CN117505775B - Casting sand cooling machine - Google Patents

Abstract

The invention relates to the technical field of cooling treatment equipment of casting materials, and particularly discloses a casting sand cooler. According to the casting sand cooler, the separation of casting sand is realized through the separation mechanism, so that the crushing burden is reduced; the casting sand can continuously flow out through the first filter plate, so that the effect of continuous cooling is realized, and the working efficiency is improved.

Description

Casting sand cooling machine

Technical Field

The invention relates to the technical field of cooling treatment equipment of casting materials, in particular to a casting sand cooler.

Background

The casting sand is also called as electrofusion ceramic sand and precious pearl sand, which is prepared by taking high-quality bauxite as a raw material and adopting ceramic sand processes such as calcination, electrofusion, granulation, screening and the like. The casting sand is suitable for various metal castings, and after casting is finished, the temperature of the casting sand is usually higher, and the casting sand can be recovered after being cooled.

Chinese patent publication No. CN112872290B discloses a recycling device of environmental protection molding sand, and the device breaks away from the molding sand of foundry goods through two crushing rollers at first when the device is in operation, avoids molding sand to pile up the piece. Then, when the molding sand is in a cooling link, the lifting machine firstly lifts the molding sand and discharges the molding sand into the cooling box. And then, sealing a cover plate on a feed port cover of the cooling box to ensure the sealing of the cooling box. Then, the material pipe and the spiral blade are driven to rotate by the second motor, and the spiral blade continuously conveys the molding sand in the cooling box downwards; the screw rod is driven to rotate through the first motor, and molding sand in the material pipe is lifted by the screw rod. Meanwhile, the air circulation in the cooling box is quickened through the positive pressure fan and the negative pressure fan, and the purpose of air cooling is achieved.

The device, although realizing automatic breaking and cooling of the molding sand, has the following defects in implementation: after casting, the temperature of the part, close to the casting, of the molding sand or the casting sand is higher than that of the part, far away from the casting, of the molding sand or the casting sand, so that the part, close to the casting, of the molding sand or the casting sand is easy to agglomerate, the part, far away from the casting, is still granular, the two parts of the crushing roller pair are not distinguished and crushed together, the workload of the crushing roller is additionally increased, and the working efficiency is reduced; in addition, the cooling box can only cool the molding sand in batches, but cannot cool continuously, and when the molding sand is cooled each time, the sealing cover plate needs to be taken and placed once, so that the working efficiency is low, the operation is complex, and the labor is consumed.

Disclosure of Invention

The invention provides a casting sand cooler, which aims to solve the problems of reduced working efficiency and labor consumption during the crushing and cooling of casting sand in the related technology.

The casting sand cooler comprises a barrel, a first filter plate, a crushing mechanism, a central shaft, a separating mechanism and a cooling device, wherein the barrel is inclined from top to bottom, two ends of the barrel are closed, and the first filter plate is arranged in the barrel and forms a crushing cavity with the upper end wall of the barrel; the crushing mechanism comprises a supporting body which extends along the axial direction of the cylinder body and is arranged in the crushing cavity, the supporting body is provided with a plurality of blades which are distributed at intervals along the circumferential direction of the cylinder body, the edge of each blade, which is away from the supporting body, is provided with a plurality of rake teeth which are uniformly distributed along the axial direction of the cylinder body, and a rake tooth slot is formed between two adjacent rake teeth; the peripheral wall of the crushing cavity is provided with a plurality of bulge groups which are distributed at intervals along the circumferential direction of the crushing cavity, and the bulge groups comprise bulges which are equal to the number of the harrow tooth grooves of the blade plate and correspond to each other one by one; the central shaft is coaxially and rotatably connected with the cylinder body and penetrates through the supporting body, the upper end of the central shaft protrudes out of the cylinder body, a main runner extending along the length direction of the central shaft is arranged in the central shaft, and the main runner is externally connected with a water source; a plurality of water spray holes are uniformly distributed on the outer surface of the support body, and the water spray holes are communicated with the main flow channel; the cooling device is arranged in the cylinder and positioned below the first filter plate, the separating mechanism is arranged above the cylinder and used for separating agglomerated casting sand from granular casting sand, the agglomerated casting sand and the granular casting sand are respectively conveyed to the crushing cavity and the cooling device, the lower end of the central shaft extends into the cooling device and is connected with the cooling device, and the cooling device can cool the granular casting sand by using cooling water of the main runner.

