CN115672544A - Used sand metal recovery device - Google Patents

Abstract

The utility model relates to a used sand metal recovery unit, relate to the metal casting field, it includes cylinder and driving roll along self axis pivoted drive assembly, the cylinder below is equipped with the recovery pond, the one end intercommunication of recovery pond has the inlet tube, the other end intercommunication has the outlet pipe, a plurality of vertical guide plates have been laid along length direction equidistant in the recovery pond, the one end of guide plate and the pool wall fixed connection of recovery pond, leave the interval between the other end and the pool wall of recovery pond, two piece adjacent guide plates respectively with the pool wall fixed connection of recovery pond width direction both sides, all be equipped with the electro-magnet on the pool wall of guide plate and recovery pond. The molding sand that the cylinder fell mixes the dispersion and flows along with the rivers with water, and the electro-magnet circular telegram simultaneously produces magnetic force, and metal in the molding sand adsorbs to guide plate or recovery pond pool wall on, under the dispersion of water and the mobile effect, can carry out the magnetic absorption collection to the metal fast, has improved the rate of recovery of metal.

Description

Used sand metal recovery device

Technical Field

The application relates to the field of metal casting, in particular to a used sand metal recovery device.

Background

Casting is a common workpiece forming process at present, and part of metal fittings made of manganese steel, carbon steel and the like are formed by utilizing a casting process. The common casting method is that resin sand forms a sand mold, a cavity matched with a processed workpiece is formed in the sand mold, then molten liquid metal is poured into the cavity, the workpiece is cooled and formed, and finally the workpiece is separated from the sand mold, wherein part of granular and flaky metal exists in the separated sand mold, and the part of metal needs to be recovered in order to facilitate recycling of the resin sand and save cost.

The related art can refer to chinese patent with publication number CN115229168a and discloses a type sand metal recovery device, which includes: a roller shakeout machine for separating the workpiece from the molding sand; the bearing plate is positioned below the roller shakeout machine and used for bearing the molding sand falling from the roller shakeout machine; the stirring cylinder is positioned at one end of the bearing plate, the bearing plate is provided with a feeding mechanism for conveying the molding sand to the stirring cylinder, the stirring cylinder is rotationally connected with a stirring shaft, the stirring shaft is fixedly connected with a crushing paddle, the lower end part of the stirring cylinder is provided with a blanking port, and the lower end part of the stirring cylinder is movably connected with a baffle cover for sealing the blanking port; the conveying starting end of the conveying belt extends to the position below the blanking port; the electromagnetic plate is located the separator plate top, and the area face of conveyer belt has set firmly the scraper blade, and the scraper blade sets up along the width direction of electromagnetic plate, and when the scraper blade was located between conveyer belt and the electromagnetic plate, the scraper blade deviated from the one end and the electromagnetic plate butt of conveyer belt.

To the correlation technique among the above-mentioned, the sand volume that the cylinder shakeout machine fell is more, and above-mentioned molding sand metal reclamation device adsorbs the metal at the in-process that retrieves the metal with the electromagnetic plate, need pass through the molding sand thickness of electromagnetic plate below thinner just can have better recovery effect, just also leads to the efficiency of metal reclamation lower.

Disclosure of Invention

In order to improve the recovery efficiency of metal, this application provides a used sand metal recycling device.

The application provides a used sand metal recovery unit adopts following technical scheme:

the utility model provides a used sand metal recovery unit, includes cylinder and driving drum along self axis pivoted drive assembly, the cylinder below is equipped with the recovery pond, and the one end intercommunication in recovery pond has the inlet tube, and other end intercommunication has the outlet pipe, has laid a plurality of vertical guide plates along length direction equidistant in the recovery pond, the one end of guide plate and the pool wall fixed connection in recovery pond, leaves the interval between the other end and the pool wall in recovery pond, two piece adjacent guide plates respectively with the pool wall fixed connection of recovery pond width direction both sides, all be equipped with the electro-magnet on the pool wall in guide plate and recovery pond.

Through adopting above-mentioned technical scheme, fill under the cooperation of inlet tube and outlet pipe in the recovery pond and keep mobile water, under the water conservancy diversion effect of guide plate, water flows to the outlet pipe along the wave, the molding sand that the cylinder fell directly falls into in the recovery pond, mix the dispersion and flow along with the rivers with water, the electro-magnet circular telegram produces magnetic force simultaneously, metal adsorption in the molding sand is to guide plate or recovery pond pool wall on, under dispersion and the flow effect of water, can carry out the magnetic absorption collection to the metal fast, the rate of recovery of metal has been improved.

