1145results about How to "Improve ventilation" patented technology

The invention discloses an agricultural solid waste contaminated soil remediation device, and relates to the field of soil remediation, the agricultural solid waste contaminated soil remediation device comprises a base plate, a storage box and a first liquid outlet pipe, the bottom of the base plate is fixedly connected with four electric wheels, the upper portion of the base plate is fixedly connected with a handheld handrail, the storage box is fixedly connected to the upper portion of the base plate, and the first liquid outlet pipe is fixedly connected to the base plate; the upper end of the first liquid outlet pipe penetrates through the base plate to communicate with the storage box, the bottom of the base plate is fixedly connected with a first extension plate, and the first extension plate is fixedly connected with a first motor. According to the device, soil on the filter plate is vibrated, so that the soil leaks out of filter holes in the filter plate, and building concrete stones larger than the filter holes cannot fall off; and the concrete stones embedded in the soil can be effectively removed, and the blocking of the stones can be reduced during the subsequent injection of the repairing liquid, so that the repairing liquid can be fully permeated into the soil.

The invention discloses a water-retaining controlled-release fertilizer and a preparation method thereof, and relates to the technical field of controlled-release fertilizers. According to the invention, the attapulgite is modified by a phosphoric acid solution, so that the surface of the attapulgite has acidic groups, and the groups can be adsorbed with positive ions in the fertilizer, so that nutrients are adsorbed and fixed on the surface of the attapulgite, and the speed of releasing the fertilizer nutrients into a soil solution is delayed; meanwhile, the modified attapulgite and some nutritional ingredients in the fertilizer can form indissolvable compounds, so that the nutrients are slowly released along with gradual dissolution of the compounds, and the fertilizer efficiency of the fertilizer is prolonged; when the modified attapulgite encounters water, the entering speed of water can be effectively slowed down, dissolution of nutrients in fertilizer particles is controlled, and then the slow and controlled release effect is achieved; and the modified attapulgite can regulate the pH value of the soil, so that the soil environment is more suitable for plant growth and slow release of fertilizer nutrients.

The invention provides a southern red soil dry land deacidification soil conditioner and a preparation method thereof, and belongs to the technical field of soil conditioners. The preparation method comprises the following steps: embedding bacillus subtilis, bacillus licheniformis and bacillus amyloliquefaciens to prepare bacterial microspheres, adding the bacterial microspheres into gel formed by carboxymethyl chitosan and silk fibroin peptide to prepare sustained-release bacterial microsphere gel, uniformly mixing the sustained-release bacterial microsphere gel with porous silicon dioxide loaded with basalt and charcoal, and drying to prepare the acid-reducing soil conditioner for the southern red soil dry land. The acid-reducing soil conditioner for the southern red soil dry land not only improves the pH value of the soil, but also can loosen the soil and improve the air permeability of the soil to a certain extent, and promotes the absorption of crops to moisture and nutrient elements by improving the physical and chemical properties of the soil, so that the normal growth of the crops is ensured, and the acid-reducing soil conditioner has a wide application prospect.

The invention discloses a method for improving an acidic clayey soil plough layer, which comprises the following steps of: 1, after autumn rice is harvested, draining water in a rice field, and carrying out conventional tillage, soil turning and leveling on the rice field for later use; 2, green manure planting is conducted in the suitable green manure sowing period from October to November; 3, in the full-bloom stage, green manure is smashed, turned, pressed and returned to the field, lime and organic fertilizer are spread, the rice field is deeply ploughed at a time, and the green manure, the lime and the organic fertilizer are deeply buried in soil of the rice field; 4, the rice field is irrigated and soaked in water for a period of time, and then rice is planted. The method can inhibit and stabilize acid, improve the buffer performance of the soil, effectively expand a deep ploughing layer, improve the physical structure of the soil and improve the utilization rate of rainfall resources by the soil, so that the purposes of minimal ploughing, high yield and farmland protection are achieved.

