412 results about "Molding sand" patented technology

The invention discloses a casting density optimization system and method based on cooperative regulation and control of molding sand moisture and clay blue absorption amount, and relates to the technical field of casting control. According to the method, a self-cleaning wear-resistant alloy probe is used for synchronously collecting a molding sand high-frequency eddy current signal and a multi-spectrum near-infrared signal in the sand mixing process; inputting a pre-training support vector machine regression signal fusion model to obtain a real-time moisture content and a clay blue absorption amount; a preset density target threshold value is combined, a density-molding sand parameter association database is inquired to determine a parameter target interval, a regulation and control instruction is generated after a deviation value is calculated, and a water adding device and a clay conveying device are controlled to adjust the use amount; the density of the casting after regulation and control is detected, if the density does not reach the standard, model output weight iteration optimization is corrected until the density reaches the standard, the system comprises a detection module, a signal processing module, a regulation and control execution module, a density detection and correction module and a central control module, closed-loop control is achieved, and the density stability of the casting is improved.

The invention relates to the technical field of casting molds, and discloses an automobile planet carrier casting mold which comprises a mold plate arranged between an upper mold and a lower mold, an upper sand mold, a lower sand mold, a sand core and a sprue are installed on the mold plate, and the sand core is located between the upper sand mold and the lower sand mold and used for blocking cavity communication of the upper sand mold and the lower sand mold; guide columns corresponding to the upper and lower dies are mounted on the upper and lower end faces of the template, and are inserted into guide holes of the upper and lower dies, so that accurate die assembly is realized. Through combination of the upper sand mold, the lower sand mold and the sand core, the mold can mold an upper casting and a lower casting at the same time by using the sand core to block communication of the mold cavity, the production efficiency is greatly improved, the thickness of the sand core is set to be 0.8 times of the wall thickness of the casting, shrinkage porosity linearity caused by a hot spot in the casting can be avoided, and meanwhile, the production efficiency is improved. The pouring gate supplies liquid to the upper sand mold and the lower sand mold through the residue filter, impurities in molten metal are removed through the filtering assembly, the shrinkage porosity defect caused by the impurities is reduced, and therefore the qualification rate of castings is increased.

The utility model discloses a shakeout roller device for casting molding sand separation, which is characterized in that an inner cylinder is arranged inside an outer cylinder, the inner cylinder is connected with a first discharge port through a first bearing, the inner cylinder is in a straight cylinder shape, the left side of the inner cylinder is connected with the outer cylinder through a second bearing, a rack is arranged on the circumference of the outer side of the left end of the inner cylinder, and a motor is arranged at the upper part of the outer cylinder; according to the sand shakeout device, the inner cylinder and the outer cylinder are arranged, so that molding sand enters the outer cylinder after being separated, the molding sand is prevented from being accumulated in the inner cylinder, a buffering function is achieved on a casting, the sand shakeout effect is improved, and the molding sand is prevented from being left on the casting; and the device is further provided with first shifting teeth and second shifting teeth which are staggered with each other, molding sand cakes falling into the outer cylinder are crushed, the subsequent crushing treatment procedure of the molding sand cakes is omitted, manpower, material resources and time are saved, the subsequent treatment cost of the molding sand is reduced, and good practicability and applicability are achieved.

The utility model relates to the technical field of sand screening machines, in particular to a vibration swing type sand screening machine for molding sand. According to the technical scheme, a discharging hopper is installed on a base, a sieve tray is installed on the discharging hopper, a discharging pipe is arranged on one side of the sieve tray, a top cover is installed at the top end of the sieve tray, a support is elastically installed on the base through a spring, and vibration motors are installed on the two sides of the support. An upper sealing strip and a lower sealing strip are respectively arranged on convex edges at the upper end and the lower end of the sieve tray, a positioning hole is formed in the upper sealing strip, and a positioning block is arranged on the lower sealing strip. The upper sealing strip and the lower sealing strip are respectively arranged on the convex edges at the upper end and the lower end of the sieve tray, and are matched with each other through the positioning blocks and the positioning holes to realize quick limiting and butt joint, so that the tight sealing between the sieve trays is realized. And the hoop is clamped and fixed with the convex edge of the sieve tray through the clamping groove, so that stable connection can be provided, and the sieve tray is ensured not to loosen or fall off in the vibration process.

