105 results about "Dry sand" patented technology

The invention discloses a vacuum negative pressure vibration assisted precision casting forming method. The method comprises the steps of model preparation, sand box and dry sand pretreatment, layered vibration sand filling, film covering vacuumizing, molten metal smelting and purification treatment, negative pressure vibration pouring, pressure maintaining solidification, segmented temperature control and pressure relief box opening and multi-stage cleaning aftertreatment. The core of the method is that mechanical vibration and a vacuum negative pressure technology are deeply coordinated and penetrate through the whole process of modeling, pouring and solidification, and meanwhile, a series of fine control means such as dry sand accurate pretreatment, molten metal rotary blowing degassing and instantaneous inoculation, stepped negative pressure control, temperature-related segmented pressure relief and two-stage shot blasting cleaning are matched; through dynamic cooperation of vibration and negative pressure, the sand mold compaction uniformity, the molten metal mold filling capacity and the solidification feeding effect are remarkably improved, the casting defects of air holes, shrinkage porosity, insufficient pouring and the like are effectively reduced, and the internal density, the size precision and the surface quality of a casting can be remarkably improved.

This invention discloses a continuous, high-efficiency, automatic dry-mixed mortar preparation equipment, relating to the field of mortar preparation technology. It includes a sand drying device and a feeding hopper. A sand particle screen is installed on one side of the sand drying device, and a screw conveyor connects the sand drying device and the sand particle screen. The dried sand enters the sand particle screen via the screw conveyor. Under the action of a first and second uniform material assembly, the mortar on the first conveyor belt consists of coarse sand, fine sand, cement, and filler laid out in sequence. Because the fine sand can fill the gaps in the coarse sand, reducing the relative movement space of the coarse sand and increasing internal friction, the cement and filler can be positioned on top of the coarse and fine sand. The dry-mixed mortar is stacked in a layered structure in a packaging bag using an anti-segregation telescopic tube, reducing stratification during bagging and transportation after mortar preparation, and reducing the mixing time between the mortar and water in the later stages.

The utility model discloses a dry-method gravel processing and desilting system, which relates to the field of gravel processing and desilting, and comprises a coarse crushing workshop and a semi-finished product bin, and the coarse crushing workshop is provided with a material inlet; the heavy plate feeder is arranged at one end, close to the material inlet, in the coarse crushing workshop, and heavy plate feeder striker plates are arranged on the two sides of the heavy plate feeder; and the multiple mud brushing units are arranged on the two baffle plates of the heavy plate feeder correspondingly and used for removing mud from the passing sand and stones. According to the scheme, the desilting effect on gravel is good, water washing is not needed in the desilting process, meanwhile, the gravel can be rapidly air-dried, soil on the surface of the gravel is cleaned through a material brush, soil on the gravel conveyed to a roller screen is further screened out through the roller screen, and the desilting effect is enhanced; and a plurality of roller screen compressed air nozzles are arranged, so that the surface of the gravel can be further subjected to mud removal in the mud screening process.

The invention relates to the technical field of full mold casting, and provides an evanescent mode dry sand negative pressure molding process, EPS particles are doped with nanometer silane modified silicon dioxide with the mass percentage being 0.5% of that of the EPS particles, so that the strength of a foam model is improved by 20%, the heat deformation temperature is increased to 80 DEG C, and deformation in the molding and pouring process is reduced. The coating of the bottom layer of the model adopts 20% of bauxite and 5% of carbon fibers to be matched with a water-based binder, so that the air permeability is enhanced, and the coating of the surface layer of the model adopts 60% of emery and 10% of silica powder to be matched with a water-based binder, so that the fire resistance is improved. Pre-jolt ramming and main jolt ramming are carried out after sand filling, so that the compactness uniformity of dry sand is improved to 95% or above; sealing is carried out, main vacuumizing and auxiliary vacuumizing are carried out, the vacuum degree sealing performance during pouring is guaranteed, then pouring forming is carried out, and the vacuum degree is monitored in the pouring process, so that the stability of the vacuum degree in the pouring process is guaranteed; and finally cooling and releasing negative pressure to obtain the casting.