Preferably, a first partition plate and a second partition plate are arranged in the cylinder body, the first partition plate and the second partition plate are arranged between the first filter plate and the cooling device, a cooling cavity is formed between the first partition plate and the second partition plate, the first partition plate is provided with an inlet for passing casting sand, a first stirring assembly is arranged in the cooling cavity, the first stirring assembly comprises a first rotary table and a first rotary shaft, the middle part of the central shaft penetrates through the first rotary table, and the first rotary table is provided with a first containing groove for butt joint of the inlet; the first rotating shaft extends along the radial direction of the cylinder body and is rotatably arranged in the first containing groove, a plurality of uniformly distributed first stirring rods are arranged on the outer peripheral surface of the first rotating shaft, and a gear mechanism is connected between the first rotating shaft and the first partition plate, so that when the first rotating table rotates along with the central shaft, the first rotating shaft can be driven to rotate through the gear mechanism; a first runner is arranged in the first rotating shaft and is communicated with the main runner, a plurality of first water outlets are uniformly distributed on the peripheral wall of the first rotating shaft and are communicated with the first runner, and a valve for controlling the on-off of the first runner is arranged on the first rotating shaft; the second partition plate is provided with a plurality of air vents which are distributed at intervals along the circumferential direction of the cylinder body; a discharge hole positioned below the first rotary table is formed in the peripheral wall of the cylinder body; the bottom end of the cylinder body is communicated with a vacuum pump.

Preferably, the gear mechanism comprises a first main gear and a first sub gear, the first partition board is provided with a first sleeve, the first sleeve is positioned between the first partition board and the second partition board and sleeved on the central shaft, and the first main gear is sleeved on the first sleeve; the first sub-gear is sleeved on the first rotating shaft and meshed with the first main gear.

Preferably, the first containing groove penetrates through the first rotary table along the axial direction of the cylinder body, and a first ventilation piece is arranged on one side, adjacent to the second partition plate, of the first containing groove.

Preferably, the valve is a first electromagnetic valve, a first temperature sensor and a first weight sensor are arranged in the first material containing groove, the cylinder body is provided with a controller, and the first electromagnetic valve, the first temperature sensor and the first weight sensor are all connected with the controller.

Preferably, the cooling device comprises a third partition plate, a fourth partition plate and a second stirring assembly, wherein the third partition plate and the fourth partition plate are spaced apart in the axial direction of the cylinder body, a cooling cavity is formed between the third partition plate and the fourth partition plate, opposite communication ports are formed in the bottoms of the third partition plate and the fourth partition plate, a limiting ring positioned in the cooling cavity is connected between the third partition plate and the fourth partition plate, an inlet and a through port are formed in the limiting ring, the inlet corresponds to the separating mechanism, and the through port corresponds to the two communication ports; the second stirring assembly is arranged on the inner side of the limiting ring, the second stirring assembly and the first stirring assembly are identical in structure, the fourth partition plate is provided with a plurality of air passing ports distributed along the circumferential direction of the cylinder at intervals, the circumferential wall of the cylinder is provided with a discharge port, the limiting ring is provided with an outlet, and the outlet is communicated with the discharge port and the second stirring assembly.

Preferably, the separating mechanism comprises a material guiding frame and a second filter plate, the material guiding frame is provided with a first material guiding channel and a second material guiding channel which are respectively inclined to two sides, the first material guiding channel is communicated with the crushing cavity, and the second material guiding channel is communicated with the cooling cavity; the second filter plate is formed between the first material guide channel and the second material guide channel, and is used for retaining agglomerated casting sand in the first material guide channel and leading granular casting sand into the second material guide channel; the material guiding frame is provided with a feeding hole which is positioned above the first material guiding channel and communicated with the first material guiding channel.

Preferably, a fan is mounted on the upper end wall of the barrel for drawing out water vapour from the crushing chamber.

Preferably, a supporting frame is arranged below the cylinder body, and the supporting frame can be placed on the ground and supports the cylinder body.

Preferably, a first gear is sleeved at the upper end of the central shaft, a motor is arranged on the support frame, and a second gear meshed with the first gear is sleeved on an output shaft of the motor.

By adopting the technical scheme, the invention has the beneficial effects that:

the separation mechanism separates the agglomerated casting sand from the granular casting sand, and prevents the agglomerated casting sand and the granular casting sand from entering the crushing cavity together, so that the granular casting sand is prevented from interfering the crushing of the agglomerated casting sand, the workload of the blade plate and the rake teeth is reduced, the crushing time is shortened, and the working efficiency is improved. In addition, the broken casting sand after cooling can flow out the broken chamber through first filter plate to make broken chamber can accept casting sand in succession, realized casting sand and last broken and refrigerated effect, and the casting sand receives separating mechanism's blocking when stirring, is difficult for dashing out broken chamber, and the casting sand of follow-up entering broken chamber also can prevent the washing out of the casting sand of broken intracavity simultaneously, has avoided the setting of sealing cover plate from this, and then has avoided sealing cover plate's frequent getting to put, has reduced operating procedure, has practiced thrift the manpower, has also promoted work efficiency simultaneously.

Through the combined use of the first rotary table and the vacuum pump, the casting sand can be cooled secondarily, and the cooled casting sand is still in a dry state, so that retreatment is avoided. The rotation of the first rotating shaft and the first stirring rod realizes stirring of casting sand, and cooling of the casting sand is quickened.

Drawings

Fig. 1 is a schematic perspective view of a foundry sand cooler of the present invention.

FIG. 2 is a schematic cross-sectional view of the foundry sand cooler of the present invention.

Fig. 3 is a schematic structural view of the separation mechanism to crushing mechanism portion of the present invention.

Fig. 4 is an exploded schematic view of the first to second bulkhead portions of the invention.