The invention relates to the technical field of casting devices, and particularly discloses a pump valve casting casting demolding device which comprises a recycling box, a cross beam is fixedly arranged on the recycling box, the cross beam is close to the middle, a bearing structure is fixedly arranged on the cross beam, and a limiting structure is fixedly arranged on the bearing structure. A loading unit is detachably mounted on the bearing structure, the loading unit is fixed through a limiting structure, and a separating structure is detachably mounted on the limiting structure. Through the sealing fit design of the loading unit and the precise pushing design of the separating structure, molding sand is automatically scattered and recycled after the box bottom and the pouring jacket are separated; the casting is stably moved out through directional pushing of the push plate, and the problem that the casting is difficult to take out in the lost foam casting process is thoroughly solved.

The utility model relates to the field of casting hole sanding devices, in particular to a casting hole sanding device which comprises a shell. A movable door is installed on the side face of the shell, high-pressure impact assemblies are arranged on the side wall, opposite to the movable door, of the shell, the two side walls adjacent to the movable door and the top of the shell, a separation assembly is arranged on the side wall of the shell in a penetrating mode, and the output end of the pressure pump communicates with the multiple sets of high-pressure impact assemblies installed on the shell. Sand in a casting hole is impacted and removed through high-pressure water flow, a spiral blade can drive an inner hollow shaft to rotate in a hollow pipe port under driving of the water flow, and the spraying angle of a spraying head on a spherical shell can be adjusted when the spherical shell rotates, so that spraying impact is conducted on the surface of a casting from multiple angles, and the sanding effect is improved; the water flow permeates downwards to be stored in the precipitation bin for precipitation, the water-permeable belt conveys the molding sand intercepted on the water-permeable belt out of the shell, and the molding sand is collected into the collection bin and then remains on the filter plate, so that the molding sand is reused after being dried.

The invention relates to the technical field of casting equipment, and particularly discloses a molding sand treatment device for casting a tractor saddle support, which comprises a rack, a coarse sieve plate is arranged at the upper part of the rack, a screening mechanism and a cleaning mechanism are further arranged on the rack, the screening mechanism comprises a fine sieve plate, a crushing plate and an adsorption assembly, and the fine sieve plate is obliquely arranged below the coarse sieve plate; the crushing plate is obliquely suspended above the fine screen plate, a wedge-shaped crushing gap is formed between the crushing plate and the fine screen plate, the caking molding sand can be rubbed and crushed through reciprocating movement of the crushing plate, the adsorption assembly comprises a plurality of magnetic mounting plates arranged below the fine screen plate, and the cleaning mechanism comprises a scraper blade and a collecting box. The collecting box can push the vertically drooping mounting plate to turn over to a cleaning state, the scraping plate scrapes and sweeps the surface of the turned mounting plate, and the collecting box moves along with the scraping plate and collects scraped scrap iron; according to the invention, screening, crushing and iron removal operations in a non-stop state are realized, and the production efficiency is greatly improved.

The application provides a low-carbon development green casting application demonstration center, which comprises a molding sand storage area for storing various molding sands used in processing; a negative pressure blank preparation area provided with an automatic sand mixing device, a vibration compaction device and a negative pressure molding device, which is used for preparing frozen sand blanks with a set water-sand mixing ratio and an outer shape size; a frozen processing area provided with a vertical cutting forming equipment for frozen sand molds, a horizontal cutting forming equipment for frozen sand molds and a printing forming equipment for frozen sand molds, which are used for processing frozen sand molds (cores); a cryogenic storage area provided with a cryogenic refrigerator and a partition gradient refrigerator; a smelting and pouring area provided with a negative pressure pouring device; a material transfer channel, which is a special channel planned for an AGV carrier; and a central control system for monitoring and controlling the states of various regional modules and coordinating and planning the actions of each region. The application adopts digital and intelligent equipment, has high production efficiency, high precision and quality of obtained castings, and sand drop can be recycled and reused, and the processing process is green, clean and pollution-free.