Optionally, the roller includes an inner cylinder and an outer cylinder which are coaxially and fixedly connected, a gap is left between the inner cylinder and the outer cylinder, a plurality of meshes are uniformly distributed on the inner cylinder, spiral plates are fixedly arranged on one sides of the inner cylinder and the outer cylinder close to the axis of the roller, a collecting cylinder is fixedly arranged at one end of the recovery pond close to the water inlet pipe, the collecting cylinder is coaxially and rotatably connected with the roller, and the gap is communicated with the inside of the collecting cylinder.

Through adopting above-mentioned technical scheme, the sand mould gets into and lies in the inner tube behind the cylinder, and the molding sand passes the mesh and falls into in the clearance, and the work piece then continues in the inner tube, and work piece and molding sand all move to the other end of cylinder under the effect of spiral plate, and last molding sand is concentrated in the surge drum, makes all molding sands all fall into the recovery pond from the one end that is close to the inlet tube to metal's recovery effect in the guarantee molding sand.

Optionally, the bottom of the recovery tank is rotatably connected with a plurality of spiral pushing blades, and the pushing direction of the spiral pushing blades is vertically upward.

Through adopting above-mentioned technical scheme, the molding sand sinks in aqueous more easily, and spiral propelling movement blade can upwards carry the molding sand that sinks again, and then guarantee molding sand and baffle or retrieve the abundant contact of different positions on the pond wall direction of height, and then guarantee electro-magnet is favorable to having higher recovery effect under higher recovery efficiency to the magnetism effect of metal.

Optionally, the intercommunication department of outlet pipe and recovery pond is equipped with first sand screen, and the one end that is close to the outlet pipe in the recovery pond is equipped with the sand discharging platform, and the upper end of sand discharging platform is personally submitted with the coaxial arc of cylinder, and a plurality of scraper blades have been laid along circumference to the cylinder, and the radial setting along the cylinder is all followed to the scraper blade, and the length of scraper blade equals the interval of cylinder and sand discharging platform.

Through adopting above-mentioned technical scheme, the back is inhaled by the magnetism to the metal, and the molding sand flows to outlet pipe department along with water to being detained in sand discharging platform department by first sand screen, along with the rotation of cylinder, the recovery pond is scraped out to the sand discharging bench's molding sand periodically to the scraper blade of the different positions of cylinder circumference, can run for a long time under the more condition of molding sand.

Optionally, the guide plate is fixed to the recovery tank wall and is set to be a fixed end, the guide plate is far away from a baffle fixed to the end of the fixed end, and the baffle is perpendicular to the guide plate.

Through adopting above-mentioned technical scheme, the metal is inhaled the back by baffle or recovery pond pool wall magnetism, still probably removes along with rivers, and the baffle can effectively prevent to break away from once more by the metal of magnetism to the baffle can make rivers take place the disorder, and then reinforcing metal is inhaled the possibility of magnetism, is favorable to improving the recovery effect.

Optionally, the end of the guide plate far away from the fixed end inclines towards the direction close to the water inlet pipe.

Through adopting above-mentioned technical scheme, the baffle that the slope set up can make the mobility of rivers inside higher, is favorable to improving the recovery effect.

Optionally, the bottom of the recovery pond is obliquely arranged, the height of one side of the recovery pond in the width direction is lower, the recovery port is formed in the lower side of the recovery pond, and the baffle cover is movably connected to the recovery port.

Through adopting above-mentioned technical scheme, retrieve the log raft in the pond after shining, the electro-magnet outage, the metal can drop to the bottom of the pool under the action of gravity to automatically move to the lower recovery mouth department of height, the user opens the fender lid and can collect simple structure convenient operation to the metal.

Optionally, retrieve a mouthful department intercommunication and have the fill of keeping in, be equipped with the second sand screen in the fill of keeping in, the inlet tube with keep in fill intercommunication, the one end intercommunication that the inlet tube was kept away from to the fill of keeping in has the delivery pipe.

