A sand recovery device

Abstract

The present invention belongs to the technical field of molding sand recovery, and specifically is a molding sand recovery device, comprising: a box body; a cleaning bin, which is fixedly connected to one end of the box body and has two roller brushes connected thereto for rotation; a second motor is turned on through cooperation between an electromagnetic rod and a stirring rod, and a rotating rod is driven to rotate through the second motor, and a first bevel gear and a stirring rod are driven to rotate through the rotating rod, wherein when the first bevel gear rotates, a third bevel gear is driven to rotate, and the second bevel gear is driven to rotate through the third bevel gear, and since the first bevel gear and the second bevel gear are symmetrically arranged, the second bevel gear rotates in opposite directions, and a rotating block and the electromagnetic rod are driven to rotate in opposite directions through the second bevel gear, and on the one hand, the electromagnetic rod cooperates with the stirring rod to rotate in opposite directions to promote dispersion of sand material, prevent agglomeration, and affect iron removal; on the other hand, the electromagnetic rod increases the contact area with the sand material and iron filings, increases the amount of iron filings adsorbed, and realizes the function of efficient iron removal.

Description

Technical Field

[0001] The invention belongs to the technical field of molding sand recovery, in particular to a molding sand recovery device. Background Art

[0002] Molding sand is a material used for shaping in casting. Molding sand is generally made of raw sand for casting, molding sand binder, additives and other molding materials mixed in a certain proportion. Molding sand can be divided into clay sand, water glass sand, cement sand, resin sand, etc. according to the different binders used. Sand casting refers to shaping the sand in a sand box to form a cavity of fixed shape inside it, and then pouring the molten metal into the cavity, and waiting for it to cool to form a workpiece corresponding to the shape of the cavity. After the workpiece is formed, the sand can be directly destroyed to take out the workpiece.

[0003] A Chinese patent with publication number CN117718433B discloses an automatic cleaning and recovery device for precision casting sand, including a longitudinal lifting drive mechanism, a bidirectional flexible lifting and unloading mechanism, a reciprocating baffle mechanism and an ultrasonic sand removal mechanism, wherein the ultrasonic sand removal mechanism includes an external box, a sand removal box and an ultrasonic generator, and the sand removal box is arranged in the external box; through the rotation of the outer shell of the driven assembly, the entire transmission belt and the flexible T-shaped track attached to the transmission belt can be driven to roll and transmit, so that the bidirectional flexible lifting and unloading mechanism can be circulated, and the lifting and dumping of materials can be achieved during the cyclic movement; the hopper locking assembly can temporarily lock the trapezoidal hopper assembly in stages, and only when the next set of trapezoidal hopper assemblies are close to the trapezoidal hopper assembly currently used for collecting materials, the current trapezoidal hopper assembly will be released and raised, so that when the trapezoidal hopper assemblies are intermittently arranged, the continuity of collecting materials can still be achieved, and the sand in the sand removal box is prevented from entering the external box.

[0004] In the above technology, the molding sand on the surface of the workpiece can be removed by ultrasonic sand removal. The dust in the molding sand will remain in the water and be separated from the molding sand. However, the molding sand contains some iron filings and slag. The iron filings and slag are both solid and cannot be directly separated in water. If the iron filings and slag in the molding sand are not processed, the recovery effect of the molding sand will be poor. If it is used directly in the next casting, the molding sand will not be fine enough, the surface of the cast workpiece will be granular and not smooth, and the quality will be poor.

[0005] To this end, the present invention provides a molding sand recovery device. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve the technical problem is: a molding sand recovery device described in the present invention comprises:

[0008] Box;

[0009] The cleaning chamber is fixed to one end of the box body and has two roller brushes rotatably connected inside;

[0010] The conveyor belt is arranged at the other end of the box body, and fixed ring plates are respectively arranged on both sides;

[0011] Screening box, used to screen molding sand of different diameters;

[0012] The inner cylinder is connected and fixed to the top of the screening box;

[0013] The iron removal mechanism is arranged inside the inner cylinder;

[0014] The iron removal mechanism includes a second motor fixedly connected to the top of the inner cylinder; the output shaft of the second motor is rotatably connected to the inner cylinder through a bearing; the output shaft of the second motor is fixedly connected to a rotating rod; the top of the rotating rod is fixedly connected to a first bevel gear; a second bevel gear is symmetrically arranged below the first bevel gear, and the second bevel gear is rotatably connected to the rotating rod through a rotating block; a vertical plate is fixedly connected to the top of the inner cylinder; a connecting rod is rotatably connected to the vertical plate through a rotating shaft; one end of the connecting rod is fixedly connected to a third bevel gear, and the two ends of the third bevel gear are respectively meshed with the first bevel gear and the second bevel gear; a plurality of stirring rods are fixedly connected to the outer wall of the rotating rod; two electromagnetic rods are symmetrically fixedly connected to the outer wall of the rotating block; a scraper rod is fixedly connected to the bottom of the rotating rod.