The utility model discloses a vibration shakeout device for casting production, which comprises an equipment shell, an equipment frame arranged on the inner side of the equipment shell, four base plates respectively arranged at four corners of the equipment shell, supporting upright posts connected with the base plates through spring structures, and reinforcing cross beams arranged on the inner side wall of the equipment shell, a reinforcing vertical beam is arranged on the outer side wall of the equipment shell, two symmetrically-distributed vibration motors are arranged on the outer side wall of the equipment shell, a feeding guide plate is arranged at the left end of the equipment frame, a discharging guide plate is arranged at the right end of the equipment frame, and the lower end of the discharging guide plate is connected with the equipment frame through a discharging supporting frame. According to the utility model, the functions of improving the discharging efficiency, reducing the damage degree of the surface of a casting and conveniently recovering and conveying molding sand are realized.

This utility model relates to the field of sand filter cleaning technology and provides a V-type sand filter ultrasonic rotary spray device, comprising: a sand filter body; an ultrasonic generator installed on the outer wall of the other side of the sand filter body; ultrasonic transducers uniformly fixedly installed on the inner wall above the filter media tank; a spray mechanism movably installed at the top of the fixed pipe and branch pipe; and a protective filter screen uniformly installed at the top of the spray mechanism. The V-type sand filter ultrasonic rotary spray device provided by this solution utilizes the operation of the ultrasonic generator to cause multiple ultrasonic transducers on the upper layer of the filter media in the filter media tank to generate ultrasonic vibrations, performing ultrasonic cleaning on the upper layer of filter media. This is combined with the main nozzle and inclined nozzle rotating to spray and rinse, and then with the operation of a second water pump to draw water into the water supply pipe. The water flowing through the water supply pipe enters multiple connecting pipes and is then sprayed out through multiple flushing heads to rinse and remove contaminants, achieving efficient rinsing of the filter media above the filter media tank.

The utility model relates to the technical field of casting sand mixers, and discloses a casting sand mixer convenient to adjust discharge flow, which comprises a machine body, and a control box is fixedly mounted at the top of the machine body. A manual operation control panel can drive a rotating disc to rotate when sliding on the outer side of a fixed disc, a connecting rod is driven to slide on the surface of the rotating disc when the rotating disc rotates, and one end of a control block can be driven to move in the sliding direction of the connecting rod when the connecting rod slides, so that the control block moves towards the center point close to the fixed disc; when the discharging pipe rotates reversely, the hole diameter of the discharging pipe can be reduced, so that the discharging flow is reduced, on the contrary, the hole diameter of the discharging pipe can be enlarged when the discharging pipe rotates reversely, and the situation that the casting size deviates due to the fact that the amount of molding sand filled into a mold does not meet the design requirement when the flow is too large or too small during discharging of the discharging pipe is prevented. And the production efficiency and the working convenience are improved.

The utility model discloses a high-stability sand-based water-permeable brick capable of fully draining water, relates to the technical field of water-permeable bricks, and aims to solve the problems that the conventional water-permeable brick is lack of a more efficient water-draining structure and the water-draining performance needs to be further improved because the water-permeable brick is used for draining rainwater by virtue of the water-permeable performance of the conventional water-permeable brick. According to the technical scheme, the water permeable brick is characterized by comprising a water permeable brick body, a confluence cavity is formed in the lower surface of the water permeable brick body, a plurality of confluence holes are formed in the water permeable brick body, the cross sections of the confluence holes are circular, the confluence holes are distributed side by side, and a plurality of drainage holes are formed in the inner end face of the confluence cavity. The drainage holes are communicated with the interiors of the confluence holes, supporting protrusions are integrally connected to the upper surface of the water permeable brick body, and a plurality of first drainage grooves are formed in the upper surfaces of the supporting protrusions. And the effects of rapid drainage operation and full drainage are achieved.

The utility model discloses a three-in-one shakeout machine which comprises a fixed machine frame, a rotating frame, a workpiece fixing table, a hammering mechanism, a vibrating mechanism and a turnover mechanism, the rotating frame is rotatably installed on the fixed machine frame, the turnover mechanism comprises a turnover motor, the turnover motor drives the rotating frame to rotate, the workpiece fixing table is fixedly connected with the rotating frame, and the hammering mechanism is fixedly connected with the workpiece fixing table. A plurality of workpiece clamping mechanisms are installed on the workpiece fixing table, the vibration mechanism comprises a plurality of vibration motors, and the hammering mechanism comprises a plurality of air hammers. According to the three-in-one shakeout machine, the vibration mechanism, the hammering mechanism and the turnover mechanism are cooperated, efficient shakeout can be achieved, and compared with traditional equipment, the working procedure time is greatly shortened. Workpiece positions can be flexibly adjusted, and complex casting molding sand can be cleaned in all directions. The workpiece clamping mechanism is stable, and the shakeout effect is guaranteed. The waste collection hopper and the isolation room achieve waste centralized collection and noise reduction respectively, and the working environment is optimized.