The invention relates to an aerosol moisture absorption and activation process observation system and an observation method thereof. The aerosol moisture absorption and activation process observation method comprises the following steps: collecting sample gases under different humidity conditions, and carrying out particle size screening on the sample gases to respectively obtain aerosols with different particle sizes; measuring scattering coefficients of the aerosols with different particle sizes under different humidity conditions; calculating scattering moisture absorption growth factors of the aerosols with different particle sizes according to the scattering coefficients, and performing inversion calculation on the scattering moisture absorption growth factors so as to obtain moisture absorption, water content, volume concentration and surface area concentration of the aerosols; according to the scattering coefficients corresponding to the aerosols with different particle sizes in the environment state, the dry state critical particle sizes of the aerosols with the dry state increased to 1 micrometer and 2.5 micrometers through water vapor condensation and the scattering moisture absorption growth factor of the aerosols with the environment state ranging from 1 micrometer to 2.5 micrometers are calculated in an inversion mode, and the effective supersaturation ratio of the cloud mist is obtained through inversion. And the aerosol moisture absorption and activation process observation system is arranged according to the aerosol moisture absorption and activation process observation method.

The invention discloses a ventilation and air exchange device for a green building. The ventilation and air exchange device comprises a ventilation and air exchange box, a mounting plate, a ventilation and air exchange opening, a rotary air disc and fan blades. Mounting plates are fixed to the two ends of the two sides of the ventilation box, fixing pins penetrate through the interiors of the mounting plates, one ends of the fixing pins extend into the green building wall, and ventilation ports are formed in the two ends of the outer side of the ventilation box. According to the ventilation device for the green building, a fan motor is used for driving a linkage shaft to rotate, and a transmission assembly is matched to enable a fan shaft to rotate synchronously, so that two rotating wind discs and a plurality of fan blades are driven to rotate, outdoor fresh air is extracted and fed into the green building, and the ventilation effect is improved. According to the indoor air purification device, vitiated air, harmful gas and microorganisms in a building can be effectively diluted and discharged, so that the indoor air quality is improved, a healthier and more comfortable living environment is provided for people, indoor oxygen can be effectively supplemented, and the freshness and vitality of indoor air are kept.

The invention discloses an energy-saving irrigation method for a water conservancy project, and belongs to the technical field of agricultural irrigation. The adjusting mechanism is installed on the water conveying pipe and comprises a movable sleeve part and a third sleeve, the movable sleeve part is rotationally installed on the water conveying pipe, an adjusting part is installed in the movable sleeve part, the third sleeve is provided with an irrigation opening, and the third sleeve is installed on the movable sleeve part in a sliding mode through the adjusting part; the oxygen supply mechanism is arranged in the movable sleeve and comprises a fixing ring, a connecting rod, an air bag and an output pipe, the connecting rod can slide in the circumferential direction of the fixing ring, the connecting rod is sleeved with the air bag, and the output pipe is fixedly connected with the air bag. Water flow enters the movable sleeve and the third sleeve through the space between the sealing block and the sealing ring, the third sleeve moves upwards on the movable sleeve under the jacking action of the movable rod to expose the irrigation opening, and the purpose of irrigation is achieved.

The invention relates to a soil conditioner for saline-alkali land treatment and a preparation method, and belongs to the technical field of soil conditioners. The soil conditioner for saline-alkali land treatment is prepared from a fermented fertilizer, biomass charcoal II, corn straw powder, attapulgite powder, humic acid and a compound microbial agent. The soil conditioner disclosed by the invention can be used for reducing the pH value of soil, reducing salinity, promoting the recovery of organic matters and improving the fertility of the soil, and is beneficial to improving the yield of crops.

The invention discloses a power distribution cabinet with a temperature adjusting function, and relates to the field of power distribution cabinet heat dissipation, the power distribution cabinet with the temperature adjusting function comprises an equipment frame, a square frame fixedly penetrates through the top of the equipment frame, and the power distribution cabinet further comprises a moving device; wherein the moving device comprises a fixed frame, a ventilation plate, a fan, a rotating rod, a circular plate, a rotating plate, a sleeve, a supporting rod, a sliding block, a U-shaped plate, a fixed block, a connecting plate, a moving plate, a connecting block, a bearing block, a square block and a filtering plate, the fixed frame is slidably installed in the square frame, and the ventilation plate is fixedly installed in the fixed frame. According to the power distribution cabinet with the temperature adjusting function, the ventilation effect is achieved by opening the ventilation opening, the situation that the interior of equipment is overheated, and consequently the equipment cannot operate normally is prevented, the humidity in the cabinet can be reduced through good ventilation, meanwhile, the area of the ventilation opening is increased along with increase of the rotating speed of the internal fan, and self-adaptive adjustment can be conducted according to changes of the temperature in the cabinet.