[0015] Preferably, a second circular plate is fixedly connected to the bottom of the inner cylinder; a first circular plate is arranged on the top of the second circular plate; the first circular plate is rotatably connected to the inner cylinder through a bearing; four through holes are arranged circumferentially on the first circular plate; four ventilation plates are hollowed out and fixedly connected to the second circular plate, and the ventilation plates are respectively matched with the through holes; four protective boxes are fixedly connected to the bottom of the second circular plate; blowers are installed in the protective boxes; the protective boxes are respectively matched with the ventilation plates, and the four ventilation plates are circumferentially arranged on the second circular plate; the scraper rod is in contact with the top of the first circular plate.

[0016] Preferably, the middle part of the first circular plate is connected and fixedly connected with a drop hopper; the drop hopper is rotatably connected to the second circular plate through a bearing; the bottom end of the drop hopper is fixedly connected to a first rotating wheel; the inner side wall of the screening box is fixedly connected to a mounting plate; the top of the mounting plate is fixedly connected to a third motor; the output shaft of the third motor is rotatably connected to the mounting plate and extends to the bottom of the mounting plate where a second rotating wheel is fixedly connected; a belt is sleeved between the first rotating wheel and the second rotating wheel; and an electromagnetic valve is installed on the outer side wall of the bottom end of the drop hopper.

[0017] Preferably, the inner wall of the cleaning bin is rotatably connected to two roller brushes via a roller shaft; one end of each roller brush extends to the outside of the cleaning bin and is fixedly connected to a first gear; the two first gears are meshed with each other; a first motor is fixedly connected to the outer wall of the box body, and the output shaft of the first motor passes through the box body and is fixedly connected to one end of the roller shaft of the roller brush.

[0018] Preferably, the top of the box body is fixedly connected to a side panel, and both ends of the top of the side panel are fixedly connected to a connecting plate; a water outlet box is rotatably connected between the connecting plates via a rotating shaft; three nozzles are fixedly connected to the bottom of the water outlet box; a water inlet pipe is passed through one end of the water outlet box; the water inlet pipe is rotatably connected to the connecting plate; a second gear is fixedly connected to the outer side of the water inlet pipe; an electric push rod is fixedly connected to the connecting plate; a rack is fixedly connected to the output end of the electric push rod, and the gear is meshed with the rack; a limit block is fixedly connected to one end of the rack close to the connecting plate; the limit block is slidably connected to the connecting plate.

[0019] Preferably, two fixed ring plates are fixedly connected to the box body; both ends of the fixed ring plates are rotatably connected to the rotating rollers through bearings; the conveyor belt is sleeved on the outer side of the rotating roller; a plurality of baffles are rotatably connected between the two fixed ring plates through a rotating shaft; the baffles are arranged in a ring on both sides of the conveyor belt; two slide grooves are symmetrically provided on the baffles; sliding columns are fixedly connected in the slide grooves; sliding columns are slidably connected to sliding blocks; the outer sides of the sliding columns are sleeved with a first spring; the two ends of the spring are respectively fixedly connected to the inner wall of the top of the slide groove and the top of the sliding block; the sliding block is rotatably connected to two rotating rods through a pin shaft; the bottoms of the two rotating rods are rotatably connected to fixed blocks through a pin shaft; the fixed blocks are fixed to the conveyor belt; the bottom of the box body is connected and fixed to a water outlet pipe.

[0020] Preferably, a cylinder body is provided on the outer side of the inner cylinder; a plurality of heating rods are fixedly connected between the inner cylinder and the outer cylinder; and a protective cover is fixedly connected between the box body and the cylinder body.

[0021] Preferably, two connecting blocks are fixedly connected to the inner side walls of the screening box respectively; the two connecting blocks close to the box body are higher than the other two connecting blocks; pillars are fixedly connected to the connecting blocks; screen plates are slidably connected to the four pillars; a second spring is sleeved on the outer side of the pillar, and the two ends of the second spring are respectively fixed between the screen plate and the connecting blocks; a discharge port is opened on the side of the screening box away from the box body; one end of the screen plate passes through the discharge port and slides in the discharge port; a collection box is provided on one side of the screening box; the collection box cooperates with the screen plate and the discharge port respectively; a vibrator is installed at the bottom of the screen plate.

[0022] Preferably, a drawer is slidably connected to the bottom of the screening box; the drawer is arranged directly below the screening plate.

[0023] Preferably, the top of the inner cylinder is connected and fixedly connected with a connecting pipe; the connecting pipe is externally connected to a fan.

[0024] The beneficial effects of the present invention are as follows:

[0025] 1. A molding sand recovery device described in the present invention cooperates with an electromagnetic rod and a stirring rod to start the second motor, and the second motor drives the rotating rod to rotate, and the rotating rod drives the first bevel gear and the stirring rod to rotate, wherein when the first bevel gear rotates, it drives the third bevel gear to rotate, and the second bevel gear is driven to rotate by the third bevel gear. Since the first bevel gear and the second bevel gear are symmetrically arranged, the second bevel gear rotates in the opposite direction, and the rotating block and the electromagnetic rod are driven to rotate in the opposite direction by the second bevel gear. On the one hand, the electromagnetic rod cooperates with the stirring rod to rotate in the opposite direction to promote the dispersion of sand material, prevent agglomeration, and affect iron removal; on the other hand, the electromagnetic rod increases the contact area with the sand material and iron filings, increases the amount of iron filings adsorbed, and realizes the function of efficient iron removal.