The utility model relates to the technical field of elbow processing, and provides a sand mixing device for processing elbows, which comprises a support frame, a support shaft rod fixedly connected to the top end of the support frame, an assembly frame rotatably connected to the middle of the support shaft rod, a sand carrying cylinder fixedly connected to the bottom end of the assembly frame, and a guide through groove formed in one end of the support frame, a linkage rod is fixedly connected to the side, close to the guide through groove, of the sand carrying cylinder and further movably connected into the guide through groove, a transmission assembly is arranged at the end, close to the linkage rod, of the supporting frame and used for being matched with the linkage rod to drive the sand carrying cylinder to swing, and a sand mixing assembly is arranged in the sand carrying cylinder. The transmission assembly comprises a displacement plate, a linkage through groove, an extension base and a driving motor. By means of the technical scheme, the problems that in the prior art, the mixing mode is single, the sand mixing roller is difficult to make full contact with molding sand, and blind areas are prone to occurring on the whole are solved.

This invention discloses a sand mold forming die, relating to the field of mold equipment technology. The forming die can form a mold body from molding sand in one step, and two sets of mold bodies can be joined to form a complete sand mold. Specifically, it includes: a bottom mold, a top mold, and an interface plate. The bottom mold has a first shaping surface for forming the external shape of the mold body, and the top mold has a second shaping surface for forming the internal shape of the mold body. When the bottom mold and the top mold are joined, the first shaping surface and the second shaping surface are opposite each other. The interface plate is movably placed on the first shaping surface to form a connecting part on the outside of the mold body during molding. After the mold bodies are joined to form a sand mold, different sand molds can be connected in series through the connecting part. This invention can use a single type of mold to manufacture different types of mold bodies that can be joined together, greatly improving the preparation efficiency and economic benefits of sand molds.

The utility model discloses a roller tool modeling and positioning device which comprises a positioning bottom plate, a box sample is detachably installed on the positioning bottom plate, a heightening ring sample is detachably installed on the top of the box sample, the positioning bottom plate, the box sample and the heightening ring sample are coaxially distributed and combined to form a modeling mold, and a roller sample mold is inserted in the axis of the modeling mold during modeling. According to the utility model, the positioning bottom plate, the box sample and the heightening ring sample are combined to form the modeling mold, the first cushion layer and the second cushion layer are matched to improve the fitness and the stability between the structures, the roller sample mold is clamped into the axis part in the modeling mold, and the roller sample mold is supported and limited from the top end of the roller sample mold through the supporting mechanism; the space between the roller sample mold and the box sample is filled with the molding sand and tamped to form the molding sand layer, the roller sample mold cannot be eccentric or inclined due to vibration, the roller sample mold is pulled out after molding, a mold cavity is formed in the molding sand layer, a roller workpiece is poured, and compared with the prior art, positioning is more accurate, the roller pouring precision is improved, and the yield is increased.

The utility model relates to a molding sand feeding device for droplet jet molding equipment. According to the molding sand feeding device for the droplet jet molding equipment, the interior of a vacuum feeding barrel and the position of a feeding opening are processed into a vacuum environment through a vacuum source, molding sand is conveniently sucked and conveyed into the vacuum feeding barrel, the molding sand falls into a conveying barrel through a discharging opening under the action of the gravity of the molding sand, and a driving mechanism drives a rotating shaft to drive a spiral blade to rotate; molding sand in the conveying cylinder is conveyed to the discharging station from the feeding station, the molding sand at the discharging station enters the quantitative sand discharging device through the discharging port and the sand guiding pipe under the action of the gravity of the molding sand, and therefore the spiral conveying assembly and the vacuum feeding assembly are matched with each other; the connection position between the molding sand feeding device and the quantitative sand discharging device for the micro-droplet jet molding equipment does not blow back and overflow sand due to the negative pressure characteristic, the phenomenon that the molding sand overflows due to negative pressure blowback caused by direct vacuum feeding is effectively avoided, and the probability that a movement module is damaged due to serious sand accumulation is reduced.