FIG. 5 is a schematic cross-sectional view of a first shaft to first stirring rod portion of the present invention.

Fig. 6 is a schematic perspective view of the first to second separator plate sections of the present invention.

Fig. 7 is an exploded schematic view of the third to fourth separator plate sections of the present invention.

Fig. 8 is a schematic perspective view of a confinement ring to second stirring assembly portion of the present invention.

Fig. 9 is a further schematic perspective view of the foundry sand cooler of the present invention.

Reference numerals:

1. a cylinder; 11. a support frame; 111. a motor; 112. a second gear; 12. a protrusion; 13. a fan; 14. a first separator; 141. an inlet; 142. a first sleeve; 1421. a first main gear; 15. a second separator; 151. a vent; 16. a third separator; 161. a communication port; 162. a second sleeve; 1621. a second main gear; 17. a fourth separator; 171. a gas passing port; 18. a discharge port; 19. a discharge port;

2. a first filter plate;

3. a central shaft; 31. a first gear; 32. a main flow passage;

4. a support body; 41. a blade; 411. rake teeth; 42. a water spraying hole;

5. a first stirring assembly; 51. a first turntable; 511. a first material accommodating groove; 512. a first side plate; 513. a first connecting plate; 514. a first temperature sensor; 515. a first air permeable member; 52. a first rotating shaft; 521. a first stirring rod; 522. a first flow passage; 523. a first water outlet; 524. a first sub-gear;

6. a material guiding frame; 61. a first material guide channel; 62. a second material guide channel; 63. a second filter plate;

7. a second stirring assembly; 71. a second turntable; 711. a second material accommodating groove; 712. a second air permeable member; 72. a second rotating shaft; 721. a second stirring rod; 722. a second sub gear; 73. defining a ring; 731. an inlet; 732. crossing; 733. and an outlet.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

The foundry sand cooler of the present invention is described below with reference to fig. 1 to 9.

Embodiment 1 as shown in fig. 1 to 3, and referring to the azimuth relation in fig. 1, the foundry sand cooler of the present invention comprises a cylinder 1, a first filter plate 2, a crushing mechanism, a central shaft 3, a separating mechanism and a cooling device, wherein the cylinder 1 is inclined from top to bottom and both ends are closed, a supporting frame 11 is fixed below the cylinder 1, and the supporting frame 11 can be placed on the ground and support the cylinder 1. The first filter plate 2 is arranged in the cylinder 1 and forms a crushing cavity with the upper end wall of the cylinder 1, specifically, the first filter plate 2 is circular and coaxial with the cylinder 1, and a plurality of first filter holes are uniformly distributed on the first filter plate 2.

The crushing mechanism comprises a support body 4 which extends along the axial direction of the cylinder body 1 and is arranged in the crushing cavity, the cross section of the support body 4 is generally square, and the center of the square is coincident with the axis of the cylinder body 1. The support body 4 is provided with a plurality of blades 41 which are equally spaced along the circumferential direction of the cylinder body 1, the edge of the blades 41, which is away from the support body 4, is provided with a plurality of rake teeth 411 which are evenly distributed along the axial direction of the cylinder body 1, rake tooth grooves are formed between two adjacent rake teeth 411, and specifically, the support body 4, the blades 41 and the rake teeth 411 are all integrally formed. The periphery wall of the crushing cavity is provided with a plurality of bulge groups which are distributed at equal intervals along the circumferential direction of the crushing cavity, each bulge group comprises a plurality of bulges 12 which are distributed at equal intervals along the axial direction of the cylinder body 1, and the bulges 12 of each bulge group are equal to the number of the harrow tooth grooves of the blade plate 41 and correspond to each other one by one.

The central shaft 3 is connected with the cylinder 1 in a coaxial rotation way, the central shaft 3 sequentially penetrates through the upper end wall of the cylinder 1 and the supporting body 4 and is fixedly connected with the supporting body 4, and the upper end of the central shaft 3 protrudes out of the cylinder 1. The inside of center pin 3 is equipped with the sprue 32 that extends along its length direction, the upper end of sprue 32 runs through center pin 3 and forms the water inlet, the external water source of water inlet, concretely, this water source can be the combination of water tank and water pump, place a water tank promptly subaerial, install the water pump on the water tank, the water pump passes through the pipeline and dock with the water inlet, it is worth noting that the connected mode of this pipeline and water inlet is rotatory connection, avoid influencing the rotation of center pin 3, when the water pump starts, can constantly input the sprue 32 with the cooling water in the water tank. Of course, the water source may be other existing implementations, and the embodiment is not limited thereto. In addition, the upper end of the central shaft 3 is sleeved with a first gear 31, the supporting frame 11 is provided with a motor 111, the output shaft of the motor 111 is sleeved with a second gear 112, and the second gear 112 is meshed with the first gear 31.