By adopting the technical scheme, the blocking cover is opened at intervals to collect the metal, and the metal is manually transferred after a certain amount of metal is recovered; the delivery pipe can also wash the metal of retrieving in the fill of keeping in when keeping in the fill supplying water in to the inlet pipe, reduces the molding sand on metal surface and remains, can effectively use manpower sparingly.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the recovery pool is filled with water which keeps flowing under the matching of the water inlet pipe and the water outlet pipe, the water flows to the water outlet pipe along the wave shape under the guiding action of the guide plate, the molding sand falling from the roller directly falls into the recovery pool, is mixed and dispersed with the water and flows along with the water flow, meanwhile, the electromagnet is electrified to generate magnetic force, the metal in the molding sand is adsorbed to the guide plate or the pool wall of the recovery pool, and the metal can be quickly subjected to magnetic absorption and collection under the dispersing and flowing action of the water, so that the recovery rate of the metal is improved;

2. the molding sand is easy to sink in water, and the spiral pushing blade can convey the sinking molding sand upwards again, so that the molding sand is fully contacted with the baffle or different positions in the height direction of the pool wall of the recovery pool, the magnetic attraction effect of the electromagnet on metal is further ensured, and the recovery effect is higher under higher recovery efficiency;

3. the blocking cover is opened at intervals to collect the metal once, and the metal is transferred manually after a certain amount of metal is recovered; the delivery pipe can also wash the metal of retrieving in the fill of keeping in when keeping in the fill supplying water in to the inlet pipe, reduces the molding sand on metal surface and remains, can effectively use manpower sparingly.

Drawings

Fig. 1 is a schematic view of the entire structure of embodiment 1.

FIG. 2 is a schematic sectional view showing the structure of example 1.

FIG. 3 is a schematic view of the structure of a recovery tank in example 1.

Fig. 4 is a schematic partial cross-sectional view highlighting the position of the electromagnet.

FIG. 5 is a schematic sectional view showing the structure of the sand discharge table.

FIG. 6 is a schematic view of the structure of a recovery tank in example 2.

Description of reference numerals: 1. a drum; 11. an outer cylinder; 12. an inner barrel; 13. a spiral plate; 14. a gap; 15. a squeegee; 151. water filtering holes; 2. a drive assembly; 3. a recovery tank; 31. a water inlet pipe; 32. a water outlet pipe; 33. a helical pusher blade; 34. a recovery port; 35. a first sand screen; 36. a sand discharge table; 37. a blocking cover; 4. a baffle; 41. a fixed end; 42. a baffle plate; 5. an electromagnet; 6. a collection canister; 7. a vibration motor; 8. a temporary storage hopper; 81. a water supply pipe; 82. and a second sand screen.

Detailed Description

The present application is described in further detail below with reference to all of the figures.

The embodiment of the application discloses used sand metal recovery unit.

Example 1:

referring to fig. 1, a used sand metal recovery device comprises a shakeout machine and a recovery tank 3, wherein the shakeout machine comprises a roller 1 located above the recovery tank 3 and a driving assembly 2 for driving the roller 1 to rotate, and the driving assembly 2 is the same as the driving assembly 2 of the shakeout machine in the prior art, and the embodiment is not excessively described. Processing time in the sand mould gets into cylinder 1 from the one end of shakeout machine, along with cylinder 1's rotation, the sand mould is cracked, and the work piece is discharged from the other end of cylinder 1, and the molding sand falls to and carries out the recovery of metal in the recovery pond 3 of below.

Referring to fig. 1 and 2, the axis of the roller 1 is horizontally arranged, the roller 1 comprises an inner cylinder 12 and an outer cylinder 11 which are coaxially and fixedly connected, a sand mold is positioned inside the inner cylinder 12 after entering the roller 1, a spiral plate 13 is fixedly arranged on the inner wall of the inner cylinder 12, and under the action of the spiral plate 13, the sand mold falls down after moving to a certain height along with the roller 1, is gradually cracked to separate a workpiece from molding sand, and gradually moves towards the other end of the roller 1.

Referring to fig. 1 and 2, a gap 14 is left between the inner cylinder 12 and the outer cylinder 11, a plurality of meshes communicated with the gap 14 are uniformly distributed on the inner cylinder 12, after the sand mold is cracked, the molding sand falls into the gap 14 through the meshes, a spiral plate 13 is fixedly arranged on the inner wall of the outer cylinder 11, and the molding sand moves towards the other end of the roller 1 under the action of the spiral plate 13 on the outer cylinder 11.