[0026] 2. The molding sand recovery equipment described in the present invention is transported upward through the conveyor belt by the cooperation of baffles, sliders and slide columns. During the transportation process, water seeps and flows down, and the baffle drives the sand upward, wherein the water seeps and flows down through the gap between the baffle and the conveyor belt. When the baffle moves to the top, it needs to rotate in a circle around the rotating roller. At this time, due to the gravity of the baffle and the sand, the baffle tilts downward, and the distance between the baffle and the conveyor belt changes. The rotating rod drives the slider to slide downward along the slide column, and the first spring is compressed. As the baffle continues to rotate, under the action of the first spring, the baffle shakes, which facilitates the sand to slide into the inner cylinder.

[0027] 3. The molding sand recovery equipment described in the present invention cooperates with the first circular plate and the second circular plate. When ventilation is needed, the blower and the third motor are turned on, and the second wheel is driven to rotate by the third motor, and the second wheel drives the belt to rotate, and the first wheel is driven to rotate by the belt, and the first wheel drives the drop hopper and the first circular plate to rotate, so that the through hole is aligned with the ventilation plate, and the wind is blown upward through the ventilation plate and the through hole by the blower, which can not only blow sand and iron filings upward, but also dry them, thereby reducing the adhesion of sand and iron filings, and facilitating iron removal; when unloading is needed, the first circular plate is rotated first to stagger the through hole and the ventilation plate, and the blower is turned off to unload. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] Figure 1 is a stereogram of the present invention;

[0030] Figure 2 is a cross-sectional view of the present invention;

[0031] Figure 3 It is a schematic structural diagram of the cross-section of the inner cylinder and the screening box in the present invention;

[0032] Figure 4 It is a schematic diagram of the structure of the stirring rod and the electromagnetic rod in the present invention;

[0033] Figure 5 It is a schematic diagram of the structure of the first rotating wheel and the second rotating wheel in the present invention;

[0034] Figure 6 It is an exploded view of the first circular plate, the second circular plate and the drop hopper in the present invention;

[0035] Figure 7 It is a structural schematic diagram of the conveyor belt in the present invention;

[0036] Figure 8 It is a structural schematic diagram of the baffle in the present invention;

[0037] Fig. 9 It is a schematic diagram of the structure of the cleaning brush of the present invention;

[0038] Fig.10 It is a structural schematic diagram of the nozzle in the present invention;

[0039] Fig.11 It is a structural schematic diagram of the sieve plate in the present invention;

[0040] In the figure: 1, box body; 11, water outlet pipe; 12, fixed ring plate; 13, conveyor belt; 14, baffle; 15, slide; 16, slide column; 17, first spring; 18, slider; 19, fixed block; 110, rotating rod; 111, protective cover; 2, cleaning chamber; 21, roller brush; 22, first motor; 23, first gear; 3, cylinder; 31, inner cylinder; 311, heating rod; 32, second motor; 321, rotating rod; 322, first bevel gear; 323, second bevel gear; 324, stirring rod; 325, third bevel gear; 326, vertical plate; 327, electromagnetic rod; 328, scraper rod; 329, connecting rod; 33, Connecting pipe; 34, first circular plate; 341, drop hopper; 342, second circular plate; 343, protection box; 344, blower; 345, ventilation plate; 346, through hole; 347, solenoid valve; 35, first rotor; 351, second rotor; 352, mounting plate; 353, third motor; 354, belt; 4, screening box; 41, screening plate; 42, support; 43, second spring; 44, connecting block; 45, discharge port; 46, collecting box; 47, drawer; 5, side panel; 51, connecting plate; 52, water outlet box; 53, nozzle; 54, electric push rod; 55, rack; 56, limit block; 57, second gear; 58, water inlet pipe. DETAILED DESCRIPTION

[0041] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0042] like Figures 1 to 11 As shown, a molding sand recovery device described in an embodiment of the present invention includes: a box body 1; a cleaning bin 2, which is fixedly connected to one end of the box body 1 and has two roller brushes 21 rotatably connected inside; a conveyor belt 13, which is arranged at the other end of the box body 1 and has fixed ring plates 12 on both sides; a screening box 4, which is used to screen molding sand of different diameters; an inner cylinder 31, which is connected and fixed to the top of the screening box 4; an iron removal mechanism, which is arranged inside the inner cylinder 31; the iron removal mechanism includes a second motor 32 fixedly connected to the top of the inner cylinder 31; the output shaft of the second motor 32 is rotatably connected to the inner cylinder 31 through a bearing; the output shaft of the second motor 32 is fixedly connected to a rotating rod 321; the top of the rotating rod 321 is fixedly connected to a first bevel gear 322; a second bevel gear 323 is symmetrically arranged below the first bevel gear 322, and the second bevel gear 323 is rotatably connected to the rotating rod 321 through a rotating block; a vertical plate 326 is fixedly connected to the top of the inner cylinder 31; a connecting rod 329 is rotatably connected to the vertical plate 326 through a rotating shaft; a third bevel gear 325 is fixedly connected to one end of the connecting rod 329, and the two ends of the third bevel gear 325 are respectively meshed with the first bevel gear 322 and the second bevel gear 323; a plurality of stirring rods 324 are fixedly connected to the outer wall of the rotating rod 321; two electromagnetic rods 327 are symmetrically fixedly connected to the outer wall of the rotating block; a scraper rod 328 is fixedly connected to the bottom of the rotating rod 321.