The outer surface of the support body 4 is uniformly provided with a plurality of water spraying holes 42, specifically, the plurality of water spraying holes 42 are divided into four hole groups, the number of the blades 41 is four, the part of the support body 4 between two adjacent blades 41 forms an installation part, the four hole groups are in one-to-one correspondence with the four installation parts, the hole groups are arranged on the corresponding installation parts, and each hole group comprises a row of water spraying holes 42 which are distributed at equal intervals along the axial direction of the cylinder body 1. The water spray holes 42 extend to the inside of the support body 4 in the radial direction of the cylinder body 1, penetrate the peripheral walls of the support body 4 and the center shaft 3 in order, and then the water spray holes 42 communicate with the main flow passage 32.

The heat sink is located in barrel 1 and is located the below of first filter plate 2, and separating mechanism locates the top of barrel 1 and is used for separating the foundry sand of agglomeration and granular foundry sand, and carries both to broken chamber and heat sink respectively in, and the lower extreme of center pin 3 extends to in the heat sink and is connected with the heat sink, and the heat sink can use the cooling water of center pin 3 to granular foundry sand cooling.

When the casting sand separating device is used, casting sand separated from a casting can be input into the separating mechanism, the separating mechanism separates agglomerated parts and granular parts in the casting sand, the agglomerated casting sand is sent into the crushing cavity, and granular casting sand is sent into the cooling device. Then, the motor 111 drives the central shaft 3 to rotate through the first gear 31 and the second gear 112, the central shaft 3 drives the blade 41 and the rake 411 to rotate through the supporting body 4, the blade 41 starts stirring the agglomerated casting sand, and the rake 411 and the protrusion 12 cooperate and squeeze the agglomerated casting sand, so that the volume of the agglomerated casting sand is continuously reduced, and the agglomerated casting sand is crushed and dispersed. At the same time, an external water source supplies water into the main flow channel 32, and the water is sprayed into the crushing cavity through the water spray holes 42 and continuously evaporates and absorbs heat, so that the casting sand is cooled. And the cooling device cools the granular casting sand.

In this embodiment, the separation mechanism is used to separate the agglomerated casting sand from the granular casting sand, so that the agglomerated casting sand and the granular casting sand are prevented from entering the crushing cavity together, thereby avoiding the interference of the granular casting sand with the crushing of the agglomerated casting sand, reducing the workload of the blade plate 41 and the rake teeth 411, shortening the crushing time, and improving the working efficiency. In addition, the broken casting sand after breaking and cooling can flow out of the broken cavity through the first filter plate 2, so that the broken cavity can continuously receive the casting sand, the continuous breaking and cooling effects of the casting sand are realized, the casting sand is blocked by the separating mechanism during stirring, the broken cavity is not easy to wash out, meanwhile, the casting sand which enters the broken cavity subsequently can also prevent the casting sand in the broken cavity from being washed out, and therefore the arrangement of the sealing cover plate in the related art is avoided, the frequent taking and placing of the sealing cover plate are avoided, the operation steps are reduced, the manpower is saved, and meanwhile, the working efficiency is also improved.

Wherein, the upper end wall of barrel 1 installs fan 13, and fan 13 intercommunication crushing chamber and external world, fan 13 are used for taking out the vapor in the crushing chamber. Specifically, after the water of the water spraying holes 42 is sprayed into the crushing cavity, the water is instantaneously evaporated into water vapor under the high temperature of the casting sand, and the water vapor can be extracted and discharged after the fan 13 is started.

Immediately after the casting sand enters the crushing chamber, the temperature is about 300 ℃, and after the initial cooling of the crushing chamber, the temperature is still higher than the set cooling standard of 50 ℃, and in order to further cool the casting sand, the invention also provides the embodiment 2.

In example 2, with continued reference to fig. 2, 4, 5, 6 and 9, the cylinder 1 is provided with a first partition 14 and a second partition 15 between the first filter plate 2 and the cooling device, the first partition 14 and the second partition 15 are spaced apart along the axial direction of the cylinder 1, the first partition 14 and the second partition 15 are both circular and coaxial with the cylinder 1, and a cooling cavity is formed between the first partition 14 and the second partition 15. The first partition 14 is located closer to the first filter plate 2 than the second partition 15, and the bottom of the first partition 14 is provided with an inlet 141 for passing foundry sand. The cooling cavity is internally provided with a first stirring component 5.

The first stirring assembly 5 comprises a first turntable 51 and a first rotating shaft 52, and the first turntable 51 is arranged in the cooling cavity, has a circular cross section and is coaxial with the cylinder 1. The central shaft 3 has its middle portion penetrating the first turntable 51 and is fixedly connected to the first turntable 51. The first turntable 51 is provided with a first receiving groove 511 for abutting the inlet 141, and the inlet 141 and the first receiving groove 511 each have a fan shape coaxial with the cylinder 1.

The first material accommodating groove 511 penetrates through the first rotating table 51 along the axial direction of the cylinder body 1, the first side plates 512 are fixedly attached to the two side walls of the first material accommodating groove 511, and one ends, adjacent to the axis of the first rotating table 51, of the two first side plates 512 are connected through the first connecting plate 513. Be equipped with first temperature sensor 514 and first weight sensor on the first connecting plate 513, first temperature sensor 514 and first weight sensor all are located first holding groove 511, and the perisporium of barrel 1 is equipped with the controller, and first temperature sensor 514 and first weight sensor all are connected with the controller communication.