The invention discloses a soil structure improver containing a compound microbial agent and a preparation method of the soil structure improver. The soil structure improver containing the compound microbial agent is prepared from the following raw materials in percentage by mass: humic acid, the compound microbial agent, vermiculite powder, a seaweed extract, diatomite, polydextrose, pectin, monopotassium phosphate, an organic zinc chelate, a medium trace element supplement and bentonite, wherein the humic acid, the compound microbial agent, the vermiculite powder, the seaweed extract, the diatomite, the polydextrose, the pectin, the monopotassium phosphate, the organic zinc chelate, the medium trace element supplement and the bentonite are matched. According to the soil structure improver disclosed by the invention, through the synergistic effect of the compound microbial agent, the proportion of a soil aggregate structure is effectively increased, the stability and the anti-scouring capability of soil are enhanced, the air permeability and the water-retaining property of the soil are improved, an ideal environment is created for the growth of crop roots, and the microbial agent can be colonized in the soil, so that the soil structure is improved. A good microbial community structure is formed, the biological diversity of the soil is enhanced, the self-repairing capability of the soil is improved, and a healthy soil ecological system can be constructed.

The invention belongs to the technical field of antibacterial super-hydrophobic functionalization of selective laser sintering parts, and particularly relates to a preparation method of a breathable, antibacterial and self-cleaning TPU sports knee pad. According to the invention, SiO2 and TiO2 are grown on GO to obtain super-hydrophobic modified GO, and the super-hydrophobic modified GO-WPU emulsion is prepared through emulsion polymerization. Then, the TPU sports knee pad which is formed through the SLS technology and is of a gradient hollowed-out lattice structure with the hollowed-out degree gradually increasing from outside to inside is coated with an antibacterial and self-cleaning coating. The finally prepared TPU sports kneecap has breathable, antibacterial and self-cleaning functions, and is light to wear and high in buffer protection performance.

The present invention relates to the technical field of ecological concrete slurry, and specifically to an ecological seed-carrying slurry for the slope of a mine dump, a preparation method and its application. Aiming at the special environmental characteristics of the Inner Mongolia mining area, the present invention prepares a new type of artificial aggregate containing growth domains and seeds, which is composed of a three-layer structure, each layer having a specific function, so as to achieve the purpose of promoting the germination of multi-source species, plant growth, providing nutrition and improving the soil environment. The slurry can not only effectively utilize solid waste and reduce costs, but also adopts in-situ point-type layered hole sowing to shorten the vegetation restoration cycle in the ecological restoration of the slope, greatly improve the survival rate of tree and shrub seed sources, reduce the number of watering times, save restoration costs, and reduce the workload of management. While effectively promoting vegetation restoration, it strengthens the stability of the slope, prevents soil and water loss, slows down runoff and consolidates the soil, providing an efficient and sustainable solution for the ecological restoration of green mines in Inner Mongolia.

The present invention discloses an intelligent mushroom production cabin, which belongs to the technical field of mushroom cabins. The present invention comprises a storage body, a heat preservation door is installed at the tail of the storage body, and a bottom frame is fixedly connected to the bottom of the storage body, a hot and cold pipe is installed inside the storage body, and the hot and cold pipe is connected to a fan, and a humidification pipe is installed inside the storage body; and further comprises: a temperature sensor and a humidity sensor are installed inside the storage body, and the temperature sensor and the humidity sensor are electrically connected to the fan and the ultrasonic atomizer respectively, a connection groove is opened at the lower end of the interior of the storage body, and a movable control component is installed in the connection groove, and the movable control component is used to control the movement of the culture rack. The intelligent mushroom production cabin can facilitate the uniform humidification of the mushrooms in the upper and lower layers when in use, so as to avoid the upper mushrooms from blocking the lower mushrooms, and at the same time, the spraying range of the nozzle can be increased to avoid the occurrence of spraying missed areas.