[0043] In the prior art, the molding sand on the surface of the workpiece can be removed by ultrasonic sand removal, but the molding sand contains some iron chips and slag, which are both solid and cannot be directly separated in water. If the iron chips and slag in the molding sand are not processed, the recycling effect of the molding sand will be poor. If it is directly used in the next casting, the molding sand will not be fine enough.

[0044] When the iron removal mechanism provided by the present invention is used, the workpiece taken out from the sand material is first placed in the cleaning bin 2, and is cleaned by spraying and the roller brush 21. The washed sand material and iron filings flow on the conveyor belt 13 with the water flow, and are transported upward through the conveyor belt 13. During the transportation process, water infiltrates and flows down, and the sand material and iron filings are driven by the conveyor belt 13 and fall slowly and orderly into the inner cylinder 31; the blower 344 and the heating rod 311 are turned on in advance, and due to the effect of the blower 344 lifting the material upward, power is generated by compressed air, and the power generates a strong The large airflow increases the air flow. The wind pressure and air volume generated by the blower 344 can suspend the sand materials that fall in an orderly manner, so that they do not contact the bottom of the inner tube 31, and keep the molding sand inside the inner tube 31; the heating rod 311 generates heat for drying; at the same time, the second motor 32 is turned on, and the rotating rod 321 is driven to rotate by the second motor 32, and the first bevel gear 322 and the stirring rod 324 are driven to rotate by the rotating rod 321, wherein when the first bevel gear 322 rotates, the third bevel gear 325 is driven to rotate, and the third bevel gear 326 is driven to rotate by the third bevel gear 327. The gear 325 drives the second bevel gear 323 to rotate. Since the first bevel gear 322 and the second bevel gear 323 are symmetrically arranged, the second bevel gear 323 rotates in the opposite direction. The second bevel gear 323 drives the rotating block and the electromagnetic rod 327 to rotate in the opposite direction. On the one hand, the electromagnetic rod 327 cooperates with the stirring rod 324 to rotate in the opposite direction to promote the dispersion of the sand material, prevent agglomeration, and affect the iron removal. In addition, under the obstruction of the electromagnetic rod 327 and the stirring rod 324, the falling speed of the sand material is slowed down, and the drying and iron removal are fully carried out. On the other hand, the electromagnetic rod 327 increases the contact area with the sand and iron filings, increases the amount of iron filings adsorbed, and realizes the function of efficient iron removal; usually the pressure range of the blower is set at 100-150Kpa to ensure the wind pressure and air volume generated by the blower 344, regularly shut down the conveying of the conveyor belt 13, block the ventilation plate 345, and then close the blower 344 to complete one material unloading, prevent too much sand, and the blower 344 cannot lift the material upward, causing the ventilation plate 345 to be blocked by sand, which not only reduces the work efficiency, but also easily damages the blower 344.

[0045] like Figure 2 , Figure 3 , Figure 5 and Figure 6As shown, a second circular plate 342 is fixedly connected to the bottom of the inner cylinder 31; a first circular plate 34 is provided on the top of the second circular plate 342; the first circular plate 34 is rotatably connected to the inner cylinder 31 through a bearing; four through holes 346 are arranged circumferentially on the first circular plate 34; four ventilation plates 345 are hollowed and fixedly connected to the second circular plate 342, and the ventilation plates 345 are respectively matched with the through holes 346; four protective boxes 343 are fixedly connected to the bottom of the second circular plate 342; blowers 344 are installed in the protective boxes 343; the protective boxes 343 are respectively matched with the ventilation plates 345, and the four ventilation plates 345 are arranged circumferentially on the second circular plate 342; the scraper rod 328 is in contact with the top of the first circular plate 34.

[0046] Sand materials tend to clump when piled together. In order to improve the iron removal effect, the sand materials need to be dispersed. When the first circular plate 34 and the second circular plate 342 provided by the present invention are in use and ventilation is required, the blower 344 is turned on, and the first circular plate 34 is rotated to align the through hole 346 with the ventilation plate 345. The blower 344 blows the wind upward through the ventilation plate 345 and the through hole 346, which can not only blow the sand materials and iron filings upward, but also dry them, thereby reducing the adhesion of the sand materials and the iron filings, which is convenient for iron removal. When unloading is required, the first circular plate 34 is first rotated to stagger the through hole 346 with the ventilation plate 345, and the blower 344 is turned off to unload.

