Iron removal device for molding sand for casting

Abstract

The utility model discloses an iron removal device for casting molding sand. The iron removal device comprises a shell, a feeding mechanism, a magnetic attraction mechanism and an iron collection box, a feeding mechanism is arranged at the top of the shell and communicated with the shell, a plurality of magnetic attraction mechanisms are arranged in the shell and detachably connected with the inner wall of the shell, and an iron collecting box is arranged at the inner bottom of the shell and slidably connected with the shell. The magnetic attraction mechanism comprises an inclined plate and an electromagnet, one side of the inclined plate makes contact with the molding sand, the other side of the inclined plate is slidably connected with the electromagnet, the electromagnet comprises an iron plate and a wire column, one side of the iron plate makes contact with the inclined plate, the other side of the iron plate is integrally connected with the wire column, and a coil is arranged on the side face of the wire column. In the using process of the device, the iron removal effect of molding sand can be improved, and the molding sand recycling efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of casting production equipment, in particular to an iron removal device for casting molding sand. Background Art

[0002] Molding sand is mainly used in the field of casting production. It is generally made by mixing raw sand, molding sand binder, auxiliary materials and other molding materials in a ratio. The amount of molding sand used during casting is large, so recycling molding sand is of great significance for reducing the cost of casting. The quality of molding sand has a great impact on the quality of castings. The recycled molding sand needs to remove iron-containing substances. In the existing technology, in the process of iron removal, a conveyor belt is generally used to transport the recycled molding sand, so that the molding sand passes through a section with a strong magnetic source, so that the iron-containing substances are separated from the molding sand under the influence of the magnetic force, and the separated molding sand leaves with the conveyor belt. In the actual use process, there is a certain iron removal effect, but the effect on the iron-containing substances at the bottom of the molding sand is limited, and the iron removal effect of the molding sand at the bottom is not obvious enough. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides an iron removal device for casting sand.

[0004] The technical solution of the utility model is: an iron removal device for casting sand, including a shell, a feeding mechanism, a magnetic suction mechanism and an iron collecting box. A feeding mechanism is provided on the top of the shell, and the feeding mechanism is connected to the shell. A plurality of magnetic suction mechanisms are provided inside the shell, and the magnetic suction mechanism is detachably connected to the inner wall of the shell. An iron collecting box is provided at the inner bottom of the shell, and the iron collecting box is slidably connected to the shell. The magnetic suction mechanism includes an inclined plate and an electromagnet, one side of the inclined plate contacts the molding sand, and the other side is slidably connected to the electromagnet. The electromagnet includes an iron plate and a wire column, one side of the iron plate contacts the inclined plate, and the other side is integrally connected to the wire column, and a coil is provided on the side of the wire column.

[0005] Furthermore, the inclined plate is provided with side edges on both sides, and a plurality of evenly spaced through holes are provided in the length direction of the side edges. Positioning holes are provided on the side walls of the shell at positions corresponding to the through holes, and fasteners are provided in the through holes, and the fasteners pass through the through holes and the positioning holes.

[0006] Furthermore, a side groove matching the iron plate is provided on the bottom surface of the inclined plate, and one end of the side groove is open and the other end is closed.

[0007] Furthermore, the feeding mechanism includes a silo, a bidirectional screw rod and a motor; the top of the silo is open, the bottom of the silo is connected to the outer shell, and a bidirectional screw rod is provided in the silo, one end of the bidirectional screw rod is rotatably connected to the side wall of the silo, and the other end passes through the silo and is fixedly connected to the output end of the motor.

[0008] Furthermore, an air blowing mechanism is provided on one side of the shell, and the air blowing mechanism includes multiple branch pipes and a main pipe. One end of the branch pipe extends into the interior of the shell, and the other end is connected to the main pipe, and the main pipe is connected to an external high-pressure air source.

[0009] Furthermore, a first baffle is provided inside the shell at a position corresponding to the air blowing mechanism, the upper portion of the first baffle is hinged to the shell, one side of the first baffle is in contact with the molding sand, and the other side is in contact with the gas blown out of the branch pipe.

[0010] Furthermore, the iron collection box includes a box body, a handle and a limit block; the top surface of the box body is open, V-shaped grooves are provided on both sides of the box body, the inner wall of the outer shell is provided with a V-shaped guide rail matching the V-shaped grooves, one side of the box body is provided with a limit block, and the other side is provided with a handle; a plurality of support rods are provided between the two walls of the box body where the handle and the limit block are respectively provided.

[0011] Furthermore, the bottom of the box body is an inclined surface, and the side of the box bottom close to the handle is lower than the side close to the limit block, and an opening is provided at the lower part of the box bottom corresponding to the side of the box body provided with the handle.