The invention relates to the technical field of tea watering, and discloses a tea watering device which comprises a processing box, the back of the processing box is fixedly connected with a water tank, the top of the water tank is communicated with a plurality of spray pipes, the spray pipes extend into the processing box, and inverted-T-shaped sliding grooves are formed in the left side and the right side of the processing box respectively. Reciprocating swinging of a rectangular shaft can drive a spraying pipe to swing, reciprocating swinging of a spraying head can expand the spraying coverage range, water is more evenly distributed on the surfaces of tea leaves, left-right movement of a moving sleeve can drive the spraying pipe to move left and right, and therefore the spraying range of the tea leaves is widened, and the tea leaves can make full contact with the water; after the tea leaves are in full contact with water, hydrolase can be activated by full contact with the water, macromolecular substances such as protein and polysaccharide in the tea leaves can be decomposed into micromolecular substances such as amino acid and monosaccharide by the hydrolase, and the taste and aroma components of the tea leaves are increased.

The invention relates to the technical field of transformers, and discloses a wind power energy storage transformer with a high heat dissipation function, the wind power energy storage transformer comprises a transformer body, the periphery of the transformer body is equidistantly provided with a plurality of heat dissipation fin bodies; through the arrangement of the cleaning scraping plate, the driving assembly and the locking assembly, the driving assembly drives the cleaning scraping plate to rotate by 90 degrees anticlockwise and then ascend and descend to clean fallen leaves in gaps of the adjacent cooling fin bodies, the locking assembly is used for locking the cleaning scraping plate when the cleaning scraping plate rotates by 90 degrees anticlockwise, the fallen leaves are cleaned in time, the cooling effect of the cooling fin bodies can be improved, and the service life of the cooling fin bodies is prolonged. Meanwhile, fallen leaves can be prevented from rotting on the surface of the heat dissipation fin body, the service life of the heat dissipation fin body is prolonged, the U-shaped scraping plate and the linear scraping plate are arranged in a vertical state in the initial state, the fallen leaves can be prevented from falling into the surfaces of the U-shaped scraping plate and the linear scraping plate, and heat dissipation of the heat dissipation fin body is improved.

The invention relates to the technical field of unmanned aerial vehicle seeding, and discloses an unmanned aerial vehicle with seeding units and capable of uniformly seeding in rows, the unmanned aerial vehicle comprises an unmanned aerial vehicle main body and a plurality of seeding units, the unmanned aerial vehicle main body is provided with an aircraft cross bar, and each seeding unit is detachably mounted on the aircraft cross bar; wherein each seeding unit comprises a seeding body, the top of the seeding body is provided with a seed bin and a feed port, the lower part of the seeding body is provided with a discharge port, the discharge port is provided with a material detection sensor, and the material sensor is used for detecting the outflow condition of seeds; a roller mechanism is arranged in the seeding body, a discharging channel is arranged below the roller mechanism, an opening is formed between the top of the discharging channel and the seed discharging bin, the discharging port is located in the bottom of the discharging channel, and a seed containing groove mechanism is arranged on the roller mechanism; the idler wheel mechanism brings seeds into the discharging channel from the opening through the seed containing groove mechanism on the idler wheel mechanism in the rotating process, and then the seeds are discharged through the discharging opening.

The invention relates to the technical field of servers, and particularly discloses a direct connection hard disk system, a hard disk daughter board and a server. The hard disk daughter board and a backboard board card which are detachably connected are designed, and the hard disk daughter board is detachably connected with the backboard board card through a first hard disk state signal connector; an uplink data interface of a hard disk connector on the hard disk daughter board is directly connected with the server mainboard through a high-speed signal line, a downlink data interface of the hard disk connector is connected with a hard disk, and a hard disk state signal and a power signal of the hard disk connector are connected with a backboard controller of the backboard board card through a first hard disk state signal connector. Compared with a traditional direct-connection hard disk backboard, the universal backboard board card can be used in a cross-generation mode, only corresponding hard disk daughter boards need to be additionally arranged according to the number and the type of hard disks, a high-speed signal link is shortened, the impedance design difficulty is lowered, heat dissipation is facilitated, and noise and power consumption of the whole machine are lowered.