[0047] like Figure 5 and Figure 6 As shown, the middle part of the first circular plate 34 is connected and fixedly connected with a drop hopper 341; the drop hopper 341 is rotatably connected to the second circular plate 342 through a bearing; the bottom end of the drop hopper 341 is fixedly connected to a first rotating wheel 35; the inner side wall of the screening box 4 is fixedly connected to a mounting plate 352; the top of the mounting plate 352 is fixedly connected to a third motor 353; the output shaft of the third motor 353 is rotatably connected to the mounting plate 352 and extends to the bottom of the mounting plate 352 where a second rotating wheel 351 is fixedly connected; a belt 354 is sleeved between the first rotating wheel 35 and the second rotating wheel 351; and an electromagnetic valve 347 is installed on the outer side wall of the bottom end of the drop hopper 341.

[0048] The first rotating wheel 35 and the second rotating wheel 351 provided by the present invention are used to drive the first circular plate 34 to rotate when in use. By turning on the third motor 353, the second rotating wheel 351 is driven to rotate by the third motor 353, the second rotating wheel 351 drives the belt 354 to rotate, and the first rotating wheel 35 is driven to rotate by the belt 354. The first rotating wheel 35 drives the dropping hopper 341 and the first circular plate 34 to rotate, thereby realizing the function of driving the first circular plate 34 to rotate. After iron removal, the solenoid valve 347 is opened to unload the sand material.

[0049] like Figure 2 and Fig. 9 As shown, the inner wall of the cleaning chamber 2 is rotatably connected to two roller brushes 21 through a roller shaft; one end of each roller brush 21 extends to the outside of the cleaning chamber 2 and is fixedly connected to a first gear 23; the two first gears 23 are meshed with each other; the outer wall of the box body 1 is fixedly connected to a first motor 22, and the output shaft of the first motor 22 passes through the box body 1 and is fixedly connected to one end of the roller shaft of the roller brush 21.

[0050] When the roller brush 21 provided by the present invention is in use, the workpiece in the sand is taken out and placed on the roller brush 21. By turning on the first motor 22, the first motor 22 drives the connected roller shaft to rotate, and the roller shaft drives the connected roller brush 21 and the first gear 23 to rotate. The first gear 23 drives another first gear 23 to rotate, and the first gear 23 drives the connected roller shaft and roller brush 21 to rotate, so that the two roller brushes 21 rotate in opposite directions and synchronously, and the sand on the workpiece is brushed off.

[0051] like Figure 1 and Fig.10 As shown, a side panel 5 is fixedly connected to the top of the box body 1, and connecting plates 51 are fixedly connected to both ends of the top of the side panel 5; a water outlet box 52 is rotatably connected between the connecting plates 51 through a rotating shaft; three nozzles 53 are fixedly connected to the bottom of the water outlet box 52; a water inlet pipe 58 is passed through one end of the water outlet box 52; the water inlet pipe 58 is rotatably connected to the connecting plate 51; a second gear 57 is fixedly connected to the outer side of the water inlet pipe 58; an electric push rod 54 is fixedly connected to the connecting plate 51; a rack 55 is fixedly connected to the output end of the electric push rod 54, and the gear is meshed with the rack 55; a limit block 56 is fixedly connected to one end of the rack 55 close to the connecting plate 51; the limit block 56 is slidably connected to the connecting plate 51.

[0052] When the second gear 57 and the rack 55 provided by the present invention are in use, the roller brush 21 needs to spray when cleaning sand materials. Water is supplied to the water outlet box 52 through the water inlet pipe 58, and the water in the water outlet box 52 is sprayed to the workpiece through the nozzle 53, and the roller brush 21 is used to scrub the workpiece. At the same time, the electric push rod 54 is turned on, and the electric push rod 54 pushes the rack 55 through the output end, and the rack 55 drives the second gear 57 to rotate, and the water inlet pipe 58, the water outlet box 52 and the nozzle 53 are driven to rotate through the second gear 57, so as to expand the spraying area and improve the efficiency of spraying.

[0053] like Figure 2 , Figure 7 and Figure 8As shown, two fixed ring plates 12 are fixedly connected in the box body 1; both ends of the fixed ring plates 12 are rotatably connected with rotating rollers through bearings; the conveyor belt 13 is sleeved on the outer side of the rotating roller; a plurality of baffles 14 are rotatably connected between the two fixed ring plates 12 through a rotating shaft; the baffles 14 are annularly arranged on both sides of the conveyor belt 13; two slide grooves 15 are symmetrically provided on the baffles 14; slide columns 16 are fixedly connected in the slide grooves 15; sliders 18 are slidably connected to the slide columns 16; first springs 17 are sleeved on the outer sides of the slide columns 16; both ends of the springs are respectively fixed to the inner wall of the top of the slide groove 15 and the top of the slider 18; two rotating rods 110 are rotatably connected to the slider 18 through a pin shaft; the bottoms of the two rotating rods 110 are rotatably connected to fixed blocks 19 through a pin shaft; the fixed blocks 19 are fixed to the conveyor belt 13; the bottom of the box body 1 is connected and fixed with a water outlet pipe 11.