Referring to fig. 1 and 2, a collecting cylinder 6 is installed at one end of the roller 1 far away from the sand mold entering position, the collecting cylinder 6 is rotatably connected with the roller 1, and the lower end part of the collecting cylinder is fixed on the recovery tank 3 and does not rotate along with the roller 1. The collecting cylinder 6 is communicated with the gap 14, the molding sand in the gap 14 is gathered to the collecting cylinder 6 under the action of the spiral plate 13 of the outer cylinder 11, the lower end part of the collecting cylinder 6 is communicated with one end of the recovery tank 3 in the length direction, and the molding sand gathered to the collecting cylinder 6 falls into the recovery tank 3 under the action of gravity.

Referring to fig. 1, the one end intercommunication that recovery pond 3 is close to collecting vessel 6 has inlet tube 31, the other end intercommunication has outlet pipe 32, under the operating condition, inlet tube 31 supplies water in to recovery pond 3, outlet pipe 32 is to 3 outer drainages in recovery pond, make the water in the recovery pond 3 keep flowing along length direction, the molding sand falls back in recovery pond 3, mix with mobile water, under the diluting effect of water, the molding sand of part adhesion is washed away, the metal and the molding sand separation of part mixture in the molding sand.

Referring to fig. 1, fig. 2 and fig. 3, molding sand and metal flow along with rivers, install a plurality of guide plates 4 in the recovery pond 3, the equal vertical setting of guide plate 4 and with the lateral wall mutually perpendicular of recovery pond 3, a plurality of guide plates 4 are arranged along the length direction of recovery pond 3, guide plate 4 becomes a plurality of wall with the space separation in the recovery pond 3, guide plate 4 length direction ' S one end is established to stiff end 41, stiff end 41 and recovery pond 3 ' S inner wall fixed connection, the stiff end 41 of two adjacent guide plates 4 is located the both sides of recovery pond 3 width direction respectively, guide plate 4 ' S length is less than the width of recovery pond 3, and then keep away from the wall intercommunication of self stiff end 41 with the one end of both sides at guide plate 4, rivers are under the blockking of guide plate 4, from the different wall of intercommunication department process step by step, it flows to the direction of outlet pipe 32 to be "S" shape.

Refer to fig. 2 and fig. 4, retrieve the equal cavity setting of lateral wall and the guide plate 4 of pond 3, and inside all installs electro-magnet 5, under the normal condition, electro-magnet 5 circular telegram produces magnetic force, when the molding sand flows along with the water, metal wherein removes to when retrieving 3 lateral walls of pond or the nearer position of guide plate 4, be inhaled by magnetism and retrieve 3 lateral walls of pond or guide plate 4 on, and the molding sand continues along with the water flow, and at the mobile in-process, wherein mixed metal is inhaled by magnetism gradually, wherein mixed metal is less and less, and then realize the separation of metal and molding sand.

Refer to fig. 2, retrieve 3 lateral walls in pond and the not same position of 4 vertical directions on guide plate and all can inhale the metal magnetism, the efficiency of retrieving is very fast, the bottom of the pool of retrieving pond 3 rotates and is connected with a plurality of spiral propelling movement blades 33, spiral propelling movement blades 33's the vertical upwards of propelling movement direction, because the action of gravity, at the in-process that the molding sand flows along with water, the molding sand can sink to the bottom, when the molding sand moves to spiral propelling movement blades 33 department, under spiral propelling movement blades 33's rotation, the molding sand is upwards promoted, improve the mobility of molding sand, and the molding sand is if there is the caking, when contact spiral propelling movement blades 33, also can be broken up, the probability that reinforcing metal was inhaled by the magnetism.

Referring to fig. 1 and 2, because the surface of guide plate 4 is the plane, the back is inhaled to the metal by guide plate 4 magnetism, under the impact of rivers, the metal can be followed to the direction that guide plate 4 kept away from stiff end 41 and removed, the one end fixed mounting that guide plate 4 kept away from stiff end 41 has baffle 42, the width of baffle 42 is greater than the thickness of guide plate 4, and with guide plate 4 mutually perpendicular, if the metal removes to baffle 42 department, alright be blocked by baffle 42, be difficult to continue to remove, the metal that is inhaled by magnetism is made not to sneak into rivers again under the impact of rivers easily, and then guarantee the effect of retrieving when improving recovery efficiency.