The invention relates to the technical field of evanescent mode casting, and discloses an evanescent mode casting process which comprises the following steps: adopting a closed pouring system; setting a pouring temperature; a bottom pouring type pouring system is adopted; a furan resin self-hardening sand core is embedded in the part difficult to fill sand, after a process hole with the diameter smaller than or equal to 50 mm is formed, filling is conducted through an EPS block, sealing is conducted through a high-temperature-resistant adhesive tape, and compaction is assisted through vibration compaction equipment during sand filling; through multi-process collaborative optimization, a full-process controllable lost foam casting system is constructed, the casting density is improved compared with a traditional process, and the tensile strength is improved; the rejection rate is greatly reduced, and the production cycle is obviously shortened; and the dry sand recycling rate is high, and the comprehensive cost is reduced. According to the technical scheme, the problems of discontinuous mold filling, gas retention, dry sand collapse and the like in lost foam casting are solved, and a standardized solution is provided for industrial production of high-end castings.

The utility model relates to an evanescent mode capable of flexibly replacing a product production date. The evanescent mode comprises a sand box, the evanescent mode body is made of a foam material and is arranged in the sand box; wherein a replaceable sheet body is arranged on the outer surface of the evanescent mode body, and a raised first digital mark is arranged on the outer surface of the sheet body; the production gas which is originally printed with years, months and days on the evanescent mode is printed on the sheet body, the sheet body is matched with the evanescent mode body, and the first digital mark protrudes out of the sheet body, so that a cavity for molten metal pouring is formed in the dry sand, and the foamed evanescent mode body and the sheet body are melted together during pouring molding, so that the molten metal is formed. The date of the day is displayed on a casting body after casting molding; and the sheet body can be stamped according to the date of the day to form the first digital mark, so that flexible replacement of the production date on the evanescent mode is realized, and waste of the evanescent mode body is avoided.

The embodiment of the application provides a machine tool base, which comprises a base shell and resin concrete filled into the base shell, the resin concrete comprises raw materials with the following mass percentages: aggregate 70%-85%, filler 5%-15%, and cementing material 5%-20%, wherein the aggregate comprises dry sand and stone, the dry sand accounts for 10%-20% of the total mass of the aggregate, the stone accounts for 80%-90% of the total mass of the aggregate, the stone comprises at least three kinds of stone with different particle sizes, the dry sand comprises: dry sand with a particle size of 0.074-0.106 mm, accounting for 72%-78% of the total mass of the dry sand; dry sand with a particle size of 0.053-0.074 mm, accounting for 20%-25% of the total mass of the dry sand; and dry sand with a particle size less than 0.053 mm, accounting for 1%-3% of the total mass of the dry sand. The machine tool base manufactured by the scheme of the application can greatly improve the compressive strength of the machine tool base.

The invention provides a soil improvement material for ecologically restoring difficult site conditions and a preparation method and application thereof.The soil improvement material capable of being used for plant planting comprises a slow-release capsule coating body, the slow-release capsule coating body is composed of three layers of capsules which are coaxially arranged at intervals, an inner cavity of the inner layer capsule is filled with a fiber drying agent, and the inner layer capsule is filled with a fiber drying agent; a composite material capable of exploding after absorbing soil moisture is filled between the inner-layer capsule and the middle-layer capsule, and dry sand grains are filled between the middle-layer capsule and the outer-layer capsule; the preparation method comprises the following steps: rolling a fiber drying sheet into a solid cylinder structure with a set diameter, tightening the solid cylinder structure with plant fibers to obtain a roll-type plant fiber drying agent, then loading the roll-type plant fiber drying agent into an inner-layer capsule, sealing the inner-layer capsule, and then coating the inner-layer capsule with a composite material and dry sand grains. The soil conditioner can be used for soil improvement in an area with a deep soil layer, and the air permeability and the loose state of the soil can be kept for a long time.

The utility model discloses a sand drying machine which comprises a drying furnace body, a smoke discharging cylinder is arranged above the drying furnace body, a furnace door is arranged on the front side of the drying furnace body, a firewood opening is formed in the furnace door, an ash receiving box is arranged in the lower portion of the drying furnace body, and a stirring assembly used for flattening combustion ash is arranged in the ash receiving box. A roller is installed in the drying furnace body, a transmission shaft is fixed to one end of the roller and penetrates through a furnace body of the drying furnace body to be connected with a speed reducer unit, the speed reducer unit is driven by a driving motor through a belt, and a material guide opening is formed in the other end of the roller and penetrates through the furnace body of the drying furnace body to be movably in butt joint with a material guide bin. According to the sand drying machine, the rotary drum is arranged in the drying furnace body, meanwhile, the combustion frame is further arranged in the drying furnace body, the drum can be heated by combusting materials so that sand in the drum can be rapidly dried, and therefore it is guaranteed that the amount of dry sand used in the anchoring material preparation process is sufficient.