[0012] Furthermore, a discharge port is provided on the bottom surface of the shell, a slope is provided on the side of the inner bottom wall of the shell close to the iron collecting box, a slope is provided on one side of the discharge port, and a second baffle is provided on the other side, and the second baffle is fixedly connected to the shell.

[0013] Compared with the prior art, the utility model has the following advantages: after the electromagnet is energized, the iron plate has strong magnetism. After the molding sand passes through the surface of the inclined plate, the iron-containing substances will be adsorbed on the surface of the inclined plate under the action of magnetism. Multiple magnetic suction mechanisms can remove iron from the molding sand multiple times. When the molding sand is transferred between the magnetic suction mechanisms, it is turned over, so that the iron-containing substances at the bottom of the molding sand are turned up, thereby improving the iron removal effect; when the supply of molding sand is stopped and the electromagnet is powered off, the iron-containing substances on the surface of the inclined plate roll along the inclined plate into the iron collecting box, and the iron-containing substances are centrally processed through the iron collecting box; the entire iron removal process is carried out in a closed outer shell, which can prevent dust pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is an overall schematic diagram of the utility model;

[0016] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0017] Figure 3 This is a schematic diagram of the iron box of the utility model;

[0018] Figure 4 This is an exploded view of the inclined plate and the electromagnet of the utility model.

[0019] Among them: 1. Shell; 2. Feeding mechanism; 3. Iron collecting box; 4. Magnetic suction mechanism; 5. Air blowing mechanism; 11. First baffle; 12. Second baffle; 13. Slope; 14. Discharge port; 15. Positioning hole; 21. Bin; 22. Bidirectional screw rod; 23. Motor; 31. Box body; 32. Handle; 33. Box bottom; 311. V-shaped groove; 312. Limit block; 321. Opening; 322. Support rod; 41. Inclined plate; 42. Electromagnet; 411. Side; 412. Through hole; 413. Side groove; 421. Iron plate; 422. Wire column; 423. Coil; 51. Branch pipe; 52. Main pipe. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0021] The specific implementation of the utility model will be described below in conjunction with the accompanying drawings:

[0022] like Figures 1 to 4As shown, an iron removal device for molding sand for casting includes a shell 1, a feeding mechanism 2, a magnetic attraction mechanism 4 and an iron collecting box 3. A feeding mechanism 2 is provided on the top of the shell 1, and the feeding mechanism 2 is connected to the shell 1. A plurality of magnetic attraction mechanisms 4 are provided inside the shell 1. An iron collecting box 3 is provided at the inner bottom of the shell 1, and the iron collecting box 3 is slidably connected to the shell 1. The magnetic attraction mechanism 4 includes an inclined plate 41 and an electromagnet 42. One side of the inclined plate 41 contacts the molding sand, and the other side is slidably connected to the electromagnet 42. The electromagnet 42 includes an iron plate 421 and a wire column 422. One side of the iron plate 421 contacts the inclined plate 41, and the other side is integrally connected to the wire column 422. A coil 423 is provided on the side of the wire column 422. When the coil 423 is energized, the iron plate 421 has a strong magnetism. When the molding sand passes through the inclined plate 41, the iron-containing material is adsorbed on the inclined plate 41, and the separated molding sand is discharged from the discharge port 14 at the bottom of the shell 1. Multiple magnetic suction mechanisms 4 can remove iron from the molding sand multiple times, and turn the molding sand over, so that the iron-containing substances at the bottom of the molding sand can also be separated, which greatly improves the effect and efficiency of iron removal. After the supply of molding sand is stopped, the coil 423 is powered off, and the iron-containing substances roll down into the iron collecting box 3 along the inclined plate 41. The bottom surface of the outer shell 1 is provided with a discharge port 14, and the inner bottom wall of the outer shell 1 is provided with a slope 13 on the side close to the iron collecting box 3. One side of the discharge port 14 is provided with a slope 13, and the other side is provided with a second baffle 12, and the second baffle 12 is fixedly connected to the outer shell 1. Under the action of the second baffle 12 and the slope 13, the molding sand after iron removal is smoothly discharged from the discharge port 14 to prevent the molding sand from remaining in the outer shell 1.