The invention discloses a sound absorption assembly, a sound production device and electronic equipment, and relates to the acoustics field, the sound absorption assembly comprises a shell and sound absorption particles filled in the shell, the shell comprises a main body part and a sealing cover part, the main body part defines a containing space, the sound absorption particles are filled in the containing space, and the sealing cover part covers the containing space. The sound-absorbing particles comprise a plurality of sound-absorbing raw powder and an adhesive for integrally adhering the plurality of sound-absorbing raw powder, the sealing cover part covers the main body part to seal the accommodating space, the main body part forms a porous structure formed by stacking cellosilk, the thickness of the main body part is 0.06-0.5 mm, the air permeability of the main body part is 500-5000mm / s, and the surface density of the main body part is 20-100g / m < 2 >. The main body part of the sound-absorbing assembly has proper thickness, air permeability and surface density, the sound-absorbing particles are effectively packaged, the sound-absorbing assembly can provide a certain sound-absorbing effect, and the overall sound-absorbing effect of the sound-absorbing assembly is improved.

The invention provides a water supply control method and device, clothes treatment equipment and a storage medium, and the method comprises the steps that first water supply treatment and second water supply treatment are executed based on a clothes treatment instruction, and the first water supply treatment is located before and / or after the second water supply treatment, the first water supply treatment comprises the step of supplying water to a clothes containing device of the clothes treatment equipment through a first water supply pipeline, the first water supply pipeline communicates with the clothes containing device through an air outlet channel of the clothes treatment equipment, and a filter screen used for filtering airflow in the drying treatment process is arranged in the air outlet channel; the second water supply treatment comprises supplying water to the clothes accommodating device through a second water supply pipeline, and the second water supply pipeline is communicated with the clothes accommodating device through a clothes treating agent box of the clothes treating equipment. According to the technical scheme, the filter screen is cleaned before and / or after water is supplied for clothes treatment, the ventilation area of the filter screen is increased, and the drying effect in the clothes treatment process can be effectively improved.

The invention discloses a bone joint wound dressing fixator, relates to the technical field of medical instruments, and particularly aims to solve the problems that in the prior art, when an existing joint dressing is used, due to the fact that the joint of a patient does rehabilitation exercise, the dressing rubs against the wound of the patient, the wound of the patient is hurt, and the patient feels uncomfortable. In order to solve the problem that the dressing cannot be tightly attached to the wound all the time on the basis that rehabilitation exercise is not affected, the bone joint wound dressing fixator comprises an elastic fixing band, a knee protection sleeve, a synchronous moving mechanism, an air conveying mechanism, an air ring and a self-adaption mechanism. The dressing and the wound of the patient are always kept in an attached state in the movement process of the patient, friction between the dressing and the wound is greatly relieved, and cooling, ventilating and drying operation is conducted on the wound at the same time.

The invention relates to the technical field of film permeability testing equipment, and provides a device and method for real-time determination of permeability of a compost covering film.The device for real-time determination of permeability of the compost covering film.The device comprises a first detection box and a second detection box, the first detection box is provided with a first inner cavity and a first opening, and the second detection box is provided with a second inner cavity; the first detection box is provided with a first inner cavity and a second opening, a first sensor assembly is arranged in the first inner cavity, the first detection box is provided with an air inlet communicated with the first inner cavity, the second detection box is provided with a second inner cavity and a second opening, a second sensor assembly is arranged in the second inner cavity, and the second detection box is provided with an air outlet communicated with the second inner cavity. The first opening and the second opening are oppositely arranged, and the first detection box and the second detection box are arranged in a fitting manner, so that the to-be-detected film can be clamped between the first detection box and the second detection box. The device for measuring the permeability of the compost covering film in real time has the advantages of being convenient to carry and operate, intelligent in induction, high in use flexibility and the like.