The first rotary shaft 52 extends in the radial direction of the cylinder 1 and is located in the first receiving groove 511, the first connecting plate 513 is provided with a rotary hole, the first rotary shaft 52 passes through the rotary hole and is rotatably mounted on the central shaft 3, and the first rotary shaft 52 is also rotatably connected with the first connecting plate 513 through the rotary hole. The outer circumferential surface of the first rotation shaft 52 is provided with a plurality of first stirring rods 521 uniformly distributed, and the first stirring rods 521 extend in the radial direction of the first rotation shaft 52. A gear mechanism is connected between the first shaft 52 and the first partition 14 so that the first shaft 52 can be driven to rotate by the gear mechanism when the first turntable 51 rotates with the central shaft 3. The first rotating shaft 52 is internally provided with a first flow passage 522 extending along the length direction of the first rotating shaft 52, the first flow passage 522 is communicated with the main flow passage 32, a plurality of first water outlets 523 are uniformly distributed on the peripheral wall of the first rotating shaft 52, each first water outlet 523 is communicated with the first flow passage 522, the first rotating shaft 52 is provided with a valve (not shown in the figure) for controlling the on-off of the first flow passage 522, the valve is a first electromagnetic valve, and the first electromagnetic valve is in communication connection with a controller.

The second partition plate 15 is provided with a plurality of air vents 151 which are uniformly distributed at intervals along the circumferential direction of the cylinder body 1, specifically, the plane shape of each air vent 151 is a sector coaxial with the cylinder body 1, one side of the first containing groove 511 adjacent to the second partition plate 15 is provided with a first air permeable piece 515, the first air permeable piece 515 can be a sector plate matched with the first containing groove 511, the sector plate is fixedly connected with the first rotating table 51, and the sector plate is provided with uniformly distributed micropores; in another embodiment, the micropores of the sector plate can be replaced by vent holes with larger diameters, and a layer of filter cloth is laid on the plate surface of the sector plate adjacent to the inner side of the first containing groove 511. The peripheral wall of the cylinder 1 is provided with a discharge port 18 positioned below the first turntable 51, and the discharge port 18 is arranged at one side of the first turntable 51. The bottom end of the cylinder 1 is communicated with a vacuum pump, in particular, the vacuum pump can be installed on the supporting frame 11 and also can be directly placed on the ground, and the vacuum pump is communicated with the bottom end of the cylinder 1 through an air pipe.

The casting sand flowing out of the crushing chamber continues to flow downwards under the action of gravity and enters the cooling chamber through the inlet 141, the temperature of the casting sand entering the cooling chamber being still higher than 50 degrees. At this time, the central shaft 3 is still in a rotating state and drives the first rotating table 51 to rotate, when the first containing groove 511 is in butt joint with the inlet 141, casting sand flows into the first containing groove 511, the first rotating table 51 drives casting sand in the first containing groove 511 to rotate, and the first rotating shaft 52 rotates and drives the first stirring rod 521 to rotate through the gear mechanism, so that the first stirring rod 521 stirs casting sand in the first containing groove 511. Meanwhile, the first weight sensor and the first temperature sensor 514 measure the weight and temperature of the casting sand in the first holding tank 511, thereby determining the water outlet frequency of the first water outlet 523. When the first containing groove 511 is about to rotate to the position of the air vent 151, the controller controls the first electromagnetic valve to open the first runner 522, and water in the first runner 522 is sprayed out from the first water outlet 523, so that casting sand in the first containing groove 511 is cooled. When the first containing groove 511 rotates to the position of the air vent 151, the vacuum pump forms a low-pressure environment in the cooling cavity, so that the boiling point of water is reduced, the water in the first containing groove 511 is vaporized, and the water is pumped away by the vacuum pump through the first ventilation piece 515, so that the casting sand in the first containing groove 511 is recovered to a dry state. The controller controls the opening and closing times of the first electromagnetic valve according to the weight of the casting sand and the initial temperature data, so as to realize the water spraying of the first water outlet 523 for several times. After several iterations, the temperature of the foundry sand can be reduced to about 50 degrees. The design realizes the gradual cooling of the casting sand, and simultaneously ensures that the cooled casting sand is still in a dry state. Then, the first containing groove 511 drives the casting sand to rotate to the position of the discharge hole 18, the casting sand is discharged out of the cylinder body 1 through the discharge hole 18 under the action of dead weight, at the moment, the holding tool can be held for holding the discharged casting sand, or a collecting barrel is placed below the discharge hole 18, and the casting sand falls into the collecting barrel, so that the recovery of the casting sand is realized.

The first container 511, the first side plate 512, the first connecting plate 513, the first weight sensor, the first temperature sensor 514, the first rotating shaft 52, and the first stirring rod 521 constitute a stirring unit, and the stirring units are plural and uniformly distributed in the circumferential direction of the cylinder 1.