[0023] Side edges 411 are provided on both sides of the inclined plate 41, and a plurality of evenly spaced through holes 412 are provided in the length direction of the side edges 411. Positioning holes 15 are provided on the side walls of the outer shell 1 at positions corresponding to the through holes 412, and fasteners are provided in the through holes 412, and the fasteners pass through the through holes 412 and the positioning holes 15. The magnetic attraction mechanism 4 is detachably connected to the outer shell 1 through fasteners, and the detachable magnetic attraction mechanism 4 is convenient for maintenance or replacement, so as to maintain the iron removal effect of the device. The bottom surface of the inclined plate 41 is provided with a side groove 413 that matches the iron plate 421, and one end of the side groove 413 is open and the other end is closed. One side of the iron plate 421 slides into the side groove 413 along the open end of the side groove 413 and fits with one side of the closed end of the side groove 413. The inclined plate 41 is made of ceramic material, has good wear resistance, and has low adhesion to iron-containing substances.

[0024] The feeding mechanism 2 includes a silo 21, a bidirectional screw rod 22 and a motor 23. The top of the silo 21 is open, and the bottom of the silo 21 is connected to the housing 1. A bidirectional screw rod 22 is arranged in the silo 21, one end of which is rotatably connected to the side wall of the silo 21, and the other end passes through the silo 21 and is fixedly connected to the output end of the motor 23. When the motor 23 is started, the bidirectional screw rod 22 evenly separates the molding sand in the silo 21 along the width of the silo 21, so that the molding sand evenly falls on the inclined plate 41 inside the housing 1, so that the molding sand is fully in contact with the surface of the inclined plate 41, thereby improving the efficiency of iron removal.

[0025] An air blowing mechanism 5 is provided on one side of the shell 1. The air blowing mechanism 5 includes a plurality of branch pipes 51 and a main pipe 52. One end of the branch pipe 51 extends into the interior of the shell 1, and the other end is connected to the main pipe 52. The main pipe 52 is connected to an external high-pressure gas source. A first baffle 11 is provided at a position corresponding to the air blowing mechanism 5 inside the shell 1. The upper part of the first baffle 11 is hinged to the shell 1. One side of the first baffle 11 contacts the molding sand, and the other side contacts the gas blown out of the branch pipe 51. The high-pressure gas is evenly dispersed from the main pipe 52 into each branch pipe 51, so that the airflow is evenly blown into the interior of the shell 1. Under the action of the baffle, the molding sand can be prevented from contacting the branch pipe 51, and at the same time, an airflow flowing along the surface of the inclined plate 41 is formed to ensure the cleanliness of the surface of the inclined plate 41.

[0026] The iron collecting box 3 includes a box body 31, a handle 32 and a stop block 312. The top surface of the box body 31 is open, and V-shaped grooves 311 are provided on both sides of the box body 31. The inner side wall of the shell 1 is provided with a V-shaped guide rail matching the V-shaped groove 311. One side of the box body 31 is provided with a stop block 312, and the other side is provided with a handle 32. A plurality of support rods 322 are provided between the two walls of the box body 31, which are respectively provided with the handle 32 and the stop block 312. The support rods 322 can enhance the strength of the side wall of the box body 31 to prevent the side wall of the box body 31 from being deformed during the process of pulling the handle 32. The bottom 33 of the box body 31 is an inclined surface, and the side of the bottom 33 close to the handle 32 is lower than the side close to the stop block 312. The side of the box body 31 provided with the handle 32 is provided with an opening 321 at the lower part of the bottom 33 corresponding to the bottom 33. When it is necessary to take the iron-containing material on the inclined plate 41 out of the shell 1, the iron collecting box 3 is pushed into the inside of the shell 1 along the V-shaped guide rail. The open end of the box body 31 faces the bottom end of the inclined plate 41. After the coil 423 is powered off, the iron-containing material slides down the inclined plate 41 into the box body 31 under the action of gravity and airflow. When the iron-containing material falls to the box bottom 33, it falls along the inclined box bottom 33 to the opening 321 and is discharged from the shell 1. When it is not necessary to take out the iron-containing material, the iron collecting box 3 is pulled out along the V-shaped guide rail. The limit block 312 can prevent the iron collecting box 3 from being separated from the shell 1, and at the same time limit one side of the box body 31 to coincide with the inner wall of the shell 1, so that the side wall of the shell 1 is closed to the outside.

[0027] The working principle of the specific implementation of the utility model is as follows: the coil 423 is energized, and the molding sand is uniformly introduced into the interior of the housing 1 through the feeding mechanism 2, and contacts the inclined plate 41. The molding sand flows and turns along the inclined plate 41, and under the magnetic force of the electromagnet 42, the iron-containing material is adsorbed on the inclined plate 41, and the molding sand after iron removal flows along the inclined plate 41 to the discharge port 14 and is discharged from the housing 1; the supply of molding sand is stopped, and the iron collecting box 3 is pushed into the housing 1, the coil 423 is de-energized, and the iron-containing material loses the effect of the magnetic force, and rolls down along the inclined plate 41 under the action of gravity, and finally falls into the iron collecting box 3, and falls out of the housing 1 through the iron collecting box 3.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an element centered thereon. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an element centered thereon. The terms "upper", "lower", "left", "right", "front", "rear" and similar expressions used herein are for illustrative purposes only.