The utility model discloses a hippeastrum hippeastrum constant-temperature culture device, which relates to the technical field of plant culture and comprises a box body, a protective door and a PLC (programmable logic controller), a protective door and a PLC are arranged on the front face of the box body, an illumination system is arranged at the top end in the box body, a ventilation system is arranged on the outer side of the side wall of the box body, the box body communicates with the outside through the ventilation system, a temperature adjusting system is arranged on the inner side of the side wall of the box body, and an irrigation system is arranged at the bottom end in the box body. The bottom of the planting groove is communicated with an irrigation system through a filter screen. The illumination system is arranged, so that the color and the illumination condition can be adjusted; a ventilation system is arranged, the ventilation effect is good, and carbon dioxide can be provided; the temperature adjusting system is arranged, the refrigerating and heating functions are achieved, and the adjusting capacity is high; the irrigation system is arranged, water and fertilizer can be provided, and water accumulation is avoided; the double-layer protective door is arranged, so that the growth condition of hippeastrum hippeastrum can be observed on the premise of not influencing the internal environment of the box body.

The utility model relates to the technical field of steel structure lifting tables, and provides a steel structure lifting table which comprises a base, four supporting plates and a lifting plate, the top of the base is fixedly connected with two sliding plates through screws, a sliding rod is assembled on the two sliding plates in a sliding mode, and the lifting plate is arranged on the base through the supporting plates, triangular supporting rods and other structures. The disc rotates to drive the connecting rod to do reciprocating motion, so that the telescopic plate is driven to do telescopic motion, the supporting plate can stretch out of the base to be supported on the ground, then through the stability principle of the triangular supporting rod, the supporting plate is more stable when being supported on the ground, and the supporting area of the bottom of the lifting table can be remarkably enlarged through the large-area supporting plate; according to the technical scheme, the contact face between the lifting platform and the ground is increased, the lifting platform can be effectively prevented from shaking or inclining in the lifting process, the stability of the lifter is better, and the problems that in the prior art, stability is poor and overhauling is difficult are solved.

The invention relates to a fertilizer synergistic composition, a special corn fertilizer and a preparation method thereof, and belongs to the technical field of fertilizers. The fertilizer synergistic composition comprises the following components in percentage by weight: 0.6%-5.0% of polyaspartic acid, 1.2%-4.0% of polyacrylamide, 0.3%-2.0% of a nitrification inhibitor and the balance of zeolite powder. The invention also provides a special corn fertilizer containing the fertilizer synergistic composition. The polyacrylamide in the composition provided by the invention can improve the soil structure, increase the porosity and air permeability of the soil, improve the water retention capacity of the soil and reduce the permeability of the soil, so that the fertility of the soil and the yield of crops are improved. According to the fertilizer synergist, the utilization degree of a fertilizer is increased, the release speed of the fertilizer is controlled, and the fertilizer can act for a long time.

The invention relates to the technical field of visual robots, and discloses a visual navigation mobile robot under a GPS signal denial condition, the visual navigation mobile robot comprises a robot body, the top of the robot body is fixedly connected with a control box body; by integrating a visual navigation system and an intelligent path planning algorithm, the navigation problem of the mobile robot under a GPS signal denial condition is solved, so that the robot has higher autonomy and adaptability, and accurate positioning and navigation can be realized in a complex environment; meanwhile, the cleaning brush is used for cleaning the wheel body, sundries and the like which are attached to the surface of the wheel body and affect advancing of the robot body are reduced, the transmission fan is used for generating wind power, the ventilation effect in the robot body is improved, and dust on the surfaces of the heat dissipation holes can be cleaned through the dust removal brush which continuously moves; the situation that dust is attached to the surfaces of the heat dissipation holes to affect air circulation in the robot body and consequently temperature rise is caused is reduced, and the stability of a circuit in the robot body is improved.