The application belongs to the technical field of bimetal castings, and discloses a device and method for magnetic field assisted lost foam casting of magnesium-aluminum bimetal castings. The device comprises a sand box, a cast foam pattern, a solid insert, a steady magnetic field coil, a rotating magnetic field coil and an alternating current power supply. The sand box is filled with dry sand, the cast foam pattern is arranged in the dry sand, the solid insert is embedded in the cast foam pattern, and the opposite ends of the solid insert are connected to the alternating current power supply. The steady magnetic field coil is sleeved outside the cast foam pattern, and the rotating magnetic field coil is sleeved outside the periphery of the steady magnetic field coil. The rotating magnetic field coil can produce electromagnetic stirring in the melt. The electromagnetic stirring can make the melt flow strongly, promote the migration and diffusion of high melting point precipitated phases in the melt, and thus improve the uniformity of the solidification structure of the magnesium-aluminum bimetal interface.

The utility model discloses a placer dry separation and dust removal device, which relates to the technical field of dust removal and comprises a dry separation component and a dust removal component. According to the technical scheme, airflow with raised dust at the dry separation part and the feeding port is conveyed into the multiple dust removal cavities through the pipeline set and filtered by the multiple filtering parts, so that dust removal operation is carried out, and when a certain dust removal cavity and the filtering part in the dust removal cavity need to be cleaned, the dust removal cavity and the filtering part in the dust removal cavity are cleaned by rotating the partition plate. Flying dust attached to the cavity wall of the dust removal cavity is scraped through rotation of the partition plate, and after the partition plate is driven to rotate to seal the dust removal cavity, the filtering part is convenient to replace or clean, so that cleaning of a certain dust removal cavity and the filtering part can be achieved, and normal dust removal of the dry separation part and the feeding port is not affected; and the partition plate is rotated again to facilitate dust removal operation again, so that the dust removal quality and the dust removal efficiency are improved.

The utility model discloses a dry state sand shoots sand leakage prevention automatic plugging device, including sand shooting board, a plurality of shoots are fixedly arranged on sand shooting board, sand shooting board top is provided with sand baffle, sand baffle is fixedly connected sand baffle column, sand baffle top is fixedly connected jacks, and jacks lower extreme extends to the downside of sand shooting board, and the upside of sand shooting board is fixedly provided with reset rod, and spring connection sand baffle is seted up on reset rod, and sand baffle is pressed under the action of spring force and makes sand baffle column to press tightly the sand outlet of shoot, and when shooting, the upside of upper core box abuts against the lower extreme of jacks, makes sand baffle and sand baffle column synchronous up -and -down open the sand outlet of shoot. The device utilizes jacks and upper core box linkage control sand baffle's lifting action, and sand baffle column falls back automatically after shooting, and tightly closes shoot, prevents sand from continuing to leak effectively, improves the on -the -spot cleanliness and equipment life.

The invention belongs to the technical field of material separation, and particularly discloses a dry sand powder grading separation system. Comprising a feeding mechanism, a first-stage sand powder separation tower, a second-stage fine powder classifier, a negative pressure dust collector, an air distribution plate, a through hole, an air inlet, a conical barrel, an inverted conical barrel, a fine powder and air mixing outlet, a feeding pipe, a buffer stock bin, a feeding valve, a first discharging opening, a first discharging valve, a second discharging opening and a second discharging valve. Compared with the prior art, a special air blower is not needed, negative pressure is formed in the whole system only through the induced draft fan of the negative pressure dust collector, dry sand fine powder can be graded and separated, and finished products of different grades are obtained after separation.