[0054] During the process of conveying sand material by the conveyor belt 13, the sand material is wet and it is inconvenient to fall. When the slider 18 and the slide column 16 provided by the present invention are in use, the baffle 14 drives the sand material upward when the conveyor belt 13 is conveying, wherein water penetrates and flows down through the gap between the baffle 14 and the conveyor belt 13. When the baffle 14 moves to the top, it needs to rotate in a circle around the rotating roller. At this time, due to the gravity of the baffle 14 and the sand material, the baffle 14 tilts downward, and the distance between the baffle 14 and the conveyor belt 13 changes. The rotating rod 110 drives the slider 18 to slide downward along the slide column 16, and the first spring 17 is compressed. As the baffle 14 continues to rotate, under the action of the first spring 17, the baffle 14 shakes, which facilitates the sand material to slide into the inner cylinder 31.

[0055] like Figure 2 and Figure 3 As shown, a cylinder body 3 is provided on the outer side of the inner cylinder 31 ; a plurality of heating rods 311 are fixedly connected between the inner cylinder 31 and the outer cylinder; and a protective cover 111 is fixedly connected between the box body 1 and the cylinder body 3 .

[0056] When the heating rod 311 provided by the present invention is in use, the sand material is heated by the heating rod 311 to be quickly dried and easy to disperse; the cylinder 3 and the box body 1 are sealed by the protective cover 111 to reduce heat loss.

[0057] like Figures 2 to 11As shown, two connecting blocks 44 are fixedly connected to the inner wall of the screening box 4 respectively; the two connecting blocks 44 close to the box body 1 are higher than the other two connecting blocks 44; pillars 42 are fixedly connected to the connecting blocks 44; the four pillars 42 are slidably connected to the screen plates 41; the outer side of the pillars 42 is sleeved with a second spring 43, and the two ends of the second spring 43 are respectively fixed between the screen plate 41 and the connecting blocks 44; a discharge port 45 is opened on the side of the screening box 4 away from the box body 1; one end of the screen plate 41 passes through the discharge port 45 and slides in the discharge port 45; a collection box 46 is provided on one side of the screening box 4; the collection box 46 cooperates with the screen plate 41 and the discharge port 45 respectively; a vibrator is installed at the bottom of the screen plate 41.

[0058] When the sieve plate 41 provided by the present invention is in use, the sand material after iron removal falls onto the sieve plate 41, and the sieve plate 41 is pressed by the gravity of the sand material. The vibrator provides an external continuous vibration source to keep the sieve plate 41 shaking, so the sieve plate 41 shakes up and down through the second spring 43 and the support 42. When the sieve plate 41 shakes, small-particle sand material passes through the sieve plate 41 and falls into the drawer 47, and large-particle sand material passes through the discharge port 45 and falls into the collection box 46, thereby realizing the function of sand material screening.

[0059] like Figure 1 and Figure 2 As shown, a drawer 47 is slidably connected to the bottom of the screening box 4; the drawer 47 is arranged directly below the screening plate 41.

[0060] When the drawer 47 provided by the present invention is in use, small particles of sand material pass through the screen plate 41 and fall into the drawer 47, and the small particles of sand material are recovered.

[0061] like Figure 1 and Figure 2 As shown, the top of the inner tube 31 is connected and fixedly connected with a connecting pipe 33; the connecting pipe 33 is externally connected to a fan.

[0062] When the connecting pipe 33 provided by the present invention is used, the other sand materials during the casting of the workpiece are conveyed into the inner tube 31 of the conveyor through the connecting pipe 33 through an external fan, and iron is removed and then screened, thereby improving the utilization rate of the recovery equipment.

[0063] Working principle: First, the workpiece taken out of the sand material is placed in the cleaning chamber 2 and placed on the roller brush 21. By turning on the first motor 22, the first motor 22 drives the connected roller shaft to rotate, and the roller shaft drives the connected roller brush 21 and the first gear 23 to rotate. The first gear 23 drives another first gear 23 to rotate, and the first gear 23 drives the connected roller shaft and roller brush 21 to rotate, so that the two roller brushes 21 rotate synchronously in opposite directions to brush the sand material on the workpiece; when cleaning the sand material, the roller brush 21 needs to Spraying is performed, water is fed into the water outlet box 52 through the water inlet pipe 58, and the water in the water outlet box 52 is sprayed toward the workpiece through the nozzle 53, and the workpiece is scrubbed with the roller brush 21; at the same time, the electric push rod 54 is turned on, and the electric push rod 54 pushes the rack 55 through the output end, and the rack 55 drives the second gear 57 to rotate, and the water inlet pipe 58, the water outlet box 52 and the nozzle 53 are driven to rotate through the second gear 57, so as to expand the spraying area and improve the spraying efficiency; the sand and iron filings washed down are washed onto the conveyor belt 13 with the water flow;