The gear mechanism includes a first main gear 1421 and a first sub gear 524, the first partition 14 is fixed with a first sleeve 142, the first sleeve 142 is located between the first partition 14 and the second partition 15 and sleeved on the central shaft 3, a first accommodating groove is provided in the center of the first rotating table 51, and the first main gear 1421 is located in the first accommodating groove and sleeved on the first sleeve 142. The first sub gear 524 is sleeved on the first rotating shaft 52 and meshed with the first main gear 1421.

When the central shaft 3 drives the first turntable 51 to rotate, the first turntable 51 drives the first rotating shaft 52 to revolve around the axis of the central shaft 3, and under the meshing action of the first sub gear 524 and the first main gear 1421, the first rotating shaft 52 also rotates during revolution, so that stirring of casting sand in the first holding tank 511 is realized.

It can be appreciated that the first sub-gears 524 are equal to and correspond to the first rotating shafts 52 one by one, and the first sub-gears 524 are sleeved on the corresponding first rotating shafts 52.

In order to embody the cooling process of the separated granular foundry sand, the present invention also provides example 3.

Embodiment 3 with continued reference to fig. 2, 7, 8 and 9, the cooling device includes a third partition 16, a fourth partition 17 and a second stirring assembly 7, where the third partition 16 and the fourth partition 17 are circular plates coaxial with the cylinder 1 and are spaced apart in the axial direction of the cylinder 1, and the third partition 16 and the fourth partition 17 are fixedly connected with the cylinder 1, and form a cooling cavity therebetween. The bottom of the third partition plate 16 and the bottom of the fourth partition plate 17 are both provided with communication ports 161, and the two communication ports 161 are opposed in the axial direction of the cylinder 1. A limiting ring 73 is connected between the third partition 16 and the fourth partition 17 and is positioned in the cooling cavity, the limiting ring 73 is provided with an inlet 731 and a through hole 732, the inlet 731 corresponds to the separating mechanism, the through hole 732 corresponds to the two communication holes 161, and the two communication holes 161 and the through hole 732 are used for enabling a gas passage to be formed between the third partition 16 and the vacuum pump, so that the vacuum pump can conveniently act on the area of the first turntable 51. The second stirring assembly 7 is arranged inside the limiting ring 73, and the second stirring assembly 7 and the first stirring assembly 5 have the same structure.

In short, the second stirring assembly 7 includes a second turntable 71 and a second rotating shaft 72, the cross section of the second turntable 71 is circular coaxially with the cylinder 1, the lower end of the central shaft 3 penetrates and fixes the second turntable 71, and the second turntable 71 is provided with a second receiving groove 711. The both sides wall of first hold silo 511 all laminates and is fixed with the second curb plate, and two second curb plates are connected through the second even board, and the second even board is equipped with second temperature sensor and second weight sensor, and second temperature sensor and second weight sensor are connected with the controller communication respectively.

The second rotating shaft 72 extends along the radial direction of the cylinder 1 and is positioned in the second containing groove 711, the second rotating shaft 72 penetrates through the second connecting plate and is rotatably mounted on the central shaft 3, second stirring rods 721 which are uniformly distributed are arranged on the outer peripheral surface of the second rotating shaft 72, a second sleeve 162 positioned in the cooling cavity is fixed on the third partition plate 16, a second containing groove is formed in the center of the second rotating table 71, a second main gear 1621 sleeved on the second sleeve 162 is arranged in the second containing groove, a second sub gear 722 is sleeved on the second rotating shaft 72, and the second sub gear 722 is meshed with the second main gear 1621. The second rotating shaft 72 is internally provided with a second flow passage communicated with the main flow passage 32, second water outlets are uniformly distributed on the peripheral wall of the second rotating shaft 72 and communicated with the second flow passage, and the second rotating shaft 72 is provided with a second electromagnetic valve in communication connection with the controller. The fourth partition 17 is provided with a plurality of ventilation openings 171 equally spaced along the circumferential direction of the cylinder 1, and the second container 711 is provided with a second ventilation member 712 on the side adjacent to the fourth partition 17, and the second ventilation member 712 has the same structure as the first ventilation member 515. The peripheral wall of the cylinder 1 is provided with a discharge opening 19 located below the second stirring assembly 7, the confinement ring 73 is provided with an outlet 733, and the outlet 733 communicates with the discharge opening 19 and the second stirring assembly 7.

When the central shaft 3 rotates, the second rotary table 71 is driven to rotate, the second rotary table 71 drives the second containing groove 711 to rotate, and when the second containing groove 711 is in butt joint with the inlet 731, granular casting sand in the separating mechanism flows into the second containing groove 711 through the inlet 731 under the action of gravity. When the second holding tank 711 continues to rotate to the position where the air passing port 171 is to be reached, the controller controls the second electromagnetic valve to open, and the second runner sprays water into the second holding tank 711 to reduce the temperature of the casting sand. The second weight sensor and the second temperature sensor are used for measuring the weight and the temperature of the casting sand in the second holding tank 711, and the controller controls the water spraying times according to the weight and the temperature data, so that the effect of gradually cooling is realized. The vacuum pump forms a low pressure environment in the cooling chamber, reduces the boiling point of water, so that when the second holding tank 711 is in butt joint with the gas passing port 171, the water in the second holding tank 711 can be vaporized and pumped out, and further the casting sand is kept in a dry state. When the second holding tank 711 is rotated to the position of the outlet 733, the casting sand is discharged from the cylinder 1 through the outlet 733 and the discharge port 19 by gravity. When the second rotating shaft 72 rotates along with the second material accommodating groove 711, the second rotating shaft 72 rotates under the engagement of the second sub gear 722 and the second main gear 1621, and further drives the second stirring rod 721 to rotate, and the second stirring rod 721 stirs the casting sand in the second material accommodating groove 711.