The invention belongs to the technical field of evanescent mode casting, and particularly discloses an evanescent mode casting automatic bottom shakeout special sand box device which comprises a sand box body used for containing an evanescent mode and shakeout and used for evanescent mode casting. The transportation frame is placed at the bottom of the sand box body and used for driving the sand box body to move; the sand shakeout component comprises two turning plates, the number of the turning plates is two, the two turning plates are oppositely arranged, the outer side ends of the turning plates are rotationally connected with the inner rod in a sleeving mode, and the turning plates are located in the leakage groove. The sliding rod is fixed to the bottom of the turning plate. The inserting rods move at the bottoms of the sliding rods through movement of the pulling plates, the sliding rods are limited through the inserting rods with different heights, and therefore the inclination angle of the turning plate in the leakage groove is limited, simple sand shakeout of the sand box body is guaranteed, the speed of dry sand falling in the leakage groove and the through groove can be adjusted and controlled, and the production efficiency is improved. And the phenomenon that dry sand with high heat is scattered on the body of a worker due to the too high sand shakeout speed is avoided.

The application discloses a magnesium alloy anti-oxidation heat treatment process, and particularly relates to the technical field of metal material heat treatment. The process comprises the following steps: mixing dry sand with a specific proportion of composite flame retardant to prepare a flame-retardant sand mold mixture; placing a magnesium alloy casting in a heat-resistant container, completely covering and vibrating the magnesium alloy casting with the mixture; and then performing programmed heat treatment in a conventional heat treatment furnace. During the high-temperature holding stage, the mixture is subjected to controllable sintering hardening, and the formed hardened sand body forms a protective layer on the surface of the casting to isolate oxidation through the synergistic effect of fluorine, sulfur, boron and other components in the sand body; on the other hand, the hardened sand body provides rigid physical support for the casting in a high-temperature softened state to prevent deformation. After the heat treatment is completed, the casting and the sand mold are separated through vibration. The process has the advantages of reliable anti-oxidation, effective anti-deformation, low cost and compatibility with conventional equipment, and is suitable for the heat treatment of magnesium alloy castings such as ZM5 and ZM6.

The utility model relates to the technical field of lost foam casting, in particular to a jolt ramming mechanism and a lost foam casting device.The jolt ramming mechanism comprises a vibrating mechanism, a plurality of vibrating motors are arranged on the outer wall of the vibrating mechanism, and a sand box is arranged above the vibrating mechanism; a plurality of supporting rods are arranged on the surface of the stabilizing plate, and damping springs are arranged above the supporting rods; the device has the beneficial effects that the vibration motors mounted on the outer wall of the vibration mechanism can be started and mounted on the front portion, the rear portion, the left portion, the right portion and the lower portion of the vibration mechanism, so that the vibration motors can apply up-down, left-right and front-back three-dimensional vibration to the sand box, dry sand can flow and be compacted more sufficiently under the three-dimensional vibration, all parts of a model can be better filled, and the sand box is more compact. The filling performance and density of the dry sand are improved, the casting defects are effectively prevented, meanwhile, the damping springs play a role in buffering vibration, the influence of vibration on the surrounding environment and equipment is reduced, and therefore the problems that the filling density of molding sand in the sand box is not uniform, and the casting quality is influenced are solved.

This utility model relates to the field of beach cleaning technology, and in particular to a beach garbage cleaning vehicle. The vehicle includes a structural frame and, sequentially, a sand-lifting component, a transport component, a separation component, and a storage component installed on its top surface. The sand-lifting component scoops up a first mixture containing garbage and sand from the beach and delivers it to the transport component. The transport component conveys the first mixture to the separation component. The separation component includes a first separation assembly, a drying assembly, and a second separation assembly. The first separation assembly receives the mixture, separates the outer layer of dry sand, and then delivers the second mixture containing the inner layer of wet sand and garbage to the second separation assembly. The drying assembly dries the inner layer of wet sand during the first separation process, transforming it into easily separable dry sand, and separates a portion of the dried inner layer of wet sand through the first separation assembly. The second separation assembly further separates the dried inner layer of wet sand and delivers the separated garbage to the storage component for storage, thereby reducing the sand content of the garbage.