[0064] The sand is transported upwards through the conveyor belt 13. During the transportation process, water infiltrates and flows down. The baffle 14 drives the sand upwards. The water infiltrates and flows down through the gap between the baffle 14 and the conveyor belt 13. When the baffle 14 moves to the top, it needs to rotate in a circle around the rotating roller. At this time, due to the gravity of the baffle 14 and the sand, the baffle 14 tilts downward, and the distance between the baffle 14 and the conveyor belt 13 changes. The rotating rod 110 drives the slider 18 to slide downward along the slide column 16, and the first spring 17 is compressed. As the baffle 14 continues to rotate, under the action of the first spring 17, the baffle 14 shakes, which facilitates the sand to slide into the inner cylinder 31.

[0065] The sand and iron filings are transported into the inner cylinder 31, and the blower 344 and the heating rod 311 are turned on. The blower 344 is turned on, and the through hole 346 is aligned with the ventilation plate 345 by rotating the first circular plate 34. The wind is blown upward through the ventilation plate 345 and the through hole 346 by the blower 344, which can not only blow the sand and iron filings upward, but also dry them, thereby reducing the sand and iron filings from sticking together. The sand is heated by the heating rod 311, and is quickly dried for easy dispersion; the cylinder 3 and the box 1 are sealed by the protective cover 111 to reduce heat loss;

[0066] The sand and iron filings are blown upward and heated and dried; at this time, the second motor 32 is turned on, and the rotating rod 321 is driven to rotate by the second motor 32, and the first bevel gear 322 and the stirring rod 324 are driven to rotate by the rotating rod 321. When the first bevel gear 322 rotates, the third bevel gear 325 is driven to rotate, and the second bevel gear 323 is driven to rotate by the third bevel gear 325. Since the first bevel gear 322 and the second bevel gear 323 are symmetrically arranged, the second bevel gear 323 rotates in the opposite direction, and the rotating block and the electromagnetic rod 327 are driven to rotate in the opposite direction by the second bevel gear 323. On the one hand, the electromagnetic rod 327 cooperates with the stirring rod 324 to rotate in the opposite direction to promote the dispersion of the sand and prevent agglomeration, which affects the iron removal; on the other hand, the electromagnetic rod 327 increases the contact area with the sand and iron filings, increases the amount of iron filings adsorbed, and realizes the function of efficient iron removal;

[0067] After iron removal, the sand material falls onto the sieve plate 41. Under the action of the gravity of the sand material, the sieve plate 41 is pressed, and the sieve plate 41 shakes up and down through the second spring 43 and the support 42. When the sieve plate 41 shakes, small particles of sand material pass through the sieve plate 41 and fall into the drawer 47, and large particles of sand material pass through the discharge port 45 and fall into the collecting box 46, thereby realizing the function of sand material screening.

[0068] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A molding sand recovery device, comprising: Box (1); A cleaning chamber (2) is fixedly connected to one end of the box body (1) and has two roller brushes (21) rotatably connected thereto; A conveyor belt (13) is arranged at the other end of the box body (1), and fixed ring plates (12) are respectively provided on both sides; A screening box (4) for screening molding sand of different diameters; The inner cylinder (31) is connected to and fixedly connected to the top of the screening box (4); An iron removal mechanism is arranged inside the inner cylinder (31); The invention is characterized in that: the iron removal mechanism comprises a second motor (32) fixedly connected to the top of the inner cylinder (31); the output shaft of the second motor (32) is rotatably connected to the inner cylinder (31) through a bearing; the output shaft of the second motor (32) is fixedly connected to a rotating rod (321); the top of the rotating rod (321) is fixedly connected to a first bevel gear (322); a second bevel gear (323) is symmetrically arranged below the first bevel gear (322), and the second bevel gear (323) is rotatably connected to the rotating rod (321) through a rotating block; the inner cylinder (31) A vertical plate (326) is fixedly connected inside the top; a connecting rod (329) is rotatably connected to the vertical plate (326) via a rotating shaft; a third bevel gear (325) is fixedly connected to one end of the connecting rod (329), and two ends of the third bevel gear (325) are respectively meshed with the first bevel gear (322) and the second bevel gear (323); a plurality of stirring rods (324) are fixedly connected to the outer wall of the rotating rod (321); two electromagnetic rods (327) are symmetrically fixedly connected to the outer wall of the rotating block; a scraper rod (328) is fixedly connected to the bottom of the rotating rod (321); A second circular plate (342) is fixedly connected to the bottom of the inner cylinder (31); a first circular plate (34) is provided on the top of the second circular plate (342); the first circular plate (34) is rotatably connected to the inner cylinder (31) via a bearing; four through holes (346) are arranged circumferentially on the first circular plate (34); four ventilation plates (345) are hollowed out and fixedly connected to the second circular plate (342), and the ventilation plates (345) are respectively matched with the through holes (346); four protection boxes (343) are fixedly connected to the bottom of the second circular plate (342); blowers (344) are installed in the protection boxes (343); the protection boxes (343) are respectively matched with the ventilation plates (345), and the four ventilation plates (345) are arranged circumferentially on the second circular plate (342); the scraper rod (328) is in contact with the top of the first circular plate (34); The middle part of the first circular plate (34) is connected and fixedly connected with a material drop hopper (341); the material drop hopper (341) is rotatably connected to the second circular plate (342) via a bearing; the bottom end of the material drop hopper (341) is fixedly connected with a first rotating wheel (35); the inner side wall of the screening box (4) is fixedly connected with a mounting plate (352); the top of the mounting plate (352) is fixedly connected with a third motor (353); the output shaft of the third motor (353) is rotatably connected to the mounting plate (352) and extends to the bottom of the mounting plate (352) where a second rotating wheel (351) is fixedly connected; a belt (354) is sleeved between the first rotating wheel (35) and the second rotating wheel (351); an electromagnetic valve (347) is installed on the outer side wall of the bottom end of the material drop hopper (341); Two fixed ring plates (12) are fixedly connected in the box body (1); both ends of the fixed ring plates (12) are rotatably connected to rotating rollers through bearings; the conveyor belt (13) is sleeved on the outer side of the rotating roller; a plurality of baffles (14) are rotatably connected between the two fixed ring plates (12) through a rotating shaft; the baffles (14) are arranged in a ring on both sides of the conveyor belt (13); two slide grooves (15) are symmetrically provided on the baffle plates (14); slide columns (16) are fixedly connected in the slide grooves (15); and the slide columns (16) are A slider (18) is slidably connected; the outer side of the slide column (16) is sleeved with a first spring (17); the two ends of the spring are respectively fixed to the inner wall of the top of the slide groove (15) and the top of the slider (18); the slider (18) is rotatably connected to two rotating rods (110) via a pin shaft; the bottoms of the two rotating rods (110) are rotatably connected to a fixed block (19) via a pin shaft; the fixed blocks (19) are fixed to the conveyor belt (13); the bottom of the box body (1) is connected and fixed to a water outlet pipe (11).