Wherein, separating mechanism includes guide frame 6 and second filter plate 63, and guide frame 6 has the first guide way 61 and the second guide way 62 that incline to both sides respectively, and first guide way 61 communicates with the crushing chamber, and second guide way 62 communicates with the cooling chamber. The second filter plate 63 is formed between the first guide channel 61 and the second guide channel 62, the second filter plate 63 is used for retaining agglomerated casting sand in the first guide channel 61 and allowing granular casting sand to pass into the second guide channel 62, and as can be appreciated, the second filter plate 63 separates the first guide channel 61 from the second guide channel 62, and a plurality of second filter holes are uniformly distributed on the second filter plate 63. The guide frame 6 has a feed port located above the first guide channel 61 and communicating with the first guide channel 61.

When in use, casting sand is poured into the first guide channel 61 of the guide frame 6 from the feed inlet and slides downwards along the first guide channel 61, and when passing through the second filter plate 63, granular casting sand flows into the second guide channel 62 through the second filter plate 63 and flows into the cooling cavity along the second guide channel 62; while the agglomerated casting sand remaining in the first guide channel 61 continues to flow downwardly into the crushing chamber.

Referring to fig. 1 to 9, the implementation flow of the present invention is:

firstly, the casting sand is automatically separated when poured through the separating mechanism. Then, the agglomerated casting sand flows into the crushing chamber and is crushed by the blades 41, the tines 411 and the projections 12, while the main runner 32 sprays water to the casting sand through the water spray holes 42 to cool down, thereby achieving primary cooling of the casting sand. Then, the crushed casting sand flows out of the crushing cavity through the first filter plate 2 and then flows into the first containing groove 511 through the inlet 141, the central shaft 3 rotates with the first containing groove 511 through the first rotary table 51, and water is sprayed into the first containing groove 511 through the main runner 32, the first runner 522 and the first water outlet 523, so that the casting sand is cooled secondarily, and meanwhile, the first rotary shaft 52 drives the first stirring rod 521 to rotate, stirring of the casting sand is realized, and the cooling rate is increased. After reaching the cooled set temperature, the foundry sand is discharged from the discharge port 18.

At the same time, the granular casting sand flows into the cooling cavity and enters the second holding tank 711 through the inlet 731, the central shaft 3 rotates with the second holding tank 711 through the second turntable 71, water is sprayed into the second holding tank 711 through the main runner 32, the second runner and the second water outlet to cool the casting sand, and meanwhile, the second rotating shaft 72 drives the second stirring rod 721 to stir the casting sand, so that cooling is accelerated. After the set temperature is reached, the casting sand is discharged from the outlet 733 and the discharge port 19. It is noted that the agglomerated foundry sand is cooled twice because the initial temperature of the agglomerated foundry sand is higher than the granular foundry sand.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.

Claims (6)

1. Casting sand cooler, including from top to bottom slope and both ends confined barrel (1), characterized in that still includes:

the first filter plate (2) is arranged in the cylinder (1) and forms a crushing cavity with the upper end wall of the cylinder (1);

the crushing mechanism comprises a supporting body (4) extending along the axial direction of the cylinder body (1) and arranged in the crushing cavity, the supporting body (4) is provided with a plurality of blades (41) distributed at intervals along the circumferential direction of the cylinder body (1), the edge of the blades (41) away from the supporting body (4) is provided with a plurality of rake teeth (411) uniformly distributed along the axial direction of the cylinder body (1), and a rake tooth groove is formed between two adjacent rake teeth (411); the peripheral wall of the crushing cavity is provided with a plurality of bulge groups which are distributed at intervals along the circumferential direction of the crushing cavity, and the bulge groups comprise bulges (12) which are equal to the number of the rake teeth grooves of the blade plate (41) and correspond to each other one by one;

the central shaft (3) is coaxially and rotatably connected with the cylinder body (1) and penetrates through the supporting body (4), the upper end of the central shaft (3) protrudes out of the cylinder body (1), a main runner (32) extending along the length direction of the central shaft (3) is arranged in the central shaft (3), and the main runner (32) is externally connected with a water source; a plurality of water spray holes (42) are uniformly distributed on the outer surface of the support body (4), and the water spray holes (42) are communicated with the main flow channel (32);

the separation mechanism is arranged above the cylinder (1) and used for separating agglomerated casting sand from granular casting sand, the separation mechanism and the cooling device are respectively conveyed into the crushing cavity and the cooling device, the lower end of the central shaft (3) extends into the cooling device and is connected with the cooling device, and the cooling device can cool the granular casting sand by using cooling water of the main flow channel (32);