The utility model discloses centrifugal pump impeller casting processing equipment which comprises a pressing block and a mold, the lower end of the pressing block is an inclined plane and is used for pushing molding sand in the pressing block and enabling the molding sand to approach the edge of the mold after the pressing block enters the mold, and a frame-shaped pressing block is sleeved on the outer side wall of the pressing block and is used for compacting the molding sand between the pressing block and the mold. Through the arranged pressing block and the inclined surface of the pressing block, molding sand placed in the mold can be driven to downwards push the molding sand when the first telescopic component extends, so that the molding sand moves towards the edge of the mold, the molding sand is limited through the pressing block, and then through the extension of the second telescopic component, the frame-shaped pressing block compacts the formation between the pressing block and the mold; and in the compaction process of the molding sand, the molding sand moves between the pressing block and the mold, so that the compaction surface of the edge is smoother.

The invention relates to the technical field of casting islands, in particular to molding sand surface processing equipment based on an electric automatic intelligent casting island, and solves the problems that when a casting island is used for sand mold casting, when a binding agent or a release agent is sprayed and attached to a sand mold, redundant binding agent or release agent can flow along the edge of the sand mold, and the casting island is damaged. Therefore, the problem that the strength of a sand mold or the demolding of a workpiece is affected due to non-uniform distribution of a binder or a demolding agent is solved. The molding sand surface machining treatment equipment based on the electric automatic intelligent casting island comprises a fixing base, a smooth transfer table is embedded in the surface of the fixing base, the surface of the smooth transfer table is smooth and free of burrs, roller type conveying tables are fixed to the two ends of the fixing base, and the roller type conveying tables are used for conveying sand molds and spraying the bottoms of the sand molds. The side baffles and the moving direction baffles are used for shielding the side faces of the sand mold, a curing agent or a release agent is prevented from flowing along the edge of the sand mold during spraying, and it is guaranteed that the thickness of the curing agent and the release agent on the edge of the sand mold is uniform.

This utility model relates to the field of lost foam casting technology and discloses a lost foam casting device for automotive drive axle housings. It includes a base, a frame mounted above the base, a casting box fixedly connected to the inner wall of the frame, a sand outlet on the lower surface of the casting box, a recovery assembly below the sand outlet, and a filter assembly outside the base. The recovery assembly includes a baffle, a collection box, and a sieve plate. A first hinge seat is fixedly connected to the outer wall of the frame, and a second hinge seat is fixedly connected to the outer wall of the baffle. A hydraulic rod is rotatably connected to the inner wall of the first hinge seat, and the output end of the hydraulic rod is rotatably connected to the inner wall of the second hinge seat. In this utility model, after casting is completed, the baffle is opened and closed automatically via a hydraulic drive device, achieving automatic opening and closing of the sand outlet. The molding sand falls into the collection box through the sieve plate for initial screening. Coarse sand is directly recycled, while fine sand is separated through the sieve plate, improving the efficiency of old sand recycling and reducing labor intensity.

The invention discloses a two-component furan resin binder for molding and a preparation method of molding sand for casting, and the binder comprises furan resin and alkyl alkoxy silane, the alkyl alkoxy silane comprises a compound with a structure as shown in a formula (I) and / or a formula (II), the formula (I) is (OR1) m1 (R2) 4-m1Si, and the formula (II) is (OR3) n1 (R4) 3-n1Si-R5-Si (R6) 3-n2 (OR7) n2; wherein R1, R3 and R7 are respectively and independently selected from alkyl with the carbon atom number of 1-20, R2, R4 and R6 are respectively and independently selected from alkyl with the carbon atom number of 1-20 and alkenyl with the carbon atom number of 2-20, R5 is selected from alkylene with the carbon atom number of 1-20 and alkenylene with the carbon atom number of 2-20, m1 is 1, 2, 3 or 4, and n1 and n2 are respectively and independently 1, 2 or 3. The adhesive disclosed by the invention has excellent curing performance and excellent deep curing performance, and meanwhile, the curing speed can be increased, and the emission of harmful substances can be reduced. The molding sand prepared by using the binder disclosed by the invention has high tensile strength and excellent heat resistance and moisture resistance.

