect on the foundation can be guaranteed, meanwhile, the situation that foundation water generated by the settling stratum moves outwards can be handled, the foundation water can be effectively discharged through all anti-corrosion pipelines, surface layer accumulated water under the working condition of foundation settling is effectively reduced, and the seepage water is effectively extracted in a centralized mode.

The invention discloses a sewage settling tank, comprising a tank body; a mixing barrel, which has a conical tubular structure and is provided with an opening at the lower end, is arranged at the central axis position of the tank body, and a vertical water outlet pipe is arranged at the central axis position of the mixing barrel; a mixing plate is arranged at the upper end of the vertical water outlet pipe, and is fixedly connected with a center shaft; the center shaft is fixedly connected with liquid outlet pipes which are distributed along the circumference and are communicated with the center shaft. By arranging the vertical water outlet pipe and the liquid outlet pipes, which are arranged opposite to each other, as well as the mixing barrel having the conical tubular structure, the mixing plate and the rotating center shaft, swirling flow is formed under the stirring of the mixing plate during head-on collision and mixing of a precipitant and sewage, so that the efficiency of flocculating precipitation is increased, the volumes of precipitate flocculation blocks are enlarged, and the generation of subsequent precipitate is facilitated; by arranging a vertical helical blade roller and a horizontal helical blade roller which are linked with each other, the sludge can be discharged outside, and a sludge discharge pipe is prevented from being blocked.

The invention discloses an adjusting device for a retainer ring of a vertical roller mill. A built-in adjusting mechanism is arranged in a shell in the mill; the device is characterized by comprising a retaining ring and a retaining ring support, the retaining ring support is welded on the outer wall of the retaining ring along the radial direction, a plurality of height adjusting base plates are arranged above the retaining ring support, the height adjusting base plates and the retaining ring support are fixedly mounted on a radial support through fasteners, and the outer end of the radial support is welded on the inner wall of a shell in the mill. According to the invention, the material retaining ring and the millstone can be separated in space, the material retaining ring originally rotating along with the millstone is suspended above the millstone and is statically supported by the bracket welded in the shell in the mill, and a fine powder discharging gap is formed between the material retaining ring and the millstone, so that fine powder can be discharged.

The invention discloses a radix sophorae flavescentis lipidosome composite with inflammation reduction and odor removal functions and a preparation method and application of the composite. The radix sophorae flavescentis lipidosome composite comprises a radix sophorae flavescentis lipidosome and a skin relieving element lipidosome, the radix sophorae flavescentis lipidosome comprises a folium artemisiae argyi extract, a radix sophorae flavescentis extract, a green tea extract, a langehead atractylodes rhizome extract, an astragalus root extract and a blumea balsamifera extract, and the skin relieving element lipidosome comprises a ginger extract. The main active component of the radix sophorae flavescentis transdermal absorption lipidosome has the treatment functions of clearing heat, removing toxicity, removing dampness, relieving swelling and pain, removing odor and relieving tickle, quickly permeates into the skin through the transdermal effect and is directly applied to the coriumlayer, the skin relieving element lipidosome helps to promote timely discharging of metabolite, deposition and skin injuries are avoided, deep nursing and timely discharging of metabolite are achieved, the original one-way application mechanism is changed, the nursing dual-way transdermal absorption is achieved, and the composite can be applied to preparation of medicine for treating symptoms suchas gynecological inflammation pruritus.

The invention discloses an explosion-proof switch cabinet and an explosion-proof method of the switch cabinet. The cabinet comprises a cabinet body and further comprises an energy absorption device fixed to the inner wall of the cabinet body. The energy absorption device comprises a frame, a partition plate and foamed aluminum, wherein the frame is fixed to the inner wall of the cabinet body, the outline of the foamed aluminum is matched with the outline of the frame, the foamed aluminum fills the frame, and the thickness of the foamed aluminum is greater than that of the frame. The partition plate is fixed to the surface of the side, facing the interior of the cabinet body, of the foamed aluminum. The invention aims to provide the explosion-proof switch cabinet and the explosion-proof method of the switch cabinet so as to solve the problems that the explosion-proof pressure of the switch cabinet is large and the explosion-proof effect needs to be improved in the prior art and achieve the purpose of improving the explosion-proof capability of the switch cabinet.

The invention discloses a magnetic control type current collecting device capable of improving gas extraction concentration and an operation method thereof. The magnetic control type current collecting device comprises an extraction branch pipe (1), and one end of the extraction branch pipe extends into a coal seam; the other end of the extraction branch pipe is connected with an air inlet of a gas taking device (3) through a connection valve (2), an electromagnet I (7) is arranged at one end of a magnetic control tank, an electromagnet II (8) is arranged at the other end of the correspondingelectromagnet I, and an intelligent control valve I, an intelligent control valve II, the electromagnet I and the electromagnet II are all controlled by a control device (9); a baffle is arranged between the air inlet of the magnetic control tank and the electromagnet II; a piston with a permanent magnet (11) can be movably installed between the baffle and the electromagnet II, and the control device is used for driving the piston to move by controlling the magnetism of the electromagnet I and the electromagnet II and generating a magnetic effect with the permanent magnet. According to the magnetic control type current collecting device and the operation method thereof in the invention, the gas storage space inside the magnetic control tank is changed, so that near-zero negative pressure extraction of a gas extraction drilled hole and outer discharge of high-concentration gas of the magnetic control tank are realized, and the concentration and efficiency of gas extraction are improved.

The invention provides a sewage flocculation and blow-down system and belongs to the technical field of sewage treatment. The sewage flocculation and blow-down system comprises a sewage and flocculating agent leading-in pipeline (1), a tank body (2), a bracket (3), a double-grade agitator (4), a water collection groove (5), an overflowing groove (6), a spiral umbrella-type cover body I (7), a spiral umbrella-type cover body II (8), a precipitator (9), a water quality monitoring device, a dirt collection barrel (12), a centrifuging drying machine (13) and an equipment adjusting central processor. The sewage flocculation and blow-down system can be used for realizing fixed-period automatic control blow-down so that the flocculation and blow-down system can be prevented from being frequently started and stopped and a liquid supernatant can be continuously overflowed and stored.

The invention discloses a method for preparing high-purity barium salt by using witherite-barytocalcite industrial waste residues. The method comprises a crushing and grinding procedure, an acid hydrolysis and leaching procedure, an impurity removal and purification procedure, an evaporation, concentration and crystallization procedure, a coarse washing procedure, a fine washing procedure and a drying, testing and packaging procedure. The barium salt with the high product purity and the low impurity content can be prepared with the method, and barium can be recovered efficiently. Meanwhile, high-temperature operation is not required by the whole-wet technology adopted in the method, reaction conditions are mild, the energy consumption is low, three-waste emission is low, thus, clean production and comprehensive utilization in the witherite-barytocalcite industrial waste residue deep-processing field can be further realized, and the economic benefit and the environmental benefit are significant.