a first partition plate (14) and a second partition plate (15) which are positioned between the first filter plate (2) and the cooling device are arranged in the cylinder body (1), a cooling cavity is formed between the first partition plate (14) and the second partition plate (15), an inlet (141) for passing casting sand is formed in the first partition plate (14), a first stirring assembly (5) is arranged in the cooling cavity, the first stirring assembly (5) comprises a first rotary table (51) and a first rotary shaft (52), the middle part of the central shaft (3) penetrates through the first rotary table (51), and a first containing groove (511) for butt joint of the inlet (141) is formed in the first rotary table (51); the first rotating shaft (52) extends along the radial direction of the cylinder body (1) and is rotatably arranged in the first containing groove (511), a plurality of uniformly distributed first stirring rods (521) are arranged on the outer peripheral surface of the first rotating shaft (52), and a gear mechanism is connected between the first rotating shaft (52) and the first partition plate (14), so that when the first rotating table (51) rotates along with the central shaft (3), the first rotating shaft (52) can be driven to rotate through the gear mechanism; a first runner (522) is arranged in the first rotating shaft (52), the first runner (522) is communicated with the main runner (32), a plurality of first water outlets (523) are uniformly distributed on the peripheral wall of the first rotating shaft (52), the first water outlets (523) are communicated with the first runner (522), and a valve for controlling the on-off of the first runner (522) is arranged on the first rotating shaft (52); the second partition plate (15) is provided with a plurality of ventilation openings (151) which are distributed at intervals along the circumferential direction of the cylinder body (1); the peripheral wall of the cylinder body (1) is provided with a discharge hole (18) positioned below the first rotating table (51); the bottom end of the cylinder body (1) is communicated with a vacuum pump;

the gear mechanism comprises a first main gear (1421) and a first sub-gear (524), the first partition board (14) is provided with a first sleeve (142), the first sleeve (142) is positioned between the first partition board (14) and the second partition board (15) and sleeved on the central shaft (3), and the first main gear (1421) is sleeved on the first sleeve (142); the first sub gear (524) is sleeved on the first rotating shaft (52) and meshed with the first main gear (1421);

the first material containing groove (511) penetrates through the first rotating table (51) along the axial direction of the cylinder body (1), and a first ventilation piece (515) is arranged on one side, adjacent to the second partition plate (15), of the first material containing groove (511);

the valve is a first electromagnetic valve, a first temperature sensor (514) and a first weight sensor are arranged in the first containing groove (511), the cylinder body (1) is provided with a controller, and the first electromagnetic valve, the first temperature sensor (514) and the first weight sensor are connected with the controller.

2. The foundry sand cooler of claim 1 wherein the cooling means comprises:

the cooling device comprises a third partition plate (16) and a fourth partition plate (17), wherein the third partition plate (16) and the fourth partition plate (17) are spaced apart in the axial direction of the cylinder body (1) and form a cooling cavity therebetween, opposite communication ports (161) are formed in the bottoms of the third partition plate (16) and the fourth partition plate (17), a limiting ring (73) positioned in the cooling cavity is connected between the third partition plate (16) and the fourth partition plate (17), the limiting ring (73) is provided with an inlet (731) and a through port (732), the inlet (731) corresponds to the separating mechanism, and the through port (732) corresponds to the two communication ports (161);

the second stirring assembly (7), second stirring assembly (7) are located inject ring (73) inboard, second stirring assembly (7) with the structure of first stirring assembly (5) is the same, fourth baffle (17) are equipped with along a plurality of air ports (171) of circumference interval distribution of barrel (1), the perisporium of barrel (1) is equipped with bin outlet (19), inject ring (73) and be equipped with export (733), export (733) intercommunication bin outlet (19) with second stirring assembly (7).

3. The foundry sand cooler of claim 2 wherein the separation mechanism comprises:

the material guiding frame (6) is provided with a first material guiding channel (61) and a second material guiding channel (62) which are respectively inclined to two sides, the first material guiding channel (61) is communicated with the crushing cavity, and the second material guiding channel (62) is communicated with the cooling cavity;

a second filter plate (63), wherein the second filter plate (63) is formed between the first guide channel (61) and the second guide channel (62), and the second filter plate (63) is used for retaining agglomerated casting sand in the first guide channel (61) and leading granular casting sand into the second guide channel (62); the material guiding frame (6) is provided with a feeding hole which is positioned above the first material guiding channel (61) and communicated with the first material guiding channel (61).

4. Casting sand cooler according to claim 1, characterized in that a fan (13) is mounted to the upper end wall of the cylinder (1), which fan (13) is used for extracting the water vapour in the crushing chamber.

5. Casting sand cooler according to claim 1, characterized in that a support frame (11) is provided below the cylinder (1), which support frame (11) can be placed on the ground and supports the cylinder (1).

6. Casting sand cooler according to claim 5, characterized in that the upper end of the central shaft (3) is sleeved with a first gear (31), the support frame (11) is provided with a motor (111), and the output shaft of the motor (111) is sleeved with a second gear (112) meshed with the first gear (31).