The utility model relates to the technical field of casting sand molds, in particular to a 3D (three-dimensional) printing sand mold structure for casting a supercharger shell, which comprises an upper sand mold, a middle sand mold, a lower sand mold and a movable block, the middle sand mold comprises a sand core, a base, reinforcing ribs and a support column, the upper sand mold, the sand core and the lower sand mold are sequentially buckled from top to bottom to form an integral sand mold, and the movable block is arranged on the upper sand mold. A casting cavity similar to a supercharger shell to be cast in shape is reserved in the integral sand mold, an exhaust hole communicated with the interior of the casting cavity is formed in the upper sand mold, a sand cleaning opening matched with the movable block is formed in the lower portion of the bottom of the lower sand mold, and the movable block is embedded in the sand cleaning opening in a matched mode in the mode that the movable block can be taken out. The parting structure design, the sand core 3D printing mode and the sand cleaning opening movable block are adopted, the air suffocation problem in casting and later sand cleaning work are solved, auxiliary supporting of the base, the reinforcing ribs and the supporting columns for the printing sand core is added, the risk of sand core deformation is eliminated, and the casting efficiency and the casting quality are guaranteed advantageously.

The utility model discloses a multi-angle uniform sand spraying device for casting processing. The multi-angle uniform sand spraying device comprises a stock bin and a collecting bin, the casting wax mold sand spraying device has the beneficial effects that the mounting disc and the overturning disc are adopted, when sand spraying is carried out on a casting wax mold, the casting wax mold can be fixed on the top surface of the mounting disc, then the stepping motor can be started to drive the rotating disc to rotate, the top hole is aligned with the bottom hole, and molding sand in the stock bin can fall and be sprayed on the top surface of the casting wax mold; the driving motor drives the mounting disc to rotate and drives the casting wax mold to rotate, the sand spraying uniformity is improved, meanwhile, the brake motor drives the main shaft to rotate, drives the overturning disc to overturn by 90 degrees and drives the casting wax mold to overturn by 90 degrees, the rotation state is kept all the time, molding sand is sprayed to the surface of the side wall of the casting wax mold, and uniform sand spraying is completed. And when the casting wax mold which is vertically overturned rotates, locally over-thick molding sand can freely fall under the action of gravity, so that the molding sand spraying uniformity and the molding sand spraying completeness are improved, and the sand spraying working efficiency is further improved.

This utility model discloses a casting mold with anti-sand-fall-off process design, belonging to the field of casting molds. It includes a casting table, on which a lower template and an upper template are provided. The lower template is provided in two sets, and the two sets of lower templates are combined to form a mold cavity. The size of the mold cavity is adapted to the upper template. A plug-in plate is provided below the lower template, and the plug-in plate is provided on an adjustment seat. The adjustment seat is connected to a two-way screw. By designing the two sets of lower templates to be separable left and right, in the mold opening and part removal process, the two sets of lower templates can be separated horizontally, replacing the traditional integral template and the overall pulling and separation method of the casting and molding sand. During the separation process, the concentrated pulling force of the mold inner wall on the molding sand is dispersed into the lateral separation force of the two sets of templates, effectively avoiding the breakage of the molding sand and the mold cavity interface in stress concentration areas such as the corners of the casting, and reducing sand drop from the key stage of mold opening where sand falls off frequently.

The utility model belongs to the field of industrial casting, particularly relates to an accurate sand adding device for a horizontal molding line, and provides the following scheme aiming at the problems that a conveying belt is unstable in feeding during feeding and molding sand is inconvenient to discharge when the feeding is excessive in the prior art: the accurate sand adding device comprises a rack and a hopper arranged at the top of the rack, a plurality of weighing sensors are fixedly mounted between the bottom of the hopper and the top of the rack, one side of the hopper is fixedly connected with a through mounting pipe, one end of the mounting pipe is communicated with the hopper, the bottom of the mounting pipe is fixedly connected with a discharging pipe for discharging raw materials, and a through driving shaft is rotationally connected between the two ends of the mounting pipe; according to the molding sand feeding device, excessive molding sand in the hopper is discharged through the feeding blades, so that the weight error of the molding sand in the hopper is reduced, the sand feeding accuracy is improved, meanwhile, the hopper can vibrate, the molding sand is prevented from staying and being attached to the interior of the hopper, and the feeding accuracy is further improved.