The application discloses an aerated concrete block cured by cement kiln tail flue gas and a preparation method thereof, and belongs to the technical field of concrete materials. The aerated concrete block comprises 20-30 parts of carbon-fixing cementitious material, 30-40 parts of dry sand, 1-5 parts of heavy calcium powder, 0-5 parts of dihydrate gypsum and 35-45 parts of water. The preparation method comprises the steps of batching, stirring and pouring, static stopping, cutting and curing. The application is scientific and reasonable in design and convenient to use. The carbon-fixing cementitious material is used to prepare the aerated concrete, and the aerated concrete is cured by the cement kiln tail flue gas. The alkaline mineral in the aerated concrete can quickly react with the acid gas in the flue gas, the hydration-heat combination-acidification ternary reaction of the aerated concrete body is realized, the strength of the aerated concrete is quickly improved, and energy saving and emission reduction are truly realized.

The application relates to the technical field of building gypsum, and discloses a composite gypsum-based self-leveling mortar and a preparation method thereof, which comprises phosphorus building gypsum, a composite additive and auxiliary materials; according to the mass fraction, the composite additive comprises 0.05-0.3% of a reinforcing agent, 0.02-0.2% of a defoaming agent, 0.03-0.2% of a gypsum retarder, 0.02-0.2% of a stabilizer, 0.01-0.1% of a toning agent and 0.05-0.4% of a flow aid; the auxiliary materials comprise 2-20% of dried sand, 0.01-0.5% of calcium oxide, 0.1-2% of calcium carbonate, 1-6.5% of ceramic microspheres and 0.1-0.5% of anti-cracking fibers; and the balance is phosphorus building gypsum. The application controls the types and dosages of the raw material components of the gypsum-based self-leveling mortar, so that the components can be combined with each other; and the material performance defects of the current self-leveling mortar taking phosphorus building gypsum as the main gel material, such as low strength, easy cracking and poor fluidity, can be solved.

The utility model discloses a multifunctional adjustable dry sand box for a 3D printing sand mold. The multifunctional adjustable dry sand box comprises a bottom plate, a pair of L-shaped baffles, a cover plate and a limiting assembly. The bottom plate is rectangular, the baffles are spliced into a rectangular fence through screws and installed on the bottom plate, and triangular reinforcing blocks are arranged on the inner sides of the baffles to enhance rigidity. The cover plate is detachably installed on the fence, and the cover plate, the bottom plate and the fence jointly form the dry sand box. The limiting assemblies are arranged in the dry sand box in an array mode and used for limiting the sand mold, and the position precision of the sand mold in the 3D printing process is ensured. And the baffle is provided with the turnup and is detachably connected with the cover plate, the bottom plate and the other baffle through the mounting holes, so that the structural stability is enhanced. A round hole is formed in the middle of the bottom plate so that liquid alloy can be conveniently injected into a sand mold. Supporting strips and lifting handles are arranged on the outer sides of the baffles, and carrying and operation are convenient. Through the detachable structure and the adjustable limiting assembly, the device is suitable for sand molds with different sizes, the part taking process is simplified, the production efficiency is improved, and the maintenance cost is reduced.

The utility model discloses a dry sand screening machine, which relates to the technical field of screening machine equipment and comprises an outer barrel, a plurality of groups of first connecting blocks are fixedly mounted on the outer side of the outer barrel, a base is fixedly connected to the inner sides of the first connecting blocks, a first discharge pipe is mounted on one side of a first screening disc, and a second discharge pipe is mounted on one side of a second screening disc. The bottom of the collecting hopper is connected with a third discharging pipe, and the first screening disc filtering holes are larger than the second screening disc filtering holes. According to the utility model, through the reciprocating rotary motion of the first screening disc and the second screening disc, the motion range of dry sand on the screening surface is expanded, so that the dry sand can be distributed more uniformly, local accumulation is avoided, and the screening comprehensiveness is improved; and in cooperation with a transmission structure of a gear ring and a driving gear, a spring can guarantee the stability and the buffering effect of the structure, the first screening disc, the second screening disc and the collecting hopper are provided with a first discharging pipe, a second discharging pipe and a third discharging pipe correspondingly, dry sand with different particle sizes can be collected and discharged conveniently, and convenience of follow-up treatment is improved.