[0029] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A device for removing iron from foundry sand, characterized in that: The invention comprises a shell (1), a feeding mechanism (2), a magnetic attraction mechanism (4) and an iron collection box (3); the feeding mechanism (2) is arranged on the top of the shell (1), the feeding mechanism (2) is communicated with the shell (1), a plurality of magnetic attraction mechanisms (4) are arranged inside the shell (1), the magnetic attraction mechanisms (4) are detachably connected to the inner wall of the shell (1), the iron collection box (3) is arranged on the inner bottom of the shell (1), the iron collection box (3) is slidably connected to the shell (1) The magnetic attraction mechanism (4) comprises an inclined plate (41) and an electromagnet (42), one side of the inclined plate (41) is in contact with the molding sand, and the other side is slidably connected to the electromagnet (42), the electromagnet (42) comprises an iron plate (421) and a wire column (422), one side of the iron plate (421) is in contact with the inclined plate (41), and the other side is integrally connected to the wire column (422), and a coil (423) is provided on the side of the wire column (422).

2. The iron removal device for casting sand according to claim 1, characterized in that: The inclined plate (41) is provided with side edges (411) on both sides, and a plurality of evenly spaced through holes (412) are provided in the length direction of the side edges (411), and a positioning hole (15) is provided on the side wall of the housing (1) at a position corresponding to the through hole (412), and the through hole (412) is provided with a fastener, and the fastener passes through the through hole (412) and the positioning hole (15).

3. The iron removal device for casting sand according to claim 1, characterized in that: The bottom surface of the inclined plate (41) is provided with a side groove (413) matching the iron plate (421), and one end of the side groove (413) is open and the other end is closed.

4. The iron removal device for casting sand according to claim 1, characterized in that: The feeding mechanism (2) comprises a silo (21), a bidirectional screw rod (22) and a motor (23); the top of the silo (21) is open, the bottom of the silo (21) is in communication with the housing (1), the bidirectional screw rod (22) is arranged in the silo (21), one end of the bidirectional screw rod (22) is rotatably connected to the side wall of the silo (21), and the other end passes through the silo (21) and is fixedly connected to the output end of the motor (23).

5. The iron removal device for casting sand according to claim 1, characterized in that: An air blowing mechanism (5) is provided on one side of the shell (1), and the air blowing mechanism (5) comprises a plurality of branch pipes (51) and a main pipe (52), one end of the branch pipe (51) extends into the interior of the shell (1), and the other end is connected to the main pipe (52), and the main pipe (52) is connected to an external high-pressure air source.

6. The iron removal device for casting sand according to claim 5, characterized in that: A first baffle (11) is provided inside the shell (1) at a position corresponding to the air blowing mechanism (5); the upper portion of the first baffle (11) is hinged to the shell (1); one surface of the first baffle (11) is in contact with the molding sand, and the other surface is in contact with the gas blown out of the branch pipe (51).

7. The iron removal device for casting sand according to claim 1, characterized in that: The iron collection box (3) comprises a box body (31), a handle (32) and a limit block (312); the top surface of the box body (31) is open, two sides of the box body (31) are provided with V-shaped grooves (311), the inner side wall of the shell (1) is provided with a V-shaped guide rail matching the V-shaped groove (311), one side of the box body (31) is provided with the limit block (312), and the other side is provided with the handle (32); a plurality of support rods (322) are provided between the two walls of the box body (31) on which the handle (32) and the limit block (312) are respectively provided.

8. The iron removal device for casting sand according to claim 7, characterized in that: The box bottom (33) of the box body (31) is an inclined surface, and the side of the box bottom (33) close to the handle (32) is lower than the side close to the limit block (312). The side of the box body (31) provided with the handle (32) is provided with an opening (321) at a lower part corresponding to the box bottom (33).

9. The iron removal device for casting sand according to claim 1, characterized in that: The bottom surface of the outer shell (1) is provided with a discharge port (14), and the inner bottom wall of the outer shell (1) is provided with a slope (13) on one side close to the iron collecting box (3). The discharge port (14) is provided with the slope (13) on one side and a second baffle (12) on the other side, and the second baffle (12) is fixedly connected to the outer shell (1).

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