Referring to fig. 2 and 4, the one end that recovery pond 3 is close to outlet pipe 32 is equipped with sand discharging platform 36, and the molding sand removes to sand discharging platform 36 back, and most mixed metal is inhaled by magnetism, and the preparation of sand mould is carried out once more to this part molding sand recoverable, and the water in the recovery pond 3 is discharged from outlet pipe 32, and outlet pipe 32 is equipped with first sand screen 35 with the intercommunication department of recovery pond 3, and under the effect of first sand screen 35, the molding sand is held back in sand discharging platform 36 department, and this part molding sand needs in time to discharge.

Referring to fig. 1 and 5, the upper end surface of the sand discharge table 36 is in an arc shape coaxial with the roller 1, three scrapers 15 are fixedly installed on the outer wall of the roller 1 along the circumferential direction, the scrapers 15 are all arranged along the radial direction of the roller 1, the three scrapers 15 synchronously rotate along with the roller 1 and periodically move one by one above the sand discharge table 36, the length of each scraper 15 is the same as the distance from the upper end surface of the sand discharge table 36 to the roller 1, when one scraper 15 moves between the sand discharge table 36 and the roller 1, one end, far away from the roller 1, of each scraper 15 is abutted against the upper end surface of the sand discharge table 36, molding sand on the sand discharge table 36 is pushed to one side of the recovery tank 3, a plurality of water filtering holes 151 are formed in each scraper 15, and water above each scraper 15 can fall down from the water filtering holes 151; a conveyor belt (not shown) may be attached to one side of the recovery tank 3 to convey the molding sand scraped by the scraper 15 to a sand mold manufacturing process, and the overall processing efficiency is high.

Referring to fig. 2 and 4, after each processing period, when the magnetic metal on the inner wall of the recovery tank 3 and the guide plate 4 is more, the magnetic metal needs to be cleaned to ensure the subsequent magnetic effect. The user stops the water source supply of inlet tube 31 in to recovery pond 3 during clearance, makes the water evacuation in the recovery pond 3, then cuts off power supply with electro-magnet 5, loses the magnetic force and supports the back, and the metal drops in the bottom of recovery pond 3 under the action of gravity, and the bottom of recovery pond 3 is to one side slope of self width direction, makes the metal assemble to the lower one side of height. The bottom of the recovery tank 3 is provided with a vibration motor 7, and at the moment, a user can control the vibration motor 7 to start so that the metal is smoothly gathered.

Referring to fig. 1 and 5, the lower side of the recovery tank 3 is provided with a recovery port 34 and is connected with a blocking cover 37 adapted to the recovery port 34 in a sliding manner along the vertical direction, in a normal processing state, the blocking cover 37 is in a lowest state to close the recovery port 34, and when metal is cleaned, a user pulls the blocking cover 37 upwards to open the recovery port 34, so that the metal can be conveniently separated from the recovery port 34 from the recovery tank 3.

Referring to fig. 1 and 5, the temporary storage bucket 8 is communicated with the recovery port 34, metal enters the temporary storage bucket 8 from the recovery port 34, at this time, a user can reset the blocking cover 37 to close the recovery port 34 again, and then water can be filled into the recovery tank 3 again for processing. The one end and the inlet tube 31 intercommunication of the fill 8 of keeping in, the other end and delivery tube 81 intercommunication, water supplies from delivery tube 81 and keeps in fill 8 in, then in getting into recovery pond 3 through inlet tube 31, wash the metal when fighting 8 through keeping in, wash down the remaining molding sand of metal surface, install second sand screen 82 in the fill 8 of keeping in, the metal is held back in the fill 8 of keeping in by second sand screen 82, the molding sand then gets into recovery pond 3 through inlet tube 31 along with water, when clearance metal makes 8 inner spaces of the fill of keeping in less than many times, the user can open the fill 8 of keeping in and take out the metal of keeping in.

The implementation principle of the embodiment 1 of the application is as follows: the recovery pool 3 is filled with flowing water under the matching of the water inlet pipe 31 and the water outlet pipe 32, the water flows to the water outlet pipe 32 along the wave shape under the guiding action of the guide plate 4, the molding sand falling from the roller 1 directly falls into the recovery pool 3, is mixed and dispersed with the water and flows along with the water flow, meanwhile, the electromagnet 5 is electrified to generate magnetic force, metal in the molding sand is adsorbed to the wall of the guide plate 4 or the recovery pool 3, and the metal can be quickly subjected to magnetic absorption and collection under the dispersing and flowing action of the water, so that the recovery rate of the metal is improved; the molding sand is automatically discharged out of the recovery tank 3 along with the rotation of the drum 1 at the sand discharge table 36, and the overall processing efficiency is high.