The application relates to the technical field of sand recycling devices, and particularly provides a sand recycling device for V-process casting, which comprises a supporting table, a baffle, a material receiving unit, a cooling unit and a baffle plate. The baffle is arranged above the supporting table through a connecting plate. The material receiving unit comprises a first telescopic cylinder, a second telescopic cylinder, a screen, a supporting frame, a blocking frame and a brush. The first telescopic cylinder and the second telescopic cylinder are fixed to one side of the supporting table. The output shaft of the first telescopic cylinder is fixed to one side of the screen. The output shaft of the second telescopic cylinder is fixed with the supporting frame. The bottom of the blocking frame is fixed with the brush. The baffle plate is fixed in the supporting table. The cooling pipe is fixed below the baffle plate. The blocking frame is arranged to separate the casting and the sand. The second telescopic cylinder can drive the blocking frame to move, and then drive the brush to move. The screen is displaced under the drive of the first telescopic cylinder, and the sand falls under the cooperation of the screen and the brush. The sand is cooled by the baffle, and the cooling speed is high.

This invention relates to the field of casting molding sand preparation technology, and more particularly to a casting molding sand based on the carbonization of waste rice straw and its preparation method. The molding sand is composed of the following raw materials: quartz sand, rice straw carbon powder, molding sand binder, and water; its mass ratio is: quartz sand: rice straw carbon powder: molding sand binder: water = 100: (1~3): (7~9): (3~5). This invention utilizes the multi-level porous structure of the carbon powder obtained from the carbonization of waste rice straw, providing channels for gas discharge during the casting process, preventing gas from being entrained in the molten metal and forming pores, thus reducing the porosity defect rate of the casting. This invention uses carbon powder obtained from the carbonization of waste rice straw to replace coal powder / wood chips, reducing the cost of molding sand raw materials, while simultaneously solving the problem of agricultural waste disposal, achieving "waste treatment with waste."

The present application relates to the technical field of metal casting, and discloses a cooling clean room for mold casting, which comprises a clean room bin, a conveying treatment mechanism, a cooling and sand dropping structure, a sand collecting and purifying structure, a temperature control main body, a dust suction main body, a filter and an exhaust fan. The clean room bin is provided with an inlet door and an outlet door on both sides, and the conveying treatment mechanism is arranged inside to continuously convey the casting mold; the cooling and sand dropping structure drives the cover to lift up and down through a supporting assembly to be close to the mold, and uses a fan to introduce cooling air flow and a sand knocking assembly to shake off the sand; the sand collecting and purifying structure collects and guides the dropped sand through a bottom cover, a drawer filter screen and two inclined blocks, and sends the dust-containing gas to the filter through a one-way valve and a connecting pipe; the exhaust fan exhausts the exhaust gas in the clean room bin after purification. The present application realizes the automatic integrated operation of cooling, sand dropping and dust purification, significantly improves the processing efficiency and cleanliness, and effectively improves the working environment.

The invention discloses a flow guide pipe building and pouring method for steel ingot pouring, and belongs to the field of steel ingot preparation. The flow guide pipe building and pouring method comprises the steps that a plurality of flow guide pipe bricks are piled up to form an annular combined body; the annular assembly is moved into the flow guide pipe barrel, and a gap is formed; filling molding sand into the gap and curing; molten steel meeting the requirements is prepared; the molten steel is pretreated; molten steel pouring is conducted through the flow guide pipe; standing to solidify the molten steel into steel ingots, and monitoring overflow; and detecting the quality of the steel ingot. According to the method, additional treatment steps for gaps and shaking in a traditional process can be simplified, the continuous pouring requirement is met, and the effects of improving the continuity of the pouring process and the production efficiency and guaranteeing the quality stability of steel ingot products are achieved.

This invention provides a sand molding device for stainless steel casting production, relating to the field of sand molding technology. It includes a device base, a lower molding box above the base, an ejector mechanism (a retractable sleeve structure) above the base, a vibration generator above the base, a sand mold above the base, and two release agent spraying devices above the base, located on the upper and lower sides of the sand mold respectively. In this invention, the lower molding box, ejector mechanism (a retractable sleeve structure with internal springs), vibration generator (capable of generating vibrations via ultrasound), sand mold, and two release agent spraying devices located on the upper and lower sides of the sand mold, each with a set of spray nozzles arranged in a straight line, allow for efficient operation during the sand molding process.