This invention discloses an automatic mortar proportioning and stabilization mixing control method based on online moisture content detection, relating to the field of mortar production and proportioning control technology. The method first performs online moisture content detection on the wet sand entering the mixing system. Based on the real-time moisture content data, the wet sand feed amount is converted into an absolute dry sand baseline amount, and the target total water consumption, the initial planned water addition, and the reserved correction water amount are determined in conjunction with a preset mortar masterbatch formula. Then, the first water addition and mixing are performed. During the initial discharge stage, the state parameters of the first wave of material are collected within a preset first-wave material verification window and compared with a preset target range. When the state parameters of the first wave of material are lower than the preset target range, a limited secondary water addition is performed, and mixing continues until the stabilization endpoint is reached, at which point the finished mortar is output. This invention can improve the mortar proportioning accuracy, discharge continuity, and batch consistency under fluctuating wet sand conditions.

The invention relates to the technical field of sand making, in particular to a fine crushing and shaping device for a dry-method sand making machine. According to the technical scheme, the machine comprises a machine frame, wherein a shaping cavity and a discharging opening located below the shaping cavity are formed in the machine frame; the driving device is mounted on the rack; the shaping assembly is rotatably arranged in the shaping cavity, is in transmission connection with the driving device and is used for crushing and shaping the materials through rotation; the adjustable feeding mechanism is arranged above the shaping assembly, located in the shaping cavity and used for guiding materials to the shaping assembly; wherein the adjustable feeding mechanism is in transmission connection with the shaping assembly, and the adjustable feeding mechanism is constructed to be capable of adaptively adjusting the amount of materials passing through the shaping assembly in unit time according to the rotating state of the shaping assembly. Cooperative regulation and control of feeding and shaping are achieved through the linkage structure, material blocking and idling are avoided, the sand making efficiency and the finished product quality are improved, and energy consumption and operation and maintenance cost are reduced.

The utility model discloses a damp-proof storage bin for dry sand, which relates to the technical field of material storage devices and comprises an outer barrel, an inner barrel is fixedly mounted in the outer barrel, an air inlet pipe is connected to the top of a sealing cover and penetrates through a top cover, and a plurality of groups of exhaust pipes matched with the inner barrel for use are fixedly mounted at the bottom of a second air guide ring. A plurality of groups of nozzles are fixedly mounted on the inner side of the exhaust pipe and penetrate through the inner barrel, and a plurality of groups of filter holes are formed in the inner barrel. Through cooperative work of stirring and air guiding, the material processing quality is greatly improved, the stirring rod is driven by the motor to continuously stir and disturb dry sand in the inner barrel, the dry sand is effectively prevented from caking due to long-time accumulation or damp, the loose state of the dry sand is maintained, and convenience is provided for subsequent use; the damp-proof layer of the outer barrel and the inner damp-proof material act together to resist external moisture, the dry state of the dry sand is further maintained, the stable material quality is ensured, the storage time is prolonged, and the use performance is improved.

The invention discloses a water jet surface treatment method for a titanium alloy large-size blade of a heavy duty gas turbine, which is characterized in that a surface treatment system is constructed on the basis of a sand-water mixed supply system and a high-pressure water jet device, a sand-water mixture is driven by high pressure to impact the surface of the blade to finish surface treatment, and a mixture of water and sand is used as a jet medium; dust pollution caused by dry sand blasting is avoided, and harm to the health of operators is reduced; meanwhile, a sand-water mixture can be subjected to solid-liquid separation through a sedimentation tank, sand can be recycled after being cleaned, water resources can be recycled after being filtered, the material consumption and waste water discharge cost is reduced, the adjustable spraying gun head and the tool platform with the rotary positioning effect are rotationally controlled, the tool platform is matched with the complex profile of the titanium alloy large-size blade, and the machining efficiency is improved. The problem of local excessive polishing or insufficient treatment is avoided; and the impact force of the sand-water mixture is more uniform under the driving of high-pressure water flow, and is superior to that of a traditional sand blasting process.

The utility model relates to the technical field of foundry molding sand recovery, in particular to a foundry molding sand recovery and impurity removal device which is characterized in that a drying assembly is started to dry caked foundry molding sand, and then a crushing assembly is started to crush the dried molding sand; and then the recycled casting molding sand is discharged through the discharging assembly. Comprising a supporting frame, a shell, an arc-shaped filter screen, telescopic rods, springs, a vibration motor and fixing plates, the left end and the right end of the shell are each provided with a set of fixing plates, the multiple sets of telescopic rods are arranged between the fixing plates and the supporting frame, the outer side wall of each set of telescopic rods is sleeved with a set of springs, and the arc-shaped filter screen is installed in the shell; the device further comprises a drying assembly, a crushing assembly and a discharging assembly, the discharging assembly is arranged at the bottom end of the shell, the crushing assembly is installed in the shell on the inner side of the arc-shaped filter screen, the drying assembly is installed on the supporting frame, and the output end of the drying assembly extends into the shell.