The invention discloses an ecological restoration method for salinized land in a semi-arid region based on a natural solution. The ecological restoration method comprises the following steps: S1, defining a plurality of ecological restoration regions; s2, planting plants; in each ecological restoration area, high-layer plants are planted on a circle of the edge of the ecological restoration area, and a circle of middle-layer plants and a circle of low-layer plants are sequentially planted into the ecological restoration area; s3, arranging an ecological restoration area; according to the invention, an ecological restoration area with multi-layer plant distribution can be formed, the restoration and improvement of biodiversity are facilitated, and through the arrangement of the first groove, the sand barrier and the spacing between the first groove and the sand barrier, the purpose that seeds of plants in each layer stay in or near the first groove along with wind to achieve sowing and growth can be achieved in the subsequent year; multiple layers of plants along the first grooves are formed, the ecological restoration effect is enhanced, subsequent sowing through wind power is facilitated, and manual close planting is not needed any more.

The invention discloses an environment-friendly construction dust suppression device and method, and relates to the technical field of environment-friendly construction. According to the environment-friendly construction dust suppression device, through the design of a composite mechanism, a suction fan is inserted into the outer side of an external connection disc, so that disassembly and assembly are facilitated, follow-up replacement and maintenance are facilitated, the suction fan is started, wind enters from the side, close to a flowing pipe, of the inner wall of a composite shell and flows towards the side of the suction fan, and therefore dust and smell on a site are absorbed; the situation that the site environment is too severe, personnel safety is affected, potential safety hazards are reduced, the flowing pipe is of a structure with the two wide ends and the middle narrow and small, according to the Bernoulli principle, the diameter of the pipeline is reduced, the flowing speed of gas is increased, and therefore the operation effect is improved, and the cleaning efficiency of the construction site is improved; dust and air flow enter the composite shell, harmful gas of the air flow is filtered and purified through the filtering mechanism, and therefore normal operation of equipment is kept.

The invention provides a separate mining subsequent filling mining method and structure suitable for a steeply inclined multi-layer thick and large ore body, and relates to the technical field of filling mining, the method comprises the following steps: S1, the ore body is divided into a middle layer ore body, a hanging wall ore body and a footwall ore body; s2, the middle layer ore body is stoped; s3, the panel ore body is stoped; and S4, the panel ore pillars and the isolation ore pillars are stoped. The step S3 comprises the sub-steps that S31, the hanging panel ore body is stoped; and S32, the footwall ore body is stoped. According to the mining method, multiple mining methods can be combined for use, separate collection of different ore types is achieved, dilution loss caused by ore mixing in a stope is avoided, the recycling efficiency of resources is improved, and therefore the mining efficiency of the mining method can be improved when steeply-inclined multi-layer thick and large ore bodies are mined. The ore recovery rate, the production efficiency and the operation safety can be greatly improved, the ventilation effect is improved, and accurate mining projects are reduced.

The invention relates to the field of plant growth regulators, in particular to an ultramicro-granulated energy-gathered humic acid composite preparation which is prepared from the following raw materials in parts by weight: 50-80 parts of ultramicro-granulated energy-gathered humic acid, 10-30 parts of nanoscale metal oxide, 5-20 parts of a microbial agent, 1-10 parts of a plant growth regulator and 5-15 parts of a slow release agent. According to the invention, ultrafine particle shaped humic acid, nano-scale metal oxide, a microbial agent, a plant growth regulator and a slow-release agent are organically combined. The effect of the soil conditioner is far better than that of a single component or a traditional soil conditioner.

The invention provides a special fertilizer for highland barley in Tibet high-altitude areas, which specifically comprises a matrix, a base fertilizer, an organic fertilizer, a trace element fertilizer, a modifier and a nutritional agent in a mass ratio of 100: 50: 100: 1: 15: 3, the substrate comprises loam, river sand and bentonite; the base fertilizer comprises nitrogenous fertilizer, phosphatic fertilizer and potash fertilizer; the organic fertilizer comprises bran, decomposed straw, decomposed excrement, plant ash and aquatic animal powder; the modifier comprises wormcast, silkworm excrement, perlite and vermiculite; the nutritional agent comprises compound vitamins, glucose, honey and compound amino acids; the raw materials used in the method are green, safe and pollution-free, the soil structure is improved while nutrient substances needed by highland barley growth are provided, the bran, the straw, the decomposed excrement and other agricultural wastes are used, cost is saved, efficiency is improved, and the utilization rate of resources is increased.