Example 2:

referring to fig. 6, the present embodiment is mainly different from embodiment 1 in that: guide plate 4 keeps away from the tip of stiff end 41 to the direction slope that is close to inlet tube 31, at the in-process that the molding sand flows along with water, flows to the direction of 4 stiff ends 41 of guide plate earlier, and rivers are more disorderly, and 3 inner walls of metal contact recovery pond or guide plate 4's probability is bigger, is inhaled by magnetism more easily, and the effect of retrieving is better.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a used sand metal recovery unit, includes cylinder (1) and driving roller (1) along self axis pivoted drive assembly (2), its characterized in that: roller (1) below is equipped with recovery pond (3), the one end intercommunication of recovery pond (3) has inlet tube (31), the other end intercommunication has outlet pipe (32), a plurality of vertical guide plates (4) have been laid along length direction equidistant in recovery pond (3), the one end of guide plate (4) and the pool wall fixed connection who retrieves pond (3), leave the interval between the pool wall of the other end and recovery pond (3), two piece adjacent guide plates (4) respectively with the pool wall fixed connection who retrieves pond (3) width direction both sides, all be equipped with electro-magnet (5) on the pool wall of guide plate (4) and recovery pond (3).

2. The used sand metal recovery device according to claim 1, wherein: the roller (1) comprises an inner cylinder (12) and an outer cylinder (11) which are fixedly connected coaxially, a gap (14) is reserved between the inner cylinder (12) and the outer cylinder (11), a plurality of meshes are uniformly distributed on the inner cylinder (12), a spiral plate (13) is fixedly arranged on one side, close to the axis of the roller (1), of the inner cylinder (12) and the outer cylinder (11), a collecting cylinder (6) is fixedly arranged at one end, close to a water inlet pipe (31), of a recovery tank (3), the collecting cylinder (6) is connected with the roller (1) in a coaxial rotating mode, and the gap (14) is communicated with the collecting cylinder (6) in the collecting cylinder.

3. The used sand metal recovery device according to claim 1, wherein: the bottom of the recovery tank (3) is rotatably connected with a plurality of spiral pushing blades (33), and the pushing direction of the spiral pushing blades (33) is vertical upwards.

4. The used sand metal recovery device according to claim 1, wherein: the utility model discloses a sand washing machine, including recovery tank (3), outlet pipe (32), the intercommunication department of recovery tank (3) is equipped with first sand screen (35), and the one end that is close to outlet pipe (32) in recovery tank (3) is equipped with sand discharging platform (36), and the upper end of sand discharging platform (36) is personally submitted with the coaxial arc of cylinder (1), and cylinder (1) has laid a plurality of scraper blades (15) along circumference, and radial setting along cylinder (1) is all followed in scraper blade (15), and the length of scraper blade (15) equals the interval of cylinder (1) and sand discharging platform (36).

5. The used sand metal recovery device according to claim 1, wherein: guide plate (4) and recovery pond (3) pool wall fixed connection's one end are established to stiff end (41), and one end fixedly connected with baffle (42) of stiff end (41) are kept away from in guide plate (4), baffle (42) and guide plate (4) mutually perpendicular.

6. The used sand metal recovery device according to claim 5, wherein: the end part of the guide plate (4) far away from the fixed end (41) inclines towards the direction close to the water inlet pipe (31).

7. The used sand metal recovery device according to claim 1, wherein: the bottom of the recovery tank (3) is obliquely arranged, the height of one side of the width direction is lower, a recovery opening (34) is formed in the lower side of the height of the recovery tank (3), and a blocking cover (37) is movably connected to the recovery opening (34).

8. The used sand metal recovery device according to claim 7, wherein: the recovery port (34) is communicated with a temporary storage hopper (8), a second sand filtering net (82) is arranged in the temporary storage hopper (8), the water inlet pipe (31) is communicated with the temporary storage hopper (8), and one end, far away from the water inlet pipe (31), of the temporary storage hopper (8) is communicated with a water supply pipe (81).

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