The invention belongs to the technical field of dust removal equipment, and particularly relates to a dust removal device of a dry-mixed mortar production system capable of adjusting dry sand gradation, which comprises an air inlet barrel and an air inlet shell, the air inlet barrel fixedly communicates with the air inlet shell and is used for introducing dust-containing air, and the dust removal device further comprises a spraying dust removal assembly, an air inducing assembly, a negative pressure suction assembly and a filter pressing assembly, the spraying dust removal assembly is installed between the air inlet shell and the air inducing assembly in a sealed mode. Gas-liquid contact is enhanced and air flow dead angles are eliminated in an upper-spraying and lower-sucking synergistic mode, efficient interception and filtration of dry-mixed mortar production dust, temperature control below ignition temperature, static elimination and charge export are synchronously realized, flammable dust explosion risks are avoided from the source, dust treatment quality and efficiency are improved, and the dust treatment effect is improved. Dust-carrying spraying liquid can be deeply treated, so that dust recycling and water resource circulation are achieved, and the resource and energy utilization efficiency is remarkably improved.

The invention relates to a dry-wet separation method crushing production system and method and a storage medium, and belongs to the technical field of ore crushing sand making, and the system comprises a sludge front separation module used for separating sludge on the surface of ore master batch from the surface of ore; the sludge detection module is used for detecting whether the sludge on the surface of the ore formed by the sludge pre-separation module is qualified in cleaning, if yes, the ore flows into the next procedure, and if not, the ore returns to the sludge pre-separation module for treatment; the dry sand making module is used for crushing the ores detected to be qualified by the sludge detection module and collecting dust generated in the sand making process; wherein the sludge pre-separation module is physically isolated from the dry-method sand making module, and the sludge detection module is arranged between the sludge pre-separation module and the dry-method sand making module. The problem that sludge on the surface of the ore is separated before the ore is crushed is solved, dry-method sand making is achieved, sand making is completed in the closed isolation device, and ore powder is recycled through the collecting device.

The application relates to a moisture content control method of a dry sand making building, belonging to the field of machine-made sand, which comprises the following steps: obtaining the moisture content of raw materials, performing corresponding treatment according to the moisture content of the raw materials to obtain qualified raw materials in terms of the moisture content; making the qualified raw materials into primary crushed sand; obtaining the moisture content of the primary crushed sand, performing corresponding treatment according to the moisture content of the primary crushed sand to obtain qualified finished sand in terms of the moisture content; and performing pretreatment on the finished sand before storage and transportation based on the weather condition in the current period and a future period. Beneficial technical effects: the moisture content control method of the dry sand making building can dynamically adjust sand making process parameters according to multi-dimensional parameters such as the moisture content of raw materials, the moisture content of primary crushed sand and environmental weather, and effectively adapt to production requirements under different raw material conditions and different environmental humidity.

This utility model relates to the technical field of hydraulic aggregate preparation systems, specifically to a multi-mode adjustable hydraulic aggregate preparation system. The system includes a coarse crushing mechanism, a dual-mold medium crushing mechanism, a primary screening component, a secondary screening component, a sand making and shaping mechanism, a sand washing mechanism, a sand making mechanism, large stone finished product bins, medium stone finished product bins, small stone finished product bins, a dry sand bin, and a wet sand bin. The coarse crushing mechanism is connected to the dual-mold medium crushing mechanism; the dual-mold medium crushing mechanism is connected to the primary screening component; in the primary screening component, its oversized stone outlet is connected to the dual-mold medium crushing mechanism, its first large stone outlet is connected to the large stone finished product bin or to the dual-mold medium crushing mechanism, its second outlet is connected to the sand making and shaping mechanism, and its third outlet is connected to the sand washing mechanism; the sand making and shaping mechanism is connected to the secondary screening component; the first dry sand outlet of the sand making mechanism is connected to the dry sand bin, while its diversion outlet is connected to the sand washing mechanism. The system has a multi-mode adjustment function.