2. A molding sand recovery device according to claim 1, characterized in that: The inner side wall of the cleaning chamber (2) is rotatably connected to two roller brushes (21) via a roller shaft; one end of each roller brush (21) extends to the outside of the cleaning chamber (2) and is fixedly connected to a first gear (23); the two first gears (23) are meshed with each other; the outer side wall of the box body (1) is fixedly connected to a first motor (22); the output shaft of the first motor (22) passes through the box body (1) and is fixedly connected to one end of the roller shaft of the roller brush (21).

3. A molding sand recovery device according to claim 2, characterized in that: The top of the box body (1) is fixedly connected to a side plate (5), and both ends of the top of the side plate (5) are fixedly connected to a connecting plate (51); a water outlet box (52) is rotatably connected between the connecting plates (51) via a rotating shaft; three nozzles (53) are fixedly connected to the bottom of the water outlet box (52); a water inlet pipe (58) is passed through and connected to one end of the water outlet box (52); the water inlet pipe (58) is rotatably connected to the connecting plate (51); a second gear (57) is fixedly connected to the outer side of the water inlet pipe (58); an electric push rod (54) is fixedly connected to the connecting plate (51); a rack (55) is fixedly connected to the output end of the electric push rod (54), and the gear is meshed with the rack (55); one end of the rack (55) close to the connecting plate (51) is fixedly connected to a limit block (56); the limit block (56) is slidably connected to the connecting plate (51).

4. A molding sand recovery device according to claim 3, characterized in that: A cylinder body (3) is provided on the outside of the inner cylinder (31); a plurality of heating rods (311) are fixedly connected between the inner cylinder (31) and the outer cylinder; and a protective cover (111) is fixedly connected between the box body (1) and the cylinder body (3).

5. A molding sand recovery device according to claim 4, characterized in that: Two connecting blocks (44) are fixedly connected to the inner side walls of the screening box (4); the two connecting blocks (44) close to the box body (1) are higher than the other two connecting blocks (44); pillars (42) are fixedly connected to the connecting blocks (44); a screen plate (41) is slidably connected to the four pillars (42); a second spring (43) is sleeved on the outer side of the pillar (42), and the two ends of the second spring (43) are respectively fixedly connected between the screen plate (41) and the connecting blocks (44); a discharge port (45) is opened on the side of the screening box (4) away from the box body (1); one end of the screen plate (41) passes through the discharge port (45) and slides in the discharge port (45); a collecting box (46) is provided on one side of the screening box (4); the collecting box (46) cooperates with the screen plate (41) and the discharge port (45) respectively; and a vibrator is installed at the bottom of the screen plate (41).

6. A molding sand recovery device according to claim 5, characterized in that: A drawer (47) is slidably connected to the bottom of the screening box (4); the drawer (47) is arranged directly below the screening plate (41).

7. A molding sand recovery device according to claim 6, characterized in that: The top of the inner cylinder (31) is connected and fixedly connected with a connecting pipe (33); the connecting pipe (33) is externally connected to a fan.

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